Campus Network Design version 8

Aruba Campus Wireless Networks
Version 8

www.arubanetworks.com
1344 Crossman Avenue
Sunnyvale, California 94089
Phone: 408.227.4500
Fax 408.227.4550
Aruba Networks, Inc. 2
Aruba Campus Wireless Networks Validated Reference Design
Copyright
© 2011 Aruba Networks, Inc. AirWave®, Aruba Networks®, Aruba Mobility Management System®, Bluescanner, For Wireless That
Works®, Mobile Edge Architecture®, People Move. Networks Must Follow®, RFprotect®, The All Wireless Workplace Is Now Open For
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Certain Aruba products include Open Source software code developed by third parties, including software code subject to the GNU
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used can be found at this site:
http://www.arubanetworks.com/open_source
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Aruba Networks, Inc. Table of Contents | 3
Table of Contents
Chapter 1: Aruba Reference Architectures 7
Reference Material 8
Icons Used in this Guide 9
Chapter 2: Campus Deployments 11
Aruba Campus WLAN Logical Architecture 12
Recommendations for Key Components 15
Chapter 3: Master/Local Operation 19
Controller Licenses 19
Licensing Master Mobility Controllers 20
Licensing Local Mobility Controllers 20
Certificates 20
Chapter 4: VLAN Design and Recommendations 23
VLAN Pooling 25
Chapter 5: Redundancy 29
Master Redundancy 29
Local Redundancy 33
Chapter 6: User Roles, Profiles, and AP Groups 39
Alias 40
Configuration Profiles 41
AP Groups 42
Chapter 7: AP Groups for Client Access 43
Chapter 8: Configuring the Employee Role 45
Configuring the Common Policy 45
Configuring the sip-session-allow Policy 47
Configuring the ocs-lync Policy 48
Configuring the Employee Role 50
Chapter 9: Employee VAP Profiles 53
Configuring the SSID Profiles 54
Configuring the Employee SSID Profile 55
Configuring Wi-Fi Multimedia 55
Configuring the AAA Profiles 57

Authentication Server and Server Groups 57
Configuring the NPS Server Group for 802.1X Authentication 58
Configuring the Employee AAA Profile 59
Configuring the Employee VAP Profiles 61
Chapter 10: Configuring the Application Role and VAP Profiles 65
Configuring the tftp-session-allow Policy 66
Configuring the Application Role 67
Configuring the Application SSID Profile 68
Configuring the Application AAA Profile 70
Configuring the Application VAP Profiles 71
Chapter 11: Configuring the Guest Roles and VAP Profile 75
Configuring the Amigopod Policy 76
Configuring the guest-logon-access Policy 77
Configuring the block-internal-access Policy for the Guest Role 80
Configuring the auth-guest-access Policy 81
Configuring the drop-and-log Policy 82
Configuring the Initial Guest Role 83
Configuring the Authenticated Guest Role 85
Maximum User Sessions for Guest Role 86
Configuring the Guest SSID Profile 87
Configuring the Server Group for Guest Authentication 88
Configuring the Captive Portal Authentication Profile for Guest WLAN 89
Configuring the Guest AAA Profile 92
Configuring the Guest VAP Profile 93
Chapter 12: Configuring the Radio Profiles 95
Configuring the ARM Profile 95
Configuring the 802.11a and 802.11g Radio Profiles 98
Chapter 13: Configuring the AP System Profiles 101
Chapter 14: Configuring the QoS 105
Traffic Management Profile 105
VoIP Call Admission Control Profile 107

Chapter 15: Configuring the Client Access AP Groups 109
Chapter 16: AP Groups for Air Monitors 113
Configuring the AM Scanning Profile 114
Configuring the 802.11a and 802.11g Radio Profiles 116
Configuring the AP Groups for Air Monitors 118
Chapter 17: Altering the Default AP Group for Pre 6.1 ArubaOS 119
Chapter 18: Wireless Intrusion Prevention (IDS Profiles) of RFProtect 121
Chapter 19: Spectrum Analysis 127
Chapter 20: Mobility 131
Configuring the Mobility Domain 131
Chapter 21: Control Plane Security 137
Chapter 22: AP Provisioning 141
Chapter 23: Logging 143
Chapter 24: AirWave 145
Chapter 25: Amigopod 147
Appendix A: Link Aggregation 149
Configuring LACP 149
Appendix B: Aruba Contact Information 155
Contacting Aruba Networks 155

Aruba Networks, Inc. Aruba Reference Architectures | 7
Chapter 1: Aruba Reference Architectures
The Aruba Validated Reference Design (VRD) series is a collection of technology deployment guides
that include descriptions of Aruba technology, recommendations for product selections, network
design decisions, configuration procedures, and best practices for deployment. Together these guides
comprise a reference model for understanding Aruba technology and designs for common customer
deployment scenarios. Each Aruba VRD network design has been constructed in a lab environment
and thoroughly tested by Aruba engineers. Our customers use these proven designs to rapidly deploy
Aruba solutions in production with the assurance that they will perform and scale as expected.
The VRD series focuses on particular aspects of Aruba technologies and deployment models.
Together the guides provide a structured framework to understand and deploy Aruba wireless LANs
(WLANs). The VRD series has four types of guides:
 Foundation: These guides explain the core technologies of an Aruba WLAN. The guides also
describe different aspects of planning, operation, and troubleshooting deployments.
 Base Design: These guides describe the most common deployment models, recommendations,
and configurations.
 Applications: These guides are built on the base designs. These guides deliver specific
information that is relevant to deploying particular applications such as voice, video, or outdoor
campus extension.
 Specialty Deployments: These guides involve deployments in conditions that differ significantly
from the common base design deployment models, such as high-density WLAN deployments.
Figure 1 VRD Core Technologies
This guide covers the deployment of Aruba WLAN in a typical campus network, and it is considered
part of the base designs guides within the VRD core technologies series. This guide covers the design
recommendations for a campus deployment and it explains the various configurations needed to
implement the Aruba secure, high-performance, multimedia grade WLAN solution in large campuses.
This guide describes these specific topics:
 recommended campus network design
arun_0334
Foundation
Base Designs
Specialty
Deployments
Applications

 configuration of redundancy in campus deployments
 configuration of AP groups for client access and air monitors
 configuration of spectrum monitors (SMs)
 configuration of Layer 3 mobility
 configuration of control plane security (CPsec)
Table 1 lists the current software versions for this guide.
Reference Material
This guide is a base designs guide, and therefore it will not cover the fundamental wireless concepts.
This guide helps a wireless engineer configure and deploy the Aruba WLAN in a campus environment.
Readers should have a good understanding of wireless concepts and the Aruba technology that are
explained in the foundation-level guides.
 For information on indoor MIMO WLANs, see the Aruba 802.11n Networks Validated Reference
Design, available on the Aruba website at http://www.arubanetworks.com/vrd
 For information on Aruba Mobility Controllers and deployment models, see the Aruba Mobility
Controllers and Deployment Models Validated Reference Design, available on the Aruba
website at http://www.arubanetworks.com/vrd
 For specific deployment configuration details, or for deployment models for 802.11a/b/g
networks, see the 3.X series of VRDs on the Aruba website at http://www.arubanetworks.com/
vrd. The existing VRDs will be updated to follow this new format.
 The complete suite of Aruba technical documentation is available for download from the Aruba
support site. These documents present complete, detailed feature and functionality explanations
beyond the scope of the VRD series. The Aruba support site is located at: https://
support.arubanetworks.com/. This site requires a user login and is for current Aruba customers
with support contracts.
 For more training on Aruba products or to learn about Aruba certifications, visit the Aruba
training and certification page on our website. This page contains links to class descriptions,
calendars, and test descriptions: http://www.arubanetworks.com/training.php/
 Aruba hosts a user forum site and user meetings called Airheads. The forum contains
discussions of deployments, products, and troubleshooting tips. Airheads Online is an
Table 1 Software Versions
Product Version
ArubaOS (mobility controllers) 6.1
ArubaOS (mobility access switch) 7.0
ArubaInstant 1.1
MeshOS 4.2
AirWave 7.3
AmigopodOS 3.3

invaluable resource that allows network administrators to interact with each other and Aruba
experts. Announcements for Airheads in person meetings are also available on the site: http://
airheads.arubanetworks.com/
 The VRD series assumes a working knowledge of Wi-Fi®, and more specifically dependent AP,
or controller based, architectures. For more information about wireless technology
fundamentals, visit the Certified Wireless Network Professional (CWNP) site at http://
www.cwnp.com/
Icons Used in this Guide
Figure 2 shows the icons that are used in this guide to represent various components of the system.
Figure 2 VRD Icon Set
Air
monitor
Microwave Mobile phone Firewall Network cloud
AP
Laptop
Spectrum
monitor
Mobility
controller
Switch
Router
AirWave
server
Server
Amigopod
server
arun_0332

Aruba Networks, Inc. Campus Deployments | 11
Chapter 2: Campus Deployments
Campus deployments are networks that require more than a single active controller to cover a
contiguous space. Examples of campus deployments are corporate campuses, large hospitals, and
higher-education campuses. In these deployments, the WLAN is typically the primary access method
for the network, and it is typically used by multiple classes of users and devices. Figure 3 depicts a
cluster-based architecture that is typical of large enterprise deployments.
Figure 3 Typical campus deployment with redundancy
arun_0279
Air monitor
Internet
Local
mobility
controller
Local
mobility controller
POS
File
RADIUS
PBX
Master
standby
Data center
Master
active
AirWave Amigopod

Aruba Campus WLAN Logical Architecture
Aruba WLAN has a logical four-tier operating model that consists of these four layers:
 Management: The management layer consists of AirWave®. AirWave provides a single point of
management for the WLAN, including reporting, heat maps, centralized configuration, and
troubleshooting.
 Network services: The network services layer consists of master mobility controllers and
Amigopod. Amigopod provides secure and flexible visitor management services. The master
controllers provide a control plane for the Aruba WLAN that spans the physical geography of the
wired network. The control plane does not directly deal with user traffic or APs. Instead the
control plane provides services such as whitelist coordination, valid AP lists, CPsec certificates,
RFProtect™ coordination, and RADIUS or AAA proxy.
 Aggregation: The aggregation layer is the interconnect point where the AP, air monitor (AM),
and SM traffic aggregates. This layer provides a logical point for enforcement of roles and
policies on centralized traffic that enters or exits the enterprise LAN.
 Network access: The network access layer is comprised of APs, AMs, and SMs that work
together with the aggregation layer controllers to overlay the Aruba WLAN.

Figure 4 Aruba Campus WLAN Logical Architecture
Retail_107
arun_0202
Air
monitor
Air
monitor
Control
Data
Local
active
Local
active
Master
standby
Data center
Master
activeNetwork
services
Management
Aggregation
Network
access
AirWave
POS
File
RADIUS
PBX
Amigopod

An example network is used to explain the deployment of an Aruba user-centric network in the large
complex campus network presented in Chapter 2: Campus Deployments on page 11. All networks
parameters, screenshots, and command line interface (CLI) examples shown in this VRD are from the
VRD example network. For details on the network parameters, design and setup of the entire VRD
example network, see the Base Designs Lab Setup for Validated Reference Design.
Figure 5 VRD example network
This VRD describes how to configure these WLANs:
 employee WLAN
 application WLAN (for 802.1X-incapable VoIP devices)
 guest WLAN
Employee WLAN emulates a converged voice and data network typical of most campus deployments.
Employee users and all corporate devices that are capable of 802.1X authentication use the employee
SSID. In the example network, an employee user has full access to all the network resources and the
internet. Guests use the guest SSID. Guest users are permitted to access the Internet using only
specific protocols such as HTTP and HTTPS. Only corporate devices that are not capable of 802.1X
authentication associate to the application SSID. These legacy devices that are not capable of 802.1X
arun_0337
AM-LC1AP-LC1 AM-LC2AP-LC2
GuestEmployee
Application
GuestEmployee
Application
Internet
Data center MC1-Sunnyvale-
3600 (active)
MC2-Sunnyvale-
3600 (standby)
LC1-
Sunnyvale-
6000
LC2-
Sunnyvale-
6000
Web
SIP
Radius
AD-CS
AD-DS
DNS
DHCP
Core switch
Distribution
switch 2
Access switchAccess switch
Distribution
switch 1
AirWave Amigopod

are allowed to access only the necessary application servers. For example, a VoIP phone running SIP
can access only the SIP server to make calls. To optimize your network for multicast video
applications, see the Aruba Video Quick Reference & Design Guide.
Figure 6 Role-based access
The deployment scenario in this VRD portrays the needs of most campus deployments. However, the
requirements of each organization are different. Your network may differ from the VRD example
network in these ways:
 VLAN and IP parameters
 user density and VLAN pools
 availability, redundancy, and performance requirements
 type of devices on the network
 applications running on the network
 user role requirements
 authentication and encryption requirements
 SSID requirements
 quality of service (QoS) requirements
 intrusion detection and intrusion prevention requirements
 mobility requirements
 network management requirements
The network parameters and Aruba configurations shown in this VRD should be adjusted to meet your
needs.
Recommendations for Key Components
Some key components of this reference model include:
 Master controllers: The MMC-3600 controller is recommended for master controllers that do
not terminate any APs or AMs. The master controllers should be deployed in pairs for
redundancy. The master controller should be given adequate bandwidth connections to the
network, preferably a minimum of a Gigabit Ethernet LAN connection. A general best practice is
arun_0361
Application SSID
Web
File
RADIUS
PBX
Data center
Guest
VLAN
Guest SSID
Employee
SSID Application
SSID
Employee
VLAN
Web
File
RADIUS
PBX
Data center
Employee
SSID
Guest
SSIDApplication
SSID
Local
controller
Local
controller
Local
controller InternetInternetInternet Web
File
RADIUS
PBX
Data center
Application
VLAN
Employee
SSID
Guest
SSID

to configure each MMC-3600 controller in a full mesh with redundant links to separate data
center distribution switches. The MMC-3600 does not have redundant power supplies, so it is
recommended that you connect each appliance to discrete power sources in the data center.
Figure 7 Master controllers deployed in full mesh topology
 Local controllers: Use the M3 Controller Module for local controllers. In a pair of M3 controller
modules configured for local controller redundancy, each controller should have its own MMC-
6000 chassis. So two MMC-6000 chassis can accommodate four pairs of redundant local
controllers. Connect each blade to its own distribution layer switch with two 10 Gigabit Ethernet
connections with link aggregation. For configuration of link aggregation, see Appendix A: Link
Aggregation on page 149. The MMC-6000 chassis should contain redundant power supplies
connected to discrete power sources. See the mobility controller product line matrix to choose the
most appropriate mobility controller for your deployment.
Figure 8 Link Aggregation
 Access points: Aruba offers a wide range of 802.11n APs. The spectrum capability and the
capacity of the APs vary. See the Aruba AP product line matrix to choose the most appropriate
AP for your deployment.
 Air monitors: Deploy AMs at a ratio of approximately one AM for every four APs deployed, and
around the building perimeter for increased security and location accuracy. AMs perform many
!CAUTION
Controllers that are redundant should not be placed in the same chassis,
because a chassis failure will cause the redundancy architecture to fail.arun_0410
Master
standby
Master
active
arun_052
Local
mobility
controller
Distribution layer
switch
Two 10 Gigabit Ethernet links
Distribution

of the intrusion detection system (IDS) duties for the network, including rogue AP containment.
AMs help to form accurate heat maps that display graphical RF data. Aruba considers dedicated
AMs to be a best practice for security because they provide full-time surveillance of the air. Use
the AP-105 as AMs, because these are dual-radio APs with full spectrum analysis support. For
details on the spectrum capabilities of all the Aruba APs, see the Aruba AP product line matrix.

Aruba Networks, Inc. Master/Local Operation | 19
Chapter 3: Master/Local Operation
Large campus deployments normally involve more than two controllers. When you have more than a
single pair of controllers, change control and network consistency can become an issue. To solve this
management scalability issue, Aruba Mobility Controllers can be deployed in clusters that consist of a
master and one or more local controllers. This design is the recommended model when two or more
controllers exist in the same network. This design is depicted in this VRD.
In an Aruba network that uses a master/local design, configuration is performed only on the master
and it is pushed down to the locals.
Local controllers reside at the aggregation layer of the Aruba overlay architecture. They handle AP
termination, user authentication, and policy enforcement. When you configure any local controller, you
must know the IP address of the master and the pre-shared key (PSK) that was used to encrypt
communication between the controllers. The control channel between all Aruba controllers is protected
by an IP Security (IPsec) connection. For more details on the functions and responsibilities of master
and local mobility controllers in Aruba architecture, see the Aruba Mobility Controllers and Deployment
Models Validated Reference Design.
Controller Licenses
The ArubaOS™ base operating system contains many features and extensive functionality for the
enterprise WLAN network. Aruba uses a licensing mechanism to enable the additional features and to
enable AP capacity on controllers. The controller licensing depends on the user density and the
features needed to operate and secure your network. For more details about Aruba licenses, see
Aruba Mobility Controllers and Deployment Models Validated Reference Design.
N O T E
In a large campus WLAN that has separate network services and aggregation
layers, APs and AMs should never terminate on the master controller. APs and
AMs should terminate only on the local controller. With this configuration, if the
master becomes unreachable or unavailable and no standby master has been
configured, the network continues to operate as expected, except for certain
operations. You cannot perform configuration, RF visualization, or location
services until connection to the master controller is restored. The master
controller is needed to perform configuration and reporting, but it is not a single
point of failure in the network.
N O T E
The controllers have a preconfigured key at first boot. Change this key after the
first boot so that the operation of the master/local cluster is secure.

Licensing Master Mobility Controllers
The master mobility controller must manage the functionality for all other platforms, so the master must
have the same license types as the local mobility controllers. Licensing unlocks the configuration
capabilities on the system. However, the master does not terminate APs or devices, so the master can
be licensed at a much lower level than the local mobility controller.
Table 2 lists the licenses that are used by the active and the standby master controllers in the example
network.
Licensing Local Mobility Controllers
Local controllers must be licensed according to the number of devices that consume licenses. Mobility
controllers should be licensed at the maximum expected capacity for that mobility controller. For
instance, in a failover scenario, the backup controller must be licensed to accept all the APs that it
could potentially host if a failure occurs, even if that is not the normal operating level.
In the example network, the two local mobility controllers are designed for active-active redundancy.
Each terminates a 40% load of APs and acts as the backup for the APs on the other controller. Each
controller is licensed to 80% of maximum capacity. If one mobility controller fails, the other controller
can add the additional APs from the failed controller.
Table 3 lists the licenses used by the local controllers in the example network.
Certificates
The Aruba controller comes with a default server certificate. This certificate demonstrates the secure
login process of the controller for captive portal, secure shell (SSH), and WebUI management access.
This certificate is not recommended for use in a production network. Aruba strongly recommends that
N O T E
Only the functionality that is being enabled needs to be licensed. For example,
xSec is deployed primarily only in Federal Government and military
installations, and it is not required unless it will be in use at the organization.
Table 2 Master Controller Licensing in the Example Network
License Capacity
AP Capacity 0
PEF-NG 1
RFProtect 1
Table 3 Local Controller Licensing in the Example Network
License Capacity
AP Capacity 416
PEF-NG 416
RFProtect 416

you replace this certificate with a unique certificate that is issued to the organization or its domain by a
trusted certificate authority (CA).
To receive a custom certificate from a trusted CA, generate a Certificate Signing Request (CSR) on
the controller and submit it to the CA. After you receive the digitally signed certificate from the CA,
import it to the controller. For more details about generating the CSR and importing certificates, see
“Managing Certificates” in the ArubaOS 6.1 User Guide available on the Aruba support site.

Aruba Networks, Inc. VLAN Design and Recommendations | 23
Chapter 4: VLAN Design and Recommendations
On an Aruba controller at the aggregation layer, VLANs are used in two logically different places:
 the access side of the controller where the APs terminate their GRE tunnels
 the user access side
VLANs are used on the access side of the controller where the APs terminate their GRE tunnels.
These VLANs carry traffic back and forth between APs and the controllers. Aruba strongly
recommends that edge access VLANs should not be dedicated to APs. The only exception where the
APs may have to be deployed on dedicated VLANs is in environments where 802.1X is a requirement
on the wired edge. The APs should use the existing edge VLANs as long as they have the ability to
reach the mobility controller. Deploying the APs and AMs in the existing VLANs allows for the full use
of the Aruba rogue detection capabilities. In pre 6.1 ArubaOS, the AMs had to be connected to a trunk
port that contains all VLANs that appear on any wired access port within range of the AM. This
connection was required for the AM to do wireless-to-wired correlation when tracking rogue APs. In
ArubaOS 6.1, the network administrators have the option of trunking all the VLANs available in the
access layer to the controller instead of trunking them to APs or AMs. Remember that all the access
VLANs should be trunked to every controller in the network that terminates APs and AMs. When all the
access VLANs are trunked to the controller, the controller assists the APs and AMs in wireless-to-
wired correlation during rouge detection. Depending on your network design, you must choose
between trunking the VLANs to the controller or to the APs and AMs.
Figure 9 AP plugged into a local switch, accessing the mobility controller
!CAUTION
Wired containment requires that the hearing AP or AM is on the same subnet
as the contained device. If your access network has many VLANs and if you
want wired containment on all those VLANs, deploy the AMs on trunk ports.
arun_0356
LC1-Sunnyvale-6000
controller
145
AP-LC1Access switch
Distribution-SW-1
145
145

VLANs are also used on the user access side. On the user access side, user VLANs exist and traffic
flows to and from the users. During authentication, a process that is called “role derivation” assigns the
proper VLAN to each user and forwards traffic to the wired network if allowed. For campus networks,
Aruba recommends that you do not deploy the controllers as the default gateway for user VLANs. The
existing Layer 3 switches should remain the default gateways for all user VLANs. The Aruba
controllers should be deployed as a Layer 2 switched solution that extends from the distribution layer.
The controllers should be the default gateway and DHCP server only for the guest VLAN. For more
details about VLAN design, see the Aruba Mobility Controllers and Deployment Models Validated
Reference Design.
Figure 10 User VLAN, logical connection
arun_0358
LC1-Sunnyvale-6000
controller
150
AP-LC1
Access switch
Distribution-SW-1

VLAN Pooling
The Aruba VLAN pooling feature allows a set of VLANs to be assigned to a designated group of users.
VLAN pooling is tied to the virtual access point (VAP). Each VAP on a physical AP can have different
VLANs or VLAN pools. Aruba recommends using VLAN pools any time two or more user VLANs are
needed to support the user load from a single set of APs going to a single mobility controller. For more
details about VLAN pooling, see the Aruba Mobility Controllers and Deployment Models Validated
Reference Design.
Figure 11 VLAN pools distribute users across VLANs
arun_049
arun_0359
VLANs 150, 151, 152, 153, 154
Mobility
controller

To determine which pool to put the user into, the user MAC address is run through a hash algorithm.
The output of this algorithm places the user into one of the VLANs in the pool and ensures that the
user is always placed into the same pool during a roaming event. As the user associates with the next
AP, the address is hashed. The user is again placed into the same VLAN on the new AP, because the
hash algorithm generates the same output as before. The user can continue to use their existing IP
address with no break in their user sessions.
A single VLAN or a VLAN pool can be named by the administrator. The VLAN names are global, but
the VLAN IDs associated with those names are local to the controller. The VLAN names are
configured globally in the master controller and are synchronized to the local controllers. The VLAN
IDs that are associated to a particular VLAN name are defined in the local controllers and can vary
across the controllers.
The example network uses 10 VLANs (VLAN 150-159) split into these two pools:
 pool-7 is used by the employee and application VAPs in the AP group that uses the virtual IP
(VIP) of Virtual Router Redundancy Protocol (VRRP) instance 7 as the local management switch
(LMS) IP.
 pool-8 is used by the employee and application VAPs in the AP group that uses the VIP of
VRRP instance 8 as the LMS IP.
N O T E
The hashing algorithm does not place users into the available pool of VLANs in
a round-robin method. Ten clients that join a WLAN are not load balanced
equally among the VLANs. Instead, the distribution is based on the output of
the hash. One VLAN might have more users than the others. For example,
consider 150 clients that join a WLAN with just two VLANs in the pool and with
80 addresses per VLAN available for clients. Based on the output of the
hashing algorithm, 80 clients are placed in one VLAN and 70 in the other.
When the 151st client joins, the output of the hash might place the client in the
VLAN whose scope of 80 addresses has already exhausted. The result is that
the client cannot obtain an IP. To avoid such a rare situation, the network
administrator should design pools with sufficient number of user VLANs and
DHCP scopes to accommodate the user density.
!CAUTION
During VLAN pooling, the controller places the user into a particular VLAN
based on the hash calculated using the media access control (MAC) address of
the client. Hence, the VLAN obtained as a result of the hashing algorithm
cannot be predicted beforehand. In networks that use VLAN pooling, the clients
with static IP addressing will not work because the statically assigned VLAN
and the VLAN obtained by the controller after running the hash can be
different. Aruba recommends that VLAN pooling and static IP addressing
should never be used simultaneously within a single SSID.

Table 4 lists the VLAN pools that are used in the example network.
CLI Configuration
MC1-Sunnyvale-3600
!
vlan-name pool-7 pool
!
LC1-Sunnyvale-6000
!
vlan pool-7 150-154
vlan pool-8 155-159
!
LC2-Sunnyvale-6000
!
vlan pool-7 150-154
vlan pool-8 155-159
!
WebUI Screenshot
Figure 12 VLAN pool on MC1-Sunnyvale-3600
Table 4 VLAN Pools in the Example Network
Pool Name VLANs
pool-7 150-154
pool-8 155-158

Figure 13 VLAN pool on LC1-Sunnyvale-6000
Figure 14 VLAN pool on LC2-Sunnyvale-6000

Aruba Networks, Inc. Redundancy | 29
Chapter 5: Redundancy
Aruba offers several redundancy models for master controller redundancy and local control
redundancy. The Aruba redundancy solutions can be implemented using VRRP or backup LMS IP.
Use VRRP, which operates at Layer 2, for redundancy whenever possible. For more details about the
various redundancy models and when to use backup LMS IP, see Aruba Mobility Controllers and
Deployment Models Validated Reference Design.
Master Redundancy
To achieve high availability of the master controller, use the master redundancy model. In this
scenario, two controllers are used at the network services layer: one controller is configured as the
active master and the other controller acts as standby master. This setup is known as “hot standby”
redundancy. The two controllers run a VRRP instance between them and the database and RF
planning diagram is synchronized periodically. The VIP address that is configured in the VRRP
instance is used by local mobility controllers, wired APs, and wireless APs that attempt to discover a
mobility controller. That VIP address is also used for network administration. The DNS query made by
APs to find the master controller resolves to this VIP. The synchronization period is a configurable
parameter with a recommended setting of 30 minutes between synchronizations.
Figure 15 Hot-standby redundancy
In this configuration, one controller is always the active master controller and the other is always the
standby master controller. When the active controller fails, the standby controller becomes the active
master. Disable preemption in this setup. When preemption is disabled, the original master controller
does not automatically become the active master after it has recovered and instead acts as the backup
master controller. The recommended network attachment method is to have each master controller
configured in a full mesh with redundant links to separate data center distribution switches. The
example network uses a VRRP instance named 130 for redundancy.
arun_0226
Master
standby
VRRP keepalives
Periodic database
synchronizationMaster
active

Table 5 and Table 6 summarize the VRRP instance used for master redundancy in the example
network.
CLI Configuration
MC1-Sunnyvale-3600
!
master-redundancy
master-vrrp 130
peer-ip-address 10.169.130.7 ipsec **********
!
vrrp 130
priority 110
ip address 10.169.130.8
description "Preferred-Master"
vlan 130
tracking master-up-time 30 add 20
no shutdown
!
database synchronize period 30
database synchronize rf-plan-data
!
Table 5 VRRP Instance Used for Master Redundancy
VRRP
ID
VRRP IP Active Controller Standby Controller
Tracking
Master Up
Time
Tracking
Master Up
Time
Priority
130 10.169.130.8 MC1-sunnyvale-3600
(Priority 110)
MC2-sunnyvale-3600
(Priority 100)
30 20
Table 6 Database Synchronization Parameters
Enable Periodic
Database Synchronization
Database Synchronization
Period in Minutes
Include RF Plan Data
enabled 30 enabled

MC2-Sunnyvale-3600
!
master-redundancy
master-vrrp 130
peer-ip-address 10.169.130.6 ipsec **********
!
vrrp 130
ip address 10.169.130.8
description "Standby-Master"
vlan 130
tracking master-up-time 30 add 20
no shutdown
!
database synchronize period 30
database synchronize rf-plan-data
!
WebUI Screenshot
Figure 16 VRRP-130 on MC1-Sunnyvale-3600

Figure 17 VRRP table on MC1-Sunnyvale-3600
Figure 18 VRRP-130 on MC2-Sunnyvale-3600

Figure 19 VRRP table on MC2-Sunnyvale-3600
Local Redundancy
The local controllers at the aggregation layer also use VRRP instances to provide redundancy.
However, a different redundancy model called active-active redundancy is used. In this model, the two
local controllers terminate APs on two separate VRRP VIP addresses. Each Aruba controller is the
active local controller for one VIP address and the standby local controller for the other VIP. The
controllers share a set of APs and divide the load among them. The APs are configured in two different
AP groups, each with a different VIP as the LMS IP address.
Figure 20 Active-active redundancy
arun_044
arun_0264
Air monitor
Keepalives
Active VIP
Standby VIP
Local
Active VIP
Standby VIP
Local

When an active local controller becomes unreachable, the APs that are managed by that controller fail
over to the standby controller for that VRRP instance. Under these conditions, one controller
terminates the entire AP load in the network. Therefore each controller must have sufficient processing
power and licenses to accommodate all of the APs that are served by the entire cluster. Though the
controllers are designed to support 100% capacity, do not load the mobility controllers past the 80%
capacity so that the network is more predictable and allows headroom. Aruba recommends that each
mobility controller be run at only 40% capacity, so that when a failover occurs, the surviving mobility
controller carries only an 80% load. This load gives the mobility controller the room to operate under
the failover conditions for a longer period of time.
In this model, preemption should be disabled so that APs are not automatically forced to fail back to
the original primary controller after it recovers. Whenever an AP fails over to a different controller, all
the clients served by that AP get disconnected. So if a controller malfunctions and reboots constantly,
then the APs served by that controller will “flap” between the original controller and standby controller if
preemption is enabled. When preemption is disabled, the network administrator has sufficient time to
troubleshoot the issue without this ping pong effect. The APs do not automatically fail back to the
original controller, so this model requires that the mobility controller is sized appropriately to carry the
entire planned failover AP capacity for an extended period of time.
Table 7 summarizes the VRRP instances used for local redundancy in the example network.
CLI Configuration
LC1-Sunnyvale-6000
!
vrrp 7
priority 110
ip address 10.169.145.7
description "intial-primary-7"
vlan 145
no shutdown
!
vrrp 8
ip address 10.169.145.8
description "initial-standby-8"
vlan 145
no shutdown
!
Table 7 VRRP Instances Used for Local Redundancy
VRRP ID VRRP IP Active Controller Standby Controller
7 10.169.145.7 LC1-Sunnyvale-6000 (Priority 110) LC2-Sunnyvale-6000 (Priority 100)
8 10.169.145.8 LC2-Sunnyvale-6000 (Priority 110) LC1-Sunnyvale-6000 (Priority 100)

LC2-Sunnyvale-6000
!
vrrp 7
ip address 10.169.145.7
description "initial-standby-7"
vlan 145
no shutdown
!
vrrp 8
priority 110
ip address 10.169.145.8
description "initial-primary-8"
vlan 145
no shutdown
!
WebUI Screenshot
Figure 21 VRRP-7 on LC1-Sunnyvale-6000

Figure 23 VRRP table on LC1-Sunnyvale-6000

Figure 26 VRRP table on LC2-Sunnyvale-6000

Aruba Networks, Inc. User Roles, Profiles, and AP Groups | 39
Chapter 6: User Roles, Profiles, and AP Groups
In the Aruba user-centric network, every client is associated with a user role. The user roles that are
enforced through the firewall policies determine the network privileges of a user. A policy is a set of
rules that applies to the traffic that passes through the Aruba devices. The rules and policies are
processed in a top-down fashion, so the position of a rule within a policy and the position of a policy
within a role determine the functionality of the user role. When you construct a role, you must put the
rules and policies in the proper order.
The PEFNG license is essential to exploit the identity-based security features on the Aruba controller.
The PEFNG license also adds a set of predefined policies on the controller, which can be used or
modified as required.
The type of user roles and polices vary between organizations and the example network defines roles
and policies that are implemented in most cases. In the example network, the following roles are used:
 employee role
 application role
 guest-logon role
 auth-guest role
Figure 27 summarizes the user roles used in the example network and all the policies associated with
each of those roles.
Figure 27 User roles used in the example network
!CAUTION
Modifying the predefined policies is not recommended. If necessary, create a
new policy that depicts the predefined rule and then customize it.
arun_0367
Firewall policies
• common-policy
• sip-session-allow
• ocs-lync
• allowall (predefined)
Firewall policies
• sip-session-allow
• dhcp-acl (predefined)
• tftp-session-allow
• dns-acl (predefined)
• icmp-acl (predefined)
Firewall policies
• cplogout (predefined policy)
• guest-logon-access
• block-internal-access
• auth-guest-access
• drop-and-log
Firewall policies
• captiveportal (predefined policy)
• guest-logon-access
• block-internal-access
User roles
• employee
• application
• guest-logon
• auth-guest

Alias
The Alias feature in the ArubaOS can be used to group several hosts or networks. Use this option
when several rules have protocols and actions common to multiple hosts or networks. An alias
simplifies a firewall policy by reducing the number of ACL entries. The alias allows IP addresses to be
added by host, network, or range. When the invert parameter of an alias is enabled, the rules that use
that alias are applied to all the IP addresses except those specified in the alias. For more information
about alias, see the ArubaOS 6.1 User Guide available on the Aruba support site.
Table 8 lists the aliases that are used in the example network.
Table 8 Aliases
Alias Name Purpose IP Address/ Range
Public-DNS Defines the public DNS servers Host
8.8.8.8
216.87.84.209
Internal-Network Defines the private IPv4 address range Network
10.0.0.0/8
172.16.0.0/16
192.168.0.0/24
sip-server Defines the SIP servers in the network Host
10.169.130.20
tftp-server Defines the TFTP servers in the network Host
10.169.130.11
dns-servers Defines the internal DNS servers Host
10.169.130.4
ocs-lync Defines the Microsoft Lync servers Host
10.169.130.35
Amigopod Defines the Amigopod server Host
10.169.130.50

Configuration Profiles
Configuration profiles allow different aspects of the Aruba WLAN to be grouped into different
configuration sets. Each profile is essentially a partial configuration. SSID profiles, radio profiles, and
AAA profiles are just some of the available choices. For more information about these profiles, see the
Aruba 802.11n Networks Validated Reference Design and ArubaOS 6.1 User Guide.
Figure 28 shows an overview of the profile structure and high-level overview of an AP group.
Figure 28 High-level overview of an AP group
arun_0344
IDS profile
IDS unauthorized
device profile
IDS DoS profile
IDS signature
matching
IDS rate
thresholds
IDS signature
profiles
IDS general
AP name
(individual AP)
AP group WLAN
QOS
AAA
IDS
IDS impersonation
profile
User roles
User derivation
rule profile
802.1X auth profile
MAC auth
server group
MAC auth profile
802.1X auth
server group
AAA profile
SSID
Mesh
SSID profile
EDCA AP
profile
EDCA station
profile
High throughput
profile
VoIP CAC
Virtual AP profile
Authentication
servers
Traffic management
802.11k
WMM traffic management
RF
RF optimization
RF event
thresholds
802.11a radio
profile
802.11b/g radio
profile
ARM profile
HT radio profile
Spectrum profile
AM scanning
profile
Mesh radio
profile
AP
Ethernet1
profile
AP system
profile
Wired AP profile
SNMP profile
SNMP user
profile
Mesh cluster
profile
Mesh radio
profile
Mesh high-throughput
SSID profile
Regulatory domain
profile
Ethernet0
profile

AP Groups
An AP group is a unique combination of configuration profiles. In general, all profiles can be assigned
to an AP group to create a complete configuration. This flexibility in configuration allows arbitrary
groupings of APs such as “All Headquarter APs”, “All Lobby APs”, or “All AMs”, with different
configurations for each. Configuration profiles provide flexibility and convenience to wireless network
managers who create AP groups. An AP group must include a minimum number of profiles, in
particular, a VAP profile.
The example network uses the following four AP groups:
 AP-LC1-Sunnyvale-6000
 AM-LC1-Sunnyvale-6000
 AP-LC2-Sunnyvale-6000
 AM-LC2-Sunnyvale-6000
Figure 29 summarizes the configuration profiles used by these four AP groups in the example network.
The chapters that follow explain how to configure each of these profiles and why they are necessary.
Figure 29 All the profiles configured in the example network
N O T E
Each AP, AM, SM, and RAP can be a part of only one AP group at any one
time. This limitation eliminates the need to merge possibly contradictory
configurations and prevents multiple VAPs with the same SSID from being
enabled on the same physical AP.
arun_0364
SSID profiles
• corp-employee
• corp-app
• guestnet
AP system profiles
• LC1-Sunnyvale-6000
• LC2-Sunnyvale-6000
AM scanning profiles
• am-scan
802.11a radio profiles
• airmonitor
• AP
802.11g radio profiles
• airmonitor
• AP
ARM profile
• corp-arm
IDS profile
• corp-wips
VoIP call admission
control profile
• corp-voip-cac
AAA profiles
• corp-employee
• corp-app
• guestnet
VAP profiles
• corp-employee-LC1-Sunnyvale-6000
• corp-app-LC1-Sunnyvale-6000
• guestnet
Traffic management profiles
• traffic-LC1-Sunnyvale-6000
• traffic-LC2-Sunnyvale-6000

Aruba Networks, Inc. AP Groups for Client Access | 43
Chapter 7: AP Groups for Client Access
When you create an AP group for client access you create a functional WLAN for client access. To
create an AP group for client access, you need to configure these:
 firewall policies and user roles (required)
 SSID profile (required)
 server groups, AAA profile (required)
 VAP profile (required)
 Adaptive Radio Management (ARM) profile (optional, but recommended)
 802.11a radio profile (required)
 802.11g radio profile (required)
 AP system profile (required)
 802.11a traffic management profile (optional, but recommended)
 802.11g traffic management profile (optional, but recommended)
 VoIP call admission control profile (optional, but recommended)
 IDS profile (optional, but recommended)
The following chapters explain the configuration of the AP-LC1-Sunnyvale-6000 and AP-LC2-
Sunnyvale-6000 AP groups for client access. The AP-LC1-Sunnyvale-6000 AP group is used for all
APs that must be managed by the LC1-Sunnyvale-6000 local controller. The AP-LC2-Sunnyvale-6000
AP group is used for all APs that must be managed by the LC2-Sunnyvale-6000 local controller.
The APs that belong to one of these two AP groups perform these actions:
 Broadcast employee, application, and guest SSIDs in both 2.4 GHz and 5 GHz bands.
 Participate in ARM and band steering.
 Terminate on VRRP-7 VIP if they are in the AP-LC1-Sunnyvale-6000 AP group or on VRRP-8
VIP if they belong to the AP-LC2-Sunnyvale-6000 AP group.
 Participate in prioritizing traffic based on SSID and WMM category.
 Participate in VoIP call admission control.
 Participate in wireless intrusion prevention.

Aruba Networks, Inc. AP Groups for Client Access | 44
Figure 30 summarizes the profiles used for the AP-LC1-Sunnyvale-6000 and AP-LC2-Sunnyvale-6000
AP groups.
Figure 30 AP groups for client access
VAP =
802.11a radio profile = AP
802.11g radio profile = AP
AP system profile = LC1-Sunnyvale-6000
802.11a traffic management profile = traffic-LC1-Sunnyvale-6000
802.11g traffic management profile = traffic-LC1-Sunnyvale-6000
VoIP call admission control profile = corp-voip-cac
IDS profile = corp-wips
• guestnet
VAP =
802.11a radio profile = AP
802.11g radio profile = AP
802.11a traffic management profile = traffic-LC2-Sunnyvale-6000
802.11g traffic management profile = traffic-LC2-Sunnyvale-6000
VoIP call admission control profile = corp-voip-cac
• guestnet
arun_0385
AP groups for client access
• AP-LC1-Sunnyvale-6000
• AP-LC2-Sunnyvale-6000
AP group =
AP-LC1-Sunnyvale-6000
AP group =

Aruba Networks, Inc. Configuring the Employee Role | 45
Chapter 8: Configuring the Employee Role
Company employees can be granted a role based on their specific job function, department, domain,
or they can be given a universal employee role. In certain organizations, users typically are placed in a
single user role that has access to all internal and external resources.
The employee role used in the example network grants unrestricted access to the internal and external
resources, but denies personal DHCP servers. The employee role is the default role assigned to
clients after successful 802.1X authentication to the employee SSID. This role gives voice traffic
priority over standard data traffic. All company employees and devices capable of 802.1X/EAP use the
employee SSID.
Before you configure the employee role, first you must create the policies associated with it. The
employee role in the example network uses the following policies:
 common
 sip-session-allow
 ocs-lync
 allowall (predefined)
Configuring the Common Policy
In most campus deployments, all users should be denied certain services, no matter what their roles.
This common policy is used by the employee role to do the following things:
 Deny users from activating their personal DHCP servers on the network.
 Allow ping across the network.
 Allow DNS queries only to certain predefined DNS servers.
Remember, the order of rules within a policy determines the behavior of the policy.

Table 9 summarizes the rules used for the common policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session common
user any udp 68 deny
any any svc-dhcp permit
any any svc-icmp permit
user alias dns-servers svc-dns permit
!
Table 9 Rules Used for the Common Policy
Rule
Number
Source Destination Service Action Purpose
1 User Any UDP
min port = 68
max port = 68
Drop This rule drops responses from a personal
DHCP server, which prevents the clients
from acting as DHCP servers.
2 Any Any Service
svc-dhcp (udp 67 68)
Permit This rule allows clients to request and
discover a DHCP IP address over the
network. The DHCP server on the network
does not fall under the User category, so its
response on port 68 is not dropped by the
first rule. The first two rules guarantee that
DHCP is processed only by legitimate DHCP
servers on the network.
3 Any Any Service
svc-icmp (icmp 0)
Permit This rule allows ICMP (ping) across the
internal network.
4 Any Alias
dns-servers
Service
svc-dns (udp 53)
Permit This rule allows DNS queries to the set of
DNS servers defined in the dns-servers
alias.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 31 Common policy
Configuring the sip-session-allow Policy
The sip-session-allow policy prioritizes SIP traffic and allows SIP services only between the user and
the corporate PBX and servers that provide voice service. If the organization supports protocols such
as NOE from Alcatel Lucent, H.323, SCCP, Vocera, and others for voice communication, policies
should be created to prioritize them.
Table 10 summarizes the rules used for the sip-session-allow policy.
Table 10 Rules Used for the sip-session-allow Policy
Rule
Number
Source Destination Service Action Queue Purpose
1 user Alias sip-server Service
svc-sip-udp
permit high Allows SIP sessions between users
and SIP servers using the UDP
protocol
2 user Alias sip-server Service
svc-sip-tcp
permit high Allows SIP sessions between users
and SIP servers using the TCP
protocol
3 Alias
sip-server
user Service
svc-sip-udp
permit high Allows SIP sessions between SIP
servers and users using the UDP
protocol
4 Alias
sip-server
user Service
svc-sip-tcp
permit high Allows SIP sessions between SIP
servers and users using the TCP
protocol

CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session sip-session-allow
user alias sip-server svc-sip-udp permit queue high
user alias sip-server svc-sip-tcp permit queue high
alias sip-server user svc-sip-udp permit queue high
alias sip-server user svc-sip-tcp permit queue high
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 32 sip-session-allow policy
Configuring the ocs-lync Policy
Many organizations use Microsoft Office Communications Server or Microsoft Lync Server for voice,
instant messaging, and conferencing. These Microsoft products use SIP over TLS for signaling.
ArubaOS performs a deep packet inspection on traffic established over a secure channel to identify
the voice and video sessions. This deep packet inspection of encrypted traffic allows Aruba to provide
QoS for the voice or video sessions established even over the secure layers such as TLS or IP Sec.
The classify media option enables this support.
Microsoft OCS/Lync uses TCP on port 5060/5061 for communication between the Microsoft OCS/Lync
server and Office Communicator /Lync client. So, the ocs-lync policy is constructed to perform deep
packet inspection only on the TCP traffic on ports 5060/5061.

Table 11 summarizes the rules used for the ocs-lync policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session ocs-lync
user alias ocs-lync svc-sips permit classify-media queue high
user alias ocs-lync svc-sip-tcp permit classify-media queue high
alias ocs-lync any svc-sips permit classify-media queue high
alias ocs-lync any svc-sip-tcp permit classify-media queue high
!
Table 11 Rules Used for the ocs-lync Policy
Rule
Number
Source Destination Service Action Queue
Classify
Media
Purpose
1 User Alias
ocs-lync
Service
svc-sips (tcp
5061)
permit high Enabled This rule performs deep
packet inspection and
prioritization of encrypted
voice, and video sessions
of OCS/Lync.2 User Alias
ocs-lync
Service
svc-sip-tcp (tcp
5060)
Permit high Enabled
3 Alias
ocs-lync
any Service
svc-sips (tcp
5061)
Permit high Enabled
4 Alias
ocs-lync
any Service
svc-sip-tcp (tcp
5060)
permit high Enabled
!CAUTION
Selecting any for the service field and setting the classify media flag, has an
impact on performance because it turns on deep packet inspection for all traffic
types. Choose this option only for services that require it.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 33 ocs-lync policy
Configuring the Employee Role
After all the required policies are configured, place the required firewall policies in correct order to
create the employee role. Remember, the order of policies determines the behavior of a user role.
Table 12 summarizes the policies in the employee role.
Table 12 Policies in the Employee Role
Policy
Number
Policy Name Purpose
1 common This policy denies personal DHCP servers but allows legitimate DHCP and DNS
services. For details, see Configuring the Common Policy on page 45.
2 sip-session-allow This policy gives voice traffic priority using the high priority queue. For details, see
Configuring the sip-session-allow Policy on page 47.
3 ocs-lync This policy gives priority to encrypted voice and video sessions used by Microsoft OCS
and Lync services. For details, see Configuring the ocs-lync Policy on page 48.
4 allowall (predefined) This policy allows any service from any source to any destination.

CLI Configuration
MC1-Sunnyvale-3600
!
user-role employee
access-list session common
access-list session SIP-session-allow
access-list session ocs-lync
access-list session allowall
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 34 Employee role

Aruba Networks, Inc. Employee VAP Profiles | 53
Chapter 9: Employee VAP Profiles
A typical home AP advertises only one SSID, so even with a dual-radio AP, only two WLANs can be
formed. Ideally, in these situations the number of physical APs is proportional to the number of WLANs
supported. Aruba solves this issue with the concept of virtual access points (VAPs). VAPs are logical
entities that are present within a physical AP.
Physical Aruba APs, unlike typical home APs, are often configured to appear as more than one
physical AP. This configuration provides the necessary authentication and encryption combinations
without collocating excessive amounts of APs in the same physical area.
The VAPs share the same channel and power settings on the radio, but each appears as a separate
AP with its own SSID (ESSID) and MAC address (BSSID).
Figure 35 A typical set of VAPs on one physical AP
Aruba supports up to eight BSSIDs per radio on the AP, with a maximum of 16 VAPs per physical AP.
The maximum total number of BSSIDs that are supported across the WLAN are a function of the
mobility controller model. For more on these limitations, see the mobility controller matrix and AP
matrix on the Aruba networks public site at http://www.arubanetworks.com/vrd.
!CAUTION
Aruba does not recommend running an AP with the maximum number of VAPs
available. Each VAP acts like a real AP and is required to beacon like any other
AP. This beaconing consumes valuable airtime that would otherwise be used
by clients to transmit data on the channel. Aruba recommends that you
leverage the smaller numbers of SSIDs and user roles and deploy a new SSID
only when a new encryption or authentication type is required.
arun
Employee
SSID
Application SSID
Guest
SSID

A VAP profile is a container that holds an AAA profile, SSID profile, 802.11k profile, and WMM traffic
management profile. At minimum, each VAP profile must have an AAA and SSID profile. The VAP
profile also has other configurable features, such as band steering, dynamic multicast optimization,
fast roaming, and DoS prevention.
Table 13 summarizes the VAP profiles used in the example network.
Configuring the SSID Profiles
Service Set Identifier (SSID) is the network or WLAN that any client sees. A SSID profile defines
parameters, such as name of the network, authentication type for the network, basic rates, transmit
rates, SSID cloaking, and certain WMM settings for the network.
Aruba offers different flavors of the Advanced Encryption Standard (AES), Temporal Key Integrity
Protocol (TKIP), and wired equivalent privacy (WEP) encryption. AES is the most secure and
recommended encryption method. Most modern devices are AES capable and AES should be the
default encryption method. Use TKIP only when devices that are not AES capable are present. In
these situations, use a separate SSID for devices that are only capable of TKIP. It is important to
understand that several vulnerabilities have been reported with TKIP. Avoid using WEP, because it
can be cracked in less than 5 minutes with generally available tools. Aruba also supports a host of
authentication methods such as 802.1X, captive portal, PSK, and WEP.
N O T E
The BSSID assigned to each of the 16 possible SSIDs on a physical AP are
generated from the MAC address of the physical AP. A total of 16 BSSIDs are
generated by the algorithm. The BSSID assigned to each SSID is random.
Whenever an AP reboots the BSSID to SSID mapping may change. In certain
situations a SSID may be temporarily disabled for maintenance, when this
SSID is enabled again, the BSSID assigned to it might not be the same as
before.
Table 13 VAP Profiles Used in the Example Network
VAP Profile AP Group VLAN/ VLAN Pool
Corp-Employee-LC1-Sunnyvale-6000 AP-LC1-Sunnyvale-6000 pool-7
Corp-App-LC1-Sunnyvale-6000 AP-LC1-Sunnyvale-6000 pool-7
Corp-Employee-LC2-Sunnyvale-6000 AP-LC2-Sunnyvale-6000 pool-8
Corp-App-LC2-Sunnyvale-6000 AP-LC2-Sunnyvale-6000 pool-8
guestnet AP-LC1-Sunnyvale-6000,
900

Configuring the Employee SSID Profile
By default, all employees and corporate devices should connect to the employee SSID. The use of
802.1X with a backend RADIUS server and AES encryption makes this the most secure network. For
more information about authentication types, encryption methods, and role derivation on the Aruba
Mobility Controller for Wi-Fi Protected Access® 2 (WPA2™), see the Aruba 802.11n Networks
Validated Reference Design.
Configuring Wi-Fi Multimedia
Wi-Fi Multimedia™ (WMM®) is a Wi-Fi Alliance® certification program that is based on the IEEE
802.11e amendment. WMM ensures QoS for latency-sensitive traffic in the air. WMM divides the traffic
into four queues or access categories:
 voice
 video
 best effort
 background
The traffic is prioritized based on the queue it belongs to. The order of priority is voice > video > best
effort > background. Like WMM for QoS in air, QoS on the wired side of the network is dictated by the
DiffServ Code Point (DSCP) and 802.1p tagging. To ensure end-to-end QoS on the network, consider
these requirements:
 The DSCP tags should translate to appropriate WMM access categories and vice-versa. The
Aruba infrastructure ensures this translation between WMM and DSCP/802.1P markings when
the traffic moves across wired and wireless mediums.
 All devices in the network should be capable of and configured for QoS support. The LAN that is
between the AP and the mobility controller must recognize and prioritize DCSP-marked traffic
through the network. Similarly, the core must respect the DSCP marks from the mobility
controller to the multimedia servers.
For more information about the mapping between WMM access categories, DSCP tags and other QoS
functionalities, see the Aruba 802.11n Networks Validated Reference Design.
In the example network, the WMM parameter is enabled on the employee SSID to prioritize latency-
sensitive traffic, such as voice and video, over the standard data traffic. The DSCP-to-WMM mapping
is a configurable parameter that is available within the SSID profile. In the example network, the
DSCP-to-WMM mapping values are set to the defaults. The Aruba default DSCP-to-WMM mapping
values match the default DSCP settings of most vendors. Alter the Aruba defaults only if they vary
from your existing DSCP settings.

Table 14 summarizes the Corp-Employee SSID profile.
CLI Configuration
MC1-Sunnyvale-3600
!
wlan ssid-profile "Corp-Employee"
essid "Corp-Employee"
opmode wpa2-aes
wmm
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 36 Corp-Employee SSID
Table 14 Corp-Employee SSID Profile
SSID Profile
Network
Name
(SSID)
Authentication Encryption WMM Purpose
Corp-Employee Employee WPA2 AES Enabled All employees and corporate
devices that support 802.1X will
be in this SSID.

Figure 37 WMM enabled for Corp-Employee SSID
(available on the Advanced tab of the SSID profile)
Configuring the AAA Profiles
The AAA profiles define how users are authenticated. The AAA profile determines the user role for
unauthenticated clients (initial role) and the user role to be applied after successful authentication
(default role) based on the authentication type. The AAA profile also defines the server group that is
used for the defined authentication method and RADIUS accounting. For example, consider two
different locations, Sunnyvale and New York, where the employee WLAN should be available and
each location has its own RADIUS server. The employee SSID profile is the same, but there will be
two AAA profiles: one for Sunnyvale and one for New York, because two different servers exist for
authentication. So, APs in Sunnyvale will have a different VAP for the employee WLAN than APs in
New York.
Authentication Server and Server Groups
For authentication, ArubaOS can use the internal database or external authentication servers such as
RADIUS, LDAP, TACAS+, and Windows server. A server group is a collection of servers used for
authentication. In case of 802.1X authentication, the external RADIUS server or servers used for
802.1X authentication for a particular WLAN are grouped together as a server group. By default, the
first server on the list is used for authentication unless it is unavailable. A server group can have
different authentication servers. For example, you can create a server group that uses an LDAP server
as a backup for a RADIUS server.

Configuring the NPS Server Group for 802.1X Authentication
The example network uses the server group named NPS for 802.1X authentication of corporate users.
A RADIUS server called NPS1 is defined and added to the NPS server group. For details on 802.1X/
EAP process, see the Aruba 802.11n Networks Validated Reference Design.
CLI Configuration
MC1-Sunnyvale-3600
!
aaa authentication-server radius "NPS1"
host "10.169.130.20"
key **********
timeout 30
!
aaa server-group "NPS"
auth-server NPS1
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 38 NPS1 RADIUS Server
N O T E
If the RADIUS server is configured to return specific attributes for the users
after authentication, then the server-derived role that corresponds to the
returned attributes can be configured under server groups. For information
about configuring a server-derived role, see the ArubaOS 6.1 User Guide
available on the Aruba support site.

Figure 39 NPS sever group
Configuring the Employee AAA Profile
A AAA profile named corp-employee is used for the employee WLAN. First create a AAA profile called
corp-employee and then configure the following parameters in it:
 Default role for 802.1X authentication: employee role (see Chapter 8: Configuring the Employee
Role on page 45).
 802.1X authentication server group: NPS
 802.1X profile:
 Create the corp-employee-dot1x 802.1X profile.
 Enable termination. (By default the Termination EAP-Type is eap-peap and Termination Inner
EAP Type is eap-mschapv2.)
CLI Configuration
MC1-Sunnyvale-3600
!
aaa authentication dot1x "corp-employee-dot1x"
!
!
aaa profile "corp-employee"
authentication-dot1x "corp-employee-dot1x"
dot1x-default-role "employee"
dot1x-server-group "NPS"
!
N O T E
Aruba recommends 802.1X termination on the controller. This feature, also
known as AAA FastConnect™, offloads the cryptographic portion of 802.1X/
EAP authentication exchange to the controller, which reduces the load on the
RADIUS server. AAA FastConnect permits several hundred authentication
requests per second to be processed, which increases authentication server
scalability. This feature is very useful when the authentication server is not
802.1X capable, such as an LDAP server. For details about AAA FastConnect,
see the Aruba 802.11n Networks Validated Reference Design.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 40 corp-employee-dot1x 802.1X authentication profile
Figure 41 corp-employee AAA profile

Configuring the Employee VAP Profiles
Band steering, which is a feature of ARM, identifies dual-band-capable clients and can encourage or
force them to move to the 5 GHz band. The 5 GHz band has more channels, more bandwidth
availability, and fewer sources of interference than the 2.4 GHz band. Aruba recommends using band
steering. Figure 42 summarizes the employee VAPs used in the example network.
Figure 42 Employee VAP profiles
Table 15 lists the parameters that are configured for the Corp-Employee-LC1-Sunnyvale-6000 and
Corp-Employee-LC2-Sunnyvale-6000 VAP profiles.
Table 15 Employee VAP Profiles
VAP Profile VLAN Band Steering AAA Profile SSID Profile
Corp-Employee-LC1-Sunnyvale-6000 pool-7 -Enabled
-Prefer 5 GHz
corp-employee Corp-Employee
Corp-Employee-LC2-Sunnyvale-6000 pool-8 -Enabled
-Prefer 5 GHz
corp-employee Corp-Employee
SSID profile
• corp-employee
AAA profile
• corp-employee
SSID profile
• corp-employee
AAA profile
• corp-employee
arun_0366
Employee VAPs
vlan = pool-7
Band steering = prefer 5 GHz
vlan = pool-8

CLI Configuration
MC1-Sunnyvale-3600
!
wlan virtual-ap "Corp-Employee-LC1-Sunnyvale-6000"
aaa-profile "corp-employee"
ssid-profile "Corp-Employee"
vlan pool-7
band-steering
wmm-traffic-management-profile "corp-wmm"
!
wlan virtual-ap "Corp-Employee-LC2-Sunnyvale-6000"
aaa-profile "corp-employee"
ssid-profile "Corp-Employee"
vlan pool-8
band-steering
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 43 Corp-Employee-LC1-Sunnyvale-6000 VAP profile

Figure 44 Corp-Employee-LC2-Sunnyvale-6000 VAP profile

Aruba Networks, Inc. Configuring the Application Role and VAP Profiles | 65
Chapter 10: Configuring the Application Role and VAP Profiles
Certain devices, such as legacy handheld scanners and IP video cameras, are not capable of 802.1X/
EAP and use PSK for authentication. In cases where PSK has be to supported to accommodate the
devices that do not support 802.1X, you must create a separate user role for those applications and
devices. Unlike the employee role, this user role should be restricted only to the services and servers
required by such devices.
The example network has some SIP phones that are not capable of 802.1X and use the application
SSID. These phones use the SIP protocol and need TFTP to download configurations. These phones
in the example network need only SIP, DHCP, TFTP, DNS, and ICMP services to operate. Different
devices use different protocols for operation. The services that the devices require depend on the
vendor. Contact your device vendor to determine the services that are needed for your device
operation.
The example network assigns the application user role to the devices that associate to the application
SSID. The application role allows access only to the SIP, DHCP, TFTP, DNS, and ICMP services. The
application role ensures that the devices that associate to the application SSID access only the
required services and servers.
Before you configure the application role, first create the policies that are associated with it. The
application role in the example network uses the following policies:
 sip-session-allow (For details, see Configuring the sip-session-allow Policy on page 47.)
 dhcp-acl (predefined)
 tftp-session-allow
 dns-acl (predefined)
 icmp-acl (predefined)

Configuring the tftp-session-allow Policy
The tftp-session-allow policy allows only TFTP services between the user and TFTP servers.
Table 16 summarizes the rules used for the tftp-session-allow policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session tftp-session-allow
user alias tftp-server svc-tftp permit
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 45 tftp-session-allow policy
Table 16 Rules Used for the tftp-session-allow Policy
Rule
Number
1 user Alias tftp-server Service
svc-tftp
permit Allows TFTP sessions between the
user and TFTP servers.

Configuring the Application Role
To create the desired application role, you must order the essential firewall policies properly.
Table 17 summarizes the order of the policies in the application role that is used by the example
network.
CLI Configuration
MC1-Sunnyvale-3600
!
user-role application
access-list session sip-session-allow
access-list session dhcp-acl
access-list session tftp-Session-allow
access-list session dns-acl
access-list session icmp-acl
!
Table 17 Policies in the Application Role
Policy
Number
Policy Name Purpose
1 sip-session-allow Allows SIP service. For details, see Configuring the sip-session-allow Policy on
page 47.
2 dhcp-acl (predefined) Allows DHCP service.
3 tftp-session-allow Allows TFTP service. For details, see Configuring the tftp-session-allow Policy on
page 66.
4 dns-acl (predefined) Allows DNS service.
5 icmp-acl (predefined) Allows ICMP across the network.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 46 Application role
Configuring the Application SSID Profile
The application SSID should be used strictly for devices that are not 802.1X capable. The application
SSID uses WPA2-PSK for authentication and AES for encryption. PSKs are susceptible to social
engineering attacks and offline dictionary attacks. The passphrase and key that is used should be at
least 20 characters. To protect against social engineering attacks, the passphrase and key should not
be distributed to everyone. Only the network administrators should know the passphrase.
In the example network, the WMM parameter is enabled to prioritize latency-sensitive applications,
and the DSCP-to-WMM mapping values are set to defaults.
Table 18 summarizes the Corp-App SSID profile.
Table 18 Corp-App SSID Profile
SSID
Profile
Network
Name (SSID)
Corp-App Application WPA2-PSK AES Enabled Only for legacy devices that are
not 802.1X capable.

CLI Configuration
MC1-Sunnyvale-3600
!
wlan ssid-profile "Corp-App"
essid "Application"
opmode wpa2-psk-aes
wmm
wpa-passphrase **********
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 47 Corp-App SSID profile

Configuring the Application AAA Profile
A AAA profile named corp-app is used for the application WLAN. PSK is used for authentication, so
the default role that is assigned to authenticated users is specified in the initial role parameter of the
AAA profile. To reduce the number of profiles, Aruba has included the default-psk profile within the
802.1X profile. The profiles are combined because the dynamic key generation process of a WPA™/
WPA2 PSK process is similar to that key generation process of 802.1X/EAP. The PSK passphrase is
run through an algorithm that converts it into a pairwise master key (PMK). This PMK is used in the
four-way handshake process to generate the dynamic encryption keys. Select the predefined profile
named default-psk as the 802.1X profile when PSK is used for authentication.
The following parameters are configured in the corp-app AAA profile:
 Initial Role: application role (see Configuring the Application Role on page 67)
 802.1X Profile: default-psk (predefined)
CLI Configuration
MC1-Sunnyvale-3600
!
aaa profile "corp-app"
initial-role "application"
authentication-dot1x "default-psk"
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 48 corp-app AAA profile
N O T E
If you do not assign an 802.1X profile in the AAA profile that is used for PSK,
connectivity issues may occur.

Configuring the Application VAP Profiles
Figure 49 summarizes the application VAP profiles used in the example network.
Figure 49 Application VAP profiles
Table 19 lists the parameters that are configured for the Corp-App-LC1-Sunnyvale-6000 and Corp-
APP-LC2-Sunnyvale-6000 VAP profiles.
CLI Configuration
MC1-Sunnyvale-3600
!
wlan virtual-ap "Corp-App-LC1-Sunnyvale-6000"
aaa-profile "corp-app"
ssid-profile "Corp-App"
vlan pool-7
band-steering
!
wlan virtual-ap "Corp-App-LC2-Sunnyvale-6000"
aaa-profile "corp-app"
ssid-profile "Corp-App"
vlan pool-8
band-steering
!
Table 19 Application VAP Profiles
VAP Profile VLAN Band Steering AAA Profile SSID Profile
Corp-App-LC1-Sunnyvale-6000 pool-7 -Enabled
-Prefer 5 GHz
corp-app Corp-App
Corp-App-LC2-Sunnyvale-6000 pool-8 -Enabled
-Prefer 5 GHz
corp-app Corp-App
SSID profile
• corp-app
AAA profile
• corp-app
SSID profile
• corp-app
AAA profile
• corp-app
arun_0386
Application VAPs
vlan = pool-7
vlan = pool-8

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 50 Corp-App-LC1-Sunnyvale-6000 VAP profile

Figure 51 Corp-App-LC2-Sunnyvale-6000 VAP profile

Aruba Networks, Inc. Configuring the Guest Roles and VAP Profile | 75
Chapter 11: Configuring the Guest Roles and VAP Profile
Guest usage in enterprise wireless networks requires the following special consideration:
 Guest users must be separated from employee users by VLANs in the network.
 Guests must be limited not only in where they may go, but also by what network protocols and
ports they may use to access resources.
 Guests should be allowed to access only the local resources that are required for IP
connectivity. These resources include DHCP and possibly DNS if an outside DNS server is not
available. In most cases, a public DNS is always available.
 All other internal resources should be off limits for the guest. This restriction is achieved usually
by denying any internal address space to the guest user.
 A time-of-day restriction policy should be used to allow guests to access the network only during
normal working hours, because they should be using the network only while conducting official
business. Accounts should be set to expire when their local work is completed, typically at the
end of each business day.
Figure 52 Guest access has a time limit
 A rate limit can be put on each guest user to keep the user from using up the limited wireless
bandwidth. Employee users should always have first priority to the wireless medium for
conducting company business. Remember to leave enough bandwidth to keep the system
usable by guests. Aruba recommends a minimum of 10% of total bandwidth be made available
to guests. Guests can always burst when the medium is idle. For information about how to
configure these bandwidth parameters, see Traffic Management Profile on page 105.
Figure 53 Guest access has a bandwidth limit
arun_060
No access
after hours
Access controlled
arun_061
Mobility
controller
Data Controlled
data

Unlike employees, the guest users typically log in through a captive portal. Usually, guests are
assigned two different roles. One role is assigned when they associate to the guest SSID and the other
is assigned when they authenticate successfully through the captive portal. Only the guests who
successfully authenticate are allowed to use to the services needed to connect to the internet.
The example network uses the guest-logon role as the initial role and the auth-guest role for
authenticated guests. Before you configure these two roles, first create the policies that are associated
with them.
The guest-logon role uses these policies:
 Amigopod
 captiveportal (predefined policy)
 guest-logon-access
 block-internal-access
The auth-guest role uses these policies:
 guest-logon-access
 block-internal-access
 auth-guest-access
 drop-and-log
Guest authentication and management can be provided through the internal resources of the Aruba
controller or through Amigopod. The internal resources of the Aruba controller can be used for visitor
management in small deployments. However, Aruba recommends the use of Amigopod for visitor
management in large campuses. For information on deploying the Aruba controller for visitor
management, see the ArubaOS 6.1 User Guide available on the Aruba support site. For more
information on the special features and deployment scenarios of Amigopod, see the Amigopod
deployment guide available at Amigopod support site. This VRD explains only the configurations
required on the Aruba controller when Amigopod is used for visitor management.
Configuring the Amigopod Policy
The Amigopod policy allows HTTP and HTTPS traffic only to the Amigopod server that is defined in the
Amigopod alias. This policy used in the preauthenticated role allows the client-based HTTP and
HTTPS traffic to reach the hosted captive portal pages on the Amigopod appliance.
Table 20 summarizes the rules used by the Amigopod policy.
Table 20 Rules Used by the Amigopod Policy
Rule
Number
Source Destination Service Time Range Action Purpose
1 User Alias
Amigopod
Service
svc-http
Working-hours Scr-nat This rule allows HTTP traffic from
the users to Amigopod server. The
permitted traffic is source-NATed.
2 User Alias
Amigopod
Service
svc-https
Working-hours Scr-nat This rule allows HTTPS traffic from
the users to Amigopod server. The

CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session Amigopod
user alias Amigopod svc-http src-nat
user alias Amigopod svc-https src-nat
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 54 Amigopod policy
Configuring the guest-logon-access Policy
The guest-logon-access policy is similar to the predefined logon-control policy, but it is much more
restrictive. The guest-logon-access policy is a part of the guest-logon and auth-guest roles. The rules
defined in this policy allow these exchanges:
 Allow DHCP exchanges between the user and the DHCP server during business hours, but
block other users from responding to DHCP requests.
 Allow DNS exchanges between the user and the public DNS server during business hours.
Traffic is source-NATed using the IP interface of the controller for the guest VLAN.
Guest users are denied access to the internal network, so the Public-DNS alias is used. All the DNS
queries of the guest users are forwarded to these public DNS servers.
A time range is used to allow users to associate to the guest network only during certain hours of the
day. A time range called Working-hours is created and used in the example network.

Table 21 summarizes the rules used by the guest-logon-access policy.
CLI Configuration
MC1-Sunnyvale-3600
!
time-range "Working-hours" periodic Weekday 07:30 to 17:30
!
ip access-list session guest-logon-access
user any udp 68 deny
any any svc-dhcp permit time-range Working-hours
user alias Public-DNS svc-dns src-nat time-range Working-hours
!
Table 21 Rules Used by the guest-logon-access Policy
Rule
Number
Source Destination Service
Time
Range
Action Purpose
1 User Any UDP
min port = 68
max port = 68
Drop This rule drops responses from a
personal DHCP server. This action
prevents the clients from acting as
DHCP servers. (This rule should
be active always and not just
during the working hours.)
2 Any Any Service
svc-dhcp
(udp 67 68)
Working-hours Permit This rule allows clients to request
and discover DHCP IP addresses
over the network. The DHCP
server on the network does not fall
under the user category.
Therefore, its response on port 68
is not dropped by the first rule. The
first two rules guarantee that
DHCP is processed only by
legitimate DHCP servers on the
network.
3 Any Alias
Public-DNS
Service
svc-dns
(udp 53)
Working-hours Scr-nat This rule allows DNS queries only
to the DNS servers that are
defined in the Public-DNS alias.
The allowed traffic is source-
NATed.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 55 Time range
Figure 56 guest-logon-access policy

Configuring the block-internal-access Policy for the Guest Role
The internal resources of an organization should be available only to employees or to the trusted
groups. Guest users are not part of the trusted entity, so they must be denied access to all internal
resources. As the name implies, the block-internal-access policy denies access to all internal
resources. This policy is a part of the guest-logon and auth-guest roles.
Table 22 summarizes the rule used by the block-internal-access policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session block-internal-access
user alias Internal-Network any deny
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 57 block-internal-access policy
Table 22 Rule Used by the block-internal-access Policy
Rule
Number
1 User Alias
Internal-Network
Any Drop This rule denies access to all the addresses
that are in the Internal- Network alias.

Configuring the auth-guest-access Policy
The most important purpose of the auth-guest-access policy is to define the protocols and ports that
the users are allowed to access. This policy is an integral part of the auth-guest role. The auth-guest-
access policy allows HTTP and HTTPS traffic to go to any destination from the user during business
hours. The traffic is source-NATed using the IP interface of the controller for the guest VLAN.
Table 23 summarizes the rules used by the auth-guest-access policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session auth-guest-access
user any svc-http src-nat time-range Working-hours
user any svc-https src-nat time-range Working-hours
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 58 auth-guest-access policy
Table 23 Rules Used by the auth-guest-access Policy
Rule
Number
Source Destination Service
Time
Range
Action Purpose
1 User Any Service
svc-http
Working-hours Scr-nat This rule allows HTTP traffic from
the users to any destination. The
2 User Any Service
svc-https
Working-hours Scr-nat This rule allows HTTPS traffic
from the users to any destination.
The permitted traffic is source-
NATed.

Configuring the drop-and-log Policy
The drop-and-log policy denies all traffic and records the network access attempt.
Table 24 summarizes the rule used by the drop-and-log policy.
CLI Configuration
MC1-Sunnyvale-3600
!
ip access-list session drop-and-log
user any any deny log
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 59 drop-and-log
Table 24 Rule Used by the drop-and-log Policy
Rule
Number
Source Destination Service Action Log Purpose
1 User Any Any Deny Yes This rule denies access to all services on
the network and logs the network access
attempt.

Configuring the Initial Guest Role
The guest-logon role is the first role that is assigned to the users when they associate with the guest
SSID. A user in this role has access only to the DHCP and DNS services. Unlike 802.1X/EAP, captive
portal is a Layer 3 type authentication. A user who associates to the guest SSID is given an IP address
and related DNS information even before he authenticates himself. When this user opens the browser
and tries to access a web page, the guest-logon role directs him to a captive portal page. The captive
portal page requires login credentials. The captive portal authentication profile that is appended to this
role specifies the captive portal login page and other configurable parameters, such as the default role,
the authentication server, and the welcome page. To create and add the captive portal authentication
profile to this initial guest role, see Configuring the Captive Portal Authentication Profile for Guest
WLAN on page 89.
Table 25 summarizes the policies used in the guest-logon role.
CLI Configuration
MC1-Sunnyvale-3600
!
user-role guest-logon
access-list session Amigopod
access-list session captiveportal
access-list session guest-logon-access
access-list session block-internal-access
!
Table 25 Policies Used in the guest-logon Role
Policy
Number
Policy Name Purpose
1 Amigopod Allows the client-based HTTP and HTTPS traffic to reach the hosted captive
portal pages on the Amigopod appliance. If this policy is not used in the guest-
logon role, the guest users cannot proceed to the login page on the Amigopod.
The preauthenticated guest logon policy is usually designed to deny all traffic
other than DHCP and DNS traffic. For details, see Configuring the Amigopod
Policy on page 76.
2 captiveportal (predefined policy) This predefined policy initiates captive portal authentication. This policy redirects
any HTTP or HTTPS traffic to port 8080, 8081, or 8088 of the controller. When the
controller sees traffic on these ports, it checks the captive portal authentication
profile that is associated with the current role of the user and processes the
values specified on this profile.
3 guest-logon-access This policy allows DHCP and DNS services. For details, see Configuring the
guest-logon-access Policy on page 77.
4 block-internal-access This policy blocks access to the entire internal network. For details, see
Configuring the block-internal-access Policy for the Guest Role on page 80.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 60 guest-logon role

Configuring the Authenticated Guest Role
The auth-guest role is the role that is assigned to guest users after they authenticate successfully
through the captive portal. This role is the default role in the captive portal authentication profile. In
addition to restricting the network access to business hours, this role allows only HTTP and HTTPS
services to access the Internet.
If an organization wants its guest users to use the printers in the internal network, a separate policy
must be created that allows user traffic to an alias called printers. This alias must include only the IP
address of the printers that the guests are allowed to use. Place this policy in the auth-guest user role
just above the block-internal-access policy.
Table 26 summarizes the policies used in the auth-guest role.
CLI Configuration
MC1-Sunnyvale-3600
!
user-role auth-guest
max-sessions 65535
access-list session cplogout
access-list session guest-logon-access
access-list session block-internal-access
access-list session auth-guest-access
access-list session drop-and-log
!
Table 26 Policies Used in the auth-guest Role
Policy
Number
Policy Name Purpose
1 cplogout (predefined policy) This policy makes the controller present captive portal logout window. If the user
attempts to connect to the controller on the standard HTTPS port (443) the client
will be NATed to port 8081, where the captive portal server will answer. If this rule
is not present, a wireless client may be able to access the controller's
administrative interface.
2 guest-logon-access This policy denies personal DHCP servers and provides legitimate DHCP
services and DNS.
3 block-internal-access This policy blocks access to internal network. This policy should be placed before
the next policy that allows HTTP and HTTPS service, otherwise guest users will
have access to the internal websites.
4 auth-guest-access This policy allows HTTP and HTTPS services to any destination.
5 drop-and-log Any traffic that does not match the previous policies encounters this policy. This
policy denies all services and logs the network access attempt.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 61 auth-guest
Maximum User Sessions for Guest Role
Though it is a very small possibility, a malicious user can connect to the guest network and initiate a
denial of service (DoS) attack by using up all of the 65535 sessions available. To defend against such
an attack, restrict the maximum number of sessions per user in a role. Aruba recommends that you
restrict the maximum sessions per user in the guest role to 128. This limitation should be placed on all
the roles used in the guest network.
The example network restricts the maximum sessions per user in the guest role to 128. This value is
applied to the guest-logon and auth-guest roles.
CLI Configuration
MC1-Sunnyvale-3600
!
max-sessions 128
!
user-role auth-guest
max-sessions 128
!

Configuring the Guest SSID Profile
The guest SSID does not provide any Layer 2 authentication and encryption. The Layer 2
authentication type used is open. In open authentication, hello messages are exchanged with the
client before it is allowed to associate and obtain necessary IP information. All the user traffic is
unencrypted. This WLAN uses captive portal to authenticate the users. The users that associate to this
SSID are placed in the guest VLAN. Captive portal should never be used for employee authentication,
because captive portal does not provide encryption. The wireless traffic is visible to anyone doing a
passive packet capture unless the data is encrypted by higher-layer protocols such as HTTPS and
IPsec.
Table 27 summarizes the guestnet SSID profile.
CLI Configuration
MC1-Sunnyvale-3600
!
wlan ssid-profile "guestnet"
essid "Guest"
opmode opensystem
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 62 guestnet SSID profile
Table 27 guestnet SSID Profile
SSID
Profile
Network
Name (SSID)
guestnet Guest Open none __ Guest users (Captive portal is a
Layer 3 authentication type.)

Configuring the Server Group for Guest Authentication
The core of Amigopod is a RADIUS server that uses the default ports of 1812 for authentication and
1813 for accounting. In the example network, a RADIUS server called Amigopod is defined and added
to a newly created server group called Guest-Amigopod. The Guest-Amigopod server group is used as
the server group for captive portal authentication.
CLI Configuration
MC1-Sunnyvale-3600
!
aaa authentication-server radius "Amigopod"
host "10.169.130.50"
key ****************
!
aaa server-group "Guest-Amigopod"
auth-server Amigopod
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 63 Amigopod RADIUS server

Figure 64 Guest-Amigopod server group
Configuring the Captive Portal Authentication Profile for Guest WLAN
As discussed earlier, to authenticate the users associated with the guest SSID via captive portal, you
must define and attach a captive portal profile to the initial role assigned to the guest users.
Configurable parameters such as the default role, login page, welcome page, and others are available
in a captive portal profile.
The following parameters are configured in the guestnet captive portal authentication profile used in
the example network:
 The default role is auth-guest: This role is assigned to users after authentication (see
Configuring the Authenticated Guest Role on page 85).
 Configure the login page: The value specified here is the URL to the login page hosted on the
Amigopod server. In the example network, this value is set to https://10.169.130.50/
Aruba_login.php. When users in the initial guest role try to access internet through HTTP or
HTTPS protocol, they are redirected to the login page specified in this field.
 Configure the welcome pages (optional): The value specified here can be the URL to the
welcome page hosted on the Amigopod server, the default value, or any other external page like
www.arubanetworks.com. In the example network, this value is set to www.arubanetworks.com/
vrd. The welcome page specified in this field is displayed after successful authentication.
 All other parameters use the default values.
For details about configuration of Amigopod and its integration with Aruba controllers, see the
Amigopod deployment guide available at Amigopod support site.

CLI Configuration
MC1-Sunnyvale-3600
!
aaa authentication captive-portal "guestnet"
default-role "auth-guest"
server-group "Guest-Amigopod"
login-page "https://10.169.130.50/Aruba_login.php"
welcome-page "http://www.arubanetworks.com/vrd"
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 65 guestnet captive portal profile
After you have configured the captive portal profile, append it to the initial role, which is the guest-
logon role in the example network.

CLI Configuration
MC1-Sunnyvale-3600
!
captive-portal guestnet
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 66 Appending captive portal profile to initial guest role

Configuring the Guest AAA Profile
Any user that accesses the network through the guest SSID is assigned the initial role specified in the
guest AAA profile. The example network uses the guest-logon role as the initial role. This initial role is
designed to allow DHCP and DNS, so the user gets an IP address. When the user opens up a
browser, the user does a DNS lookup for his homepage. The guest-logon role permits DNS, so the
homepage URL is resolved. When the user requests that page via HTTP/HTTPS, the captive portal
ACL in the guest-logon role redirects that traffic to the controller on port 8080, 8081 or 8088. When the
controller sees the traffic on one of these ports, it checks the current role of the user, which is the
guest-logon role. The controller implements the parameters that are specified in the captive portal
authentication profile that is tied to this role. After the user authenticates, the user is placed in an auth-
guest role, which is the default role specified in the captive portal authentication profile.
A AAA profile named guestnet is used for the guest WLAN. In the guestnet AAA profile, configure the
guest-logon role (see Configuring the Initial Guest Role on page 83) as the initial role.
CLI Configuration
MC1-Sunnyvale-3600
!
aaa profile "guestnet"
initial-role "guest-logon"
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 67 guestnet AAA profile

Configuring the Guest VAP Profile
A guest VAP profile named “guestnet” is used in the example network. Figure 68 summarizes the
guest VAP profile used in the example network.
Figure 68 Guest VAP
Table 28 lists the parameters that are configured for the guestnet VAP profile.
CLI Configuration
MC1-Sunnyvale-3600
!
wlan virtual-ap "guestnet"
aaa-profile "guestnet"
ssid-profile "guestnet"
vlan 900
band-steering
!
Table 28 guestnet VAP Profile
AAA Profile SSID Profile Band Steering VLAN
guestnet guestnet -Enabled
-Prefer 5 GHz
900
SSID profile
• guestnet
AAA profile
• guestnet
arun_0387
Guest VAPs
• guestnet
vlan = 900

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 69 guestnet VAP profile

Aruba Networks, Inc. Configuring the Radio Profiles | 95
Chapter 12: Configuring the Radio Profiles
The 802.11a and 802.11g radio profiles form the core of RF management. The various profiles and
options under RF management allow you to configure these things:
 radio tuning and calibration
 AP load balancing
 coverage hole detection
 received signal strength indicator (RSSI) metrics
Primarily, the 802.11a and 802.11g radio profiles determine the mode in which an AP radio operates.
A radio can be made to operate in one of the following three predefined modes:
 ap-mode (for typical APs)
 am-mode (for AMs)
 spectrum-mode (for SMs)
The 802.11a and 802.11g profiles are independent of each other. So, a dual-radio AP can be
configured to behave as an AM in one spectrum band and function as a regular AP in the other band.
In addition to the basic radio settings, the 802.11a and 802.11g radio profiles within an AP group
include these profiles:
 ARM profile (required only for client access APs)
 high-throughput radio profile
 spectrum profile (required only for dedicated SMs)
 AM scanning profile (required only for AMs)
Configuring the ARM Profile
The Aruba Adaptive Radio Management (ARM) feature is a set of tools that allow the WLAN
infrastructure to make decisions about radio resources and client connections without manual
intervention by network administrators or client-side software.
The ARM algorithms and services use the information that APs and AMs gather when they scan the
RF environment. The infrastructure has a network-wide view of APs and clients, and this information is
used to make adjustments to provide an optimal client experience.
The Aruba ARM feature provides the following functionalities:
 channel and power setting
 client-aware ARM
 voice-aware scanning
 video-aware scanning
 rogue-aware scanning
 load-aware scanning
 band steering

 spectrum load balancing
 mode-aware ARM
 adjusting receive sensitivity
 reducing rate adaptation
 dynamic multicast optimization (DMO)
 fair access
 local probe request threshold
 station handoff assist
The entire ARM feature set is not available in one place. Most features are configurable in the ARM
profile. Band steering and DMO, which are defined per VAP, are available under VAP profiles. Fair
access is in the traffic management profile. Spectrum load balancing and receive sensitivity options
are defined within the 802.11a and 802.11g profiles. For detailed information on ARM, its features, and
its advantages over traditional methods, see the Aruba 802.11n Networks Validated Reference
Design.
Table 29 summarizes the recommended ARM settings.
Table 29 ARM Recommendation Matrix
Feature
Sparse AP with
Data Only
Dense AP with
Data Only
When Enabling
Video
When Enabling
Voice
ARM
Assignment
Single band (default)
Multiband (for single-
radio APs)
radio APs)
radio APs)
radio APs)
Client-Aware ARM Enabled Enabled Enabled Enabled
Voice-Aware Scanning Enabled Enabled Enabled Enabled
Video-Aware Scanning Enabled Enabled Enabled Enabled
Load-Aware Scanning 10 Mb/s (default) 10 Mb/s (default) 10 Mb/s (default) 10 Mb/s (default)
Power-Save-Aware
Scanning
Disabled Disabled Disabled Disabled
Rogue-Aware
Scanning
Disabled except for high
security environments
Band Steering Enabled, prefer 5 GHz
(default)
Enabled, prefer 5 GHz
(default)
(default)
(default)
Spectrum Load
Balancing
Disabled Enabled Enabled Disabled
Mode-Aware ARM Disabled Disabled Disabled Enable only to solve
client issues
Adjusting Receive
Sensitivity
Disabled Disabled Disabled Disabled
Local Probe Request
Threshold
Disabled Enabled
(value = 25 dB)
Enabled
(value = 25 dB)
Enabled
(value = 25 dB)
Station Handoff Assist Disabled Disabled Disabled Disabled

Any deployment designed for coverage rather than capacity is considered as sprase. Network
administrators should choose from the recommended settings mentioned in the table, depending on
the traffic type and density of the deployment. For example, an organization that uses a separate AP
group for lobby APs can use the spare deployment settings for all lobby APs and dense deployment
settings for the others. Likewise, organizations with data, voice, and video on the network should
follow the recommended settings for voice, but enable DMO to improve the efficiency for multicast
video streaming.
The ARM profile is required only for APs that participate in ARM and not for the dedicated AMs or
SMs. The scan-mode parameter in the ARM profile determines the scanning capabilities on an AP.
This value can be set to:
 all-reg-domain: Scans all the channels in a spectrum band.
 reg-domain: Scans only the legal channels in a band. The legal channels in a band are
determined by the local regulatory body.
The example network depicts a dense campus deployment with voice and data traffic. So, the example
network uses the recommended settings for voice traffic for the ARM profile. The scan-mode is set as
all-reg-domain.
CLI Configuration
MC1-Sunnyvale-3600
!
rf arm-profile "corp-arm"
voip-aware-scan
no ps-aware-scan
scan-mode all-reg-domain
!
Intelligent Rate
Adaptation
Always on, not configurable
Dynamic Multicast
Optimization
Disabled Disabled Enabled – higher of 40 or
3 x number of VLANs
Disabled
Fair Access Enabled Enabled Enabled Enabled
Table 29 ARM Recommendation Matrix (Continued)
Feature
Sparse AP with
Data Only
Dense AP with
Data Only
When Enabling
Video
When Enabling
Voice

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 70 corp-arm ARM profile
Configuring the 802.11a and 802.11g Radio Profiles
The 802.11a and 802.11g radio profiles dictate the operation of the 5 GHz and 2.4 GHz radios
respectively. Figure 71 summarizes the radio profiles used for the client access AP groups in the
example network.
Figure 71 Radio profiles of client access AP groups
802.11a radio profile
• AP
mode = ap-mode
802.11g radio profile
• AP
mode = ap-mode
ARM profile
• corp-arm
ARM profile
• corp-arm
arun_0365

Table 30 summarizes the 802.11a and 802.11g radio profiles used in the example network by the AP
groups built for client access.
CLI Configuration
MC1-Sunnyvale-3600
!
rf dot11a-radio-profile "AP"
arm-profile "corp-arm"
!
rf dot11g-radio-profile "AP"
arm-profile "corp-arm"
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 72 AP 802.11a radio profile
Table 30 Radio Profiles of Client Access AP Groups
Profile Type
Profile
Name
Mode ARM Profile
AM
Scanning
profile
Purpose
802.11a radio
Profile
AP ap-mode corp-arm __ Makes the 5 GHz radio function
as a typical AP.
802.11g radio
Profile
AP ap-mode corp-arm __ Makes the 2.4 GHz radio
function as a typical AP.

Figure 73 AP 802.11g radio profile

Aruba Networks, Inc. Configuring the AP System Profiles | 101
Chapter 13: Configuring the AP System Profiles
AP system profile defines these kinds of options:
 the LMS and backup LMS IP
 the real-time location services (RTLS) server values
 the number of consecutive missed heartbeats on a GRE tunnel before an AP bootstraps
In Aruba terminology, the local management switch (LMS) is the controller that manages the AP and
its traffic. In a typical deployment, when an AP boots up for the first time, it contacts the master
controller. The master uses the lms-ip parameter to direct the AP to the mobility controller on which it
should terminate its GRE tunnel. The lms-ip parameter is contained in the AP system profile of the AP
group that is assigned to that AP. If defined, the backup LMS IP is used by the AP when the original
controller becomes unreachable.
The example network does not use a backup LMS IP because the VRRP between the local controllers
addresses the redundancy issue. For information about the advantages of VRRP and the use cases
for backup LMS IP, see the Aruba Mobility Controllers and Deployment Models Validated Reference
Design.
These two AP system profiles are used in the example network:
 LC1-Sunnyvale-6000
 LC2-Sunnyvale-6000
Only the lms-ip parameter is configured in both these AP system profiles in the master controller MC1-
Sunnyvale-3600 of the example network. All other parameters are unaltered from their defaults.
Table 31 summarizes the AP system profiles used in the example network.
Table 31 AP System Profiles
Profile Name LMS IP Purpose
LC1-Sunnyvale-6000 10.169.145.7 This profile terminates the APs on LC1-Sunnyvale-6000 controller
because it is the active controller for the VRRP-7 VIP 10.169.145.7. So if
this controller fails, the VRRP makes the LC2-Sunnyvale-6000 controller
the active controller for the VRRP-7, which eliminates the need to define
a backup LMS IP.
LC2-Sunnyvale-6000 10.169.145.8 This profile terminates the APs on the LC2-Sunnyvale-6000 controller
because it is the active controller for the VIP 10.169.145.8.

CLI Configuration
MC1-Sunnyvale-3600
!
ap system-profile "LC1-Sunnyvale-6000"
lms-ip 10.169.145.7
!
ap system-profile "LC2-Sunnyvale-6000"
lms-ip 10.169.145.8
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 74 LC1-Sunnyvale-6000 AP system profile

Figure 75 LC2-Sunnyvale-6000 AP system profile

Aruba Networks, Inc. Configuring the QoS | 105
Chapter 14: Configuring the QoS
The QoS profiles configure the traffic management and VoIP functions. The three main QoS profiles
are these:
 WMM traffic management profile
 traffic management profile
 VoIP call admission control profile
Traffic Management Profile
The traffic management profile can be used to provide a service level agreement (SLA). The SLA
guarantees a minimum percentage of available bandwidth to be allocated to a VAP when the wireless
network is congested. The traffic management profile also defines the interval between bandwidth
usage reports.
The traffic management profile is applied on a per radio basis, which means that an AP can have
different traffic management profiles for the 802.11a radio and for the 802.11g radio. Traffic shaping
must be set to fair-access to activate this bandwidth allocation value set for an individual VAP. When
the traffic shaping feature is enabled, an AP tracks all active BSSIDs on a radio, all clients that are
connected to the BSSID, and the 802.11a/g, 802.11b, or 802.11n capabilities of each client. During
each sampling period, airtime is allocated to each client so that it can send and receive traffic.
Two traffic management profiles are used in the example network because the VAPs of the two client
access AP groups are different. Table 32 summarizes the traffic management profiles that are used in
the example network.
Table 32 Traffic Management Profiles Used in Example Network
Profile Name Share per VAP
Station
Shaping
Policy
Usage
traffic-LC1-Sunnyvale-6000 45% (corp-employee-LC1-Sunnyvale-6000)
45% (corp-app-LC1-Sunnyvale-6000)
10% (guestnet)
fair-access Used for AP group AP-LC1-Sunnyvale-
6000.
traffic-LC2-Sunnyvale-6000 45% (corp-employee-LC2-Sunnyvale-6000)
45% (corp-app-LC2-Sunnyvale-6000)
10% (guestnet)
fair-access Used for AP group AP-LC2-Sunnyvale-
6000.

CLI Configuration
MC1-Sunnyvale-3600
!
wlan traffic-management-profile "traffic-LC1-Sunnyvale-6000"
bw-alloc virtual-ap "Corp-App-LC1-Sunnyvale-6000" share 45
bw-alloc virtual-ap "Corp-Employee-LC1-Sunnyvale-6000" share 45
bw-alloc virtual-ap "guestnet" share 10
shaping-policy fair-access
!
wlan traffic-management-profile "traffic-LC2-Sunnyvale-6000"
bw-alloc virtual-ap "Corp-App-LC2-Sunnyvale-6000" share 45
bw-alloc virtual-ap "Corp-Employee-LC2-Sunnyvale-6000" share 45
bw-alloc virtual-ap "guestnet" share 10
shaping-policy fair-access
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 76 traffic-LC1-Sunnyvale-6000 traffic management profile

Figure 77 traffic-LC2-Sunnyvale-6000 traffic management profile
VoIP Call Admission Control Profile
Theoretically, based on a pure bandwidth perspective, an 802.11n AP can support hundreds of
simultaneous voice calls. But in practice, the limiting factor is contention for the wireless medium. The
802.11 technology uses a collision-avoidance algorithm that makes timely access to the wireless
media a challenge for delay-sensitive devices. Even with prioritization enabled for voice traffic, as the
number of simultaneous voice clients increases, the contention increases, which delays the access to
the wireless medium. Due to this limitation, the number of simultaneous voice calls that a single AP
must process must be limited. VoIP call admission control (CAC) lets the Aruba controller limit the
number of voice calls on an AP and proactively move voice clients to a less-utilized AP. Aruba
controllers implement CAC by statefully following voice protocols and being aware of the voice
utilization of a given AP. In a mixed-client environment, Aruba recommends that you limit the number
of simultaneous active voice calls to 12 and reserve 25% of this call limit for roaming clients on an
active call. In a pure 802.11n environment where all the voice clients are 802.11n-capable, this value
can be increased to 18-20 clients with 25% reserved for roaming clients.
The example network has 802.11a/b/g and n clients, so the VoIP CAC profile that is used in the
example network limits the number of active voice calls to 12.
Table 33 summarizes the VoIP CAC profile that is used by the example network.
Table 33 VoIP Call Admission Control Profile Used in Example Network
Profile Name
VoIP Call Admission
Control
VoIP Call Capacity
VoIP Call Handoff
Reservation
corp-voip-cac Enabled 12 25%

CLI Configuration
MC1-Sunnyvale-3600
!
wlan voip-cac-profile <corp-voip-cac>
call-admission-control
call-capacity 12
call-handoff-reservation 25
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 78 corp-voip-cac VoIP call admission control profile

Aruba Networks, Inc. Configuring the Client Access AP Groups | 109
Chapter 15: Configuring the Client Access AP Groups
An AP group is a unique collection of configuration profiles. After you have configured all the required
profiles, it is easy to form an AP group. To form an AP group, simply mix-and-match profiles based on
the requirements.
The AP-LC1-Sunnyvale-6000 AP group is used for all APs that must be managed by the LC1-
Sunnyvale-6000 local controller. The AP-LC2-Sunnyvale-6000 AP group is used for all APs that must
be managed by the LC2-Sunnyvale-6000 local controller.
Table 34 summarizes the two AP groups that are used to provide client access in the example network
and the profiles associated with each of these AP groups.
Table 34 AP-LC1-Sunnyvale-6000 and AP-LC2-Sunnyvale-6000 AP Groups
Profile
Categories
Profile Type
Profiles Used
Profiles Used
Wireless LAN VAP profile corp-employee-LC1-Sunnyvale-6000
corp-app-LC1-Sunnyvale-6000
guestnet
corp-employee-LC2-Sunnyvale-6000
corp-app-LC2-Sunnyvale-6000
guestnet
RF Management 802.11a radio profile AP AP
802.11g radio profile AP AP
AP AP system profile LC1-Sunnyvale-6000 LC2-Sunnyvale-6000
QoS 802.11a traffic management
profile
traffic-LC1-Sunnyvale-6000 traffic-LC2-Sunnyvale-6000
802.11g traffic management
profile
traffic-LC1-Sunnyvale-6000 traffic-LC2-Sunnyvale-6000
VoIP call admission control
profile
corp-voip-cac corp-voip-cac
IDS IDS profile (use the wizard) Corp-WIPS (Created using the
wizard, see Chapter 18: Wireless
Intrusion Prevention (IDS Profiles) of
RFProtect on page 121.)
Corp-WIPS (Created using the

CLI Configuration
MC1-Sunnyvale-3600
!
ap-group "AP-LC1-Sunnyvale-6000"
virtual-ap "guestnet"
virtual-ap "corp-app-LC1-Sunnyvale-6000"
virtual-ap "corp-employee-LC1-Sunnyvale-6000"
dot11a-radio-profile "AP"
dot11g-radio-profile "AP"
ap-system-profile "LC1-Sunnyvale-6000"
voip-cac-profile "Corp-voip-cac"
dot11a-traffic-mgmt-profile "traffic-LC1-sunnyvale-6000"
dot11g-traffic-mgmt-profile "traffic-LC1-sunnyvale-6000"
ids-profile " Corp-WIPS "
!
ap-group "AP-LC2-Sunnyvale-6000"
virtual-ap "guestnet"
virtual-ap "corp-app-LC2-Sunnyvale-6000"
virtual-ap "corp-employee-LC2-Sunnyvale-6000"
dot11a-radio-profile "AP"
dot11g-radio-profile "AP"
voip-cac-profile "corp-voip-cac"
dot11a-traffic-mgmt-profile "traffic-LC2-sunnyvale-6000"
dot11g-traffic-mgmt-profile "traffic-LC2-sunnyvale-6000"
ids-profile " Corp-WIPS "
!

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 79 AP-LC1-Sunnyvale-6000 AP group
Figure 80 AP-LC1-Sunnyvale-6000 AP group

Aruba Networks, Inc. AP Groups for Air Monitors | 113
Chapter 16: AP Groups for Air Monitors
The air monitor (AM) does not provide service to any clients, so VAP profiles and traffic management
profiles are not used by AP groups that are built for AMs. To create an AP group for AMs, you need
these profiles:
 AM scanning profile
 802.11a radio profile
 802.11g radio profile
 AP system profile
 IDS profile
In the example network, the AM-LC1-Sunnyvale-6000 AP group is designed to terminate the AMs on
VRRP-7 VIP. The AM-LC2-Sunnyvale-6000 AP group terminates the AMs on VRRP-8 VIP.
Figure 81 summarizes the AP groups used for AMs in the example network.
Figure 81 AP groups for AMs
802.11a radio profile = airmonitor
802.11b radio profile = airmonitor
802.11a radio profile = airmonitor
802.11b radio profile = airmonitor
arun_0363
AP groups for AMs
• AM-LC1-Sunnyvale-6000
• AM-LC2-Sunnyvale-6000
AP group =
AM-LC1-Sunnyvale-6000
AP group =
AM-LC2-Sunnyvale-6000

Configuring the AM Scanning Profile
The RFProtect feature set that was introduced in ArubaOS 6.0 provides the TotalWatchTM scanning
tool. When you add the RFProtect license, TotalWatch is enabled by default. TotalWatch extends the
scanning capabilities of an AM to all the 14 channels in the 2.4 GHz and to the entire 4.9 – 5.895 GHz
spectrum in 5 MHz increments.
For more information about TotalWatch, see the Aruba Mobility Controllers and Deployment Models
Validated Reference Design.
The AM scanning profile defines all the settings that are related to TotalWatch. The scanning profile
applies only to radios operating as dedicated AMs and determines their scanning capabilities. The
scanning capabilities of a radio operating as an AP are determined by the scan-mode parameter in the
ARM profile. Aruba does not recommend that you change the following four parameters of this profile
under any circumstances, unless specifically advised by the Aruba Technical Assistance Center (TAC)
team:
 Dwell time: active channels
 Dwell time: regulatory domain channels
 Dwell time: non-regulatory domain channels
 Dwell time: rare channels
The scan-mode parameter in this profile determines the range of channels that are scanned by an AM.
Aruba recommends that you set this value to rare for all AMs. If you set this value to rare on AMs, the
AMs scan the 4.9 GHz range and the entire 2.4 GHz and 5 GHz range.
!CAUTION
Only rogues on legal channels are contained wirelessly, but rogues on any
channel can be contained using wired containment. All rogues that are
detected wirelessly are reported, but wireless containment can be taken only
against rogues that operate within the regulatory domain. APs and AMs cannot
transmit, even to contain rogues, outside of the legal regulatory domain
channels they are operating in without violating local law. The 4.9 GHz range is
reserved for public safety applications in most regulatory domains. The open
source hardware drivers and software-defined radios in many consumer grade
APs mean that a malicious user could program an AP to operate illegally in this
range. Aruba AMs scan this range and report back any rogue AP found
operating on this band. However, due to regulatory restrictions, the AM cannot
contain the device.

The example network uses the AM scanning profile named am-scan for the AMs. Table 35
summarizes the AM scanning profile that is used.
CLI Configuration
MC1-Sunnyvale-3600
!
rf am-scan-profile "am-scan"
scan-mode rare
!
WebUI Screenshot
MC1-Sunnyvale-3600
Figure 82 am-scan AM scanning profile
Table 35 AM Scanning Profile Used in Example Network
AM Scanning Profile
Name
Scan Mode Purpose
am-scan rare Used for all AMs. Scans all the 14 channels in the 2.4 GHz and the entire 4.9
– 5.895 GHz spectrum in 5 MHz increments.

Configuring the 802.11a and 802.11g Radio Profiles
For AMs, the mode parameter in the 802.11a and 802.11g radio profiles is set to am-mode. Figure 83
summarizes the radio profiles used in the example network for air monitor AP groups.
Figure 83 Radio profiles for air monitor AP groups
Table 36 summarizes the 802.11a and 802.11g radio profiles used in the example network by the AP
groups built for AMs.
CLI Configuration
MC1-Sunnyvale-3600
!
rf dot11a-radio-profile "airmonitor"
mode am-mode
am-scan-profile "am-scan"
!
rf dot11g-radio-profile "airmonitor"
mode am-mode
am-scan-profile "am-scan"
!
Table 36 Radio Profiles of AP Groups Used for AMs
Profile Type Profile Name Mode
ARM
Profile
AM Scanning
Profile
Purpose
802.11a radio
profile
airmonitor am-mode __ am-scan Makes the 5 GHz radio
function as an AM
802.11g radio
profile
airmonitor am-mode __ am-scan Makes the 2.4 GHz radio
function as an AM
802.11a radio profile
• airmonitor
802.11g radio profile
• airmonitor
arun_0388
mode = am-mode mode = am-mode
AM scanning profile
• am-scan
AM scanning profile
• am-scan

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 84 airmonitor 802.11a radio profile

Configuring the AP Groups for Air Monitors
The AMs in AM-LC1-Sunnyvale-6000 AP group terminate on the LC1-Sunnyvale-6000 local controller
and the AMs in AM-LC2-Sunnyvale-6000 AP group terminate on the LC2-sunnyvale-6000 local
controller.
Table 37 summarizes the two AP groups used for AMs on the example network and the profiles
associated with each of these AP groups.
CLI Configuration
MC1-Sunnyvale-3600
!
ap-group "AM-LC1-Sunnyvale-6000"
dot11a-radio-profile "airmonitor"
dot11g-radio-profile "airmonitor"
ids-profile "Corp-WIPS"
!
ap-group "AM-LC2-Sunnyvale-6000"
ids-profile " Corp-WIPS"
!
Table 37 AM-LC1-Sunnyvale-6000 and AM-LC2-Sunnyvale-6000 AP Groups
Profile
Categories
Profile Type
Profiles Used
Profiles Used
Wireless LAN VAP profile __ __
RF Management 802.11a radio profile airmonitor airmonitor
802.11g radio profile airmonitor airmonitor
AP AP system profile LC1-Sunnyvale-6000.
For details, see Chapter 13:
Configuring the AP System Profiles
on page 101.
LC2-Sunnyvale-6000.
For details, see Chapter 13:
Configuring the AP System Profiles
on page 101
QoS 802.11a traffic management profile __ __
802.11g traffic management profile __ __
VoIP call admission control profile __ __
IDS IDS profile (use the wizard) Corp-WIPS (Created using the
Corp-WIPS (Created using the

Aruba Networks, Inc. Altering the Default AP Group for Pre 6.1 ArubaOS | 119
Chapter 17: Altering the Default AP Group for Pre 6.1 ArubaOS
The Aruba controllers running earlier versions of ArubaOS have a predefined AP group named default.
When an AP boots up and finds a controller, it is automatically placed in the default AP group. This AP
group has a default VAP and SSID that have open authentication by default. The AP now broadcasts
the default SSID to which clients can connect. Aruba recommends that network administrators change
the following defaults:
 default ap-group
 default virtual-ap
 default ssid
Aruba recommends that network administrators change the default AP group for new APs to AM mode
and create a new AP group with the specific SSIDs and related configuration to be used for the
organization. When the default is set to AM mode, anyone who plugs an unauthorized Aruba AP into
the network simply adds to the monitoring capacity and does not create a potential security
vulnerability.
To change the default AP group for new APs to an AM profile, change the default 802.11a and
802.11g radio profile of the default AP group to a radio profile that has the mode set to am-mode. The
example network uses the airmonitor radio profile for this purpose.
In ArubaOS 6.1, the default SSID has been removed from the default AP group. So an AP that is
automatically placed in the default AP group by an Aruba controller running ArubaOS 6.1 will not
broadcast any SSID.
CLI Configuration (Pre 6.1 ArubaOS)
MC1-Sunnyvale-3600
!
ap-group "default"
virtual-ap "default"
!
!CAUTION
The default SSID profile should not be used in an Aruba deployment. Network
administrators are encouraged to make the default profile an AM profile to help
protect their network from “gray market” APs that users may attempt to connect
to the WLAN.

Aruba Networks, Inc. Altering the Default AP Group for Pre 6.1 ArubaOS | 120
WebUI Screenshot (Pre 6.1 ArubaOS)
MC1-Sunnyvale-3600
Figure 85 Altering the default AP group

Aruba Networks, Inc. Wireless Intrusion Prevention (IDS Profiles) of RFProtect | 121
Chapter 18: Wireless Intrusion Prevention (IDS Profiles) of
RFProtect
In any wireless network, it is important to protect the network against wireless attacks. Wireless
security must be used in many regulated industries such as:
 healthcare
 federal
 payment card industry
The ArubaOS wireless intrusion prevention (WIP) feature of the RFProtect software module provides a
wide range of intrusion detection and intrusion prevention capabilities.
The RFProtect feature set of ArubaOS 6.1 also includes a patented containment called tarpitting. For
more details on tarpitting and other RFProtect features, see the Aruba 802.11n Networks Validated
Reference Design. The intrusion detection system (IDS) profiles define all the possible WIP settings.
Wireless security can be a complex topic with many different options, and it can be difficult to manage
the wide range of IDS profiles available. To make things easier for users, Aruba developed a set of
powerful wizards. Aruba wizards provide reasonable default values and help a user step through the
available configuration options. You select a default template that provides an acceptable level of
security for the network or a customized set of options. The wizard simplifies the selection of security
options and helps to eliminate errors in the configuration. Aruba recommends the use of the WIP
wizard for WIP configuration.
The WIP wizard provides the options to enable, define, or change the following items:
 rule-based rogue classification
 WIP policy creation and assignment to AP groups
 detection options for infrastructure attacks
 detection options for WLAN clients attacks
 protection options for infrastructure attacks
 protection options for WLAN clients attacks

Figure 86 Configuration options in the WIP wizard
In rule-based classification, an AP is classified as a suspected rouge or as a neighbor, depending on
the user-defined rules. The AP classification rules can be specified by the SSID of the AP, signal-to-
noise ratio (SNR) of the AP, and/or the number of APs that can see that AP. The rule-based
classification is very useful for differentiating neighbors and rouges.
The detection setting on the wizard for the infrastructure and the client can be turned off or set to a
predefined high, medium, or low level. The wizard also allows custom settings. The high detection
setting enables all the protection mechanisms applicable. The medium setting enables some important
protection mechanisms, and the low setting enables only the most critical protection mechanisms.
The protection settings for infrastructure have the same option as the detection settings, but the
protection settings for clients can be set only to low or high.
Security requirements are specific to each organization. Aruba recommends that you turn on all the
critical attacks that are defined in the lowest setting and then customize it to meet the needs of your
network. If you turn on all the WIP features, too many alarms can interfere with the performance of
your network and your neighboring WLANs. Consult an RF security expert and the Legal department
to determine the security needs and legal implications, if any.
The example network uses a policy named Corp-WIPS with the low setting for all the detection and
protecting options. Use the default containment settings for most deployments. The default setting for
containment has wired containment turned on and uses the tarpit-non-valid-station option for wireless
containment. For details about the configuration of WIPS, see the ArubaOS 6.1 User Guide available
on the Aruba support site.
!CAUTION
Only rogues on legal channels are contained. TotalWatch detects and reports
all the rouge APs, but action can be taken only against rogues that operate
within the regulatory domain.

Sample Screenshots
 Security summary result in the absence of a rule for rule-based classification
Figure 87 Security summary in the absence of a rule
 Security summary result on the example network after defining a rule that classifies the
ethersphere-wpa2 network as a neighbor
Figure 88 Defining a rule to identify neighbors

Figure 89 Security summary after defining a rule to identify neighbors
 Applying the Corp-WIPS policy to the AP groups in the example network
Figure 90 Applying the Corps-WIPS policy to AP groups

 In the IDS wizard, the valid SSIDs list is automatically populated with all unique SSIDs
configured in SSID profiles and any unique cluster names configured in AP mesh cluster
profiles. Only the SSIDs that are not present on the controller should be added.
Figure 91 Adding a valid SSID for the Detect Adhoc Networks feature
Figure 92 Adding a valid SSID for the SSID protection feature

Aruba Networks, Inc. Spectrum Analysis | 127
Chapter 19: Spectrum Analysis
Wi-Fi operates in the unlicensed but regulated RF bands of the 2.4 and 5 GHz spectrums. These
bands are unlicensed, so anyone can use them as long as they follow the rules and regulations of the
unlicensed spectrum. So, the possible sources of interference are large. In most cases, the presence
of an interfering device is the main reason for WLAN performance degradation. ArubaOS 6.1 offers
spectrum analysis. Spectrum analysis is an RF troubleshooting tool that identifies, classifies, and finds
sources of RF interference and provides a true visualization of the RF environment.
Spectrum analysis requires that you deploy APs as spectrum monitors (SMs). When in SM mode, an
AP does not serve clients or take part in rogue AP containment. Instead the AP samples the RF band
and provides data to the mobility controller. On the WebUI of the mobility controller, a spectrum
dashboard displays the data that is collected by the SM. The data is displayed as a series of graphs on
a user-customizable dashboard. This data is streamed to the client, and can be recorded for later
analysis. For more details about the spectrum dashboard and the basics of spectrum analysis, see the
Aruba 802.11n Networks Validated Reference Design.
Figure 93 An active SM detects interference from non-Wi-Fi sources
Microwave
Cordless
phone
arun_0307
Spectrum
monitor

Figure 94 Sample spectrum dashboard
Most organizations use spectrum analysis only during troubleshooting, but some need spectrum
analysis capabilities on a permanent basis. If you need spectrum analysis to be enabled always,
deploy APs as dedicated SMs all across the network. In these situations, use a separate AP group
with the 802.11a and 802.11g radio modes set to spectrum-mode.
When you use spectrum analysis on temporary basis to troubleshoot client problems, you can convert
an AP or AM temporarily to an SM. You need not create a separate AP group or change the radio
modes. Use the spectrum local override profile to convert an AP or AM into an SM. The AP functions
as an SM until that AP is removed from the spectrum local override profile. When it is removed from
that profile, the AP reverts back to its original configuration. The SM profile also requires that you
specify the band to be scanned. A dual-radio AP can scan the 2.4 GHz band and one of the 5 GHz
bands at the same time. However, a single-radio, dual-band AP can monitor only one band at a time.
When you change an AP radio to an SM using the local override profile, make this change through the
WebUI or CLI of the controller that terminates the AP. In campus deployments, this controller is usually
a local controller and not a master controller.
The example network uses spectrum analysis for temporary troubleshooting, so it uses the spectrum
local override profile. In the example network, AM-LC1 is changed to an SM when the AM-LC1 name
is added to the spectrum local override profile on the LC1-Sunnyvale-600 controller. Then the band to
be analyzed is specified. One radio on AM-LC1 is set to monitor the 2.4 GHz band, and the other is set
to monitor the 5 GHz upper band. When you remove AM-LC1 from the profile, it becomes an AM
again.

CLI Configuration
!
ap spectrum local-override
override ap-name AM-LC1 spectrum-band 2ghz
override ap-name AM-LC1 spectrum-band 5ghz-upper
!
WebUI Screenshot
Figure 95 Spectrum local override profile

Aruba Networks, Inc. Mobility | 131
Chapter 20: Mobility
ArubaOS uses different client mobility services to provide seamless wireless connectivity as users
move through the network. These services allow users to keep the same IP addresses and
connectivity as long as their station is active and moving through a contiguous coverage area. Mobility
in a wireless network is provided either across a Layer 2 domain (VLAN mobility) or across a Layer 3
domain (IP mobility). VLAN mobility does not scale well in a large campus deployment, because it
works only across controllers and APs that share the same VLANs (broadcast domains) among them.
Aruba recommends Layer 3 mobility any time more than two active mobility controllers are present in
the network. Though this configuration creates more overhead for the administrator initially, it leads to
a cleaner network design where VLANs exist in fewer places and are less likely to be overloaded.
ArubaOS provides Layer 3 roaming (also known as IP mobility), with the implementation of mobile IP
addressing that is specified in RFC 3344. For more information about mobility and how it works, see
the Aruba Mobility Controllers and Deployment Models Validated Reference Design.
Configuring the Mobility Domain
In the example network, employee and application WLANs that are broadcast by AP-LC1 that
terminate on VRRP-7 VIP have a different VLAN pool than the AP-LC2 that terminates on VRRP-8
VIP. In this case, when a user that is connected to the employee SSID moves from AP-LC1 to AP-LC2,
he essentially has moved across a Layer 3 domain. The user has moved from one of the VLANs in
pool-7(VLANs 150-154) to one of the VLANs in pool-8 (VLANs 155-159). This move is considered to
be a Layer 3 roaming event.
Figure 96 Layer 3 Mobility
Before you configure a mobility domain, you must determine the user VLAN(s) for which mobility is
required. To allow employees to be able to roam from one subnetwork to another, all controllers that
support the VLANs into which employee users can be placed should be part of the same mobility
domain.
arun_073
arun_0260
arun_0357
Home
agent
Foreign
agent
10.169.150.100
10.169.150.100
LAN
MD1
Sunnyvale
Client travels

A controller can be part of multiple mobility domains, but this situation is not recommended. In a
master/local operation, the mobility domain is configured on the master controller, which pushes the
information to all local controllers that are managed by it. On the individual controller, you must specify
an active domain to which that controller belongs. Though the mobility domain is configured on a
master controller, the master controller does not have to be a member of the domain.
The mobility domain uses the home agent table (HAT) to locate the home agent for each client. The
HAT maps each user VLAN ID to a home agent address. In campus deployments, use the VRRP IP as
the home agent address for the user VLAN that is included in the mobility domain. The IP address of
controller on which the APs terminate can be used as home agent address if VRRP is not
implemented.
In the example network, the clients are managed only by the local controllers. Only LC1-Sunnyvale-
6000 and LC2-sunnyvale-6000 are members of the mobility domain. Here a mobility domain called
Corp is created, which allows employee and application clients to roam across Layer 3 boundaries.
VRRP-7 IP is used as the home agent address for VLANs 150-154, and VRRP-8 IP is used as home
agent address for VLANs 155-159.
The configuration of Layer 3 mobility has two steps:
1. Create a mobility domain and the corresponding HAT on the master controller. In the example
network a mobility domain named Corp with corresponding HAT entries is created on MC1-
Sunnyvale-3600 controller.
2. Make the mobility domain created in step 1 as the active domain on the controllers that are a
part it. In the example network, the Corp mobility domain is made the active domain in LC1-
Sunnyvale-6000 and LC2-Sunnyvale-6000 controllers.
N O T E
Do not configure both a controller IP and a VRRP IP as home agent address,
otherwise multiple home agent discoveries will be sent to the controller.
N O T E
Mobility is disabled by default.
N O T E
Mobility between local controllers will work without mobility being enabled in
master controller as long as none of the HAT entries point to the master
controller as the home agent.

Table 38 lists the HAT parameters of the Corp mobility domain used in the example network.
Table 38 HAT Parameters
Subnet Netmask VLAN ID Home Agent Description
10.169.150.0 255.255.255.0 150 10.169.145.7 Corp
10.169.151.0 255.255.255.0 151 10.169.145.7 Corp
10.169.152.0 255.255.255.0 152 10.169.145.7 Corp
10.169.153.0 255.255.255.0 153 10.169.145.7 Corp
10.169.154.0 255.255.255.0 154 10.169.145.7 Corp
10.169.155.0 255.255.255.0 155 10.169.145.8 Corp
10.169.156.0 255.255.255.0 156 10.169.145.8 Corp
10.169.157.0 255.255.255.0 157 10.169.145.8 Corp
10.169.158.0 255.255.255.0 158 10.169.145.8 Corp
10.169.159.0 255.255.255.0 159 10.169.145.8 Corp

CLI Configuration
MC1-Sunnyvale-3600
!
ip mobile domain Corp
description "for Corp users"
hat 10.169.150.0 255.255.255.0 150 10.169.145.7 description "Corp"
!
LC1-Sunnyvale-6000
!
router mobile
ip mobile active-domain Corp
!
LC2-Sunnyvale-6000
!
router mobile
ip mobile active-domain Corp
!
WebUI Screenshot
Figure 97 Mobility domain for MC1-Sunnyvale-3600
N O T E
Mobility is not enabled on the MC1-Sunnyvale-3600 controller, so while you
configure the mobility domain on the master controller, ignore the following
warning:
*** WARNING ***: Mobility service is disabled (router mobile)

Figure 98 HAT on MC1-Sunnyvale-3600
Figure 99 Mobility domain LC1-Sunnyvale-6000
Figure 100 Mobility domain LC2-Sunnyvale-6000

Aruba Networks, Inc. Control Plane Security | 137
Chapter 21: Control Plane Security
ArubaOS 6.1 offers control plane security (CPsec). CPsec is a certificate-based mechanism that
protects control plane traffic using IPsec, and optionally authorizes APs to the Aruba WLAN. In
ArubaOS 6.1, CPsec is enabled by default for new deployments. Controllers that use CPsec certify
only the APs that are identified as valid APs. APs can be defined as valid either by manually adding
the APs to the campus AP whitelist or by auto provisioning. Auto provisioning is easy to deploy, and
though manual entry is cumbersome, it is more secure. Auto provisioning certifies that all APs that are
connected to the network are valid. However, this increases the chance that a rogue or unwanted AP
may also be certified. Aruba recommends that you use auto provisioning only if you are sure that all
the APs on the network are valid APs.
In a campus deployment with a master and its backup, the master controller generates a self-signed
certificate and distributes it to the local controllers and the valid APs that are connected to the network.
The certificate and keys are also passed to the backup master during periodic database
synchronization.
Figure 101 CPsec master/local cluster
N O T E
Auto provisioning should be turned off after all the APs have been certified and
have connected to the network using a secure channel. Turning off auto
provisioning prevents the controller from issuing certificates to any rogue APs
that may connect to network at a later time.
arun_0411
CPSec
trust anchor
Local Local
Master
standby
Master
active

Each master and local controller in the network that is a part of a CPsec chain has a campus AP
whitelist that includes all the valid APs in the network, regardless of whether that AP is connected to it
or not. The campus AP whitelist can be updated on any controller in the network. The changes in the
whitelist on any controller are pushed to all other controllers in the network.
If a trust anchor fails in a CPsec-enabled network that has no master controller redundancy, you must
address it immediately. If the trust anchor fails in a single master deployment, no more local controllers
can be added to the network. However, if the failed trust anchor has to be replaced with a new
controller, then all the controllers and APs should be recertified. Recertification requires that you
reboot the controllers and APs, which disrupts the network.
Deploy a backup master controller to solve this issue. The database synchronization between the
active and standby master ensures that keys and certificates are synced on the standby controller.
Aruba strongly recommends that you deploy a backup controller for the CPsec trust anchor. Make sure
that a database synchronization operation has occurred from primary master to backup at least once
after the whole network is up and running. The synchronization ensures that all the certificates, keys,
and whitelist entries that are required for CPsec are synced to the backup controller.
The example network has CPsec enabled and uses auto provisioning to validate the APs. Use auto
provisioning only if you are confident that all the APs connected to the network are valid. If you are not
sure, add the AP information manually. With auto provisioning, you can specify an IP range to which it
will apply. For more information about CPsec, see the Aruba Mobility Controllers and Deployment
Models Validated Reference Design.
CLI Configuration
MC1-Sunnyvale-3600
!
control-plane-security
auto-cert-prov
no auto-cert-allow-all
auto-cert-allowed-addrs 10.169.145.20 10.169.145.254
!
!CAUTION
If a new controller is added to an existing deployment, make sure that the
campus AP whitelist on the new controller is empty. This step is essential
because any invalid AP information on the campus AP whitelist of the new
controller is updated across all the controllers in the network.
!CAUTION
If you add a backup controller for the trust anchor in a CPsec environment, the
backup controller must be added as the lower priority controller. If you add it as
the higher priority controller, the CPsec keys and certificate of the current
master may be lost.

WebUI Screenshot
MC1-Sunnyvale-3600
Figure 102 CPsec in the example network

Aruba Networks, Inc. AP Provisioning | 141
Chapter 22: AP Provisioning
The AP can use DHCP for IP addressing and can automatically discover the Aruba controller through
a number of methods. This functionality makes it easy to add an AP to any existing employee port and
VLAN.
If the AP and Aruba controller share the same Layer 2 VLAN, then nothing else must be done. The AP
automatically discovers the controller by using the Aruba Discovery Protocol (ADP). If the AP and
controller are separated by a Layer 3 network, then two other methods are available for controller
discovery:
 An entry can be entered into the DNS of the organization for aruba-master with the IP address of
the Aruba controller.
 A DHCP option 43 value can be configured with the address of the Aruba controller. For details
about configuration of DHCP 43, see the ArubaOS 6.1 User Guide available on the Aruba
support site.
All the APs that are discovered are available on the console of the master controller. Name the APs
and assign them to the appropriate AP groups. The example network uses the DNS method.
Sample Screenshot
Figure 103 Sample AP provisioning
N O T E
Aruba recommends that you use a DNS server to provide APs with the IP
address of the master controller. This approach involves minimal changes to
the network and provides the greatest flexibility in the placement of APs.

Aruba Networks, Inc. AP Provisioning | 142

Aruba Networks, Inc. Logging | 143
Chapter 23: Logging
Almost all network deployments use syslog servers. A syslog server is the central repository for all the
event notification messages that various network devices generate. This information is useful for
troubleshooting network problems and mitigating security threats. The Aruba controller can use any of
the Local Facility (0-7) to send the syslog messages. The logging level determines how often and how
many notifications are sent to the syslog server. Logging all the notification messages can overwhelm
the logs and may make debugging difficult. Logging all the messages also increases the traffic on the
wired network. Consider these factors before you decide on the logging level. Configure syslog
settings on all the controllers from which you need logs.
The example network uses the default logging level of warnings. The warnings level forwards all
warning notifications to the syslog server.
CLI Configuration
!
logging level warnings network subcat all
logging level warnings network subcat dhcp
logging level warnings network subcat mobility
logging level warnings network subcat packet-dump
logging level warnings security subcat aaa
logging level warnings security subcat all
logging level warnings security subcat cpsec
logging level warnings security subcat db
logging level warnings security subcat dot1x
logging level warnings security subcat firewall
logging level warnings security subcat ids
logging level warnings security subcat ids-ap
logging level warnings security subcat ike
logging level warnings security subcat kerberos
logging level warnings security subcat mobility
logging level warnings security subcat ntlm
logging level warnings security subcat packet-trace
logging level warnings security subcat vpn
logging level warnings security subcat webserver
logging level warnings system subcat all
logging level warnings system subcat ap
logging level warnings system subcat configuration
logging level warnings system subcat messages
logging level warnings system subcat snmp
logging level warnings system subcat webserver
logging level warnings user subcat all
logging level warnings user subcat captive-portal
logging level warnings user subcat dot1x
logging level warnings user subcat radius
logging level warnings user subcat voice
logging level warnings user subcat vpn
logging level warnings wireless subcat all

Aruba Networks, Inc. Logging | 144
logging facility local7
logging 10.169.130.5 severity warnings
WebUI Screenshot
Figure 104 Sample logging

Aruba Networks, Inc. AirWave | 145
Chapter 24: AirWave
As the network grows beyond a single master/local cluster, it becomes more complex to configure and
troubleshoot. This complexity is increased further if more than a single cluster exists on the same
campus, because users can easily roam between clusters. To simplify the job of the network
administrator, use the AirWave system any time more than one master/local Aruba controller cluster
exists in the network. The AirWave system provides a consolidated view of all components and users
on the network in a single, flexible console. In addition to the functionality already present in the Aruba
controllers, AirWave adds network-wide configuration, advanced reporting, and trending features.
These additional features allow network administrators to interface with a single tool to plan, configure,
and troubleshoot the network.
AirWave provides centralized configuration management, and allows network administrators to track
client devices, identify rogue devices, plan new deployments, and visualize RF coverage patterns with
an intuitive and seamless user interface. For more details about AirWave and how to set it up, see the
AirWave7.2 User Guide available at the Aruba support site.
AirWave monitors Aruba devices using SNMP polling. The SNMP agent of the Aruba controllers must
be set up to respond to these SNMP polls and send SNMP traps to AirWave. AirWave also requires
Telnet or SSH credentials and the enable password to acquire license and serial information from
controllers. Configure the SNMP settings on all the controllers that must be monitored by AirWave.
CLI Configuration
!
snmp-server community public
snmp-server enable trap
snmp-server host 10.169.130.2 version 2c public udp-port 162
!
N O T E
The community string on the Aruba controllers must match that on AirWave.

Aruba Networks, Inc. AirWave | 146
WebUI Screenshot
Figure 105 Sample SNMP configuration

Aruba Networks, Inc. Amigopod | 147
Chapter 25: Amigopod
With visitors increasingly requiring online access to perform their work, visitor management has
become a standard requirement for most campuses. On large campuses with hundreds of visitor each
day, managing guess accounts is an unnecessary overhead for IT. To reduce the complexity and
operational cost of visitor management, use the Amigopod solution. Amigopod is a unified visitor
management solution with a fully functional RADIUS server and external captive portal support. The
Amigopod solution provides the most intuitive and flexible way to manage external visitors to an Aruba
wireless network. Amigopod directly links the guest accounts to security policies configured on the
Aruba controller. Amigopod ensures that network administrators control the underlying security policy
related to guest network access, but nontechnical staff can easily and securely manage the day-to-day
administration of guest accounts. If required, Amigopod can also be configured to provide self-
registration for guests and employee mobile devices. Amigopod also offers fully customizable captive
portal pages and powerful logging and reporting capabilities. For more information on the special
features and deployment scenarios of Amigopod, see the Amigopod deployment guide available at
Amigopod support site.
Figure 106 Default Amigopod login page (customizable)

Aruba Networks, Inc. Amigopod | 148

Aruba Networks, Inc. Link Aggregation | 149
Appendix A: Link Aggregation
Link aggregation bonds multiple parallel links between two network interfaces to form a single link.
Link aggregation is a simple and cost-effective way to increase bandwidth and reliability. The Aruba
Networks implementation of the Link Aggregation Control Protocol (LACP) is based on the standards
specified in IEEE 802.3ad. The implementation of LACP automates the configuration, reconfiguration,
and maintenance of aggregated links between devices. Two devices configured with LACP exchange
LACPDUs to form a link aggregation group (LAG). The load is maintained and readjusted
automatically if any link in the LAG fails or recovers.
Configuring LACP
The following examples show the configuration of LACP between an Aruba controller and other vendor
switches.
Aruba Controller
!
interface port-channel 1
trusted
trusted vlan 1-4094
switchport mode trunk
!
interface gigabitethernet 0/10
description "XG0/10"
trusted
trusted vlan 1-4094
lacp group 1 mode active
!
interface gigabitethernet 0/11
description "XG0/11"
trusted
trusted vlan 1-4094
lacp group 1 mode active
!
N O T E
Make sure that the port channel is configured as trusted.

Useful Aruba LACP Troubleshooting Commands
 Using “counters” shows the LACP received (Rx) traffic, transmitting (Tx) traffic, and data units
(DU) received and transmitted by the port.
(LC1-Sunnyvale-6000) # show lacp <group ID> counters
LACP Counter Table
------------------
Port LACPDUTx LACPDURx MrkrTx MrkrRx MrkrRspTx MrkrRspRx ErrPktRx
---- -------- -------- ------ ------ --------- --------- --------
XG 0/10 187800 203257 0 0 0 0 0
XG 0/11 187799 203244 0 0 0 0 0
 Using “internal” shows the status of the ports in a LAG. (See the last column.)
(LC1-Sunnyvale-6000) #show lacp 1 internal
Flags: S - Device is requesting slow LACPDUs
F - Device is requesting fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
LACP Internal Table
-------------------
Port Flags Pri AdminKey OperKey State Num Status
---- ----- --- -------- ------- ----- --- ------
XG 0/10 SA 255 0x2 0x2 0x3d 0xb up
XG 0/11 SA 255 0x2 0x2 0x3d 0xc up
 Using “neighbor” shows the mode and LACP parameters of the neighbors.
(LC1-Sunnyvale-6000) #show lacp 1 neighbor
Flags: S - Device is requesting slow LACPDUs
F - Device is requesting fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
LACP Neighbor Table
-------------------
Port Flags Pri OperKey State Num Dev Id
---- ----- --- ------- ----- --- ------
XG 0/10 SA 32768 0x1 0x3d 0x11e C8:4C:75:FB:E0:00
XG 0/11 SA 32768 0x1 0x3d 0x11f C8:4C:75:FB:E0:00

Cisco®
!
interface Port-channel1
switchport trunk encapsulation dot1q
!
interface TenGigabitEthernet0/1
channel-group 1 mode active
!
interface TenGigabitEthernet0/2
channel-group 1 mode active
!
JuniperTM
[edit interfaces]
ge-0/0/5 {
ether-options {
802.3ad ae0;
}
}
ge-0/0/6 {
ether-options {
802.3ad ae0;
}
}
......
ae0 {
aggregated-ether-options {
minimum-links 1;
lacp {
active;
periodic slow;
}
}
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members [ 21 22 24 25 30 31 32 33 34 ];
}
native-vlan-id 10;
}
}
}

HP®
Dynamic LACP
Syntax LACP config #
interface <ID>
lacp Active
Sample#
interface 1
lacp Active
exit
interface 2
lacp Active
exit
Sample VLAN tagging#
interface vlan 145
tagged 1-2
interface vlan 150
tagged 1-2
Static LACP
Syntax LACP config #
trunk <port-list> trk<1|2|3|….> lacp
Sample#
trunk 1-2 Trk3 lacp
Sample VLAN tagging#
interface vlan 145
tagged trk3
interface vlan 150
tagged trk3
N O T E
For both dynamic and static LACP, tag all the VLANs that have to be allowed
through this trunk.

Alcatel-Lucent®
Syntax LACP config#
lacp linkagg <number> size <number of links for aggregation 2,4 or 8> admin state enable
lacp linkagg <number> actor admin key < 0–65535>
lacp agg 1/8 actor admin key < 0–65535>
lacp agg 1/9 actor admin key < 0–65535>
Syntax VLAN tagging#
vlan <ID> 802.1q <linkagg number>
Sample#
lacp linkagg 2 size 2 admin state enable
lacp linkagg 2 actor admin key 123
lacp agg 1/1 actor admin key 123
lacp agg 1/2 actor admin key 123
vlan 145 802.1q 2
vlan 150 802.1q 2
N O T E
For LACP, tag all the VLANs that have to be allowed through this link
aggregation.

Aruba Networks, Inc. Aruba Contact Information | 155
Appendix B: Aruba Contact Information
Contacting Aruba Networks
Web Site Support
Main Site http://www.arubanetworks.com
Support Site https://support.arubanetworks.com
Software Licensing Site https://licensing.arubanetworks.com/login.php
Wireless Security Incident
Response Team (WSIRT)
http://www.arubanetworks.com/support/wsirt.php
Support Emails
Americas and APAC support@arubanetworks.com
EMEA emea_support@arubanetworks.com
WSIRT Email
Please email details of any security
problem found in an Aruba product.
wsirt@arubanetworks.com
Validated Reference Design Contact and User Forum
Validated Reference Designs http://www.arubanetworks.com/vrd
VRD Contact Email referencedesign@arubanetworks.com
AirHeads Online User Forum http://airheads.arubanetworks.com
Telephone Support
Aruba Corporate +1 (408) 227-4500
FAX +1 (408) 227-4550
Support
 United States +1-800-WI-FI-LAN (800-943-4526)
 Universal Free Phone Service Numbers (UIFN):
 Australia Reach: 11 800 494 34526
 United States 1 800 9434526
1 650 3856589
 Canada 1 800 9434526
1 650 3856589
 United Kingdom BT: 0 825 494 34526
MCL: 0 825 494 34526

Aruba Networks, Inc. Aruba Contact Information | 156
 Universal Free Phone Service Numbers (UIFN):
 Japan IDC: 10 810 494 34526 * Select fixed phones
IDC: 0061 010 812 494 34526 * Any fixed, mobile & payphone
KDD: 10 813 494 34526 * Select fixed phones
JT: 10 815 494 34526 * Select fixed phones
JT: 0041 010 816 494 34526 * Any fixed, mobile & payphone
 Korea DACOM: 2 819 494 34526
KT: 1 820 494 34526
ONSE: 8 821 494 34526
 Singapore Singapore Telecom: 1 822 494 34526
 Taiwan (U) CHT-I: 0 824 494 34526
 Belgium Belgacom: 0 827 494 34526
 Israel Bezeq: 14 807 494 34526
Barack ITC: 13 808 494 34526
 Ireland EIRCOM: 0 806 494 34526
 Hong Kong HKTI: 1 805 494 34526
 Germany Deutsche Telkom: 0 804 494 34526
 France France Telecom: 0 803 494 34526
 China (P) China Telecom South: 0 801 494 34526
China Netcom Group: 0 802 494 34526
 Saudi Arabia 800 8445708
 UAE 800 04416077
 Egypt 2510-0200 8885177267 * within Cairo
02-2510-0200 8885177267 * outside Cairo
 India 91 044 66768150
Telephone Support

Campus Network Design version 8

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