SDN Onboarding: Open vSwitch CLIs, OpenDaylight

SDN Onboarding: Spine Leaf Topology,
OVS CLIs and OpenDaylight
Telematika Open Session #10
Rabu, 11 April 2018
Lab Telematika
Sekolah Teknik Elektro dan Informatika
Institut Teknologi Bandung
Labtek 8 Lantai 4

Apa itu Software Defined
Network?
1

“
Software Defined Network is emerging architecture that is
dynamic, manageable, cost-effective, and adaptable, making it
ideal for the high-bandwidth, dynamic nature of today’s
applications.
-Open Networking
Foundation

Mengapa SDN bisa tercipta?
• Companies like IBM, Burroughs, Honeywell - they
all made a killing doing everything for the
customer in mutually-exclusive, proprietary ways.
• Today we have open source, and Linux. People
buy or build their own systems (often now
virtual) and do their own thing.

• Innovation is huge in compute.Today we have
open source, and Linux. People buy or build their
own systems (often now virtual) and do their
own thing.
• Contrast this with networking

• for many years, people running data centers
wanted solutions that just work, were plug n' go,
and they were wiling to pay for that. And
innovation in networking was slow
• Today, data centers are exploding.

• First, look at the generic architecture of a switch.
Switch consists of two main components -- the
control plane, and the forwarding plane.
• The forwarding plane is the hardware other than
CPU that makes sure packets are routed. And this
level of a switch is *fast*.

• The control plane is the component where things
are configured, routing protocols live and do
their work, and the results find their way down
into the forwarding plane tables to control how
packets are routed.

• Software defined networking (SDN) is a way to
exert control on the forwarding plane by writing
software to augment or replace portions of the
control plane on the switch. The SDN system
most associated with SDN is OpenFlow

• OpenFlow allows the control plane to be co-
located on a compute node in a data center, as
well as an agent running on the switch.
• In simple terms, the compute node half of
OpenFlow can read stats from the switch, and
change the forwarding plane in response by
sending commands to the OpenFlow agent on
the switch.

SDN Onboarding: Open vSwitch CLIs, OpenDaylight

Contoh – contoh Controller
and more…

Instalasi OpenDaylight
• Pertama, install dependency dari OpenDaylight.
Maven, Java JDK dan JRE
apt-get install maven
apt-get install default-jdk
apt-get install deafault-jre

• Download OpenDaylight.

• Setelah didownload, unzip/untar kemudian run
./bin/karaf.
wget [URL Download ODL]
unzip [Nama File ODL (ZIP)]
tar -xvzf [Nama File ODL (TAR)]
cd [Directory]
./bin/karaf

root@my-home:/home/petra# cd karaf-0.7.1
root@my-home:/home/petra/karaf-0.7.1# ./bin/karaf
Apache Karaf starting up. Press Enter to open the shell now...
100% [========================================================================]
Karaf started in 10s. Bundle stats: 375 active, 376 total
________ ________ .__ .__ .__ __
_____ ______ ____ ____ ______ _____ ___.__.| | |__| ____ | |___/ |_
/ | ____ _/ __ / | | __ < | || | | |/ ___| | __
/ | |_> > ___/| | | ` / __ ___ || |_| / /_/ > Y |
_______ / __/ ___ >___| /_______ (____ / ____||____/_____ /|___| /__|
/|__| / / / // /_____/ /
Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown OpenDaylight.
opendaylight-user@root>

Instalasi Fitur-Fitur OpenDaylight
#Mengaktifkan Apidocs dan Restconf
opendaylight-user@root> feature:install odl-restconf odl-mdsal-apidocs
#Mengaktifkan GUI
opendaylight-user@root> feature:install odl-dlux-core odl-dluxapps-nodes odl-dluxapps-topology odl-
dluxapps-yangui odl-dluxapps-yangvisualizer odl-dluxapps-yangman
#Mengaktifkan Fungsi Switch Dasar (Link Discovery, Address Tracker)
opendaylight-user@root> feature:install odl-l2switch-hosttracker odl-l2switch-addresstracker odl-
l2switch-packet Alternatif
#Apabila ingin switch memiliki fungsi seperti switch biasa
opendaylight-user@root> feature:install odl-l2switch-switch
#Melihat Seluruh Fitur dan Fitur Terinstall
opendaylight-user@root> feature:list
opendaylight-user@root> feature:list -i

GUI OpenDaylight
GUI OpenDaylight dapat diakses di [IP_Controller]:8181/index.html dengan
login: admin password: admin

Akses API OpenDaylight
API OpenDaylight dapat diakses di tab YangUI atau YangMan

Rest API dan OpenDaylight
Bagaimana Cara Mengatur Kontroller Menggunakan Rest API

Persiapan
1. Siapkan Opendaylight, Switch OpenFlow, dan
Aplikasi Komunikasi Rest Api, misal Postman
2. Koneksikan Switch dengan Opendaylight

Persiapan
1. Siapkan Opendaylight, Switch OpenFlow, dan Aplikasi Komunikasi
Rest Api, misal Postman
2. Koneksikan Switch dengan Opendaylight

Akses Opendaylight Inventory
1. Akses untuk konfigurasi
switch berada di
opendaylight-inventory.
2. Terdapat dua pilihan,
operational untuk melihat
konfigurasi, dan config
untuk mengubah
konfigurasi

Contoh GET Informasi Node Openflow:1
http://[ipcontroller]:8181/restconf/operational/opendaylight-inventory:nodes/node/openflow:1

GET Menggunakan Postman
1. Masukan Auth Username: admin Password: admin
2. Masukkan Header Accept: application/xml dan Content-Type:
application/xml

GET Menggunakan Postman
1. Kirimkan Perintah GET ke URL
http://[IP_Controller]:8181/restconf/operational/opendaylight-
inventory:nodes/node/openflow:[ID_Node]

PUT Flow Menggunakan Postman
Terlebih dahulu, siapkan Flow dalam XML yang akan dikirimkan,
dokumentasinya ada di:
https://wiki.opendaylight.org/view/Editing_OpenDaylight_OpenFlow_
Plugin:End_to_End_Flows:Example_Flows

Kemudian, edit xml tersebut dan masukkan pada tab body

Kirimkan ke URL (dengan method PUT)
http://[IP_controller]:8181/restconf/config/opendaylight-
inventory:nodes/node/openflow:[ID_Node]/table/[ID_Table]/flow/[ID
_Flow]
Pastikan bahwa Table ID dan Flow ID URL sama dengan yang ada di
XML

Apabila keluar status 200 OK atau 201 Created, maka Flow sudah
berhasil dimasukkan ke switch.
root@mininet-vm:/home/mininet# ovs-ofctl dump-flows s1
NXST_FLOW reply (xid=0x4):
cookie=0x3, duration=7.149s, table=0, n_packets=0, n_bytes=0,
idle_age=7, priority=2,dl_src=00:00:00:00:00:01 actions=drop

Openflow-Basic
◉ Basic forwarding flows

OpenFlow-Basic(2)
◉ Actions examples

Post-basic(2)
◉ Modify packet examples

OpenDaylight
root@my-home:/home/petra# cd karaf-0.7.1
root@my-home:/home/petra/karaf-0.7.1# ./bin/karaf
Apache Karaf starting up. Press Enter to open the shell now...
100% [========================================================================]
Karaf started in 10s. Bundle stats: 375 active, 376 total
________ ________ .__ .__ .__ __
_____ ______ ____ ____ ______ _____ ___.__.| | |__| ____ | |___/ |_
/ | ____ _/ __ / | | __ < | || | | |/ ___| | __
/ | |_> > ___/| | | ` / __ ___ || |_| / /_/ > Y |
_______ / __/ ___ >___| /_______ (____ / ____||____/_____ /|___| /__|
/|__| / / / // /_____/ /
Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.
Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown OpenDaylight.
opendaylight-user@root>

Huh ?
◉ leaf terdiri dari access switch yang
umumnya digunakan untuk
menghubungkan server, firewall,
load balancer, dan edge router.
◉ spine terdiri dari switch yang
difungsikan untuk routing dan
menjadi backbone dari network

Why?
◉ +Masalah pada Spanning Tree Protocol,
mengeliminasi rute yang bukan rute utama
◉ + Skalabilitas

The ideas?
◉ menentukan switch mana yang berfungsi sebagai “spine” dan
sebagai “leaf” pada jaringan.
◉ Tiap “leaf” berfungsi seperti layaknya switch/L2, dan “spine”
berfungsi seperti layaknya router/L3
◉ Secara default, akan ada 2 mekanisme pengiriman flow dari
controller, active forwarding dan reactive forwarding.
◉ Active forwarding dilakukan saat awal sebelum jaringan siap
dengan memberikan set flow pada tiap device untuk kondisi
jaringan yang telah di prediksi.

The ideas?(2)
◉ Bila ada perubahan pada jaringan, akan terjadi
perubahan flow table dengan meminta flow pada
controller dengan meneruskan paket ke
controller. Disini terjadi proses reactive
forwarding
◉ Kontroller akan merespon dengan memberikan
set flow baru ke seluruh perangkat pada jaringan

SDN Onboarding: Open vSwitch CLIs, OpenDaylight

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