![To turn off CDP for the entire router no cdp run
To turn off CDP for an interface No cdp enable
To change how often the router sends CDP cdp timer “seconds”
updates
To change how long the router will wait cdp holdtime “seconds”
before it’s removes a CDP neighber from
it’s table
Access-Lists
IP Standard Access Lists 1-99 access-list access-list-number,
Set parameters for this access list permit |deny, source, [source-mask]
test statement
Enable an interface to become part protocol access-group access-list-
of a group that uses the specified number, in | out
access list.
IP Extended Access Lists 100-199 access-list Access-list-number,
Set parameters for this access list permit |deny, protocol, source,
entry source-mask,
destination, destination-mask,
[operator
operand], [established]
Enable an interface to become part protocol access-group access-
of a group that uses the specified list-number, in | out
access list.
Assigns an alpha-numeric name ip access-list standard |
string to an access list extended name
Activates the access list on an ip access-group name | 1-199,
interface in | out
Can be used to verify whether show ip interfaces
access lists are set
Displays the contents of all access show access-lists
lists
IPX Standard Access Lists 800-899 access-list Access-list-number,
Set parameters for this access list permit | deny, source-network
entry [.source-node],
[source-node-mask], [destination-
network],
[.destination-node] [destination-
node-
mask]
Enable an interface to become part ipx access-group access-list-
of a group that uses the specified number, in | out
access list.
IPX Extended Access Lists 900-999 access-list Access-list-number,
Set parameters for this access list permit |
entry deny, protocol, source-network
[[[.source-node]source-node-mask] |
[.source-node
source-network-mask.source-node-
mask]],
[source-socket], [destination-
network],[[[.
destination-node] destination-node-
mask] | [destination-node
destination-network-
4
Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.](https://image.slidesharecdn.com/ccna-130102220544-phpapp02/85/Ccna-4-320.jpg)
![mask.destination-node-mask]],
[destination-socket], [log]
Enable an interface to become part ipx access-group access-list-
of a group that uses the specified number, in | out
access list.
IPX SAP Filter Access Lists 1000- access-list Access-list-number,
1099 permit |
Creates an entry in a SAP filter deny, network [.node], [network-
list mask
node-mask], [service-type [server-
name]]
Activates the output SAP filter on ipx output-sap-filter access-
the interface list-number
Activates the input SAP filter on ipx input-sap-filter access-
the interface list-number
Displays information about the show ipx interface
config of the interface including
SAP filter numbers.
WAN configuration
PPP Authentication
On each router defines the username username name password secret
and password to
expect from the remote router
Configure the interface for ppp encapsulation ppp
encapsulation
Configure ppp authentication type PPP authentication chap | chap pap
|pap chap | pap
Enables PAP on an interface ppp pap sent-username
(disabled by default) username password password
To use the same host name on ppp chap hostname hostname
multiple routers
Use to authenticate to an unknown ppp chap password secret
host. This password is
not used when the router
authenticates a remote device.
Displays authentication sequence as debug ppp authentication
it occurs
Configuring Frame Relay
encapsulation frame-relay
Specifies encapsulation type. [cisco | ietf]
Specifies LMI type used by the FR frame-relay lmi-type ansi |
switch. (default cisco) cisco | q933i
Inverse ARP is enabled by default. frame-relay inverse-arp
If it has been disabled use this [protocol] [dlci]
command to enable it.
Used to define the address to DLCI frame-relay map protocol protocol-
table statically. address
dlci [broadcast] [ietf | cisco ]
5
Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.](https://image.slidesharecdn.com/ccna-130102220544-phpapp02/85/Ccna-5-320.jpg)
Ccna
- 1. CCNA Command Summary Cheat Sheet Basic Router Commands To get into Privilege Mode from User enable mode To exit out of Privilege mode disable To exit the router Exit or logoff Previous Command Up arrow or Ctrl-P Next Command Down arrow or Ctrl-N Move forward one character Right arrow or Ctrl-F Move back one character Left arrow or Ctrl-B Break Key or Cancel <ctrl>“c” Auto Complete the command <tab> Setting Passwords Set Password for Console Port line console 0 login password password Set Password for Telnet line vty 0 4 login password password Set Password for Privilege (Enabled) mode enable password password Set Encrypted password for Privilege mode enable password password Router Configuration Commands To go from Privilege mode to Global configure terminal Configuration mode To copy the running-configuration to the copy run start start-up configuration 1 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.
- 2. To copy the startup-config to the running- copy start run config To copy the startup-config to a TFTP copy start tftp server To copy the running-config to a TFTP copy run tftp server Save a backup of the IOS to a TFTP server copy flash tftp Upgrade the IOS from a TFTP server copy tftp flash Tell the router which IOS in flash to boot boot system flash {filename} from Tell the Router which IOS to request from boot system tftp {filename} a TFTP server (usually a fallback option) Viewing the Router’s Information IOS Version info show version Current config stored in RAM show running-config Configuration stored in NVRAM show startup-config To see IOS info stored in flash show flash To see information on the interfaces show interfaces To see a summary of the interfaces show ip int brief To see processor utilization show processes cpu Configuring an Interface To access an interface “From Global config” interface {type} {number} example : interface Ethernet 0 To set Clock rate on a serial interface Clock rate {kbps} Example : clock rate 64000 Enable the interface no shutdown Disable the interface shutdown Assign an IP address to an Interface ip address {Ip address} {subnet mask} Example: ip address 10.1.1.1 255.255.255.0 Configuring TCP/IP To enable IP routing on a Router “From Global config” ip routing To disable IP routing on a Router “From Global config” no ip routing 2 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.
- 3. Displays values about routing timers, show ip protocols networks, and routing information. Displays contents of the routing table. show ip route Assign an IP address to an Interface ip address {Ip address} {subnet mask} Example: ip address 10.1.1.1 255.255.255.0 Manually setups up a host table mapping a ip host name “ ip” “addresss” hostname to an ip address. Displays the host table show hosts Configure RIP router rip network “network address” Configure IGRP Router rip Network “network address” Displays RIP updates debug ip rip Displays IGRP transactions debug ip igrp transactions Displays IGRP summary transactions Debug ip igrp events Displays status and global parameters show ip interfaces associated with an interface Allows remote management of a device telnet “ip address of host” Uses ICMP to verify hardware connection ping “network address” and logical address of the network layer To setup a static route ip route “network” “mask” “next hop address” IPX configuration Enable IPX on a router ipx routing To enable load balancing ipx maximum-paths “number” To assign a IPX network address to an ipx network “network number” interface To set the encapsulation type on an encap novell-ether interface encap sap encap arpa encap snap To view the IPX routing table show ipx route To view an IPX address on an interface show ipx interface To view the sap table show ipx servers To view IPX traffic statistics show ipx traffic To view the IPX rip updates debug ipx routing activity To view the SAP packets coming and debug ipx sap going Cisco Discovery Protocol See info on directly connected neighbors show cdp neighbors Add “detail” to the end for more info To see what interfaces are runnning CDP show cdp interface To specify and particular neighbor and see show cdp entry “hostname” CDP information 3 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.
- 4. To turn off CDP for the entire router no cdp run To turn off CDP for an interface No cdp enable To change how often the router sends CDP cdp timer “seconds” updates To change how long the router will wait cdp holdtime “seconds” before it’s removes a CDP neighber from it’s table Access-Lists IP Standard Access Lists 1-99 access-list access-list-number, Set parameters for this access list permit |deny, source, [source-mask] test statement Enable an interface to become part protocol access-group access-list- of a group that uses the specified number, in | out access list. IP Extended Access Lists 100-199 access-list Access-list-number, Set parameters for this access list permit |deny, protocol, source, entry source-mask, destination, destination-mask, [operator operand], [established] Enable an interface to become part protocol access-group access- of a group that uses the specified list-number, in | out access list. Assigns an alpha-numeric name ip access-list standard | string to an access list extended name Activates the access list on an ip access-group name | 1-199, interface in | out Can be used to verify whether show ip interfaces access lists are set Displays the contents of all access show access-lists lists IPX Standard Access Lists 800-899 access-list Access-list-number, Set parameters for this access list permit | deny, source-network entry [.source-node], [source-node-mask], [destination- network], [.destination-node] [destination- node- mask] Enable an interface to become part ipx access-group access-list- of a group that uses the specified number, in | out access list. IPX Extended Access Lists 900-999 access-list Access-list-number, Set parameters for this access list permit | entry deny, protocol, source-network [[[.source-node]source-node-mask] | [.source-node source-network-mask.source-node- mask]], [source-socket], [destination- network],[[[. destination-node] destination-node- mask] | [destination-node destination-network- 4 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.
- 5. mask.destination-node-mask]], [destination-socket], [log] Enable an interface to become part ipx access-group access-list- of a group that uses the specified number, in | out access list. IPX SAP Filter Access Lists 1000- access-list Access-list-number, 1099 permit | Creates an entry in a SAP filter deny, network [.node], [network- list mask node-mask], [service-type [server- name]] Activates the output SAP filter on ipx output-sap-filter access- the interface list-number Activates the input SAP filter on ipx input-sap-filter access- the interface list-number Displays information about the show ipx interface config of the interface including SAP filter numbers. WAN configuration PPP Authentication On each router defines the username username name password secret and password to expect from the remote router Configure the interface for ppp encapsulation ppp encapsulation Configure ppp authentication type PPP authentication chap | chap pap |pap chap | pap Enables PAP on an interface ppp pap sent-username (disabled by default) username password password To use the same host name on ppp chap hostname hostname multiple routers Use to authenticate to an unknown ppp chap password secret host. This password is not used when the router authenticates a remote device. Displays authentication sequence as debug ppp authentication it occurs Configuring Frame Relay encapsulation frame-relay Specifies encapsulation type. [cisco | ietf] Specifies LMI type used by the FR frame-relay lmi-type ansi | switch. (default cisco) cisco | q933i Inverse ARP is enabled by default. frame-relay inverse-arp If it has been disabled use this [protocol] [dlci] command to enable it. Used to define the address to DLCI frame-relay map protocol protocol- table statically. address dlci [broadcast] [ietf | cisco ] 5 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.
- 6. Displays the route maps (static or show frame-relay map dynamic) Displays LMI information show frame-relay lmi Selects a subinterface to configure interface serial number.subinterface-number multipoint | point-to-point Defines the local DLCI number being frame-relay interface-dlci dlci- linked to the interface mumber Misc. Commands Remove 10 minute interval router no exec-timeout or exec-timeout 0 0 waits for input Set clock clock set 20:26:00 04 July 2001 Change number of lines history will terminal history size “lines” record (max 256) Sets token ring speed to 16 Mbps ring-speed 16 Enables early token release early-token release Specifies a media independent media-type 10baseT interface physical connection set the configuration register config-register 0x2102 (where to boot from) 0 for ROM Monitor, 1 for ROM, 2 NVRAM. www.RouterPrep.com 6 Copyright © 2001 TNS Consulting Group, Inc. All rights reserved.