Cisco Router Basic Commands: Part One

User mode Commands

How to enter privileged mode from user mode:

  1. Router>enable

or

Router>en

How to log out from the user mode of the cisco router:

  1. Router>logout

Privileged mode commands

How to go back into user mode from privileged mode:

  1. Router#disable

 

How to enter Global Configuration mode from privileged mode:

  1. Router#configure terminal

or

Router#conf t

How to set time & date in cisco router:

  1. Router#clock set 18:00:00 3 Dec 2011

How to go back into the previous mode from any mode:

  1. exit (All Mode command)

How to get help for supported commands in cisco:

  1. ? (All Mode command)

Global Configuration Mode Commands

How to switch back to the privileged mode from Global Configuration mode:

  1. Router(config)#Ctrl+z

How to enter interface configuration mode from Global configuration mode:

  1. Router(config)#interface FastEthernet 0/0

or

Router(config)#int f0/0

How to enter subinterface configuration mode from Global configuration mode:

  1. Router(config)#interface f0/0.1

How to enter line configuration mode for enabling telnet in cisco router from Global configuration mode:

  1. Router(config)#line vty 0 4

How to enter routing protocol configuration mode to enable dynamic routing protocol rip

  1. Router(config)#router rip

How to configure version 2 in rip from router configuration mode:

  1. version 2

How to view recently entered commands on the router:

  1. Router#show history

How to view the terminal history size on the router:

  1. Router#show terminal

How to change terminal history size on the router:

  1. Router#terminal history size 25

 

Cause of  % Invalid input detected at ‘^’ marker: Spelling mistake, wrong command or command not inserted in the right mode. Example: enable

 

Cause of  % Ambiguous command: multiple commands begin with the string you entered & it’s not unique. Example: con

How to view routers model, IOS version, RAM Size, available interface info, NVRAM size, flash size & configuration register setting by a single command

  1. Router#show ver

How to set name in a router:

  1. Router(config)#hostname Router1

How to set a banner :

  1. Router#banner motd #

Type your desired word then end with #

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