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Router (Router commands) working with two main ports, configuration and communication port. We manage all router setting using configuration port. Here are some useful router commands to manage router configuration.

Set Line Console Password

• router>enable

• router#configure terminal

• router(config)#line console 0

• router(config-line)#login

• router(config-line)#password submask

• router(config-line)#exit

• router(config)#exit

Remove Console password

• router>enable

• router#configure terminal

• router(config)#line console 0

• router(config-line)#no login

• router(config-line)#no password

• router(config-line)#exit

• router(config)#exit

Remove Secret Password

• router>enable

• router#configure terminal

• router(config)#no enable secret

• router(config)#exit

How to check Configuration Register Value

• router>enable

• router#show version

How to Administratively shutdown Router's Interface

• router>enable

• router#configure terminal

• router(config)#int s0/0

• router(config-if)#shutdown

To Enable Router's Serial Interface

• router#configure terminal

• router(config)#int s0/0

• router(config-if)#no shutdown

To check Serial Interface

• router>enable

• router(config)#show interfaces s0/0

To set Clock rate on Router's Serial Interface

• router>enable

• router#configure terminal

• router(config)#interface s0/0

• router(config-if)#clock rate 64000

DTE/DCE Status

• router>enable

• router#show controllers s0/0

To Save Running Configuratoin

• router#copy running-config startup-config

IOS uploading from Router to TFTP Server

• router#copy flash: tftp

Backup Startup Configuration to TFTP

• router#copy startup-config tftp

To Save Running Configuration

• router#write memory

Deletion of NVRAM Configuration

• router#write erase

To check NVRAM Configuration

• router#show staratup-config