Router Basic Commands Description

ROUTER MODES

User mode is also known as look only mode because it works only for show commands at most 80%.

In the Privilege mode, 100% show commands work and some little config commands.

In the Global mode, we work on 100% config commands.

Here are some common types of show commands.

In the user type "enable" and press enter to go to privilege mode 

Router> enable

now write these commands in the privilege mode

Router#Show interface

or
Router#Show interface serial 0

or
Router#Show interface ethernet 0

or
Router#Show version

or
Router#Show flash

or
Router#Show running-flash

or
Router#Show Startup-config

Changing the Hostname of a Router 

Router>enable

Router#configure terminal

Router(config)#Hostname Shahzeb

Shahzeb(config) #exit

As you can see in the global mode I write the command hostname and i use my name to change the name of the router.

Copying Flash into Backup of a Router

Router>enable

Router#Copy flash tftp

Copying Backup into Flash of a Router

Router>enable

Router#Copy tftp flash

How to move to a serial interface of a Router

Router>enable

Router#configure terminal

Router(config)#interface serial 0

Router(config-if)#ip address 15.0.0.1 255.0.0.0

Router(config-if)#no shutdown

Router(config-if)#exit

Router(config)#

The word "config-if" shows the mode of the interface

How to show serial interface of a Router

Router>enable

Router#show interface serial 0

Note: You will understand more about interface commands in the future posts