Cisco CLI

Using the show ip interface brief command we can view information relating to the status of each interface.

Status

Relates to the Layer 1 status.

• administratively down: Interface has been disabled with the 'shutdown' command.

This is the default status of Cisco router interfaces.

Cisco switch interfaces are not administratively down by default.

Protocol

Relates to the Layer 2 status.

Configuring IP Addresses

Steps

1. enable

2. configure terminal

3. interface <interface name>

   1. Example: interface gigabitethernet0/0

4. ip address <ip address> <net mask>

   1. Example: ip address 10.255.255.254 255.0.0.0

5. no shutdown

Showing Interfaces

Using the command show interfaces.

• Or you can specify which interface with: show interfaces <interface>

Description

Using show interfaces description

Allows us to write note for each interface that may be helpful when identifying interfaces.

Configuring Description

• enable

• configure terminal

• interface <interface name>

• description <description>