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Bringing-up a Router Interface

Description: By default, an interface will be in shut-down state. We need to issue no shutdown command to bring-up the interface. Notice that the show interfaces command shows that the line protocol is up indicating that the interface is now active (sending and receiving packets).


1. View the information about interface serial 0

2. Bring serial 0 to no shutdown state

3. Now view the state of the interface serial 0

R1#show interfaces serial 0
R1#configure terminal
R1(config)#interface serial 0
R1(config-if)#no shutdown
R1#show interfaces serial 0

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