Interface range command

If you have multiple interfaces that need to be configured with the same settings, you can use the interface range command to specify a range of interfaces to which the subsequent commands will be applied.

For example, let’s say that interfaces Fa0/4, Fa0/5, Fa0/6, Fa0/7, and Fa0/8 need to have the same description. We don’t need to enter the subinterface mode of each interface separately to configure the description – we can use the interface range Fa0/4 – 8 command and then execute the description command:

SW1(config)#interface range Fa0/4 - 8
SW1(config-if-range)#description END_HOSTS

The description parameter will be applied to all interfaces in the specified range:

SW1#show running-config
Building configuration...
...
Current configuration : 1157 bytes
interface FastEthernet0/3
!
interface FastEthernet0/4
description END_HOSTS
!
interface FastEthernet0/5
description END_HOSTS
!
interface FastEthernet0/6
description END_HOSTS
!
interface FastEthernet0/7
description END_HOSTS
!
interface FastEthernet0/8
description END_HOSTS
!
interface FastEthernet0/9
!
....

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