CLI

Showing Interfaces

Using the command show ip interfaces brief we get

Router

Interfaces have the shutdown command applied by default, meaning they will be in administratively down/down state by default.

Switch

Interfaces do NOT have the shutdown command applied by default, meaning they will be in the up/up state if connected to another device or in the down/down state if not connected

Interfaces Status

For security reasons, all unused interfaces should be disabled.

For this reason, we can configure a range of interfaces instead of one by one.