This command is very similar to Show vlan and typically has the all the information that you are looking for. By default, it will display the VLAN name, associated ports and the status. Besides this, this command will show what interfaces or subinterfaces are in a router or a VLAN.
The displayed output when a administrator of network issues the command for show vlan brief while troubleshooting a user support ticket is 'VLAN' assignment and membership for all ports.
The command used for troubleshooting when devices are not communicating with each other is 'show vlan'. It displays the VLAN information with the list of membership ports with unique ids. VLAN refers Virtual Local Area Network which is used in networking system for separating network frames.
So, we need to find out the ports that are problematic and ensure that they are in correct VLAN in active state. The necessity for troubleshooting occurs with the switching of networks.
