shut down vlan and interface vlan shutdown

[carl_townshend]

hi all

on a switch, when we have a vlan, we can do a command, vlan 100, shutdown, we can also do a command, interface vlan 100, shutdown

what is the difference or is it the same ?

[Kyle McKay · Accepted solution]

Shutting down the SVI (interface vlan 100) disables the Layer 3 interface for that VLAN on the switch. This means hosts will still be able to communicate WITHIN the VLAN (Layer 2) but can not be routed off of the subnet.

Shutting down the VLAN (vlan 100) disables Layer 2 switching of that VLAN on the switch. This will effectively turn off all layer 2 switching on the VLAN (preventing all communication).