Command syntax for Layer 2 switching
To globally disable Layer 2 switching on a Layer 3 switch, enter commands such as the following.
(config)# route-only (config)# exit device# write memory device# reload
To re-enable Layer 2 switching on a Layer 3 switch, enter the following commands.
device(config)# no route-only device(config)# exit device# write memory device# reload
To disable Layer 2 switching only on a specific interface, go to the interface configuration level for that interface, and then disable the feature. The following commands show how to disable Layer 2 switching on port 2.
device(config)# interface ethernet 2 device(config-if-e1000-2)# route-only