Do the following to display detailed Layer 2 information for all switchport interfaces.
device# show interface switchport Interface name : Eth 0/1 Switchport mode : access Ingress filter : enable Acceptable frame types : all Default Vlan : 1 Active Vlans : 1 Inactive Vlans : - Interface name : Port-channel 5 Switchport mode : access Ingress filter : enable Acceptable frame types : all Default Vlan : 1 Active Vlans : 1