Do the following to display the running configuration information for the Layer 2 properties for a specific interface.
device# show running-config interface ethernet 0/1 switchport interface interface Eth 0/1 switchport switchport mode trunk switchport trunk allowed vlan add 5-10 switchport trunk tag native-vlan
This example displays the running configuration information for a port-channel interface.
device# show running-config interface port-channel 5 switchport interface Port-channel 5 switchport switchport mode access switchport access vlan 1