access-list ace 4 ingress interface GigabitEthernet 1/4 policy 3 tag tagged vid 4 frametype etype smac 00-00-00-00-00-11 exit interface GigabitEthernet 1/3 switchport trunk allowed vlan 4,5 switchport trunk vlan tag native ! interface GigabitEthernet 1/4 switchport trunk allowed vlan 4,5 switchport trunk vlan tag native exit