Specifications

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Cisco IOS Commands
show interfaces
This is an example of output from the show interfaces trunk command:
Switch# show interfaces trunk
Port Mode Encapsulation Status Native vlan
Fa0/4 on 802.1q trunking 1
Fa0/6 on 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/4 1-4094
Fa0/6 1-4094
Port Vlans allowed and active in management domain
Fa0/4 1-2,51-52
Fa0/6 1-2,51-52
Port Vlans in spanning tree forwarding state and not pruned
Fa0/4 1
Fa0/6 1-2,51-52
This is an example of output from the show interfaces fastethernet0/1 trunk command. It displays
trunking information for the interface.
Switch# show interfaces fastethernet0/1 trunk
Port Mode Encapsulation Status Native vlan
Fa0/1 desirable 802.1q trunking 1
Port Vlans allowed on trunk
Fa0/1 1-4094
Port Vlans allowed and active in management domain
Fa0/1 1,4,196,306
Port Vlans in spanning tree forwarding state and not pruned
Fa0/1 1,306
Related Commands Command Description
switchport access Configures a port as a static-access or dynamic-access port.
switchport protected Isolates Layer 2 unicast, multicast, and broadcast traffic from
other protected ports on the same switch.
switchport trunk pruning Configures the VLAN pruning-eligible list for ports in trunking
mode.