Cisco Catalyst 3550 Command Reference Manual page 403

Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
Voice VLAN: none (Inactive)
Appliance trust: none
Table 2-21
Field
Name
Switchport
Administrative Mode
Operational Mode
Administrative Trunking
Encapsulation
Operational Trunking Encapsulation
Negotiation of Trunking
Access Mode VLAN
Trunking Native Mode VLAN
Trunking VLANs Enabled
Trunking VLANs Active
Pruning VLANs Enabled
Protected
Unknown unicast blocked
Unknown multicast blocked
Voice VLAN
Appliance trust
This is an example of output from the show interfaces gigabitethernet0/1 trunk command. It displays
trunking information for the interface.
Switch# show interfaces gigabitethernet0/1 trunk
Port
Gi0/1
Port
Gi0/1
Port
Gi0/1
Port
Gi0/1
This is an example of output from the show interfaces transceiver properties command. If you do not
specify an interface, the output of the command shows the status on all switch ports:
Switch# show interfaces transceiver properties
OL-8566-01
show interfaces switchport Field Descriptions
Mode Encapsulation
desirable negotiate
Vlans allowed on trunk
1
Vlans allowed and active in management domain
1
Vlans in spanning tree forwarding state and not pruned
1
Description
Displays the port name.
Displays the administrative and operational status of the port.
In this display, the port is in switchport mode.
Displays the administrative and operational modes.
Displays the administrative and operational encapsulation
method and whether trunking negotiation is enabled.
Displays the VLAN ID to which the port is configured.
Lists the VLAN ID of the trunk that is in native mode. Lists the
allowed VLANs on the trunk. Lists the active VLANs on the
trunk.
Lists the VLANs that are pruning-eligible.
Displays whether or not protected port is enabled (True) or
disabled (False) on the interface.
Displays whether or not unknown multicast and unknown
unicast traffic is blocked on the interface.
Displays the VLAN ID on which voice VLAN is enabled.
Displays the class of service (CoS) setting of the data packets
of the IP phone.
Status Native vlan
not-trunking 1
Catalyst 3550 Multilayer Switch Command Reference
show interfaces
2-377