2-594
Catalyst 3750-X and 3560-X Switch Command Reference
OL-21522-02
Chapter 2 Catalyst 3750-X and 3560-X Cisco IOS Commands
show interfaces
This is an example of output from the show interfaces switchport command for a port configured as a
private VLAN promiscuous port. The primary VLAN 20 is mapped to secondary VLANs 25, 30 and 35:
Switch# show interface gigabitethernet1/0/2 switchport
Name: Gi1/0/2
Switchport: Enabled
Administrative Mode: private-vlan promiscuous
Operational Mode: private-vlan promiscuous
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: 20 (VLAN0020) 25 (VLAN0025) 30 (VLAN0030) 35
(VLAN0035)
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan:
20 (VLAN0020) 25 (VLAN0025)
30 (VLAN0030)
35 (VLAN0035)
<output truncated>
This is an example of output from the show interfaces switchport backup command:
Switch# show interfaces switchport backup
Switch Backup Interface Pairs:
Active Interface Backup Interface State
--------------------------------------------------------------
Gi1/0/1 Gi1/0/2 Active Up/Backup Standby
Gi3/0/3 Gi4/0/5 Active Down/Backup Up
Po1 Po2 Active Standby/Backup Up
Pruning VLANs Enabled Lists the VLANs that are pruning-eligible.
Protected Displays whether or not protected port is enabled (True) or
disabled (False) on the interface.
Unknown unicast blocked
Unknown multicast blocked
Displays whether or not unknown multicast and unknown
unicast traffic is blocked on the interface.
Voice VLAN Displays the VLAN ID on which voice VLAN is enabled.
Administrative private-vlan
host-association
Displays the administrative VLAN association for
private-VLAN host ports.
Administrative private-vlan mapping Displays the administrative VLAN mapping for private-VLAN
promiscuous ports.
Operational private-vlan Displays the operational private-VLAN status.
Appliance trust Displays the class of service (CoS) setting of the data packets
of the IP phone.
Table 2-34 show interfaces switchport Field Descriptions (continued)
Field Description
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