Cisco Catalyst 4500 Series Software Configuration Guide

30-23
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 30 Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
Monitoring and Maintaining Tunneling Status
Monitoring and Maintaining Tunneling Status
Table 30-2 shows the commands for monitoring and maintaining 802.1Q and Layer 2 protocol tunneling.
Note With Cisco IOS Release 12.2(20)EW, the BPDU filtering configuration for both dot1q and Layer 2
protocol tunneling is no longer visible in the running configuration as spanning-tree bpdufilter enable.
The configuration is visible in the output of the show spanning tree int detail command.
Switch# show spann int f6/1 detail
Port 321 (FastEthernet6/1) of VLAN0001 is listening
Port path cost 19, Port priority 128, Port Identifier 128.321.
Designated root has priority 32768, address 0008.e341.4600
Designated bridge has priority 32768, address 0008.e341.4600
Designated port id is 128.321, designated path cost 0
Timers: message age 0, forward delay 2, hold 0
Number of transitions to forwarding state: 0
Link type is point-to-point by default
** Bpdu filter is enabled internally **
BPDU: sent 0, received 0
Table 30-2 Commands for Monitoring and Maintaining Tunneling
Command Purpose
Switch# clear l2protocol-tunnel counters
Clears the protocol counters on Layer 2 protocol tunneling ports.
Switch# show dot1q-tunnel
Displays 802.1Q tunnel ports on the switch.
Switch# show dot1q-tunnel interface
interface-id
Verifies if a specific interface is a tunnel port.
Switch# show l2protocol-tunnel
Displays information about Layer 2 protocol tunneling ports.
Switch# show errdisable recovery
Verifies if the recovery timer from a Layer 2 protocol-tunnel error disable
state is enabled.
Switch# show l2protocol-tunnel interface
interface-id
Displays information about a specific Layer 2 protocol tunneling port.
Switch# show l2protocol-tunnel summary
Displays only Layer 2 protocol summary information.
Switch# show vlan dot1q native
Displays the status of native VLAN tagging on the switch.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E