Monitoring And Maintaining Tunneling Status - Cisco Catalyst 4500 series Administration Manual

Monitoring and Maintaining Tunneling Status

Command
Step 8
Switch(config)# errdisable
recovery cause l2ptguard
Step 9
Switch(config)# l2protocol-tunnel
cos value
Step 10
Switch(config)# end
Step 11
Switch# show l2protocol
Step 12
Switch# copy running-config
startup-config
Use the no l2protocol-tunnel [cdp | stp | vtp] interface configuration command to disable protocol
tunneling for one of the Layer 2 protocols or for all three. Use the no l2protocol-tunnel
shutdown-threshold [cdp | stp | vtp] and the no l2protocol-tunnel drop-threshold [cdp | stp | vtp]
commands to return the shutdown and drop thresholds to the default settings.
This example shows how to configure Layer 2 protocol tunneling on an 802.1Q tunnel port for CDP, STP,
and VTP and how to verify the configuration:
Switch(config)# interface FastEthernet2/1
Switch(config-if)# switchport mode dot1q-tunnel
Switch(config-if)# l2protocol-tunnel cdp
Switch(config-if)# l2protocol-tunnel stp
Switch(config-if)# l2protocol-tunnel vtp
Switch(config-if)# l2protocol-tunnel shutdown-threshold 1500
Switch(config-if)# l2protocol-tunnel drop-threshold 1000
Switch(config-if)# exit
Switch(config)# l2protocol-tunnel cos 7
Switch(config)# end
Switch# show l2protocol
COS for Encapsulated Packets: 7
Port
------- -------- --------- --------- ------------- ------------- -------------
Fa2/11
Monitoring and Maintaining Tunneling Status
Table 29-2
Table 29-2 Commands for Monitoring and Maintaining Tunneling
Command
Switch# clear l2protocol-tunnel counters
Switch# show dot1q-tunnel
Switch# show dot1q-tunnel interface
interface-id
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
29-18
Chapter 29
Purpose
(Optional) Configures the recovery method from a Layer 2 maximum-rate
error so that the interface is reenabled and can try again. Errdisable recovery
is disabled by default; when enabled, the default time interval is 300
seconds.
(Optional) Configures the CoS value for all tunneled Layer 2 PDUs. The
range is 0 to 7; the default is the default CoS value for the interface. If none
is configured, the default is 5.
Returns to privileged EXEC mode.
Displays the Layer 2 tunnel ports on the switch, including the protocols
configured, the thresholds, and the counters.
(Optional) Saves your entries in the configuration file.
Protocol Shutdown Drop
Threshold Threshold Counter
cdp 1500
stp 1500
vtp 1500
shows the commands for monitoring and maintaining 802.1Q and Layer 2 protocol tunneling.
Purpose
Clears the protocol counters on Layer 2 protocol tunneling ports.
Displays 802.1Q tunnel ports on the switch.
Verifies if a specific interface is a tunnel port.
Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
Encapsulation Decapsulation Drop
Counter
1000 2288 2282
1000 116 13
1000 3 67
Counter
0
0
0
OL_28731-01