Cisco Systems 3130 User Manual
16-13
Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
OL-13270-01
Chapter 16 Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling
Configuring Layer 2 Protocol Tunneling
Configuring Layer 2 Protocol Tunneling
Beginning in privileged EXEC mode, follow these steps to configure a port for Layer 2 protocol
tunneling:
tunneling:
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
interface interface-id
Enter interface configuration mode, and enter the interface to be configured
as a tunnel port. This should be the edge port in the service-provider
network that connects to the customer switch. Valid interfaces can be
physical interfaces and port-channel logical interfaces (port channels 1 to
48).
as a tunnel port. This should be the edge port in the service-provider
network that connects to the customer switch. Valid interfaces can be
physical interfaces and port-channel logical interfaces (port channels 1 to
48).
Step 3
switchport mode access
or
switchport mode dot1q-tunnel
or
switchport mode dot1q-tunnel
Configure the interface as an access port or an IEEE 802.1Q tunnel port.
Step 4
l2protocol-tunnel [cdp | stp | vtp]
Enable protocol tunneling for the desired protocol. If no keyword is entered,
tunneling is enabled for all three Layer 2 protocols.
tunneling is enabled for all three Layer 2 protocols.
Step 5
l2protocol-tunnel
shutdown-threshold [cdp | stp | vtp]
value
shutdown-threshold [cdp | stp | vtp]
value
(Optional) Configure the threshold for packets-per-second accepted for
encapsulation. The interface is disabled if the configured threshold is
exceeded. If no protocol option is specified, the threshold applies to each of
the tunneled Layer 2 protocol types. The range is 1 to 4096. The default is
to have no threshold configured.
encapsulation. The interface is disabled if the configured threshold is
exceeded. If no protocol option is specified, the threshold applies to each of
the tunneled Layer 2 protocol types. The range is 1 to 4096. The default is
to have no threshold configured.
Note
If you also set a drop threshold on this interface, the
shutdown-threshold value must be greater than or equal to the
drop-threshold value.
shutdown-threshold value must be greater than or equal to the
drop-threshold value.
Step 6
l2protocol-tunnel drop-threshold
[cdp | stp | vtp] value
[cdp | stp | vtp] value
(Optional) Configure the threshold for packets-per-second accepted for
encapsulation. The interface drops packets if the configured threshold is
exceeded. If no protocol option is specified, the threshold applies to each of
the tunneled Layer 2 protocol types. The range is 1 to 4096. The default is
to have no threshold configured.
encapsulation. The interface drops packets if the configured threshold is
exceeded. If no protocol option is specified, the threshold applies to each of
the tunneled Layer 2 protocol types. The range is 1 to 4096. The default is
to have no threshold configured.
If you also set a shutdown threshold on this interface, the drop-threshold
value must be less than or equal to the shutdown-threshold value.
value must be less than or equal to the shutdown-threshold value.
Step 7
exit
Return to global configuration mode.
Step 8
errdisable recovery cause l2ptguard
(Optional) Configure the recovery mechanism from a Layer 2
maximum-rate error so that the interface is re-enabled and can try again.
Errdisable recovery is disabled by default; when enabled, the default time
interval is 300 seconds.
maximum-rate error so that the interface is re-enabled and can try again.
Errdisable recovery is disabled by default; when enabled, the default time
interval is 300 seconds.
Step 9
l2protocol-tunnel cos value
(Optional) Configure 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.
range is 0 to 7; the default is the default CoS value for the interface. If none
is configured, the default is 5.
Step 10
end
Return to privileged EXEC mode.
Step 11
show l2protocol
Display the Layer 2 tunnel ports on the switch, including the protocols
configured, the thresholds, and the counters.
configured, the thresholds, and the counters.
Step 12
copy running-config startup-config
(Optional) Save your entries in the configuration file.