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Chapter 36: VLAN Commands
Configuring VLAN Translation
show
l2protocol-tunnel
C
VLAN T
ONFIGURING
switchport vlan-
translation
E
XAMPLE
Console(config)#dot1q-tunnel system-tunnel-control
Console(config)#interface ethernet 1/1
Console(config-if)#switchport dot1q-tunnel mode access
Console(config-if)#switchport l2protocol-tunnel spanning-tree
Console(config-if)#
This command shows settings for Layer 2 Protocol Tunneling (L2PT).
C
M
OMMAND
ODE
Privileged Exec
E
XAMPLE
Console#show l2protocol-tunnel
Layer 2 Protocol Tunnel
Tunnel MAC Address : 01-12-CF-00-00-00
Interface
Protocol
----------------------------------------------------------
Eth 1/ 1
Spanning Tree
Console#
RANSLATION
QinQ tunneling uses double tagging to preserve the customer's VLAN tags
on traffic crossing the service provider's network. However, if any switch in
the path crossing the service provider's network does not support this
feature, then the switches directly connected to that device can be
configured to swap the customer's VLAN ID with the service provider's
VLAN ID for upstream traffic, or the service provider's VLAN ID with the
customer's VLAN ID for downstream traffic.
This section describes commands used to configure VLAN translation.
Table 36-8: VLAN Translation Commands
Command
Function
switchport vlan-
Maps VLAN IDs between the customer and service
translation
provider
show vlan-translation
Displays the configuration settings for VLAN
translation
This command maps VLAN IDs between the customer and service provider.
S
YNTAX
switchport vlan-translation original-vlan new-vlan
– 1104 –
Mode
IC
PE
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