4.3.3 Checking the Configuration
Procedure
l Run the display vlan vlan-id command to check whether the interface is added to the
translated local VLAN.
l Run the display current-configuration command to display information about the VLAN
mapping of single VLAN tag on the interface.
Run the preceding command, and you can obtain the following information:
– The interface is added to the translated local VLAN.
– The information about the VLAN mapping is correct.
----End
4.4 Configuring VLAN Mapping of Double VLAN Tags
This section describes how to configure mapping of double VLAN tags.
4.4.1 Establishing the Configuration Task
Applicable Environment
When two private networks in different VLANs communicate with each other through a public
network, the user packets may carry one or two VLAN tags when arriving on the public network.
You can configure VLAN mapping of double VLAN tags on the edge device of the public
network so that the VLANs of private networks and public network can be separated. This saves
VLAN resources of the public network. Compared with VLAN mapping of single VLAN tag,
this function is more flexible and used in a wider scope.
Pre-configuration Tasks
l Before configuring double-tag VLAN mapping, configure VLANs.
Data Preparation
To configure double-tag VLAN mapping, you need the following data.
No.
Data
1 Outer VLAN ID before VLAN mapping
2 Inner VLAN ID before VLAN mapping
3 Outer VLAN ID after VLAN mapping
4 Inner VLAN ID after VLAN mapping
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 4 VLAN Mapping Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
161
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