Applicable Environment
To separate the private network from the public network and save VLAN resources, you can
configure double 802.1q tags on a QinQ interface provided by the S7700. The inner VLAN tag
of the private network is distributed for the internal network such as the intranet; the outer VLAN
tag of the public network is distributed for the external network such as the ISP's network. In
this way, a maximum of 4094 x 4094 VLAN tags are provided to enable transparent transmission
of the packets from different private network users with the same VLAN ID.
Pre-configuration Tasks
None
Data Preparation
To configure QinQ on the interface, you need the following data.
No. Data
1 Number of the QinQ interface
2 (Optional) Protocol used by the outer VLAN tag
3 Outer VLAN ID
5.3.2 Setting the Link Type of an Interface
Context
Do as follows on the S7700 to be configured with interface QinQ.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
port link-type dot1q-tunnel
The link type of the interface is set to dot1q-tunnel.
By default, the link type of an interface is hybrid.
Dot1q-tunnel interfaces do not support Layer 2 multicast.
----End
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 5 QinQ Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
191
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