Currently, only the E-series and F-series boards supports the port vlan-stacking untagged
command. In addition, the command cannot be used on an interface enabled with MAC address-
based VLAN.
----End
5.8.5 Checking the Configuration
Procedure
Step 1 Run the display current-configuration interface interface-type interface-number command to
display protocol type in the outer VLAN tag set on an interface.
----End
5.9 Connecting Sub-interfaces to a VLL Network
This section describes how to connect sub-interfaces of a PE to a VLL network so that CEs can
communicate with each other.
5.9.1 Establishing the Configuration Task
Applicable Environment
A CE accesses the ISP network through PEs. The user data packets sent from the CE to a PE
contain one or two tags. You need to connect the sub-interfaces on the PEs to a VLL network
to enable CEs to communicate with each other.
Pre-configuration Tasks
Before connecting sub-interfaces to a VLL network, complete the following tasks:
l Connecting network devices properly
l Configuring the VLAN of the CE and the basic Layer 2 forwarding function to ensure that
the packets sent from the CE to the PE contain one or two tags
Data Preparation
To connect sub-interfaces to a VLL network, you need the following data.
No.
Data
1 Names of the PE interfaces connected to the CEs
2 IP addresses of interfaces
3 L2VC IDs at both ends of the PW (must be the same)
4 MPLS LSR-IDs of the PE and P
5 Peer IP address of each PE
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.
205
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