Pre-configuration Tasks
Before configuring a backup PW, complete the following tasks:
l Configuring an IGP on PEs and Ps in the MPLS backbone to implement IP interworking
l Enabling MPLS on PEs and Ps
l Setting up tunnels (CR-LSP, LSP) used by the master and backup PWs between PEs on
the master and backup paths
l Configuring the tunnel policy when the tunnels are CR-LSPs and not configuring the tunnel
policy when the LSP is used
l Configuring the master PW on PEs on the master path
l Configuring a PW on the PE on the backup path, without distinguishing the master and
backup PWs
l Configuring the IP addresses of the interfaces connecting the CEs to the PEs
Data Preparation
To configure a backup PW, you need the following data.
No. Data
1 Destination address and the VC ID of the backup PW
2 (Optional) Tunnel policy used by the backup PW
6.7.2 Configuring a Backup PW
The encapsulation types of master and backup PWs must be the same, but the backup VC ID
and the master VC ID cannot be the same.
Context
Do as follows on the PE to which a CE is connected through only one link:
NOTE
The types of the master and backup PWs must be consistent. That is, the encapsulation types of the master
and backup PWs must be consistent.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The AC interface view is displayed.
Step 3 (Optional) Run:
undo portswitch
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 6 PWE3 Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
565
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