1. Configure an IGP on the backbone network to implement the connectivity between ASBR-
PEs and PEs and set up tunnels between PEs.
2. Establish MP IBGP peer relationships between PEs and ASBR-PEs in the same AS.
3. Configure VSIs on PE1, ASBR-PE1, ASBR-PE2, and PE2 and bind the VSIs to related
AC interfaces.
Data Preparation
To complete the configuration, you need the following data:
l IS-IS data
l MPLS LSR IDs of PEs and ASBR-PEs (IP addresses of the loopback interfaces on peers)
l CE IDs and CE ranges
l IP addresses of interfaces connecting CEs to PEs (No IP address is required for interfaces
connecting PEs to CEs.)
Procedure
Step 1 Configure the VLAN to which each interface belongs according to Figure 7-19.
The configuration details are not mentioned here.
NOTE
Do not add the AC-side port and PW-side port of a PE to the same VLAN; otherwise, a loop may occur.
Step 2 Configure an IGP on the backbone network.
Devices on the MPLS backbone network can interwork through an IGP. IS-IS used as an IGP
in this example.
The configuration details are not mentioned here. Note that IS-IS must be enabled on Loopback1.
After the configuration, IS-IS neighbor relationships are established between ASBR-PEs and
PEs in the same AS. Run the display isis peer command, and you can view that the neighbors
are Up. Run the display ip routing-table command, and you can view that ASBRs and PEs can
learn loopback addresses from each other.
Take PE1 as an example.
<PE1> display isis peer
Peer information for ISIS(1)
----------------------------
System Id Interface Circuit Id State HoldTime Type PRI
0000.0000.0002 Vlanif20 0000000001 Up 20s L1L2 --
Total Peer(s): 1
<PE1> display ip routing-table
Route Flags: R - relied, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 10 Routes : 10
Destination/Mask Proto Pre Cost Flags NextHop Interface
1.1.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
2.2.2.2/32 ISIS 15 10 D 100.1.1.2 Vlanif20
100.1.1.0/30 Direct 0 0 D 100.1.1.1 Vlanif20
100.1.1.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 7 VPLS Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
790
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