Configuration Roadmap
The configuration roadmap is as follows:
1.
Run an IGP protocol on the backbone network so that the devices in the same AS can
communicate with each other.
2.
Configure the basic MPLS capability on the backbone network and establish dynamic LSPs
between PEs and ASBR-PEs in the same AS. If PEs and ASBR-PEs are not directly
connected, establish a remote LDP session.
3.
Establish MPLS L2VC connections between the PEs and ASBR-PEs in the same AS.
Data Preparation
To complete the configuration, you need the following data:
l
IS-IS data
l
IP addresses of the peers (addresses of loopback interfaces on the peers)
l
MPLS LSR-IDs of PEs and ASBR-PEs (addresses of the local loopback interfaces)
l
L2VC ID
Procedure
Step 1
Configure the IDs of the VLANs to which the interfaces belong according to
The configuration procedure is not mentioned.
Step 2
Configure an IGP protocol on the MPLS backbone network.
PEs and ASBR-PEs on the MPLS backbone network can communicate with each other by using
IGP.
In this example, IS-IS is used as IGP and the configuration procedure is not mentioned.
After the configuration, the IS-IS neighbor relation can be established between the ASBR-PE
and the PE in the same AS. Run the
display isis peer
command, and you can find that the neighbor
relation is Up.
Take the display on ASBR-PE1 for example.
<ASBR-PE1>
display isis peer
Peer information for ISIS(1)
----------------------------
System Id Interface Circuit Id State HoldTime Type PRI
0000.0000.0001 Vlanif20 0000000002
Up
28s L1L2 --
Total Peer(s): 1
Run the
display ip routing-table
command, and you can see that the PEs and ASBR-PEs can
learn the loopback routes of each other.
Take the display on ASBR-PE1 for example.
<ASBR-PE1>
display ip routing-table
Route Flags: R - relied, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
Destinations : 9 Routes : 9
Destination/Mask Proto Pre Cost Flags NextHop Interface
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.
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