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Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
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Configuring Inter-AS PWE3

Configuring Inter-AS PWE3

Context

Inter-AS PWE3 allows the MPLS backbone network to transmit PWE3 services over multiple ASs.

The devices support inter-AS PWE3 Option A. Option A is easy to implement; however, each ASBR must provide a dedicated interface for each inter-AS VC. The interface can be a layer 2 sub-interface, physical interface, or logical interface. If the number of inter-AS VCs is small, this solution can be used.

Pre-configuration Tasks

Before configuring inter-AS PWE3, complete the following tasks:

  • Configure an IGP protocol for the MPLS backbone network in each AS to ensure IP connectivity of the backbone network within an AS.

  • Configure basic MPLS functions on the MPLS backbone network in each AS.

  • Configure MPLS LDP and establish the LDP LSP for the MPLS backbone in each AS.

Procedure

The configurations of inter-AS PWE3 Option A are as follows:

  • Perform the operation of Configuring a Dynamic PW in each AS.
  • Configure the ASBRs. Each ASBR considers the peer ASBR as its CE.
    NOTE:

    You do not need to perform any additional configuration for inter-AS implementation on ASBRs and do not need to configure IP addresses for the directly connected interfaces between ASBRs.

The configuration details are not mentioned here.

Verifying the Configuration

  • Run the display mpls l2vc [ vc-id | interface interface-type interface-number ] command on the PE to view information about the local PW.

  • Run the display mpls l2vc remote-info [ vc-id ] command on the PE to view information about the remote PW.

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Updated: 2019-04-03

Document ID: EDOC1100075353

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