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Configuration Guide - VPN 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Configuration Guide - VPN
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Configuring Inter-AS Carrier's Carrier in an Independent Labeled Address Family (Solution 1)

Configuring Inter-AS Carrier's Carrier in an Independent Labeled Address Family (Solution 1)

In the networking of carrier's carrier, a user of the carrier providing BGP/MPLS IP VPN services is also a carrier that provides BGP/MPLS IP VPN services.This section describes how to use a separate labeled address family (BGP-labeled address family or BGP-labeled-VPN instance IPv4 address family) to configure inter-AS BGP LSPs. This configuration implements the carrier's carrier function.

Usage Scenario

If the BGP/MPLS IP VPN users are also service providers, who provide BGP/MPLS IP VPN services to their customers, you can use the carrier's carrier configuration.

Two solutions can be adopted to realize carrier's carrier.

  • Solution 1: Establish the IBGP peer relationship between the CE of the Level 1 carrier and the PE of the Level 2 carrier. In this manner, a complete tunnel of public network can be established between PEs of the Level 2 carriers.
  • Solution 2: The IBGP peer relationship between the CE of the Level 1 carrier and the PE of the Level 2 carrier is not needed. After learning the labeled BGP routes of the public network from the Level 1 carrier, the Level 2 carrier can import these BGP routes to IGP to trigger LDP to distribute labels for these routes. In this manner, a complete LDP LSP can be established between PEs of the Level 2 carriers.

Solution 1 is described in detail here. In this solution, a BGP peer relationship is established in the BGP-labeled address family or BGP-labeled-VPN instance IPv4 address family so that the BGP peers can advertise BGP-labeled routes to each other, allowing BGP LSPs to be set up between the BGP peers.

Pre-configuration Tasks

Before configuring carrier's carrier, complete the following tasks:

  • Configuring IGP for the Level 1 carrier's MPLS backbone network to implement the IP connectivity of the backbone network

  • Configuring the MPLS basic capability and the LDP for the Level 1 carrier's MPLS backbone network

  • Establishing the MP-IBGP connection between the Level 1 carrier PEs

  • Configuring the IGP for the Level 2 carrier's IP network or MPLS network to the IP connectivity

  • Configuring the MPLS basic capability and LDP for the Level 2 carrier network and establishing the LSP if the Level 2 carrier provides the BGP/MPLS IP VPN services

Configuration Procedures

Perform one or more of the following configurations as required.

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Updated: 2019-01-14

Document ID: EDOC1100058925

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