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NE40E V800R010C00 Configuration Guide - MPLS 01

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Configuring Inter-AS Seamless MPLS+HVPN

Configuring Inter-AS Seamless MPLS+HVPN

In the inter-AS seamless MPLS+HVPN networking, an HVPN between each CSG and AGG is configured, and inter-AS seamless MPLS is configured for the link between each AGG and MASG. The networking integrates the seamless MPLS and HVPN advantages.

Usage Scenario

Figure 5-5 illustrates the inter-AS seamless MPLS+HVPN networking. A Cell Site Gateway (CSG) and an Aggregation (AGG) establish an HVPN connection, and the AGG and an Mobile Aggregate Service Gateway (MASG) establish a seamless MPLS LSP. The AGG hierarchically provides L3VPN access services and routing management services. Seamless MPLS+HVPN combines the advantages of both MPLS and HVPN. Seamless MPLS allows any two nodes on an inter-AS LSP to transmit services at the access, aggregation, and core layers, providing high service scalability. HVPN enables carriers to cut down network deployment costs by deploying devices with layer-specific capacities to meet service requirements.

Figure 5-5  Inter-AS seamless MPLS+HVPN networking

Pre-configuration Tasks

Before configuring inter-AS seamless MPLS+HVPN, complete the following tasks:

  • Configure IGP protocols to implement connectivity at the access, aggregation, and core layers and enable MPLS LDP or MPLS TE to implement MPLS forwarding on a public network.

  • Configure an EBGP peer relationship between each pair of an AGG ASBR and core ASBR and an IBGP peer relationship between each pair of the following nodes:

    • CSG and AGG
    • AGG and AGG ASBR
    • Core ASBR and MASG
  • Configure an HVPN between each pair of a CSG and AGG.


If MPLS TE tunnels are used across the three layers, a tunnel policy or tunnel selector must be configured. For configuration details, see VPN Tunnel Management Configuration.

Configuration Procedures

Figure 5-6  Flowchart for configuring inter-AS Seamless MPLS+HVPN
Updated: 2018-07-12

Document ID: EDOC1100028530

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