This section describes how to configure the routes that traverse the MPLS VPN backbone
network to be the routes of the OSPF area. After the configuration, traffic between sites of the
same VPN in the same OSPF area need not be forwarded through routes of the OSPF area.
3.10 Configuring a Multi-VPN-Instance CE
By using OSPF multi-instance on CEs, you can implement service isolation on the LAN.
3.11 Connecting VPN and the Internet
Generally, users within a VPN can communicate only with each other instead of with Internet
users, and the VPN users cannot access the Internet. If each site of the VPN needs to access the
Internet, you need to configure the interconnection between the VPN and the Internet.
3.12 Configuring VPN FRR
In the networking of CE dual-homing, you can configure VPN FRR to ensure the end-to-end
VPN service fast switchover if the PE fails.
3.13 Configuring VPN GR
In the process of master/slave control board switchover or the system upgrade, you can configure
VPN GR to ensure that VPN traffic is not interrupted on the PE, CE, or P.
3.14 Configuring Route Reflection to Optimize the VPN Backbone Layer
Using an RR can reduce the number of MP IBGP connections between PEs. This not only reduces
the burden of PEs but also facilitates network maintenance and management.
3.15 Configuring Route Reflection to Optimize the VPN Access Layer
If a PE and the connected CEs are in the same AS, you can deploy a BGP route RR to reduce
the number of IBGP connections between CEs and facilitate maintenance and management.
3.16 Maintaining BGP/MPLS IP VPN
This section describes how to maintain the BGP/MPLS IP VPN, which involves L3VPN traffic
checking, network connectivity monitoring, BGP connection resetting.
3.17 Configuration Examples
This section provides several configuration examples of VPN networking. In each configuration
example, the networking requirements, configuration roadmap, configuration notes,
configuration procedures, and configuration files are described.
Quidway S7700 Smart Routing Switch
Configuration Guide - VPN 3 BGP MPLS IP VPN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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