| 摘要 |
Intra-domain routing information may be exchanged between multiple VPN sites on a VPN by establishing a network device as a BGP router reflector and establishing BGP peering sessions between each VPN site and the BGP router reflector. The BGP router reflector is configured to collect intra-domain routing information from customer edge network devices on the VPN sites, and exchange routing information with the other customer edge devices on the VPN. Thus, routing information may be sent from one site to all other sites on the VPN with a single BGP peering session. This reduces the number of BGP peering sessions on the network and, hence, the resources required to exchange the routing information. Additionally, the BGP router reflector can maintain a more complete view of the VPN tunnels to route traffic around inoperable or malfunctioning VPN tunnels to thereby improve resiliency of the network.
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