3com S7906E 설치 설명서

 

1-6 

A VPN uniquely corresponds to an MD and an MD serves only one VPN, which is called a one-to-one 

relationship. 

 

Figure 1-4 PIM neighboring relationships in MD-VPN 

P

PE 3

PE 2

PE 1

CE 3

CE 2

CE 1

PE-PE neighbors

PE-P neighbors

PE-CE neighbors

 

 

PIM neighboring relationships are established between two or more directly interconnected devices on 

the same subnet. As shown in 

, there are three types of PIM neighboring relationships in 

MD-VPN, as follows:  

z 

PE-P neighboring relationship: PIM neighboring relationship established between the public 

instance interface on a PE device and an interface on the P device across the link.  

z 

PE-PE neighboring relationship: PIM neighboring relationship established after a VPN instance on 

a PE device receives a PIM hello from a VPN instance on a remote PE device through an MTI.  

z 

PE-CE neighboring relationship: PIM neighboring relationship established between a 

VPN-instance-associated interface on a PE device and an interface on a peer CE device.  

The protocols/standards related to multicast VPN are as follows: 

z 

RFC 4684: Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label 

Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs) 

z 

draft-rosen-vpn-mcast-08: Multicast in MPLS/BGP IP VPNs