Introduction To Multicast Vpn - HP A6600 Configuration Manual

Inner label—Represents an LSP between two CE devices interconnected over the backbone network.
•
It identifies the site to which the packet belongs. The PE forwards the packet to the target CE based
on the inner label.

Introduction to Multicast VPN

As shown in
instance A, and VPN instance B. A PE multicast device at the edge in the public network supports multiple
instances, equivalent to multiple independent multicast devices. Each instance corresponds to a plane,
and all these planes are isolated from one another. For example,
VPN instance A, and VPN instance B are running on PE1. You can regard these instances as independent
virtual devices, which are PE 1', PE 1", and PE 1'". Each virtual device corresponds to a plane.
Figure 60 Multicast in multiple VPN instances
VPN instance A
Public network
VPN instance B
With multicast VPN, when a multicast source in VPN A sends a multicast stream to a multicast group, of
all possible receivers on the network for that group, only those that belong to VPN A, namely, in Site 1,
Site 3 or Site 5, can receive the multicast stream. The stream is multicast in these sites and in the public
network.
The prerequisites for implementing multicast VPN are as follows:
The support for VPN instance multicast within each site
•
• The support for public network multicast
• PE devices that support multi-instance multicast as follows:
Connecting with sites and supporting VPN instance-based multicast
Connecting with the public network and supporting public network multicast
Figure 60, a network carries independent multicast services—the public network, VPN
PE 1"
MD A
Site 1
PE 3"
PE 1'
PE 3'
PE 1"' MD B
Site 2
PE 3"'
PE 2"
Site 5
P
PE 2'
PIM
PE 2"'
Site 6
213
Figure 60 shows that the public network,
Site 3
Site 4