Configuring Multicast Vpn; Overview - HP MSR ASM Configuration Manual

Configuring multicast VPN

Overview

Multicast VPN is a technique that implements multicast delivery in VPNs. A VPN is comprised of multiple
sites and the public network provided by the network provider. The sites communicate through the public
network. As shown in
2, Site 4 and Site 6.
Figure 59 Typical VPN networking diagram
VPN B
Site 6
CE 6
A VPN involves the following types of devices:
Provider (P) device—Core device in the public network. A P device does not directly connect to CE
•
devices.
• Provider edge (PE) device—Edge device in the public network. A PE device directly connects to one
or more customer edge (CE) devices, and processes VPN routing.
CE device—Edge device on a customer network. A CE device can be a router, a switch, or a host,
•
that implements route distribution on the customer network.
As shown in
public network, VPN A, and VPN B. A PE multicast device at the edge of the public network supports
multiple VPN instances, and operates as multiple independent multicast devices. Each VPN forms a
plane, and all these planes are isolated from one another. For example, in
public network, VPN A, and VPN B. You can regard these instances as independent virtual devices,
which are PE 1', PE 1", and PE 1'". Each virtual device works on a plane as shown in
Figure 59, VPN A comprises Site 1, Site 3 and Site 5, and VPN B comprises Site
VPN A
Site 1
CE 1
PE 3
CE 5
VPN A
Site 5
Figure 60, the network that runs multicast VPN carries independent multicast services for the
VPN B
PE 1
CE 2
P
Public network
CE 4
222
Site 2
VPN A
Site 3
CE 3
PE 2
VPN B
Site 4
Figure 59, PE1 supports the
Figure 60.