Configuring Multicast Vpn; Overview - HP MSR2003 Configuration Manual

Configuring multicast VPN

Overview

Multicast VPN is a technique that implements multicast delivery in VPNs. A VPN comprises multiple sites
of the customer network and the public network provided by the network service provider. The sites
communicate through the public network.
As shown in
• VPN A comprises Site 1, Site 3, and Site 5.
VPN B comprises Site 2, Site 4, and Site 6.
•
Figure 56 Typical VPN networking diagram
VPN B
Site 6
CE 6
A VPN includes the following types of devices:
• Provider (P) device—Core device on the public network. A P device does not directly connect to CE
devices.
Provider edge (PE) device—Edge device on 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 implements route distribution on the
•
customer network. The device can be a router, a switch, or a host.
As shown in
the public network, VPN A, and VPN B. The multicast device PE supports multiple VPN instances and acts
as multiple independent multicast devices. Each VPN forms a plane, and all these planes are isolated
from each other. For example, in
Figure 56:
VPN A
Site 1
CE 1
PE 3
CE 5
VPN A
Site 5
Figure 56, the network that runs multicast VPN provides independent multicast services for
Figure
VPN B
PE 1
CE 2
P
Public network
CE 4
56, PE 1 supports the public network, VPN A, and VPN B. You
171
Site 2
VPN A
Site 3
CE 3
PE 2
VPN B
Site 4