Multi-Instance Msdp - HP A8800 Configuration Manual

The work process of Anycast RP is as follows:
1. The multicast source registers with the nearest RP. In this example, Source registers with RP 1, with
its multicast data encapsulated in the register message. When the register message arrives to RP
1, RP 1 de-encapsulates the message.
2. Receivers send join messages to the nearest RP to join in the RPT rooted as this RP. In this example,
Receiver joins the RPT rooted at RP 2.
3. RPs share the registered multicast information by means of SA messages. In this example, RP 1
creates an SA message and sends it to RP 2, with the multicast data from Source encapsulated in
the SA message. When the SA message reaches RP 2, RP 2 de-encapsulates the message.
4. Receivers receive the multicast data along the RPT and directly join the SPT rooted at the multicast
source. In this example, RP 2 forwards the multicast data down the RPT. When Receiver receives
the multicast data from Source, it directly joins the SPT rooted at Source.
IMPORTANT:
• Be sure to configure a 32-bit subnet mask (255.255.255.255) for the Anycast RP address, namely
configure the Anycast RP address into a host address.
An MSDP peer address must be different from the Anycast RP address.
•

Multi-instance MSDP

MSDP peering relationship can be built between multicast-enabled interfaces that belong to the same
instance. Through exchanges of SA messages between MSDP peers, the MSDP mechanism makes VPN
multicast transmission between different PIM-SM domains possible.
A multicast router running multiple MSDP instances maintains an independent set of MSDP mechanism
for each instance it supports, including SA cache, peering connection, timers, sending cache, and cache
for exchanging information with PIM, while one instance is isolated from another; therefore,
interoperability between MSDP and PIM-SM is available only within the same instance.
Protocols and standards
• RFC 3618, Multicast Source Discovery Protocol (MSDP)
RFC 3446, Anycast Rendezvous Point (RP) mechanism using Protocol Independent Multicast (PIM)
•
and Multicast Source Discovery Protocol (MSDP)
MSDP configuration task list
Task
Configuring MSDP basic functions
Configuring an MSDP peer
connection
Enabling MSDP
Creating an MSDP peer connection
Configuring a static RPF peer
Configuring MSDP peer description
Configuring an MSDP mesh group
Configuring MSDP peer connection control
192
Remarks
Required.
Required.
Optional.
Optional.
Optional.
Optional.