Configuring msdp, Msdp configuration task list – H3C Technologies H3C SecPath F1000-E User Manual

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Configuring MSDP

NOTE:

The firewall supports MSDP configuration only at the CLI.

Multicast source discovery protocol (MSDP) is an inter-domain multicast solution that addresses the
interconnection of protocol independent multicast sparse mode (PIM-SM) domains. It discovers multicast

source information in other PIM-SM domains.
In the basic PIM-SM mode, a multicast source registers only with the RP in the local PIM-SM domain, and

the multicast source information about a domain is isolated from that of another domain. As a result, the
RP obtains the source information only within the local domain and a multicast distribution tree is built

only within the local domain to deliver multicast data from a local multicast source to local receivers.

MSDP enables the RPs of different PIM-SM domains to share their multicast source information, so that the

local RP can join multicast sources in other domains and multicast data can be transmitted among
different domains.
With MSDP peer relationships established between appropriate routers in the network, the RPs of

different PIM-SM domains are interconnected with one another. These MSDP peers exchange source

active (SA) messages, so that the multicast source information is shared among these different domains.

NOTE:
•

MSDP is applicable only if the intra-domain multicast protocol is PIM-SM.

•

MSDP is meaningful only for the any-source multicast (ASM) model.

For more information about the concepts of DR, BSR, C-BSR, RP, C-RP, SPT and RPT mentioned in this

document, see "Configuring PIM."

MSDP configuration task list

Task

Remarks

Configuring basic MSDP
functions