Msdp Overview; Chapter 6 Msdp Configuration; Introduction To Msdp - H3C S7500E Series Operation Manual

Operation Manual – Multicast
H3C S7500E Series Ethernet Switches

Chapter 6 MSDP Configuration

When configuring MSDP, go to these sections for information you are interested in:

MSDP Overview

MSDP Configuration Task List
Configuring Basic Functions of MSDP
Configuring an MSDP Peer Connection
Configuring SA Messages Related Parameters
Displaying and Maintaining MSDP
MSDP Configuration Examples
Troubleshooting MSDP
Note:
The term "router" in this document refers to a router in a generic sense or a Layer 3
switch running the MSDP protocol.
6.1 MSDP Overview

6.1.1 Introduction to MSDP

Multicast source discovery protocol (MSDP) is an inter-domain multicast solution
developed to address the interconnection of protocol independent multicast sparse
mode (PIM-SM) domains. It is used to discover 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 of a domain is isolated from that
of another domain. As a result, the RP is aware of 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. If there is a
mechanism that allows RPs of different PIM-SM domains to share their multicast
source information, the local RP will be able to join multicast sources in other domains
and multicast data can be transmitted among different domains.
MSDP achieves this objective. By establishing MSDP peer relationships among RPs of
different PIM-SM domains, source active (SA) messages can be forwarded among
domains and the multicast source information can be shared.
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Chapter 6 MSDP Configuration