Msdp Configuration; Msdp Overview; Introduction To Msdp - 3Com 5500-EI PWR Install Manual

5

MSDP Configuration

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

MSDP Overview

Configuring MSDP Basic Functions
Configuring Connection Between MSDP Peers
Configuring SA Message Transmission
Displaying and Maintaining MSDP
MSDP Configuration Example
Troubleshooting MSDP Configuration
In this manual, the term "router" refers to a router in the generic sense or a Layer 3 Ethernet switch
running an IP multicast protocol.
Because Multicast Source Discovery Protocol (MSDP) does not support the XRN feature, MSDP
cannot be configured in fabric.
MSDP Overview

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.
1