Cisco IE 4000, Software Configuration Manual

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733
Configuring MSDP
Prerequisites
MSDP Benefits
MSDP has these benefits:

It breaks up the shared multicast distribution tree. You can make the shared tree local to your domain. Your local
members join the local tree, and join messages for the shared tree never need to leave your domain.

PIM sparse-mode domains can rely only on their own RPs, decreasing reliance on RPs in another domain. This
increases security because you can prevent your sources from being known outside your domain.

Domains with only receivers can receive data without globally advertising group membership.

Global source multicast routing table state is not required, saving memory.
Prerequisites

The switch is running the IP services image.

You have enabled IP multicast routing and configured PIM for the networks where you want to configure MSDP.
Guidelines and Limitations
MSDP is not fully supported in this software release because of a lack of support for Multicast Border Gateway Protocol
(MBGP), which works closely with MSDP. However, it is possible to create default peers that MSDP can operate with if
MBGP is not running.
Default Settings
MSDP is not enabled, and no default MSDP peer exists.
Configuring MSDP
This section includes the following topics:

Configuring a Default MSDP Peer, page 734 (required)

Caching Source-Active State, page 736 (optional)

Requesting Source Information from an MSDP Peer, page 738 (optional)

Controlling Source Information that Your Switch Originates, page 738 (optional)

Controlling Source Information that Your Switch Forwards, page 742 (optional)

Controlling Source Information that Your Switch Receives, page 744 (optional)

Configuring an MSDP Mesh Group, page 747 (optional)

Shutting Down an MSDP Peer, page 748 (optional)

Including a Bordering PIM Dense-Mode Region in MSDP, page 748 (optional)

Configuring an Originating Address other than the RP Address, page 749 (optional)