Cisco WS-C3550-12G Software Configuration Manual page 671

Multilayer switch

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Configuring MSDP

Figure 25-2 Default MSDP Peer Network

Default MSDP peer

Beginning in privileged EXEC mode, follow these steps to specify a default MSDP peer:

configure terminal

ip msdp default-peer ip-address | name

[prefix-list list]

ISP A PIM domain

Default MSDP peer

Customer PIM domain

Enter global configuration mode.

Define a default peer from which to accept all MSDP SA messages.

For ip-address | name, enter the IP address or Domain Name

System (DNS) server name of the MSDP default peer.

(Optional) For prefix-list list, enter the list name that specifies the

peer to be the default peer only for the listed prefixes. You can have

multiple active default peers when you have a prefix list associated

When you enter multiple ip msdp default-peer commands with the

prefix-list keyword, you use all the default peers at the same time

for different RP prefixes. This syntax is typically used in a service

provider cloud that connects stub site clouds.

When you enter multiple ip msdp default-peer commands without

the prefix-list keyword, a single active peer accepts all SA

messages. If that peer fails, the next configured default peer accepts

all SA messages. This syntax is typically used at a stub site.

Catalyst 3550 Multilayer Switch Software Configuration Guide

Default MSDP peer

ISP C PIM domain

Configuring MSDP

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Catalyst 3550