Cisco Systems 3750E manual Ip msdp default-peer ip-address name, Prefix-list list, 43-5

Chapter 43 Configuring MSDP

Configuring MSDP

Figure 43-2 Default MSDP Peer Network

Router C

Default MSDP peer

ISP C PIM domain

	SA	10.1.1.1
	SA
Router A	SA		Switch B
Default MSDP peer
		Default MSDP peer
ISP A PIM domain		Customer PIM domain

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Beginning in privileged EXEC mode, follow these steps to specify a default MSDP peer. This procedure is required.

	Command	Purpose
Step 1 configure terminal		Enter global configuration mode.
Step 2 ip msdp default-peer ip-addressname		Define a default peer from which to accept all MSDP SA messages.
	[prefix-list list]	• For ip-address name, enter the IP address or Domain Name
		System (DNS) server name of the MSDP default peer.
		• (Optional) For prefix-listlist, 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
		with each.
		When you enter multiple ip msdp default-peercommands with the
		prefix-listkeyword, 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-peercommands without
		the prefix-listkeyword, 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 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02 43-5