25-5
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Chapter25 Configuring MSDP Configuring MSDP
Figure25-2 Default MSDP Peer Network
Beginning in privileged EXEC mode, follow these steps to specify a default MSDP peer:
Si
ISP A PIM domain
ISP C PIM domain
SA
Router A Multilayer
Switch B
10.1.1.1
Default MSDP peer
Default MSDP peer
Default MSDP peer
Customer PIM domain
Router C
SA
SA
49884
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 ip msdp default-peer ip-address | name
[prefix-list list]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 list ed prefi xes. You can have
multiple active default peers when you have a prefix list associated
with each.
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 use d 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 def ault peer a ccepts
all SA messages. This syntax is typically used at a stub site.