Configuring MSDP Configuring a Default MSDP Peer Command or Action Purpose 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. Step 4 ip prefix-list name [description string] | seq number {permit | deny} network length Example:
Device(config)#prefix-list site-a seq 3 permit 12 network length 128 (Optional) Creates a prefix list using the name specified in Step 2. • (Optional) For description string, enter a description of up to 80 characters to describe this prefix list. • For seq number, enter the sequence number of the entry. The range is 1 to 4294967294. • The deny keyword denies access to matching conditions. • The permit keyword permits access to matching conditions. • For network length, specify the network number and length (in bits) of the network mask that is permitted or denied. Step 5 ip msdp description {peer-name | peer-address} text Example:
Device(config)#ip msdp description peer-name site-b (Optional) Configures a description for the specified peer to make it easier to identify in a configuration or in show command output. By default, no description is associated with an MSDP peer. Step 6 end Example: Device(config)#end Returns to privileged EXEC mode. Configuring MSDP 5