Configuring an Originating Address other than the RP Address You can allow an MSDP speaker that originates a SA message to use the IP address of the interface as the RP address in the SA message by changing the Originator ID. You might change the Originator ID in one of these cases: • If you configure a logical RP on multiple device in an MSDP mesh group. Configuring MSDP Configuring an Originating Address other than the RP Address Command or Action Purpose Step 3 ip msdp border sa-address interface-id Example:
Device(config)#ip msdp border sa-address 0/1 Configures the switch on the border between a dense-mode and sparse-mode region to send SA messages about active sources in the dense-mode region. For interface-id, specifies the interface from which the IP address is derived and used as the RP address in SA messages. The IP address of the interface is used as the Originator-ID, which is the RP field in the SA message. Step 4 ip msdp redistribute [list access-list-name] [asn aspath-access-list-number] [route-map map] Example: Device(config)#ip msdp redistribute list 100 Configures which (S,G) entries from the multicast routing table are advertised in SA messages.
For more information, see the #unique 75. _ Step 5 end Example: Device(config)#end Returns to privileged EXEC mode. Step 6 show running-config Example: Device#show running-config Verifies your entries. Step 7 copy running-config startup-config Example: Device#copy running-config startup-config (Optional) Saves your entries in the configuration file. Configuring MSDP 22