BigIron RX Series Configuration Guide 62153-1001986-01Configuring Multicast Source Discovery Protocol (MSDP) 23• Configure the MSDP peersNOTEThe PIM Sparse Rendezvous Point (RP) is also an MSDP peer.Routers that run MSDP must also run BGP. Also, the source address used by the MSDP router mustbe the same source address used by BGP.Enabling MSDPNOTEYou must save the configuration and reload the software to place the change into effect.To enable MSDP, enter the following commands.BigIron RX(config)# router msdpBigIron RX(config-msdp-router)# write memorySyntax: [no] router msdpConfiguring MSDP peersTo configure an MSDP peer, enter a command such as the following at the MSDP configurationlevel.BigIron RX(config-msdp-router)# msdp-peer 205.216.162.1Syntax: [no]msdp-peer [connect-source loopback ]The parameter specifies the IP address of the neighbor.The connect-source loopback parameter specifies the loopback interface you want to useas the source for sessions with the neighbor.NOTEIt is strongly recommended that you use the connect-source loopback parameter whenissuing the msdp-peer command. If you do not use this parameter, the BigIron RX uses the subnetinterface configured on the port. Also, make sure the IP address of the connect-source loopback isthe same as the source IP address used by the MSDP router, the PIM-RP, and the BGP router.The commands in the following example add an MSDP neighbor and specify a loopback interfaceas the source interface for sessions with the neighbor. By default, the BigIron RX uses the subnetaddress configured on the physical interface where you configure the neighbor as the sourceaddress for sessions with the neighbor.BigIron RX(config)# interface loopback 1BigIron RX(config-lbif-1)# ip address 9.9.9.9/32BigIron RX(config-lbif-1)# exitBigIron RX(config)# router msdpBigIron RX(config-msdp-router)# msdp-peer 2.2.2.99 connect-source loopback 1
