Example of the clear ip msdp peer Command and Verifying Statistics are ClearedR3_E600(conf)#do show ip msdp peerPeer Addr: 192.168.0.1Local Addr: 192.168.0.3(639) Connect Source: Lo 0State: Established Up/Down Time: 00:04:26Timers: KeepAlive 30 sec, Hold time 75 secSourceActive packet count (in/out): 5/0SAs learned from this peer: 0SA Filtering:Input (S,G) filter: myremotefilterOutput (S,G) filter: noneR3_E600(conf)#do clear ip msdp peer 192.168.0.1R3_E600(conf)#do show ip msdp peerPeer Addr: 192.168.0.1Local Addr: 0.0.0.0(0) Connect Source: Lo 0State: Inactive Up/Down Time: 00:00:04Timers: KeepAlive 30 sec, Hold time 75 secSourceActive packet count (in/out): 0/0SAs learned from this peer: 0SA Filtering:Input (S,G) filter: myremotefilterOutput (S,G) filter: noneDebugging MSDPTo debug MSDP, use the following command.• Display the information exchanged between peers.CONFIGURATION modedebug ip msdpExample of the debug ip msdp CommandR1_E600(conf)#do debug ip msdpAll MSDP debugging has been turned onR1_E600(conf)#03:16:08 : MSDP-0: Peer 192.168.0.3, sent Keepalive msg03:16:09 : MSDP-0: Peer 192.168.0.3, rcvd Keepalive msg03:16:27 : MSDP-0: Peer 192.168.0.3, sent Source Active msg03:16:38 : MSDP-0: Peer 192.168.0.3, sent Keepalive msg03:16:39 : MSDP-0: Peer 192.168.0.3, rcvd Keepalive msg03:17:09 : MSDP-0: Peer 192.168.0.3, sent Keepalive msg03:17:10 : MSDP-0: Peer 192.168.0.3, rcvd Keepalive msg03:17:27 : MSDP-0: Peer 192.168.0.3, sent Source Active msgInput (S,G) filter: noneOutput (S,G) filter: noneMSDP with Anycast RPAnycast RP uses MSDP with PIM-SM to allow more than one active group to use RP mapping.PIM-SM allows only active groups to use RP mapping, which has several implications:• traffic concentration: PIM-SM allows only one active group to RP mapping which means that alltraffic for the group must, at least initially, travel over the same part of the network. You can loadbalance source registration between multiple RPs by strategically mapping groups to RPs, but this508 Multicast Source Discovery Protocol (MSDP)
