Operation Manual – MulticastH3C S5600 Series Ethernet Switches Chapter 5 MSDP Configuration5-135.4.1 Configuration PrerequisitesBefore you configure SA message transmission, perform the following tasks:z Configuring a unicast routing protocol.z Configuring basic IP multicast functions.z Configuring basic PIM-SM functions.z Configuring basic MSDP functions.Complete the following tasks to configure SA message transmission:Task RemarksConfiguring RP Address in SA Messages OptionalConfiguring SA Message Cache OptionalConfiguring the Transmission and Filtering of SA RequestMessages OptionalConfiguring a Rule for Filtering the Multicast Sources of SAMessages OptionalConfiguring a Rule for Filtering Received and Forwarded SAMessages Optional5.4.2 Configuring RP Address in SA MessagesMSDP peers deliver SA messages to one another. Upon receiving an SA message, arouter performs an RPF check on the message. If the router finds that the remote RPaddress is the same as the local RP address, it will discard the SA message. In anycastRP application, however, you need to configure RPs with the same IP address on twoor more routers in the same PIM-SM domain, and configure these RPs as MSDP peersto one another. Therefore, a logic RP address (namely the RP address on a logicinterface) that is different from the actual RP address must be designated for SAmessages so that the messages can pass the RPF check.Follow these steps to configure RP address in SA messages:To do... Use the command... RemarksEnter system view system-view —Enter MSDP view msdp —Configure the address ofthe specified interface asthe RP address in SAmessagesoriginating-rpinterface-typeinterface-numberRequiredBy default, the RPaddress in SA messagesis the RP addressconfigured for PIM.
