H3C Technologies H3C S7500E Series Switches - Manual (Page 234)

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z If the originating-rp command is executed, MSDP will replace the RP address in the SA
messages with the address of the interface specified in the command.
z When an MSDP peer receives an SA message, it performs RPF check on the message. If the
MSDP peer finds that the remote RP address is the same as the local RP address, it will discard
the SA message.
Solution
1) Check that a route is available between the routers. Carry out the display ip routing-table
command to check whether the unicast route between the routers is correct.
2) Check that a unicast route is available between the two routers that will become MSDP peer to
each other.
3) Check the configuration of the originating-rp command. In the Anycast RP application
environment, be sure to use the originating-rp command to configure the RP address in the SA
messages, which must be the local interface address.
4) Verify that the C-BSR address is different from the anycast RP address.