76
CONFIDENTIAL
26-Jan-04
© 2002 Procket Networks, Inc. All rights reserved.
Receiving SA Messages
•Skip RPF Check and accept SA if:
•Sending MSDP peer is default-peer
•Sending MSDP peer = Mesh-Group peer
•RPF Check the received SA message
•If the MSDP peer IS THE originating RP – then accept.
•Lookup best MBGP path to RP in SA message
•Search mbest
•If path to RP not found, RPF Check Fails; ignore SA message
•Is the sending MSDP Peer also an MBGP peer?
•Yes: Is best path to RP via this MBGP peer?
•If yes, RPF Check Succeeds; process SA message
•No: Is the first AS in the best path to RP = the first AS in the best path to MSDP peer?
•If yes, RPF Check Succeeds; process SA message
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