•MSDP peers (inter or
intra domain)
•(TCP port 639 w/ higher
IP addr LISTENS)
•“FLOOD & join”
•SA (source active)
packets periodically sent to MSDP peers indicating:
•source address of active
streams
•group address of active
streams
•IP address of RP
originating the SA
•only originate SA’s for
your sources w/in your domain
•“flood & JOIN”
•interested parties can
send PIM JOIN’s towards source (creates inter-domain source
trees)
•