From: Jansen (jysh@xxxxxxxxxxxxxx)
Date: Sat Oct 28 2000 - 00:52:19 GMT-3
hi,everybody:
Can anybody explain these for me?
When hosts join a multicast group, the directly connected routers send PIM join
messages to the RP.
The RP keeps track of multicast groups. Hosts that send multicast packets are r
egistered with the
RP by that host's first-hop router.The RP then sends joins toward the source(Qu
estion 1: what does
the source mean? mulitcast sender or receiver? ). At this point, packets are f
orwarded on
shared distribution tree. If the multicast traffic from a specific source is su
fficient,
(Question 2: what does the "specific source" mean? sender of receiver?) the rec
iver's first-hop router
may send joins toward the source to build a souce-based distribution tree.
Question 3: If all these sources are refer to the sender, then how does the rec
iver know the multicast
traffic from a specific source is sufficient?
Thanks
Best Regards
Jansen
00-10-28
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