From: Konstantin Kostenko (konstantin.kostenko@xxxxxxxxxxxxxxxx)
Date: Sat Sep 23 2000 - 22:15:37 GMT-3
Eddie Parra wrote:
>
> Can someone please explain what a multicasting "RP" is in English? Thanks!
Rendezvous point.
"In sparse mode, a router assumes that other routers do not want to
forward multicast packets for a group, unless there is an explicit
request for the traffic. When
hosts join a multicast group, the directly connected routers send PIM
Join messages toward the rendezvous point (RP). The RP keeps track of
multicast groups.
Hosts that send multicast packets are registered with the RP by that
host's first-hop router. The RP then sends Join messages toward the
source. At this point,
packets are forwarded on a shared distribution tree. If the multicast
traffic from a specific source is sufficient, the receiver's first-hop
router may send Join messages
toward the source to build a source-based distribution tree. "
more details at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/np1_c/1c
prt1/1cmulti.htm
-- Konstantin Kostenko. CCNP/CCDP. Network engineer. PLANNING TECHNOLOGIES, INC.
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