From: WorkerBee (ciscobee@gmail.com)
Date: Thu May 18 2006 - 09:50:19 ART
In a LAN, there are 2 routers running multicast.
By defination/RFC ,the lowest ip router is the IGMP Querier and
the highest ip router is the PIM Forwarder (PIM-SM/PIM-DM).
I am confused. If the IGMP Querier and PIM Forwarder are
different routers within the same LAN segment, how does the
PIM Forwarder knows there are clients on the LAN requesting for
multicast traffic
if that PIM Forwarder router is not a IGMP Querier?
I read many articles about IGMP Querier/PIM DR/Forwarder but
none really touch about the relationship between them. Or they
are actually 2 seperate protocols that greatly puzzle me.
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