Subject: [pim] PIM assert function

From: Kumar P <[email-masked]>
Date: Sun, 3 Oct 2004 23:36:37 -0700 (PDT)

Hello All,
 
I am new to PIM, want someboby clear my following doubt.
 
It is mentioned in the PIM draft that assert condition is likely to happen in multi-access environment where in there are more than one upstream routers present and have different opinion on reaching RP or Source, hence generate Join according and end up in receiving multiple streams of same data.
 
Draft also mentions that there should only one forwarder in such environments, which is nothing but DR in this case. So DR in this case is responsible for generating Join after it receives igmp join or pim join from its downstream terminals. My doubt is when there is single DR(hence forwarder) on this multi-access media, how does the other routers send join towards RP or Source when ther are not responsible for the same.
 
When a router doesn't send Join message also doesn't forward the multicast streams. Please clarify this.
 
TIA,
Kumar

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