The problem was all the HUBS were actually dual speed and were behaving like 
a switch. And so only multicast and broadcast traffic was sent to all the 
ports. Somehow I did not expect these cheap hubs to be doing MAC filtering 
:(
Sorry for bothering.

- atul



>From: "regexp ." <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>CC: [EMAIL PROTECTED]
>Subject: Re: [tcpdump-workers] Re: Is PIMsmV2 support broken?
>Date: Wed, 20 Dec 2000 21:28:03 -0800
>
>This to correct my earlier response, I was fooled by packets originating or
>leaving same box.
>
>It does not see ping packets. no unicast packets at all.
>
>None of the interfaces capture unicast packets.
>
>
>- atul
>
>>From: Bill Fenner <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>CC: [EMAIL PROTECTED]
>>Subject: Re: [tcpdump-workers] Re: Is PIMsmV2 support broken?
>>Date: Wed, 20 Dec 2000 18:57:52 -0800
>>
>>
>>All of the packets you mention are multicasted; Register messages
>>are unicasted.  Can you see e.g. a ping from S to R3?
>>
>>   Bill
>
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