Re: [magma] Destination address in v2 leave message

Bharat Joshi <> Fri, 14 October 2011 04:49 UTC

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From: Bharat Joshi <>
To: Hitoshi Asaeda <>
Date: Fri, 14 Oct 2011 10:14:01 +0530
Thread-Topic: [magma] Destination address in v2 leave message
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Subject: Re: [magma] Destination address in v2 leave message
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Hi Hitoshi,

         Yes. Querier need not be a multicast data forwarder. But are you suggesting that a forwarder who is not a IGMP querier process the leave message? If yes, what action do they take?

         As per RFC 2236, non-querier should be using group specific queries to lower down the group timer instead of leave messages.


PS: Sorry for not able to reply inline.
From: Hitoshi Asaeda []
Sent: Friday, October 14, 2011 9:00 AM
To: Bharat Joshi
Subject: Re: [magma] Destination address in v2 leave message


>          Leave message is sent to ALL-Routers address because host
> does not keep track of the querier.
>          If host needs to keep track of querier, it will have to
> implement querier election algorithm and maintain a state with
> querier-timeout etc. which is unnecessary.

And also, querier is not always forwarder.

Hitoshi Asaeda

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