[Mobopts] Re: Review of Draft draft-schmidt-mobopts-mmcastv6-ps-00.txt

Thomas Schmidt <schmidt@fhtw-berlin.de> Mon, 12 December 2005 11:21 UTC

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Date: Mon, 12 Dec 2005 12:23:30 +0100
From: Thomas Schmidt <schmidt@fhtw-berlin.de>
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To: Stig Venaas <Stig.Venaas@uninett.no>
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Cc: Matthias Waehlisch <mw@fhtw-berlin.de>, mobopts <mobopts@irtf.org>
Subject: [Mobopts] Re: Review of Draft draft-schmidt-mobopts-mmcastv6-ps-00.txt
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Stig Venaas wrote:
> 
> One thing I didn't mention though. You say that establishing the
> multicast forwarding trees may take 30s and more. I would say that
> with PIM it should be down to a couple of seconds unless there are
> broken implementations or packet loss. Note that some work is going
> on to make PIM joins/prunes reliable, which might help regarding
> loss. Even a few seconds is too long though, and in rare cases it
> might take longer. So I agree we need a solution for mobility.
> 

PIM-SM usually is much faster, provided the shared distribution tree 
routed at the RP is established, yes. For initial communication/ 
continuation it's merely given by the distance MSource to RP.

The statement was once again an attempt to remain neutral w.r.t. 
multicast routing protocols.

thomas

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