From: tycampbell@comcast.net
Date: Sat Jul 17 2004 - 19:12:51 GMT-3
bc / 8 is what I always use
ie
bc is 640
640/8 = 80
fragment 80
HTH
-------------- Original message --------------
> I have searched and looked through a number of
> documents covering frame-relay fragmentation and have
> not been able to find a good answer to this question.
> What is the correct way of calculating the # of bytes
> for fragmentation? In all the examples I have seen,
> it appears that the value is set to Bc when it is
> small and relates to voice and the value tends to be a
> fairly small number like less than half of the
> interface MTU or else 1/8th of Bc if Bc is larger than
> the interface MTU. I have found no rhyme or reason to
> this, though. Is it user preference as long as the
> number isn't smaller than the framesize of the
> "realtime" traffic you're trying to reduce latency for
> or larger than Bc?
>
> I am assuming in the real world you are really only
> going to use fragmentation when you are running
> something like voice/video across a link smaller than
> 768K. But if a question comes along dealing with
> fragmentation and the Bc value is greater than 1500,
> then what is the right way to determine the
> fragmentation byte count or what are the right
> details/requirements to pay attention to that would
> help you arrive at an acceptable number?
>
> =====
> --
> Scott Savage
>
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