Re: Effect of shaping with small Bc, no fragmentation, and a

From: Gregory Gombas (ggombas@gmail.com)
Date: Thu Oct 18 2007 - 17:31:00 ART

Eric,

To clarify, you mean bc of 640 right?
640bits/interval x 100 intervals = 64kbits/sec

Anyway to answer your question it has been my experience that packets
larger than bc will be dropped.

Regards,
Greg

On 10/18/07, Eric Phillips <ephillips@squick.cc> wrote:
> Hi all,
>
> I have searched through the GroupStudy archives, read through Odem's DQOS
> book, and checked out the DOC CD, but have not found a clear answer to a
> question that has been on my mind.
>
> If I enable shaping with a very small Bc, for example, a Tc of 10, and a Bc
> of 64, that should shape to 64kbit/sec, right? Now if I do not enable link
> fragmentation, and a large packet, perhaps 1400 bytes comes through, what
> will happen? It can not be sent in a single Tc, and it can not be
> fragmented because link fragmentation is disabled. Also assume that I have
> no Be, or a Be too small to allow 1400 bytes to accumulate between Bc and
> Be.
>
> This seems like an awfully simple question, but I have not found a clear
> answer anywhere.
>
> Thank you very much,
>
> Eric
>
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