Effect of shaping with small Bc, no fragmentation, and a large

From: Eric Phillips (ephillips@squick.cc)
Date: Thu Oct 18 2007 - 17:06:52 ART

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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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