From: CCIE3000 (ccie3000@googlemail.com)
Date: Tue Jul 08 2008 - 06:29:55 ART
Hi Guys,
Something silly but I wonder if anyone else has noticed this and have any
idea why it is so.
Crudely cut down versions:
If I'm correct (please correct me if not). When reading about QOS with
3550/60's it mentions the token bucket. We are told that every time a frame
hits the switch a token is ADDED to the bucket and these are leaked at the
average traffic rate. If a frame will 'equate' to more tokens than can be
FITTED in the bucket the drop/mark etc actions are taken.
With QOS on the routers tokens are ADDED to the bucket at the average rate
and when packets need to be sent, the equivalent amount of tokens are
REMOVED from the bucket. If there aren't enough tokens available
dropping/marking etc takes place.
I think I'm right that both methods are doing the same thing but why the
difference in the way that they achieve their goal?
One adding as frames come in, one removing as packets are sent?
If I've got completely the wrong end of the stick...sorry about that :)
Thanks in advance,
Si
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