From: Schulz, Dave (DSchulz@dpsciences.com)
Date: Sun May 07 2006 - 09:14:10 ART
Petr -
Would you mind providing an example? I am not quite following the normal
burst formulae. Is the configured rate the CIR? Thanks for your help.
dave
________________________________
From: nobody@groupstudy.com on behalf of Petr Lapukhov
Sent: Sun 5/7/2006 3:24 AM
To: george stanza
Cc: Cisco certification
Subject: Re: question on CAR rate-limit
George,
There is no "universal formula" for calculating rate-limit (CAR) bursts.
However, there are some "best-practice" recommendations rate-limit
parameters:
normal burst = configured rate * (1 byte)/(8 bits) * 1.5 second
extended burst = 2 * normal burst
They are mostly targetted to work with "adaptive" (TCP) flows.
CAR produces a sort of "RED behavior" when configured with
"extended burst". (This behavior changed with "policy" command)
HTH
Petr
2006/5/7, george stanza <cert2006@gmail.com>:
>
> hello,
>
> I am trying to understand the 'burst-normal' and 'burst-max' parameters
> in
> the CAR rate-limit. The syntax says
>
> rate-limit {input|output} [access-group [rate-limit] acl-index] bps
> burst-normal burst-max conform-action action exceed-action action
>
> now, if the max limit is 184kbps and the normal burst size is 4kbps.. How
> do
> i calculate the burst-normal and burst-max ?
>
> //G
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Thu Jun 01 2006 - 06:33:21 ART