From: Venkataramanaiah.R (vramanaiah@gmail.com)
Date: Thu Nov 24 2005 - 17:40:32 GMT-3
Hi Daniel, I would configure it in cbwfq policing as bc=12000 and be=12000...
The bc and be values will not change in cbwfq(of course you specify in
bits), the change is only in the interpretation.
with CAR, you see the Be value as the sum of confirm burst and excess burst
and with CBWFQ configuration, you see them as independent values.
Chris, could you please confirm my understanding here..?
Thankyou
-Venkat
On 11/22/05, Daniel Berlinski <Daniel.Berlinski@telecom.co.nz> wrote:
> Hi there
>
> I'm trying to work out how the burst size calculations differ from CAR comparing to Class-based policing.
> If I'm given a question to configure class-based policing based on an implemented CAR configuration what would be the recommended approach?
>
> Please correct me if I'm wrong but if CAR relates to a single bucket algorithm where normal burst + burst exceeded figures are determining the depth of the token bucket, a direct translation to class based policing would become a single rate two colour (1bucket) ?
>
> The following output from a CAR config would translate to class-based policing with a bc value of 4500 bytes and be value of 0 bytes?
>
> FastEthernet0/0
> Input
> matches: all traffic
> params: 80000 bps, 1500 limit, 3000 extended limit
> conformed 0 packets, 0 bytes; action: transmit
> exceeded 0 packets, 0 bytes; action: drop
> last packet: 22838199ms ago, current burst: 0 bytes
> last cleared 00:00:51 ago, conformed 0 bps, exceeded 0 bps
>
> Thanks for your help
> DB
>
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