From: allboutcisco (frenzeus@streamyx.com)
Date: Mon Jun 26 2006 - 14:13:19 ART
Hi Petr,
Thanks for the reply. What do u mean when u say for CAR ""exceed" action is
somewhat "random", to simulate RED behavior, and depends on Be-Bc
"margin"."
Thanks.
K
----- Original Message -----
From: "Petr Lapukhov" <petr@internetworkexpert.com>
To: "allboutcisco" <frenzeus@streamyx.com>
Cc: "Cisco certification" <ccielab@groupstudy.com>
Sent: Monday, June 26, 2006 7:43 PM
Subject: Re: Policing - what happens to violate packets?
> Hmm, since no *violate* action has been defined, Be value is NOT used
> actually. All your traffic that exceeds Bc falls under exceed action.
>
> This behavior is unlike CAR, where you "exceed" action is somewhat
> "random", to simulate RED behavior, and depends on Be-Bc "margin".
>
> HTH
>
> --
> Petr Lapukhov, CCIE #16379
> petr@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
> 2006/6/26, allboutcisco <frenzeus@streamyx.com>:
>>
>> Hi Group,
>>
>> Looking at the config below:
>>
>> Rack1R2#sh run | b policy-map
>> policy-map QOS_IN
>> class UDP
>> police cir 128000 bc 2000 be 2000
>> conform-action transmit
>> exceed-action set-prec-transmit 0
>> class TCP
>> police cir 256000 bc 4000 be 8000
>> conform-action transmit
>> exceed-action set-prec-transmit 0
>>
>> Taking class UDP as an example, policing rate for UDP is 128000bps, with
>> a
>> Bc bucket depth of 2000 bytes & a Be bucket depth of 2000 bytes as well.
>> A
>> bunch of packets arrive, assuming Bc bucket tokens are all used up to
>> transmit & excess packets used up all of Be bucket tokens as well where
>> the
>> excess action is to set prec to 0 then transmit. Now assuming that there
>> are
>> still packets & since no action has been defined for violate - what
>> happens
>> to those packets?
>>
>> Appreciate if someone could advise on this?
>>
>> Thanks.
>>
>> Cheers,
>> K
>>
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