Re: CAR conform-action continue

From: Paul Cosgrove <paul.cosgrove_at_gmail.com>
Date: Wed, 22 Apr 2009 22:29:09 +0100

Bandwidth reserves a minimum amount during congestion, it does not limit
the interface. You could use a hierarcical MQC config though:-

policy-map CHILD
 class HTTP-TRAFFIC
    police 400000
 class FTP-TRAFFIC
    police 160000

policy-map PARENT
 class class-default
    police 496000
  service-policy CHILD

Your first example below looks ok, but the second will allow more
traffic than you intend. For example excess HTTP traffic may be matched
by the final line, potentially allowing 400k+496k (worst case).

Paul.

Joe Astorino wrote:
> Does the task specify you have to use CAR? If not I think another way would be just allocate bandwidth to the traffic it says to with the bandwidth command in MQC and police to 496k as well.
>
>
> -----Original Message-----
> From: George Roman <georgeroman_at_gmail.com>
>
> Date: Wed, 22 Apr 2009 21:38:37
> To: <ccielab_at_groupstudy.com>
> Subject: Re: CAR conform-action continue
>
>
> No One?
>
> On Wed, Apr 22, 2009 at 10:49 AM, George Roman <georgeroman_at_gmail.com>wrote:
>
>
>> Hi All,
>>
>>
>> I have the following requirement with 2 solutions in mind:
>>
>>
>> Police all traffic on the interface at 496kbps but before sending allow
>> -web traffic 400kbps (web traffic is ACL 101)
>> -ftp 160kpps (FTP traffic is ACL102)
>>
>> 1. int f0/0
>> rate-limit input 496000 62000 62000 conform-action continue exceed-action
>> drop
>> rate-limit input access-group 101 400000 50000 50000 conform-action
>> transmit exceed-action drop
>> rate-limit input access-group 102 160000 20000 20000 conform-action
>> transmit exceed-action drop
>>
>>
>> 2. interface f0/0
>> rate-limit input access-group 101 400000 50000 50000 conform-action
>> transmit exceed-action continue
>> rate-limit input access-group 102 160000 20000 20000 conform-action
>> transmit exceed-action continue
>> rate-limit input 496000 62000 62000 conform-action transmit exceed-action
>> drop
>>
>> Taken the example below and the two solutions from my understanding they
>> should provide the same result. What do you think?
>>
>>
>> Thanks a lot,
>> George
>>
>
>
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Received on Wed Apr 22 2009 - 22:29:09 ART

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