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Re: Rate Limit Bc question posted 07/07/2007
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Kim,CCIE19999

The solution used policing to limit the ICMP traffic.
All policing tools use bytes when comfiguring Bc/Be

If the requirement included the use of a shaping tool, then Bc/Be would have
been specified in bits, which is the norm for all shaping tools.

HTH

Ben



On 7/6/07, CCIE 19999 <ccie@xxxxxxxxxxxxxx> wrote:
>
> Kim,
>
> This was one of the questions I have asked few weeks ago in the group
> study.
> If you hit ? for help, you will see the BC values is not in bits per
> second.
> This is one of the areas where Cisco is not consistent. It uses, bit/sec,
> bytes/sec, Kbps etc. for different commands.
>
> You can make sure, what unit of value the command really takes, I always
> hit
> ? and apply this one accordingly.
>
> HTH,
> Shne
>
>
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
> Kim
> Sent: Wednesday, 4 July 2007 6:50 AM
> To: Cisco certification
> Subject: Rate Limit Bc question
>
> The task states:
> In order to alleviate congestion configure R1 so that it does not send
> more
> than 128Kbps of ICMP traffic out this interface.  Allow for a burst of
> 1/4th
> of this rate.
>
> The answer uses NBAR to match ICMP and uses policy-map to police cir
> 128000
> bc 4000.
>
> Why bc is 4000?  I thought 1/4th of this rate is 32000?
>
> Thanks.
>
> --
> http://www.isolvesystems.com
>
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