From: Elias Chari (elias.chari@gmail.com)
Date: Tue Jul 04 2006 - 08:20:35 ART
Yia sou Stavro,
Sorry to hear you have failed.
According to the DocCD in order to achieve the configured rate you need to
follow the following formulae, so I can't see how the objective can be
achieved with CAR. Perhaps someone else can help with this one.
<docCd>
"Policing Traffic with CAR
CAR embodies a rate-limiting feature for policing traffic. When policing
traffic with CAR, Cisco recommends the following values for the normal and
extended burst parameters:
normal burst = configured rate * (1 byte)/(8 bits) * 1.5 seconds
extended burst = 2 * normal burst
With the listed choices for parameters, extensive test results have shown
CAR to achieve the configured rate. If the burst values are too low, then
the achieved rate is often much lower than the configured rate. "
<docDC>
interface FastEthernet1/1
ip address 163.1.57.5 255.255.255.0
rate-limit output 256000 48000 96000 conform-action transmit exceed-action
drop
ip ospf mtu-ignore
duplex auto
speed auto
end
On 7/4/06, Stavros Filargyropoulos <f.stavros@gmail.com> wrote:
>
> Hi there, I just took my lab days ago, and I failed once again, 2nd time
> and
> counting..
> Question here,
> I need to rate limit to a maximum of 256 Kbps and normail burst to 8kbps
> using CAR
> Bits per second = 256000 and Normal burst = 1000 are correct ??
> But when I configure this I get this error
> Illegal normal burst size
> Increasing normal burst size to 1500
>
> Please help with this, it sucks
> Thanks
> *Stav
>
> *
>
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