From: Simon Tee (teetengloong@gmail.com)
Date: Thu Aug 03 2006 - 15:44:54 ART
Hi guys,
I recently reviewed the IOS command reference
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hqos_r/qos_q1h.htm#wp1080850
and found something which I need clarification. Under the rate-limit
command there's this comment:
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*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. *
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
However I cannot find any similar recommendation with the police command. Is
this recommendation specifically targeting rate-limit command? And should we
follow Cisco's recommendation in the CCIE lab?
Thank you.
Simon
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