The default sampling interval.  You can change it if you use percentage
based policing 

 

police cir percent 20 bc 1 ms  be 1 ms conform action transmit exceed-action
set-dscp-transmit 0 violate-action drop

 

Regards,

 

Tyson Scott - CCIE #13513 R&S, Security, and SP

Managing Partner / Sr. Instructor - IPexpert, Inc.

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From: [email protected]
[mailto:[email protected]] On Behalf Of Kingsley
Charles
Sent: Thursday, July 29, 2010 9:01 AM
To: [email protected]
Subject: [OSL | CCIE_Security] QoS policing and Rate-limit

 

Hi all

With Policing and rate-limiting, we apply the following formula to calculate
Bc.

Policing

Tc = 0.25 secs

BC = CIR/8 * 0.25 = CIR/32

Be = Bc, if not specified

Rate-limiting

Tc = 1.5 secs

BC = CIR/8 * 1.5

BE = 2 BC

Tc is time windows, the IOS puts in the bucket.

I am wondering, how come the Tc is 0.25 secs for policing and 1.5 secs for
rate-limiting.




With regards
Kings

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