Re: rate-limit average bps

From: Bob Sinclair (bob@bobsinclair.net)
Date: Sat Dec 10 2005 - 13:44:17 GMT-3


Ajaz,

There is a suggested best practice, or rule of thumb, that says that with CAR,
the committed burst should be 1.5 seconds worth of traffic, and the excess
burst should be twice the committed burst. Seems like a silly task to me, but
I suppose you calculate it using the formula:

Bc = (1.5 RATE)/8

Be = (3 RATE)/8

Here is a link that might help:

http://www.cisco.com/warp/public/105/carburstvalues.pdf

Bob Sinclair
CCIE #10427, CCSI 30427
www.netmasterclass.net

  ----- Original Message -----
  From: Nawaz, Ajaz
  To: ccielab@groupstudy.com
  Sent: Saturday, December 10, 2005 11:27 AM
  Subject: rate-limit average bps

  Dear Group,

  <http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fq
o
  s_r/qrfcmd8.htm#wp1037428>

  "bps - Average rate, in bits per second (bps). The value must be in
  increments of 8 kbps."

  I want to rate-limit http traffic but only have burst-normal and burst-max
  figures stipulated. How does one come about the 'average rate (bps)'?

  Tia
  Ajaz Nawaz

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