From: Tim Fletcher (groupstudy@fletchmail.net)
Date: Thu Jan 22 2004 - 12:15:30 GMT-3
One minor correction here. Bc is in bits, not bps. I know it's a nit picky
detail, but it's a detail that helped me finally understand how traffic
shaping works.
-Tim Fletcher
At 03:35 PM 1/21/2004 -0500, McNeace, Roger wrote:
>You can not change the Tc value directly. You have change the Bc value to
>affect the Tc. To figure out the Bc value use the following formula.
>
>Bc=Tc*CIR
>
>Default 125 ms per Tc
>
>Bc =.125 * 128000 = 16000bps
>
>For 10ms Tc
>
>Bc = .01 * 128000 = 1280bps
>
>
>-----Original Message-----
>From: alsontra@hotmail.com [mailto:alsontra@hotmail.com]
>Sent: Wednesday, January 21, 2004 5:14 PM
>To: ccielab@groupstudy.com
>Subject: Frame-Relay Traffic-Shaping (FRTS)
>
>
>I am having some trouble working out the mathematics involved with a
>particular Frame-Relay traffic shaping exercise. If I start with (CIR) =
>128000bps and a (bc) =16000 and a (tc)=125ms and then change the (tc) value to
>10ms seconds, are the below calculations correct?
>
>
>
>CIR = 128000bps
>
>bc = 1280bps because (1/100) of 128 000 = 1280
>
>tc = 10ms because (1/100) of 1000 = 10
>
>
>
>Any help would be appreciated. Thanks in advance.
>
>
>
>Alsontra Daniels
>
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