RE: Bc and Be Calculation

From: Ozgur Guler (Garanti Teknoloji) (OzgurG@garanti.com.tr)
Date: Sun Oct 19 2003 - 05:39:35 GMT-3


you should correct the be value...

peak rate= (1+ be/bc).CIR
that makes,
be=500

Ozgur
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of k c
Sent: Sunday, October 19, 2003 10:18 AM
To: ccielab@groupstudy.com
Subject: Bc and Be Calculation

Question on R6:
- CIR for the PVC connecting to router 14 should be 12kbps
- If BECNs are received, R6 should throttle back to 50% of the CIR configured for the PVC that the BECNs were received
- The peak rate should be 33% higher than the CIR for each PVC

I don' t know how to calculate the Bc and Be based on the above info. Bc/CIR = Tc. Does it assign Tc to 1 sec such that BC=12000 bps x 1 sec 8 = 1500 Byte. For Be, in 1 sec interval, Be=12000 x 1 x 33/100 = 4000. Do I correct?

Ans:
map-class frame-relay 12kbs
 frame-relay cir 12000
 frame-relay bc 1500
 frame-relay be 4000
 frame-relay mincir 6000
 frame-relay adaptive-shaping becn

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