RE: MINCIR = CIR?

From: Jonathan V Hays (jhays@jtan.com)
Date: Wed Apr 16 2003 - 11:46:36 GMT-3


> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of Mike Williams
> Sent: Wednesday, April 16, 2003 8:45 AM
> To: 'Joe Chang'; 'Jeongwoo Park'; ccielab@groupstudy.com
> Subject: MINCIR = CIR? (Was: Do you agree with this equation?)
>
>
> I know this sounds silly, but what is the purpose of
> MINCIR??!?! Unless everything I've ever learned about Frame
> Relay is wrong, CIR is a COMMITTED Information Rate, i.e. the
> bandwidth that's guaranteed to you as a customer with no
> drops during congestion. So why in the world would you ever
> configure a MINCIR that's isn't exacly the same as your CIR?!?!?
>
> Any input is appreciated.
> Mike W.

Hi Mike,

These are Cisco definitions. Take the trouble to read this document:

http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_e
xample09186a00800942f8.shtml

Basic Cisco definitions are as follows:

access rate

-Cisco's definition for the physical line speed, or port speed.

frame-relay cir

-To Cisco, CIR is the average rate defined by the problem statement, in
bps.

-Cisco defines rate given to you by the telco as the "mincir", not CIR.

-Default cir is 56000 bps.

frame-relay mincir

 -The telco/ISP guaranteed rate.

 -By default, mincir is equal to half of the cir, in bps

  mincir = cir/2



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