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Re: FR Tidbit [was: 56k modems/frame/ptp revisited (LONG)]

  • From: Owen DeLong
  • Date: Wed Sep 02 03:10:42 1998

Depends on your telco.  If the system is built correctly, CIR is always
guaranteed, because the sum of all CIRs on a given physical link should
never exceed the bandwidth of the link.  However, many telcos oversell
CIR because they (and their customers) don't understand with CIR is
supposed to mean.

Owen

> 
> On Tue, 1 Sep 1998, Scott, Dan wrote:
> 
> [snip]
> > line and port, but the important parameter is the committed information rate
> > you purchase from the carrier.  Most of Sprint's frame relay business may
> [snip]
> >from 0-56kbps.  Can purchase 56kbps CIR, but it costs extra, would need
> [snip]
> 
> CIR is guaranteed only under "normal" conditions.  You won't get it under
> heavy congestion.  Find out the MIR configured for your PVC.  I don't know
> if they will tell you though...
> 
> scott
> 
> 
> 





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