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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: FR Tidbit [was: 56k modems/frame/ptp revisited (LONG)]
Scott, I'm curious. Is your assertion that "CIR is guaranteed only under "normal" conditions" based on the Frame Relay spec or a paticular vendor(s) implementation? I ask because I have been in that very debate for some time (usually with a FR vendor justifying lousey performance). My tendancy is to take the "Comitted" in CIR literally. It's my understanding that the FR congestion management routines (at least the Stratacom one - Foresight?) will only back off bursty PVC to the point where it's <= CIR. The implication then is that you'll always get at least CIR - which makes sense since that's what you're paying for. Dan At 08:45 AM 9/1/98 -1000, scott w wrote: > > > >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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