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