nanog mailing list archives
RE: PSINet/Cogent Latency
From: Alex Rubenstein <alex () nac net>
Date: Mon, 22 Jul 2002 22:01:36 -0400 (Eastern Daylight Time)
On Mon, 22 Jul 2002, Phil Rosenthal wrote:
I call any upstream link 'over capacity' if either: 1) There is less than 50mb/s unused
That must work well for T1's and DS3's.
2) The circuit is more than 50% in use
I call it 'over capacity' too, but that doesn't mean all the ducks are in a row to get both sides to realise an upgrade is needed, and even if they do realise it, to actually get it done. I am sure 2238092 people on this list can complain of the same problem. So, what do you do? You monitor it's usage, making adjustments to make sure it doesn't get clobbered. You can easily run DS-3s at 35 to 40 mbit/sec, with little to none increase in latency from the norm. Many people do this as well, even up to OC12 or higher levels all the time.
I guess by my definition a DS3 is always 'over capacity'
Which must work very well for those DS3's doing 10 to 20 mb/s. Do you upgrade those to OC3 or beyond? -- Alex Rubenstein, AR97, K2AHR, alex () nac net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
Current thread:
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits, (continued)
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits Scott Francis (Jul 22)
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits Scott Weeks (Jul 22)
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits Michael Painter (Jul 22)
- PSINet/Cogent Latency Derek Samford (Jul 22)
- Re: PSINet/Cogent Latency Alex Rubenstein (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- Re: PSINet/Cogent Latency G. Scott Granados (Jul 22)
- Re: PSINet/Cogent Latency Brian (Jul 22)
- Re: PSINet/Cogent Latency Alex Rubenstein (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- RE: PSINet/Cogent Latency Alex Rubenstein (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- RE: PSINet/Cogent Latency Brian Wallingford (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- RE: PSINet/Cogent Latency Brian Wallingford (Jul 22)
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits Scott Weeks (Jul 22)
- Re: OT: If you thought Y2K was bad, wait until cyber-security hits Scott Francis (Jul 22)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 22)
- RE: PSINet/Cogent Latency Randy Bush (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- RE: PSINet/Cogent Latency william (Jul 22)