nanog mailing list archives
Re: Network for Sale
From: "Steven M. Bellovin" <smb () research att com>
Date: Wed, 21 Feb 2001 15:43:18 -0500
In message <200102212028.MAA50344 () redpaul mfnx net>, Paul A Vixie writes:
Oh god, I hope not. RTT has never been an accurate predictor of end-to-end performance. (Just ask anyone who bought into ping-based global server load balancing.) ASPATH length is almost as bad (as a predictor) as RTT.well, it's the way icmp_echo is handeld in some vendor routers and sometime also the poor implementation of an IP stack on the echoing device which is a problem.no, that is not the problem. oh i admit that ping time jitter is ~random. but even if it weren't, RTT doesn't drive performance, (bw*delay)-loss does.
And how does "delay" differ from RTT, except for the obvious constant factor? --Steve Bellovin, http://www.research.att.com/~smb
Current thread:
- Re: Network for Sale, (continued)
- Re: Network for Sale Daniel L. Golding (Feb 24)
- Re: Network for Sale Omachonu Ogali (Feb 24)
- RE: Network for Sale Przemyslaw Karwasiecki (Feb 24)
- RE: Network for Sale Brandon Ross (Feb 24)
- Re: Network for Sale Eric A. Hall (Feb 24)
- Re: Network for Sale Paul A Vixie (Feb 24)
- Re: Network for Sale Philippe Strauss (Feb 24)
- Re: Network for Sale Paul A Vixie (Feb 24)
- Re: Network for Sale davids (Feb 24)