nanog mailing list archives
Re: IGP metrics on WAN links
From: Jennifer Rexford <jrex () research att com>
Date: Wed, 24 Jul 2002 15:09:02 -0400 (EDT)
Just curious as to what people are using for metrics in their IGP and what their reasons are; bandwidth? geographical distance? latency?
We have a survey paper on techniques for setting IGP weights http://www.research.att.com/~jrex/papers/ieeecomm02.ps http://www.research.att.com/~jrex/papers/ieeecomm02.pdf and a longer version http://www.research.att.com/~jrex/papers/ieeecomm02.long.ps http://www.research.att.com/~jrex/papers/ieeecomm02.long.pdf that might be of interest. We discuss how to tune the IGP weights in a systematic, automated fashion based on measurement data (of topology and traffic) and an optimization algorithm, and show that good weights settings allow IGPs like OSPF and IS-IS to perform almost as well as optimal routing schemes that have complete flexibility in selecting paths for the traffic. -- Jen
Current thread:
- IGP metrics on WAN links Tom Holbrook (Jul 19)
- Re: IGP metrics on WAN links Sush Bhattarai (Jul 19)
- Re: IGP metrics on WAN links Me (Jul 19)
- Re: IGP metrics on WAN links Joe Abley (Jul 19)
- Re: IGP metrics on WAN links Me (Jul 19)
- Re: IGP metrics on WAN links Joe Abley (Jul 19)
- RE: IGP metrics on WAN links Daniel Golding (Jul 19)
- Re: IGP metrics on WAN links Warren Van Camp (Jul 19)
- Re: IGP metrics on WAN links Sush Bhattarai (Jul 19)
- <Possible follow-ups>
- Re: IGP metrics on WAN links Warren Van Camp (Jul 19)
- RE: IGP metrics on WAN links Frank Scalzo (Jul 19)
- Re: IGP metrics on WAN links Jennifer Rexford (Jul 24)