nanog mailing list archives
Re: Why doesn't BGP...
From: "Daryn D. Fisher" <oz () thoughtport net>
Date: Mon, 11 Nov 96 13:17:44 -0700
Is this really a discussion for this list-server? I don't know about all of you, but I don't have the time to continually read a re-hash of age-old discussion. Peter Lothberg <roll () Stupi SE> wrote:
On the radio1:: "101 north is congested, take 280 instead" Guess what hapens 5 minutes laster; On the radio2:: "280 north is congested, take 101 instead"
goto on the radio1
Goto the theory of control systems :) This is a textbook case of a system with too strong negative feedback loop. There are two ways to deal with that -- reduce the feedback (say, make the announcement in a barely intelligible speech, so only 1/3rd of drivers will get it :), or increase inertia of the system (by posting 10MPH speed limit :), so announcements can come fast enough to compensate each other. Seriously, the load-sensitive traffic management _can_ be done, but to do it you a) need full knowledge of the load patterns, plus some historical data, and b) have a way to control system in steps less drastic than rerouting an entire flow. Can't be done with ciscos, or any existing routers... --vadim - - - - - - - - - - - - - - - - -
Current thread:
- Re: Why doesn't BGP..., (continued)
- Re: Why doesn't BGP... Vadim Antonov (Nov 10)
- Re: Why doesn't BGP... Peter Lothberg (Nov 11)
- Re: Why doesn't BGP... Jon Zeeff (Nov 11)
- Re: Why doesn't BGP... Avi Freedman (Nov 11)
- Re: Why doesn't BGP... Michael Dillon (Nov 11)
- Re: Why doesn't BGP... Why not? I'm not redistributing. Edward Henigin (Nov 11)
- Re: Why doesn't BGP... Why not? I'm not redistributing. Jon Zeeff (Nov 11)
- Re: Why doesn't BGP... Jon Zeeff (Nov 11)
- Re: Why doesn't BGP... Andrew Partan (Nov 11)
- Re: Why doesn't BGP... Daryn D. Fisher (Nov 11)
- Re: Why doesn't BGP... Jon Zeeff (Nov 11)
- Re: Why doesn't BGP... Avi Freedman (Nov 11)
- Re: Why doesn't BGP... Dorian R. Kim (Nov 11)
- Re: Why doesn't BGP... -Reply Jon Zeeff (Nov 12)
- Re: Why doesn't BGP... -Reply Alex.Bligh (Nov 12)
- Re: Why doesn't BGP... -Reply Larry J. Plato (Nov 16)