Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!cwjcc!ukma!david From: david@ms.uky.edu (David Herron -- One of the vertebrae) Newsgroups: comp.mail.misc Subject: Re: sigh (was Re: Short-circuiting a route) Message-ID: <12186@s.ms.uky.edu> Date: 16 Jul 89 20:35:57 GMT References: <1062@aber-cs.UUCP> <59767@uunet.UU.NET> Reply-To: david@ms.uky.edu (David Herron -- One of the vertebrae) Organization: U of Kentucky, Mathematical Sciences Lines: 71 In article <59767@uunet.UU.NET> rick@uunet.UU.NET (Rick Adams) writes: >> In article <656@kl-cs.UUCP> jonathan@cs.keele.ac.uk (Jonathan Knight) writes: >> >> As I understand it, the argument for re-routing and short-circuiting >> revolves around the idea that some people feel they know how >> to route mail better than the people who started the mail off. >Does anyone seriously claim that this is not true? Ignore the .1% I wonder ... how do you know the sender knows *ANYTHING* about routing? In my environment, most of the users don't care a whit about UUCP routing, or any other routing style at that. They just want to use a simple addressing style, user@place is fine, and send it off. So I configure the mailer here to use pathalias to generate a list of routes and tell people to specify user@host.uucp, but *they* don't know anything. It would please me greatly if there were some better way that I could tell my mailer to get mail to somewhere else. Even though us map maintainers do a pretty good job at map maintaining, we're not perfect... Lots of links are dead/bad/flaky, and just change all the time anyway. This system of routing is *inherently* incapable of handling the number of systems attached to it. No person can keep a map of the network, in its current state, in his/her head. An interesting alternative routing system is vaguely related to something that AT&T does internally. That is, "guidepost" routing system. In guidepost routing, a message passing through the network has attached to it some hints about where it's supposed to go. It's rather like how people find their way around in the real world, go down main street until you see the green house with chartreuse shutters then turn left ... Everybody's familiar with the idea that you can send mail to att!some-machine!some-user and have it get there, even though some-machine may be a couple hops away. And 'att' isn't just one machine, it's many machines spread all over the country. Well, internally they've taken that farther, with (at least) an 'arpa' "machine" through which you route mail to send it out to the TCP/IP network. At a first guess I think, if "we" adopted a system like that we could set up names for every city or (other geographical area) and put out addresses like lex.ky.us!davids!david dal.tx.us!killer!wisner chi.il.us!chinet!... chi.il.us!bay.ca.us!... It's similar to the old system of listing your address relative to some well known site ... It's silly that the current system encourages that all sites be listed in the official maps... It makes the maps so unweildy, see, and isn't necessary for 80-90% of the cases. -- <- David Herron; an MMDF guy <- ska: David le casse\*' {rutgers,uunet}!ukma!david, david@UKMA.BITNET <- <- WARNING: Hunting season is now open in West Virginia!