Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!uw-beaver!uoregon!dboyes From: dboyes@uoregon.uoregon.edu (David Boyes) Newsgroups: comp.mail.uucp Subject: Re: Rerouting considered GOOD Message-ID: <2947@uoregon.uoregon.edu> Date: 9 Oct 88 01:45:40 GMT References: <8809212215.AA21035@naggum.se> <2540@sultra.UUCP> <371@ditka.UUCP> <1988Sep27.105604.5152@ateng.ateng.com> <6@jove.dec.com> <12658@ncoast.UUCP> Reply-To: dboyes@drizzle.UUCP (David Boyes) Organization: University of Oregon, Computer Science, Eugene OR Lines: 37 >Figures. I bet rutgers!postmaster has you KILLed too, if he/she/it even >reads this newsgroup; idealists aren't known for accepting the real world.... Sigh. Give Mel a break -- he's trying to make something good happen, whether everyone else thinks so or not. >[a rather hostile comment about map update schemes...] >Also include a method of getting them into use without requiring sites like >ncoast to run pathalias every day. We don't all have four-digit Vaxen. (I >say this because if active rerouting becomes the accepted way to handle mail, >ncoast will probably do it as well, being that we pass lots of mail.) Having dealt with networks that are totally map-driven (BITNET, for example), it *IS* possible to have reasonably* up-to-date maps, PROVIDED someone takes the time and effort to do so. With BITNET, where if you aren't in the routing tables, you CAN'T communicate, it's a matter of necessity. The scheme developed is simple, and I think someone already suggested it -- a base file and small update files applied on a periodic basis, usually monthly. To give you a sense of what's involved, the current routing information files are approximately 40,000 records long (card images -- this is IBMland remember). The monthly update files are usually 250-700 records and take approximately 15 seconds of CPU on a 4341 (roughly equivalent to a 11/780) to apply. It's significant, but not overwhelming. As far as the issue of private or local links go, if you don't want problems with them and don't want to register them, nothing showing those links should ever leave your site. >++Brandon -- David Boyes | Internet: dboyes@drizzle.cs.uoregon.edu | (503) 686-4394 | BITNET: dboyes@uoregon | DECnet mail addresses -- just say no.