Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version Tektronix Network News Daemon (B 2.10.2 based); site daemon.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!mtuxo!mtunh!mtung!mtunf!ariel!vax135!cornell!uw-beaver!tektronix!daemon!davest From: davest@daemon.UUCP (Dave Stewart) Newsgroups: net.news.b Subject: Re: Duplicates Message-ID: <943@daemon.UUCP> Date: Thu, 11-Jul-85 15:03:52 EDT Article-I.D.: daemon.943 Posted: Thu Jul 11 15:03:52 1985 Date-Received: Sat, 13-Jul-85 12:24:30 EDT References: <279d59d3.1de6@apollo.uucp> Reply-To: davest@daemon.UUCP (Dave Stewart) Organization: Tektronix, Beaverton OR Lines: 28 In article <279d59d3.1de6@apollo.uucp> rees@apollo.uucp (Jim Rees) writes: >Recently I've been getting duplicate articles again. There doesn't >seem to be any pattern this time. They are rejected here, and I >don't know why they aren't getting rejected downstream. ... >Path: wanginst!decvax!mcnc!unc!ulysses!allegra!princeton!down!honey >Path: wanginst!linus!decvax!mcnc!unc!ulysses!allegra!princeton!down!honey Note that when a duplicate article is rejected by rnews, it will get retransmitted to downstream sites anyway. The reasoning is that this makes for higher network connectivity if there is a higher degree of article redundancy. Articles are prevented from "looping" around a cycle in the graph because rnews will not forward an article to any site that appears in the "Path" header line. I might add that our local news administrator has added a sys file flag that prevents duplicates from being forwarded along. We use this on "tektronix", our gateway, when forwarding to other Tek sites, because they are a captive part of the network being fed by just one site (tektronix). Send mail to tektronix!rdoty or tektronix!usenet for diffs of rnews code, if you are interested. -- David C. Stewart uucp: tektronix!davest Small Systems Support Group csnet: davest@TEKTRONIX Tektronix, Inc. phone: (503) 627-5418