Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83 (MC840302); site ecrcvax.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!seismo!mcvax!unido!ecrcvax!pete From: pete@ecrcvax.UUCP (Pete Delaney) Newsgroups: net.dcom,net.lan Subject: Re: TCP/IP and XNS compatibility ? Message-ID: <161@ecrcvax.UUCP> Date: Thu, 17-Oct-85 15:39:00 EDT Article-I.D.: ecrcvax.161 Posted: Thu Oct 17 15:39:00 1985 Date-Received: Sat, 19-Oct-85 08:12:31 EDT References: <151@ecrcvax.UUCP> Reply-To: pete@ecrcvax.UUCP (Pete Delaney) Organization: ECRC, D-8000 Muenchen 81, W. Germany Lines: 30 Xref: watmath net.dcom:1387 net.lan:1099 In article mark@tove.UUCP (Mark Weiser) writes: >Maryland, Cornell, and Berkeley all have Dandelions, Vaxes, Suns, >etc. on the same ethernet cable talking mixtures of XNS and TCP/IP >betwixt themselves. All works well. The business about the >Dandelion's using a slightly different ethernet spec makes a (hardware >only) difference with which tranceivers will work with which ethernet >boards, but has nothing to do with the levels of protocol above >raw etherpackets. I've heard from Bull that type1 and type2 tranceivers are compatible on the cable but that type1 controllers can not be used with type 2 tranceivers; perhaps because the new tranceivers sink more current. Today I heard they are not conpatible on the cable. Any other optiions? > >(Well, is there is the funny business of TCP/IP using the XNS type >field as a length field, but this is gotten around by XNS reserving >all types which are valid TCP/IP lengths). Are you sure it's not the other way around. The ISO link headers have a length field where TCP/IP has a type field. -- -------------------------------------------- Pete Delaney - Rocky Mnt. Unix Consultant Phone: (49) 89 92699-139 European Computer-Industry Research Center UUCP: mcvax!unido!ecrcvax!pete ArabellaStrasse 17 UUCP Domain: pete@ecrcvax.UUCP D-8000 Muenchen 81, West Germany X25: (262)-45890040262 CSNET:pete%ecrcvax.UUCP@Germany.CSNET Login: ------------------------------------------------------------------------------