Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!lll-crg!nike!ucbcad!ucbvax!XX.LCS.MIT.EDU!JNC From: JNC@XX.LCS.MIT.EDU ("J. Noel Chiappa") Newsgroups: mod.protocols.tcp-ip Subject: Re: Poor performance related to egp? Message-ID: <12251267746.29.JNC@XX.LCS.MIT.EDU> Date: Fri, 31-Oct-86 16:03:42 EST Article-I.D.: XX.12251267746.29.JNC Posted: Fri Oct 31 16:03:42 1986 Date-Received: Mon, 3-Nov-86 21:12:51 EST References: <8610310055.AA01124@beno.CSS.GOV> Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 19 Approved: tcp-ip@sri-nic.arpa I seem to explain this every 2 months. The problem is not caused by EGP, which is telling you exactly what the gateway you are neighbours with is doing itself with packets to given destinations, but the routing protocol (GGP) which is used by the core gateways among themselves. It predates EGP, was not designed with the pattern of information flows that you see in EGP in mind, and is the cause of the problem. When GGP is replaced (which will probably be when the PDP11's are) the problem will magically disappear without any changes to EGP. For a more detailed explanation of the problem, look in the TCP-IP archive for a message I sent out at Thu 6 Mar 86 18:16:01-EST which goes into great detail. Just out of interest, were you on TCP-IP then? Noel -------