From owner-freebsd-questions Sat Jun 1 5:33: 4 2002 Delivered-To: freebsd-questions@freebsd.org Received: from topaz.mdcc.cx (topaz.mdcc.cx [212.204.230.141]) by hub.freebsd.org (Postfix) with ESMTP id 7743137B404 for ; Sat, 1 Jun 2002 05:33:01 -0700 (PDT) Received: from k7.mavetju (topaz.mdcc.cx [212.204.230.141]) by topaz.mdcc.cx (Postfix) with ESMTP id 706E72B6AE; Sat, 1 Jun 2002 14:32:37 +0200 (CEST) Received: by k7.mavetju (Postfix, from userid 1001) id 76F8A6A711E; Sat, 1 Jun 2002 22:32:02 +1000 (EST) Date: Sat, 1 Jun 2002 22:32:02 +1000 From: Edwin Groothuis To: Abc Xyz Cc: freebsd-questions Subject: Re: traceroute precision Message-ID: <20020601223202.C552@k7.mavetju> References: <200206011119.g51BJhT39093@groggy.anc.acsalaska.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <200206011119.g51BJhT39093@groggy.anc.acsalaska.net>; from abc@anchorageinternet.org on Sat, Jun 01, 2002 at 11:19:43AM +0000 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sat, Jun 01, 2002 at 11:19:43AM +0000, Abc Xyz wrote: > FBSD 4.5 > > i am not sure why this is, or if it is something > that 'needs' correction - but if i traceroute > from 2 different endpoints - to each other, > i get VASTLY different results. from what > i understand of ICMP (tiny bit) this should > not occur - ie - each hop should be measured > individually regardless of the speed of the endpoints. It should not occur if you had two the same tests. Right now you have a test of going from a cablemodem to an analogue modem and a test of going from an analogue modem to a cable modem. Anyway, the thing you see is that the serialisation delay of an analogue modem is much higher than that of a cablemodem. If you reduce the speed of your cablemodem back to the speed of the analogue modem, you will see it has the same values. Edwin -- Edwin Groothuis | Personal website: http://www.MavEtJu.org edwin@mavetju.org | Interested in MUDs? Visit Fatal Dimensions: bash$ :(){ :|:&};: | http://www.FatalDimensions.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message