From owner-freebsd-hackers Sun Mar 24 02:16:41 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id CAA21931 for hackers-outgoing; Sun, 24 Mar 1996 02:16:41 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id CAA21920 for ; Sun, 24 Mar 1996 02:16:35 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id MAA18349 for ; Sun, 24 Mar 1996 12:16:33 +0200 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id LAA25020 for freebsd-hackers@freebsd.org; Sun, 24 Mar 1996 11:16:32 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.4/8.6.9) id KAA00946 for freebsd-hackers@freebsd.org; Sun, 24 Mar 1996 10:38:14 +0100 (MET) From: J Wunsch Message-Id: <199603240938.KAA00946@uriah.heep.sax.de> Subject: Re: Changing Ethernet frame size to 576 bytes? To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Sun, 24 Mar 1996 10:38:13 +0100 (MET) Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199603240845.TAA24105@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Mar 24, 96 07:15:50 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL24 ME8a] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Michael Smith wrote: > > This means that every IP packet you send has to be fragmented into three > > IP fragments as it travels over the Internet, and if any single one of > > This only happens if your data has to move over a link imposing a > smaller MSS. Not many do - mostly PPP and SLIP links. Just as an evidence that the ``path MTU discovery'' seems to work. I'm doing all my remote traffic via SLIP with an MTU of 552 (not even 576). Anyway: j@uriah 1314% netstat -s | fgrep fragment 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 output datagrams fragmented 0 fragments created 0 datagrams that can't be fragmented -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)