From owner-freebsd-current Mon Mar 24 09:22:24 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id JAA19481 for current-outgoing; Mon, 24 Mar 1997 09:22:24 -0800 (PST) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.50]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id JAA19475 for ; Mon, 24 Mar 1997 09:22:21 -0800 (PST) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id KAA22902; Mon, 24 Mar 1997 10:09:01 -0700 From: Terry Lambert Message-Id: <199703241709.KAA22902@phaeton.artisoft.com> Subject: Re: Is 802.3 supported? To: wollman@khavrinen.lcs.mit.edu (Garrett Wollman) Date: Mon, 24 Mar 1997 10:09:01 -0700 (MST) Cc: awhawks@ibm.net, current@freebsd.org In-Reply-To: <199703241510.KAA13525@khavrinen.lcs.mit.edu> from "Garrett Wollman" at Mar 24, 97 10:10:19 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > I have a NE2000 card and a IBM 9229 Token-Ring to Ethernet bridge which > > currently talks to everything fine except for my FreeBSD Box. I finaly > > found in the docs that the default is Ethernet-II protocol. Can I set > > something in the kernel that will make it use 802.3 (like the bidge) > > instead? > > No. It's not actually very hard to do this, but we are unfortunately > out of interface flags at the moment which you might set to > enable/disable such translation. > > If you'd like to try to change the code yourself, you need to look in > net/if_ethersubr.c at the function ether_output(). Rather than > filling in the Ethertype in the header, you'll need to put the packet > length there and folllow the Ethernet header with hex 'aa aa 03 00 00 > 00' and the Ethertype. This also means that the MTU of each interface > would be reduced to 1494 from 1500 (one of the reasons why 802.2 > encapsulation is rarely used under IP). Doesn't the FDDI interface use 802.3 encapsulation? Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.