Date: Mon, 24 Mar 1997 10:09:01 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: wollman@khavrinen.lcs.mit.edu (Garrett Wollman) Cc: awhawks@ibm.net, current@freebsd.org Subject: Re: Is 802.3 supported? Message-ID: <199703241709.KAA22902@phaeton.artisoft.com> In-Reply-To: <199703241510.KAA13525@khavrinen.lcs.mit.edu> from "Garrett Wollman" at Mar 24, 97 10:10:19 am
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> > 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.
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