From owner-freebsd-hackers Fri Sep 27 05:59:26 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id FAA17427 for hackers-outgoing; Fri, 27 Sep 1996 05:59:26 -0700 (PDT) Received: from darling.cs.UMD.EDU (10862@darling.cs.umd.edu [128.8.128.115]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id FAA17401 for ; Fri, 27 Sep 1996 05:59:22 -0700 (PDT) Received: by darling.cs.UMD.EDU (8.7.6/UMIACS-0.9/04-05-88) id IAA11945; Fri, 27 Sep 1996 08:59:16 -0400 (EDT) Message-Id: <199609271259.IAA11945@darling.cs.UMD.EDU> To: dg@root.com cc: rohit@cs.UMD.EDU, freebsd-hackers@FreeBSD.ORG Subject: Re: Giant Sized Ethernet Packets In-reply-to: Your message of "Wed, 18 Sep 1996 20:50:52 PDT." <199609190350.UAA01225@root.com> Date: Fri, 27 Sep 1996 08:59:16 -0400 From: Rohit Dube Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 18 Sep 1996 20:50:52 -0700 dg@root.com writes: =>I just spent about 15 minutes looking over the DC21140 hardware reference =>manual. It appears that the chip can except larger frames, but it signals =>an error condition when this occurs, so I don't think you could do this =>as a normal mode of operation. It also appears that it is possible to =>generate larger than 1500 byte packets, but the frames wouldn't be ethernet =>(the type/length field would not be IEEE 802.3) and you'd have to invent your =>own encapsulation. ...that's how I read it, anyway. Perhaps Matt Thomas will =>correct me on this. => =>-DG => =>David Greenman =>Core-team/Principal Architect, The FreeBSD Project Another quick question before I start hacking : DO hubs have a problem with 1500+ bytes packet. I am using an Asante 100BaseTX hub to hook up my FreeBSD machines. If the hub is intelligent and drops packets greater than 1500 bytes in size, then I would be in trouble even before I start. Julian/Amancio : care to share you configuartion? Thanks. --rohit.