From owner-freebsd-net@FreeBSD.ORG Thu Oct 9 04:53:45 2003 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3415E16A4B3 for ; Thu, 9 Oct 2003 04:53:45 -0700 (PDT) Received: from smtp01.wxs.nl (smtp01.wxs.nl [195.121.6.61]) by mx1.FreeBSD.org (Postfix) with ESMTP id 11CBF43FBF for ; Thu, 9 Oct 2003 04:53:44 -0700 (PDT) (envelope-from pblok@inter.NL.net) Received: from bsdpc (ip503cf841.speed.planet.nl [80.60.248.65]) by smtp01.wxs.nl (iPlanet Messaging Server 5.2 HotFix 1.14 (built Mar 18 2003)) with ESMTP id <0HMH00L59FGI08@smtp01.wxs.nl> for freebsd-net@freebsd.org; Thu, 09 Oct 2003 10:55:31 +0200 (MEST) Date: Thu, 09 Oct 2003 10:55:30 +0200 From: "Peter J. Blok" To: freebsd-net@freebsd.org Message-id: <200310091055.30730.pblok@inter.NL.net> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline User-Agent: KMail/1.5.3 Subject: Giga-bit switches X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Oct 2003 11:53:45 -0000 Hi, This is just a warning. I am setting up a Giga-bit network trying to use Jumbo frames. For NIC the ability to do larger frames is usually listed, but that doesn't seem to be the case for switches. I have bought a Netgear GS104 switch, which does list a buffer per port of 12K. However, according to Netgear support, it is not supported and working. They just say that there is no mentioning of Jumbo frame support, therefore it is not supported. Even on the more expensive Netgear switches it is not listed, so it is trial-on-error policy. My understanding is that the Giga-bit definition includes large frame support and if you claim to have a Giga-bit switch you should support large frames, unless specifically excluded. So be warned. Peter