From owner-freebsd-questions@FreeBSD.ORG Mon Nov 29 04:52:08 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9DB781065670 for ; Mon, 29 Nov 2010 04:52:08 +0000 (UTC) (envelope-from carl@chave.us) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 3FBBB8FC0A for ; Mon, 29 Nov 2010 04:52:08 +0000 (UTC) Received: by fxm16 with SMTP id 16so2267156fxm.13 for ; Sun, 28 Nov 2010 20:52:07 -0800 (PST) MIME-Version: 1.0 Received: by 10.223.98.198 with SMTP id r6mr4797178fan.96.1291004965979; Sun, 28 Nov 2010 20:29:25 -0800 (PST) Received: by 10.223.94.79 with HTTP; Sun, 28 Nov 2010 20:29:25 -0800 (PST) Date: Sun, 28 Nov 2010 23:29:25 -0500 Message-ID: From: Carl Chave To: FreeBSD Questions Content-Type: text/plain; charset=ISO-8859-1 Subject: Bridging Gigabit and Fast Ethernet Interfaces X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Nov 2010 04:52:08 -0000 if_bridge(4) says: The if_bridge driver currently supports only Ethernet and Ethernet-like (e.g., 802.11) network devices, with exactly the same interface MTU size as the bridge device. Am I correct to assume then that I can bridge a gigabit interface and a fast ethernet interface and that one of the "negatives" of doing this is that Jumbo frames couldn't be used on the gigabit side? I've got an Atom based server with an onboard gigabit nic and only one PCI slot. The server sits physically close to my 10/100 switch that hangs off my firewall. I was thinking of putting a 10/100 nic into the single PCI slot and running that to the 10/100 switch for internet access and then running cable across the room from the gigabit interface to a gigabit switch on my workbench. Wired gigabit clients on the bench would then have the benefit of gigabit access to the server for doing backups but also still have internet access via the server's bridge interface right? Is there a reason I wouldn't want to do it this way? Thanks, Carl