From owner-freebsd-net@FreeBSD.ORG Fri Dec 11 22:44:23 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 55B66106566C for ; Fri, 11 Dec 2009 22:44:23 +0000 (UTC) (envelope-from gosand1982@yahoo.com) Received: from n4-vm0.bullet.mail.gq1.yahoo.com (n4-vm0.bullet.mail.gq1.yahoo.com [67.195.9.7]) by mx1.freebsd.org (Postfix) with SMTP id 24F9E8FC16 for ; Fri, 11 Dec 2009 22:44:23 +0000 (UTC) Received: from [67.195.9.82] by n4.bullet.mail.gq1.yahoo.com with NNFMP; 11 Dec 2009 22:30:58 -0000 Received: from [67.195.9.102] by t2.bullet.mail.gq1.yahoo.com with NNFMP; 11 Dec 2009 22:30:57 -0000 Received: from [127.0.0.1] by omp106.mail.gq1.yahoo.com with NNFMP; 11 Dec 2009 22:30:57 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 887164.41905.bm@omp106.mail.gq1.yahoo.com Received: (qmail 27124 invoked by uid 60001); 11 Dec 2009 22:30:57 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1260570657; bh=t2837N54IVrFSwGFQJfuEgiR8HwKZEbXpVdl7bTOlNQ=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=qsCWVaUg/1rjR+fU8EVh1hHzWixCJ3ecQa0NwTWxyCAGBYlmmiceMyC4VYfzCMEc33fxA/RaHpwAdZLsSv/9LqI1xOw5C77ouY57pbgJRjARfjUjfPKhTuq+rUfn+0V3Uv8qdVJXK6RLOVDCcGApm5DARLH458tbBhTtOKEAOx4= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=ZXtFnE1iSjWGmW+Q6pcPm5MTTXD5xPWfhHrqf8P/eHisVVn5K3sYdIxaxdjbcPKyDP2pwD/Whhxr3BH20Be06zyWMsveMemDlGz6SxBfjpOotZ9M6n/8hwCvdYUw4wLBj1nzlbo1ZrnU0oXvgPM72gemlFDfn0UvNuBkHwICU/I=; Message-ID: <714006.26134.qm@web111617.mail.gq1.yahoo.com> X-YMail-OSG: JTksD5YVM1mbavztyYjo6weNtOW2CBzRGiNN5MmF7aZpZBGMZqP8Z0n1Bdfehr2GxDkHlkwYPnlF140taFEEs4nDqJ.mp4z9w4TQ2HOir4yhXL.HnlEGlFvCI6YLw_2hBwSAlY78OGqWtwYOV29OEQpEdyzkIzl4600vAJKPNwnsw06qyMt0MwvWQDKEesG6BIxrUDGpqqKwimc.7hPKKIZXZ2J4rf.G8GZRTdMSHZDDZafGg2SN2GUqmHPLMYlf1tA- Received: from [24.5.102.43] by web111617.mail.gq1.yahoo.com via HTTP; Fri, 11 Dec 2009 14:30:57 PST X-Mailer: YahooMailRC/240.3 YahooMailWebService/0.8.100.260964 Date: Fri, 11 Dec 2009 14:30:57 -0800 (PST) From: George Sanders To: freebsd-net@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: 10gigE link with FreeBSD hosts ? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Dec 2009 22:44:23 -0000 I am seeing Sun Microsystems branded 10gigE adaptors (pci-x) on ebay nowadays for $500. So ... let's say I took some plain-jane, modern-ish PC (intel core, or c2d, pci-x, etc.) and set up this topology: a <-- cable --> b <-- cable --> c and on each of (a) and (c) put one 10gigE adaptor, and on (b) put two 10gigE adaptors, and set up bridging on (b) Would it be reasonable to then expect to transfer data from (a) to (c) at a, roughly, 10 gigabit/s rate ? If not, what is the limiting factor ? The idea is that I would use a commodity PC + multiple pci-X slots as a "poor mans" 10gigE switch ... I can't afford an actual 10gigE switch, but I don't need that many ports anyway. Any comments or field reports would be appreciated.