From owner-freebsd-net@FreeBSD.ORG Fri Mar 14 12:28:22 2008 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 9E5A5106567C for ; Fri, 14 Mar 2008 12:28:22 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: from wf-out-1314.google.com (wf-out-1314.google.com [209.85.200.172]) by mx1.freebsd.org (Postfix) with ESMTP id 72BB38FC1A for ; Fri, 14 Mar 2008 12:28:22 +0000 (UTC) (envelope-from pyunyh@gmail.com) Received: by wf-out-1314.google.com with SMTP id 25so3892401wfa.7 for ; Fri, 14 Mar 2008 05:28:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:received:received:date:from:to:cc:subject:message-id:reply-to:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; bh=8GlKhq+kLMFM2I5ZPqiH9s2a8Wx89O23/RzZmthLvqc=; b=G7R0JuUuBJHDj9UAD5P6q9vBg3AhDw1Ebf/mjKk/S/YojhSzO7aC7eei9Z/DYTlbRu+uG8Wi2dIZLY1Ad7ZUsrAjPthWoDb2RIATl5cQRtB418vVDPKdlzC5cvy9zdRhchsGy89/uGYCNGXCI/Lnr2v93Gkt8ieQTXYTXh0PvqM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:reply-to:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; b=rSyM+4sT1KqEZhXsCqZydIg8U7Ghrki7lrIwgXiuwh03Sh8gPmjH0lrm+ha+LVmKdpPZNyDZ6CPVGfmgwnp+WGuKHhKcc5YX2w4tIT40Nj2RMaF6WBUcTZawOTmIveJS4fAH03TxCSXL363IaNOfVKGohPo909Q7kaR+KdV6HKY= Received: by 10.143.37.20 with SMTP id p20mr4798337wfj.236.1205497701674; Fri, 14 Mar 2008 05:28:21 -0700 (PDT) Received: from michelle.cdnetworks.co.kr ( [211.53.35.84]) by mx.google.com with ESMTPS id 38sm23256670wrl.1.2008.03.14.05.28.18 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 14 Mar 2008 05:28:20 -0700 (PDT) Received: from michelle.cdnetworks.co.kr (localhost.cdnetworks.co.kr [127.0.0.1]) by michelle.cdnetworks.co.kr (8.13.5/8.13.5) with ESMTP id m2ECSFad024909 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 14 Mar 2008 21:28:15 +0900 (KST) (envelope-from pyunyh@gmail.com) Received: (from yongari@localhost) by michelle.cdnetworks.co.kr (8.13.5/8.13.5/Submit) id m2ECSEB5024908; Fri, 14 Mar 2008 21:28:14 +0900 (KST) (envelope-from pyunyh@gmail.com) Date: Fri, 14 Mar 2008 21:28:14 +0900 From: Pyun YongHyeon To: Giulio Ferro Message-ID: <20080314122814.GH22788@cdnetworks.co.kr> References: <47D7C34E.8060805@zirakzigil.org> <47D817D2.9010306@errno.com> <47D8499A.5070605@zirakzigil.org> <20080313033029.GF16972@cdnetworks.co.kr> <47D92F9D.4070701@zirakzigil.org> <20080314001704.GA22788@cdnetworks.co.kr> <47DA4DCD.6050304@zirakzigil.org> <20080314101555.GF22788@cdnetworks.co.kr> <47DA682E.9010504@zirakzigil.org> <47DA6C30.400@zirakzigil.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47DA6C30.400@zirakzigil.org> User-Agent: Mutt/1.4.2.1i Cc: freebsd-net@freebsd.org, Andrew Thompson Subject: Re: VLAN trunking and fragmentation X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: pyunyh@gmail.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Mar 2008 12:28:22 -0000 On Fri, Mar 14, 2008 at 01:14:40PM +0100, Giulio Ferro wrote: > Giulio Ferro wrote: > >That's it! > >Now seems to work properly, the problem then is with hardware tagging. > > > >My question now is: can I use vlans without htag in a complex system with > >heavy traffic without a significant performance loss? If not, how much > >will it > >take to fix the issue with the driver? > > > > > There's seems to be another problem now. > > If I send flood pings to the other host with big packets (say 2000 > bytes) it works, but one > packet out of 4 or 5 takes a huge time to round-trip (about 1000ms), > whereas the rest > of the packets have a reasonable 0.2 ms average... > > > I fear this may lead to unacceptable performance for real-time protocols > (ie voip) in a > production environment. > > Do you think the problem is localized in the "re" driver? If so I could Yes. > just change the > network interface and be done with that. (In production I can use bge > cards). > > > Thanks again. -- Regards, Pyun YongHyeon