From owner-freebsd-net@FreeBSD.ORG Fri Apr 13 06:40:12 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 40FBF106566B for ; Fri, 13 Apr 2012 06:40:12 +0000 (UTC) (envelope-from chinaitvc@gmail.com) Received: from sam.nabble.com (sam.nabble.com [216.139.236.26]) by mx1.freebsd.org (Postfix) with ESMTP id 19A7E8FC15 for ; Fri, 13 Apr 2012 06:40:12 +0000 (UTC) Received: from [192.168.236.26] (helo=sam.nabble.com) by sam.nabble.com with esmtp (Exim 4.72) (envelope-from ) id 1SIaB1-00025y-PN for freebsd-net@freebsd.org; Thu, 12 Apr 2012 23:40:11 -0700 Date: Thu, 12 Apr 2012 23:40:11 -0700 (PDT) From: hahacc To: freebsd-net@freebsd.org Message-ID: <1334299211780-5637490.post@n5.nabble.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: Intel 82574L interface wedging - em7.3.2/8.2-STABLE 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, 13 Apr 2012 06:40:12 -0000 Just for guys who may arrive here after searching: 1.there's kernel bug in intel 82574L e1000e driver on centos 6(MSI/MSI-X interrupts issue), we can resolve this by install kmod-e1000e package from ELrepo.org and later add pcie_aspm=off e1000e.IntMode=1,1 e1000e.InterruptThrottleRate=10000,10000 acpi=off to kernel parameters. You can read more info [URL="http://www.doxer.org/learn-linux/resolved-intel-e1000e-driver-bug-on-82574l-ethernet-controller-causing-network-blipping/"]Intel e1000e driver bug on 82574L Ethernet controller causing network blipping[/URL]. 2.For the high Tx traffic, this was caused by port 53 dns flooding attack. I've resolved this by writing some iptable rules. More info here: [URL="http://www.doxer.org/learn-linux/resolved-port-53-dns-flooding-attack/"]port 53 dns flooding attack[/URL] -- View this message in context: http://freebsd.1045724.n5.nabble.com/Intel-82574L-interface-wedging-em7-3-2-8-2-STABLE-tp5529028p5637490.html Sent from the freebsd-net mailing list archive at Nabble.com.