From owner-freebsd-net@FreeBSD.ORG Sat Dec 18 19:42:37 2010 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 19040106564A for ; Sat, 18 Dec 2010 19:42:37 +0000 (UTC) (envelope-from tad1214@aol.com) Received: from imr-ma05.mx.aol.com (imr-ma05.mx.aol.com [64.12.100.31]) by mx1.freebsd.org (Postfix) with ESMTP id 3FBBF8FC15 for ; Sat, 18 Dec 2010 19:42:35 +0000 (UTC) Received: from mtaout-mb06.r1000.mx.aol.com (mtaout-mb06.r1000.mx.aol.com [172.29.41.70]) by imr-ma05.mx.aol.com (8.14.1/8.14.1) with ESMTP id oBIJVna2024179; Sat, 18 Dec 2010 14:31:50 -0500 Received: from [10.44.205.169] (unknown [166.205.15.17]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mtaout-mb06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPSA id 2BA1CE0000AE; Sat, 18 Dec 2010 14:31:48 -0500 (EST) References: <4D0CFEFF.3000902@rdtc.ru> In-Reply-To: <4D0CFEFF.3000902@rdtc.ru> Mime-Version: 1.0 (iPhone Mail 8C148) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Message-Id: X-Mailer: iPhone Mail (8C148) From: Thomas Donnelly Date: Sat, 18 Dec 2010 13:31:47 -0600 To: Eugene Grosbein x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:379232288:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d29464d0d0c247979 X-AOL-IP: 166.205.15.17 Cc: "net@freebsd.org" Subject: Re: lagg/lacp poor traffic distribution 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: Sat, 18 Dec 2010 19:42:37 -0000 On Dec 18, 2010, at 12:35 PM, Eugene Grosbein wrote: > Hi! >=20 > I've loaded router using two lagg interfaces in LACP mode. > lagg0 has IP address and two ports (em0 and em1) and carry untagged frames= . > lagg1 has no IP address and has two ports (igb0 and igb1) and carry > about 1000 dot-q vlans with lots of hosts in each vlan. >=20 > For lagg1, lagg distributes outgoing traffic over two ports just fine. > For lagg0 (untagged ethernet segment with only 2 MAC addresses) > less than 0.07% (54Mbit/s max) of traffic goes to em0 > and over 99.92% goes to em1, that's bad. >=20 > That's general traffic of several thousands of customers surfing the web, > using torrents etc. I've glanced over lagg/lacp sources if src/sys/net/ > and found nothing suspicious, it should extract and use srcIP/dstIP for ha= sh. >=20 > How do I debug this problem? >=20 > Eugene Grosbein I'm not familiar with the freebsd implementation but Cisco load balances bas= ed on destination Mac address so If everything is headed towards the gateway= , they will all go over one link. Check the load balancing algorithm on both= sides. I usually balance on src+dst mac.=20 -=3DTom > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"