From owner-freebsd-net@FreeBSD.ORG Thu May 29 22:18:47 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 412611065676 for ; Thu, 29 May 2008 22:18:47 +0000 (UTC) (envelope-from gpalmer@freebsd.org) Received: from noop.in-addr.com (in-addr.broker.freenet6.net [IPv6:2001:5c0:8fff:fffe::214d]) by mx1.freebsd.org (Postfix) with ESMTP id 08F258FC22 for ; Thu, 29 May 2008 22:18:47 +0000 (UTC) (envelope-from gpalmer@freebsd.org) Received: from gjp by noop.in-addr.com with local (Exim 4.54 (FreeBSD)) id 1K1qSM-0004tg-6M; Thu, 29 May 2008 18:18:46 -0400 Date: Thu, 29 May 2008 18:18:46 -0400 From: Gary Palmer To: Andrea Venturoli Message-ID: <20080529221846.GG1142@in-addr.com> References: <483D7A22.9000206@netfence.it> <20080528154800.GF1142@in-addr.com> <483F1A8E.4070600@netfence.it> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <483F1A8E.4070600@netfence.it> Cc: freebsd-net@freebsd.org Subject: Re: Testing lagg 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: Thu, 29 May 2008 22:18:47 -0000 On Thu, May 29, 2008 at 11:05:18PM +0200, Andrea Venturoli wrote: > Gary Palmer ha scritto: > > >Does the switch have spanning tree enabled? > > Yes. > Should it be? It can be left on but if you can disable it on the ports that you are using for lagg then that should help. If you can't turn it off on a per-port basis and you don't have a meshed switch topology then just turn spanning tree off. I think whats happening is spanning tree is seeing a topology change and forcing a renegotiation of the tree, which has the side effect of stopping packet forwarding. You could also turn down the spanning tree timers, but there would still be a pause in the forwarding of packets Regards, Gary