From owner-freebsd-net@freebsd.org Tue Oct 6 10:26:33 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 734D09B6C28 for ; Tue, 6 Oct 2015 10:26:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 5F2C5D6C for ; Tue, 6 Oct 2015 10:26:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id t96AQXN8033791 for ; Tue, 6 Oct 2015 10:26:33 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 156226] [lagg]: failover does not announce the failover to switch Date: Tue, 06 Oct 2015 10:26:32 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: feature, needs-qa, patch X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: pvz@itassistans.se X-Bugzilla-Status: Open X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: freebsd-net@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: mfc-stable9? mfc-stable10? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Oct 2015 10:26:33 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=156226 --- Comment #21 from pvz@itassistans.se --- I would not call RSTP "simple" compared to sending a single broadcast frame (of any protocol) out on the new active NIC on a failover, especially not once you consider that to use it you have to bridge together the two NICs and make sure you to configure your costs appropriately so that you don't accidentally make your server an unintentional bridge in your network, cutting off the link you actually do want active. There's a reason other vendors have implemented this simple and elegant solution for this problem. It is because it works, and will work in any correctly functioning Ethernet network (with the exception of possible security features). Implementing this feature to the lagg failover mode does not preclude sysadmins who dislike this mode to implement other solutions such as LACP (with the other end being a MLAG) or bridging with RSTP. It does make FreeBSD usable in scenarios where sysadmins might not have much say about the network operations of the environment at large. -- You are receiving this mail because: You are the assignee for the bug.