From owner-freebsd-net Mon Mar 22 9:44:38 1999 Delivered-To: freebsd-net@freebsd.org Received: from maxwell.syr.edu (maxwell.syr.edu [128.230.129.5]) by hub.freebsd.org (Postfix) with ESMTP id 285CF14C88; Mon, 22 Mar 1999 09:44:36 -0800 (PST) (envelope-from cmsedore@maxwell.syr.edu) Received: from exchange.maxwell.syr.edu (exchange.maxwell.syr.edu [128.230.129.241]) by maxwell.syr.edu (8.9.1a/8.9.1) with ESMTP id MAA06846; Mon, 22 Mar 1999 12:31:50 GMT Received: by exchange.maxwell.syr.edu with Internet Mail Service (5.5.1960.3) id ; Mon, 22 Mar 1999 12:44:17 -0500 Message-ID: <262C3DA9BE0CD211971700A0C9B413A1CBDE@exchange.maxwell.syr.edu> From: Christopher Sedore To: "'Gary Palmer'" , "Cyril A. Vechera" Cc: julian@whistle.com, Christopher Sedore , freebsd-net@FreeBSD.ORG Subject: RE: clustering/load balancing Date: Mon, 22 Mar 1999 12:44:15 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.1960.3) Content-Type: text/plain Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > -----Original Message----- > From: Gary Palmer [mailto:gpalmer@FreeBSD.ORG] > Sent: Monday, March 22, 1999 11:46 AM > Subject: Re: clustering/load balancing > > I added a smiley to the end of the message for a reason. > There are solutions > to most of the other SPoFs that are out there today. The > biggest one still > left is actually not the one I highlighted, but rather: > > > +-------[Machine B] > | > [internet]-----[ any router ]----+-------[Machine C] > | > +-------[Machine D] > ^^^^^^^^^^^^ > > Anyone know of any way to have redudancy all the way to the > host? (i.e. 2 or > more NICs) Its going to need some daemon on the host watching > the NIC for a > heartbeat or something, then sending out an ARP invalidation > packet for the > (now failed) NIC and then another ARP for the (now working) NIC. DAS FDDI solves this nicely, right? No hub, and if your redundant switches/routers do FDDI, you've reduced the problem back to a node failure. -Chris To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message