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Date:      Mon, 22 Mar 1999 12:44:15 -0500
From:      Christopher Sedore <cmsedore@maxwell.syr.edu>
To:        "'Gary Palmer'" <gpalmer@FreeBSD.ORG>, "Cyril A. Vechera" <cyril@main.piter.net>
Cc:        julian@whistle.com, Christopher Sedore <cmsedore@maxwell.syr.edu>, freebsd-net@FreeBSD.ORG
Subject:   RE: clustering/load balancing 
Message-ID:  <262C3DA9BE0CD211971700A0C9B413A1CBDE@exchange.maxwell.syr.edu>

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> -----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


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