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Date:      Tue, 20 Aug 2002 14:56:15 -0400 (EDT)
From:      "W. Desjardins" <bill@carracing.com>
To:        <freebsd-questions@FreeBSD.ORG>
Subject:   network link failover
Message-ID:  <20020820144648.T26962-100000@mail.carracing.com>

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Hi,

I couldnt find anything in the archives specific to this question.

I was wondering if there are any network card drivers that support link
failover between either 2 cards, or 2 ports on the same card? basically, I
am looking to have a server hooked to 2 switches and have the link
failover (while maintaining IP address) failover to the new port in the
event of a dead switch.

I currently use this functionality in solaris with a daemon called
in.mpathd that uses interface aliases as floating ip's between network
interfaces. Solaris will failover and back, any links that fail for any
reason. Its nice in that besides load balancing to all interfaces in a
group, I can use any number of interfaces on any card as a group.

I know some of the multiport ethernet cards such as the intel dual-port
and dlink quad-port claim failover capabilities, but I suspect that is
only for windows. is this correct? Is there any ability in the drivers fro
these cards to accomodate failover?

Oh...and I know I can write a script in an hour or so to perform this duty
and unless I find any new info here, is what I will be doing. I just dont
care to reinvent a sub-standard wheel if a nice round one already exists
;)

Thanks,

Bill

---------------------------------------------------------
Bill Desjardins - bill@carracing.com - (USA) 305.205.8644
http://www.EtherneXt.com - High-Performance Co-Location
http://www.FreeBSD.org   - The Best OS money cant buy!


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