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> Michael McConnell wrote:
>
> You want to take advantage of the DUAL NICS in the real server to provide
> additional redundancy.
> Unforchunately the Default GW issue comes up....
I assume you have boxes each with 2 NICs and you want the
2 NICs to be redundant. This is a reasonable thing to expect
but I can't see any easy way to do it. The nearest
related things are
1. channel bonding, where multiple NICs on a machine have the
same IP and MAC address and are used for higher throughput.
I read through 2yrs of messages on the beowulf mailing list
about this last night and couldn't see anywhere where people
allow this sort of setup to run after one card has failed.
I presume it's not doable.
2. vrrpd. This is for redundancy of boxes where the NICs are
on different machines. This is not your case.
Having 2 NICs on a machine with one being spare, is relatively
new. No-one has implemented a protocol for redundancy AFAIK.
The next question then is how often does a box fail in such
a way that only 1 NIC fails and everything else keeps working?
I would expect this to be an unusual failure mode and not
worth protecting against. You might be better off channel bonding
your 2 NICs and using the higher throughput (unless you're compute
bound).
Joe
--
Joseph Mack PhD, Senior Systems Engineer, Lockheed Martin
contractor to the National Environmental Supercomputer Center,
mailto:mack.joseph@xxxxxxx ph# 919-541-0007, RTP, NC, USA
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