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>I have a customer running ASE on a pair of 4100's and he has a
>question/concern. It seems as though (from his description) that we have no
>method to fail over to a redundant network interface card in ASE. For
>example, he wants to be able to have n+1 network cards in his cluster members
>and if a NIC or its connection dies or becomes inaccesible for any reason,
>have ASE (or whatever service we can provide) fail over to the other NIC.
>
What you describe we refer to as "net RAIN". This is a project
coming in a future release of Digital UNIX.
Some issues for you to understand:
A major subnet failure may not be correct by netrain.
If you need netrain sooner, you should begin to prepare an
ECP (Engineering commitment process) to request it prior to release.
The networking product manager in Digital UNIX is Steve Leblanc
>According to the customer, AIX can fail over the MAC address as well as the
>IP address so it works on their HA.
>In our case, if a NIC shuts off, even if
>we have no other problems on the box, and another NIC exists in the box, ASE
>will fail over the applications - an unacceptable situation except under much
>more severe circumstances (like, the box went down, etc..)
This is does not have to be the case. You can configure ASE to continue
to use the remaining adapters (not with the same mac address), but it
can be setup to not failover, and change routes/aliases..
>
>Any comments? Is there some way to do this that he (and I) are overlooking?
>
>Regards,
>
> -BAP
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