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Re: Linux NIC bonding

From: goran bogdanovic <goran00_at_gmail.com>
Date: Wed, 12 Dec 2007 10:28:33 +0100
Message-ID: <6d0a3ba80712120128v53cfb52diaafbb6221a0067b@mail.gmail.com>


Hi Dan,

I am not sure if 'active-passive' bonding under Linux is possible but why would you use 'active-passive' configuration? With 'active-active' you get load-balancing plus failover capability.

>It's questionable how Oracle would view that from a support perspective (if
they care at all).
As long as bonding driver does not taint the kernel, Oracle will support it.

cheers,
goran

On Dec 12, 2007 6:22 AM, Dan Norris <dannorris_at_dannorris.com> wrote:

> I'm building a cluster using Oracle Clusterware and have configured
> redundant pairs of NICs on the Linux servers using the Linux bonding module
> (active-passive). I know how to configure the Linux end of things and that's
> working fine. However, the switches used by this customer (they're Dell
> branded--not sure who really makes the guts) have been getting "confused" by
> bonding and our simple ping tests lose about 50% of the packets when we plug
> the redundant pairs into the two separate (trunked) switches.
>
> This is only peripherally related to Oracle--it's really a networking and
> server config issue, but I'm hoping that someone with more networking
> background than I have can explain what switch configuration will enable
> this to work properly. The customer has stated that this will never work
> (though I have done it before at other sites and it worked fine). The
> customer has stated that the Linux configuration must be two active NICs
> with a virtual IP and virtual MAC. I imagine that will work, but I'm not
> familiar with that configuration and I don't think Linux has native support
> for it, so it'd probably be a Broadcom or Intel software package. It's
> questionable how Oracle would view that from a support perspective (if they
> care at all).
>
> So, the question: Is there some "magical" switch setting that would
> possibly be missing in a fairly "default" configuration that might enable
> this to work properly? I figure it's a long shot asking a networking
> question on the Oracle list, but thanks for any pointers.
>
> Dan
>

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Received on Wed Dec 12 2007 - 03:28:33 CST

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