duplicate IP addressing

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Paul Cooper

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Oct 20, 2009, 3:55:13 PM10/20/09
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I have something interesting going on with VMWare (yea I know not open
source but I tried) VS ISCSI.
I am getting a "duplicate IP address" message being reported on the
server that is provisioning the LUNS. not sure if it is a symptom or a
cause. any thoughts or anybody heard of this?
regards
Paul (long time reader 1st time caller)

Pasi Kärkkäinen

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Oct 21, 2009, 5:06:46 AM10/21/09
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On Tue, Oct 20, 2009 at 03:55:13PM -0400, Paul Cooper wrote:
>
> I have something interesting going on with VMWare (yea I know not open
> source but I tried) VS ISCSI.
> I am getting a "duplicate IP address" message being reported on the
> server that is provisioning the LUNS. not sure if it is a symptom or a
> cause. any thoughts or anybody heard of this?
>

Well.. it sounds like you have the same IP in use on multiple machines.

That's bad.

-- Pasi

Paul Cooper

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Oct 21, 2009, 9:11:27 AM10/21/09
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yes it does sound that way but I am not sure what the cause of duplicate ip addresses are...
regards
Paul

Mike Christie

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Oct 21, 2009, 1:08:43 PM10/21/09
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Paul Cooper wrote:
> I have something interesting going on with VMWare (yea I know not open
> source but I tried) VS ISCSI.
> I am getting a "duplicate IP address" message being reported on the
> server that is provisioning the LUNS. not sure if it is a symptom or a

Is the dupplicate IP on the target, and vmware is reporting that is
seeing duplicate IPs on the target? It could be that you have two ports
on the server/initiator, and when it logs into the target it is seeing
the same IP through different paths. So maybe it is just a warning about
having mupltipe paths to the same portal? Just a initial wild guess from
what I thought I understood.

Paul Cooper

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Oct 21, 2009, 1:33:29 PM10/21/09
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This is one of our customers in the midwest... they have not been too willing to come up with logs or any thing.. I think it is more user error then any real trouble. seems they just sent off a panic email stating they were getting ip configuration errors and wanted me to diagnose the issue with out giving me any real details... I was casting a wide net to see what other people thought. I think the resolution was to set the lun machine to static ip and all of the virtual machines to dhcp that seemed to correct the issue. other then that I am not sure what they did
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