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Your service tools lan adapter(lan console IP should be different than your)
as400 interface IP address.

Do you have an HMC connected where you could look at your nic card. I
believe it will have 4 seperate mac addresses.

On Thu, Sep 9, 2010 at 11:47 AM, Harman, Roger <Roger.Harman@xxxxxxxxxx>wrote:

I do know that 10.100.40.11 is the address of my Service Tools Lan Adapter.
NSLOOKUP comes back that it can't be located. Our DNS server likely has no
record of it as it is not really a "system" name.

There was a 10.100.40.11 interface defined for our "normal" Ethernet line -
has been there since the install. Never had a conflict before today. Maybe
a PTF stepped on it. I know that this morning that interface failed and
drove me nuts getting into LAN console. If I tried starting it, it blew me
off completely - so I removed it. That is what has been confusing me - the
old "what was the last thing you changed?". Answer... just PTF's

The 1819 LAN adapter is a quad port and I'm wondering if it has multiple
MAC addresses. I haven't figured out how to tell.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:
midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Thursday, September 09, 2010 8:13 AM
To: Midrange Systems Technical Discussion
Subject: Re: IP Address Conflict

On my i if I do NSLOOKUP '10.10.1.211' it will return me the name of the
machine currently using that IP address. Does that help?

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From: Jack Kingsley <iseriesflorida@xxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 09/09/2010 11:06 AM
Subject: Re: IP Address Conflict
Sent by: midrange-l-bounces@xxxxxxxxxxxx



U using multiple lpar's on the same box possibly.

On Thu, Sep 9, 2010 at 10:36 AM, Harman, Roger
<Roger.Harman@xxxxxxxxxx>wrote:

This morning, after installing PTF's, on the last IPL (not starting to a
restricted state) I had an IP address conflict that gave me a whale of a
scare. We've not changed anything but the system is reporting another
MAC
address using that same IP. Only the last two digits are different. D0
vs
C0. On the Ethernet line description, I find that my system is the D0.
Not
a clue what the other is buit it is not one of our other two boxes.

I've removed the offending interface on the 520 but I can still see the
info from a PC command line via arp -a 10.100.40.11 [the dupe ip
address].
Interesting that it shows the address as being dynamic but our DHCP
server
has no lease issued. We've always used the 10.100.40.xx static for the
IBM
boxes.

Does the 520 (8203-E4A) have two distinct NIC's and/or MAC's? I know
there
is a different interface for the LAN console but I can't find any
evidence
of another MAC address.

Tracert does not show multiple hops that would help me find it or narrow
the scope.

Any other suggestions?


Roger Harman
I.T. Manager
Knott's Berry Farm
8039 Beach Blvd.
Buena Park, CA 90620
v: 714-220-5359
f: 714-220-5471
Roger.Harman@xxxxxxxxxx<mailto:Roger.Harman@xxxxxxxxxx>


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