For more info on how Netview handles duplicate IP entries, seen the help
for
netmon. One thing to keep in mind is that netview will not add a node, such
as
a workstation, that has a duplicate IP address, but will give the event.
These
events can be useful indicators of potential problems. On the other hand
you
won't see any if you are excluding workstations from discovery. So
duplicate
address detection is available, but you have to be willing to discover
every
node. For duplicates that happen after discovery, watch for those
'different
link' messages. Sometimes those indicate that a different device has taken
over the address of a node you already discovered.
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager
---------------------- Forwarded by Leslie Clark/Southfield/IBM on 04/20/99
05:09 PM ---------------------------
Bill Clifton <bill_clifton AT INS DOT COM> on 04/20/99 04:12:15 PM
Please respond to Discussion of IBM NetView and POLYCENTER Manager on
NetView <NV-L AT UCSBVM.UCSB DOT EDU>
To: NV-L AT UCSBVM.UCSB DOT EDU
cc: (bcc: Leslie Clark/Southfield/IBM)
Subject: Re: Duplicate IP msg
Ken,
My experience with NetView dup ip msgs has been that when netmon does a
config
check (by default every 24 hours) and it finds interface tables with
duplicate
addresses it will send the traps you mention. In my case, it was because
someone
previously had entered numerous router interface addresses separately into
the /etc/hosts file for the same router. NetView (5.0 in my case) sends
the duplicate ip traps.
Demand poll will reproduce the problem but not in your case, since NetView
shows
the device as down. If you can get a look at the arp cache on the local
router for
the HP system, see if the mac address is consistent or if it changes when
you ping it -if
it's pingable, and you can begin to track it down. on cisco, the command is
'sh arp', on Bay routers 'sho ip arp' if you have either of those router
types.
hth,
Bill
At 01:08 PM 4/19/99 -0400, you wrote:
>I've got an HP3000 that's reporting a duplicate IP address at the console.
>Netview is reporting (source = netmon) that the HP interface and node are
>down. I'm not sure which one is right. In the past, I have recieved
traps
>from netmon reporting dup ip's. What mechanism does Netview use to detect
>dup's and are there any config options?
>
>TIA
>
>
____________________________________________________________________
Bill Clifton 20350 Ventura Boulevard, Suite 230
Network Systems Consultant Woodland Hills, CA 91364
International Network Services Phone 818-226-1230
Fax 818-226-1233
Alpha Pager: 1-800-467-1467
Email: bill_clifton AT ins DOT com
____________________________________________________________________
"If people don't want to come out to the ballpark, nobody's going
to stop them " - Yogi Berra
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