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Re: One device reported different Link Address to another

To: nv-l@lists.tivoli.com
Subject: Re: One device reported different Link Address to another
From: Scott Wilson <swilson@RPM.COM>
Date: Mon, 28 Sep 1998 07:55:30 -0400
Organization: RPM Consulting
Reply-to: swilson@rpm.com
Sender: Discussion of IBM NetView and POLYCENTER Manager on NetView et alia <NV-L@UCSBVM.UCSB.EDU>
There is an "undocumented" option for netmon to turn this check off.  We
were seeing a ton of them and wanted them stopped, so called support.  I was
told that this was valid in NV 5.0, 5.1 AIX and NT (I didn't ask about
Solaris,...).
# ovstop netmon
# cd /usr/OV/lrf/netmon.lrf
# edit /usr/OV/lrf/netmon.lrf (add -x option)
# ovdelobj netmon.lrf
# ovaddobj netmon.lrf
# ovstart netmon

However - once I did this, I could no longer modify netmon settings using
the Tivoli Desktop or the AIX Smit since it does not know what the -x is, it
will not open the lrf file (small inconvenience).

HTH,

Scott

Simon Long wrote:

> Hi,
>
> I am experiencing the same problem as was involved in the following
> dicussion which took place some time back:-
>
> >hi,
> >I get follownig error-message permannently:
> >[Routername...] reported differenet Link Address than obtained from
> >[Switchname...]
> >can anybody say, what it is ?
>
> >thanks
> >Esfandiar Tabari
> >Network Operating Center Hugo Boss Germany
> >Tel. 0049-7123-94 2581
> >Fax: 0049-7123-94 82581                  email:
> >esfandiar_tabari@hugoboss.com
>
> >Hi,
>
> >I had the same problem.
> >The switch was in a HUB with several other switches and bridges and had
>
> >only one IP address. This address was used for every HUB components.
> The
> >routers want to talk to the switch. So they send an ARP request for
> getting
> >the MAC address for the switchs IP address. The switch answers to the
> IP
> >address and propagates the MAC address of the component which is
> nearest to
> >the router. So the router has in his ARP table the MAC address of the
> >nearest component. Same thing for the NetView machine. The router and
> the
> >NetView were connected to different switches. So the router and the
> NetView
> >had different MAC addresses for the same IP address in the ARP table
> and
> >that is why I got that message.
>
> >Hope this helps
>
> >Mario
>
>  >Nachricht von:                             (Embedded image moved to
> file:
>
> PIC13597.PCX)
>  >Esfandiar_Tabari
>  >28
>
> Does this mean I just disregard this event or is there something I can
> do?   It seems to occur a lot on our network.
>
> Thanks,
>
> Simon Long
> Nettrack Technical Solutions Pty Ltd



--
-----------------------------------------------------------
Scott Wilson                         Email: swilson@rpm.com
Network Management Consultant        Pager: 800-506-7348
RPM Consulting, Inc.
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