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RE: [nv-l] Cisco 3750's stackwised

To: nv-l@lists.us.ibm.com
Subject: RE: [nv-l] Cisco 3750's stackwised
From: "Evans, Bill" <Bill.Evans@hq.doe.gov>
Date: Tue, 21 Feb 2006 19:04:42 -0500
Delivery-date: Wed, 22 Feb 2006 00:05:28 +0000
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Thread-topic: [nv-l] Cisco 3750's stackwised
I had a similar situation which resulted from case problems among the
various configurations including xnmsnmpconf and the hostname
resolution.  Somewhere after I added the node the case of the name
changed in the /etc/hosts file and messed things up nicely.  A0346K2
versus A0346k2 type of thing.  

With the help of some very tolerent support folks and a lot of tracing
and debugging we eliminated everything else.  It all came down to a bad
community string resolution because of the names in different mixtures
of case.  Check it out.  

Bill Evans

-----Original Message-----
From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Brett
Sent: Tuesday, February 21, 2006 5:47 PM
To: nv-l@lists.us.ibm.com
Subject: [nv-l] Cisco 3750's stackwised

Greetings all,

Just wondering of anyone else has had this issue. We have two set's of
3750's stackwised. Each set is configure with two switches setup with
the same loopback ip addr on each pair. Heres the issue:

We can snmp poll the device just fine, ping the loopback ok and the
interface goes green. However whenever netmon polls the device it drops
the loopback down when its not. From here you can demand poll the switch
and it shows the loopback down, but you can ping it back up, then do
another demand poll and it reports the interface as being up and looking
ok. It will show green until netmon does the normal timed poll then
drops it backdown again.

Anyone have any clues how to get this fixed or things I can try???

Sorry would call support but have to get the support contract reinstated
but that will take a few weeks to sort out within the company.

thanks all

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