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Private Interfaces are bouncing

To: nv-l@lists.tivoli.com
Subject: Private Interfaces are bouncing
From: "Thomas Kunz" <t-kunz@admin.ndis.umn.edu>
Date: Tue, 19 Sep 2000 11:34:41 -0500
Hello - 

We have NetView 5.1.2, AIX 4.3.1 and Framework 3.6.1.
We have Solaris boxes and AIX boxes that are multihomed that have at least
one public network interface and one private network interface. What I am
noticing is that on the Solaris boxes only Netview is reporting that the
private interfaces are going down and then up at about 14-15 minute
intervals. The interface will change from green to red and the trapd.log
says that it went down, however it really does not. We can continue to use
it even when Netview says that it's down?

Tue Sep 19 10:48:58 2000 kettle.oit.umn.edu        N Interface qfe1 down.
Tue Sep 19 10:48:58 2000 kettle.oit.umn.edu        N Node marginal.
Tue Sep 19 11:03:08 2000 kettle.oit.umn.edu        N Interface qfe1 up.
Tue Sep 19 11:03:08 2000 kettle.oit.umn.edu        N Node Up.

Another odd thing is that we still have a Netview/AIX box running Netview
Version 3 that also monitors these same Solaris boxes but does not see the
same bounces. Has anyone seen this before?
Thanks in advance.

Thanks and have a great day!  :-)
Tom Kunz
OIT/CCO Network & AIX Systems Support
University of Minnesota
1300 S. 2nd St.
Mpls., MN. 55454-1083
Suite 660
Phone: 612-624-8086
Fax: 612-626-1332
Email: t-kunz@cafe.tc.umn.edu

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Date:    Tue, 19 Sep 2000 16:23:50 -0400
From:    James_Shanks@tivoli.com
Subject: Re: Private Interfaces are bouncing

A Down interface in NetView is one that does not respond to ping.  You can
control how long netmon waits for a ping in xnmsnmpconf. The one thing you
haven't told us about is xnmsnmpconf.   Do the settings from your V3 machine
your V5.1.2 machine match?  What are they?
There may also be an issue with adaptive polling -- something that was added
between V3 and V5.1 and removed in 6.01 -- but there is no point going into
just yet.

James Shanks
Team Leader, Level 3 Support
 Tivoli NetView for UNIX and NT

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