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Netview 6 and duplicated addresses discovery

To: nv-l@lists.tivoli.com
Subject: Netview 6 and duplicated addresses discovery
From: Luc BARNOUIN <luc.barnouin@thalesatm.com>
Date: Mon, 07 Jan 2002 12:38:39 +0100
Il s'agit d'un message multivolet au format MIME.
Hi forumers,

Platform :
Netview 6.02
Tru64 UNIX 4.0F

Since we migrated to Netview 6 (we were formerly using 5.1.3), we are having 
some problems for
discovering some of the network equipment's (Digital/Cabletron Hubs, repeaters, 
concentrators and
VnSwitches).
Although declared in the seed.file, the hubs and some of the repeaters and 
concentrators are not
discovered by netmon. When forcing discovery (loadhost command), they 
temporarly appear in topology
database (ovtopodump) but are removed from it when ipmap tries to create 
associated symbols. After
analysis, it seems to be linked with configuration of the OBM (Out Band 
Management) port on those
equipment, which have all been declared with the same IP@ (10.0.0.1). This port 
is used to connect a
laptop running the ClearVISN configuration tool, and it seems easier for 
hardware installation
people to have a the same @ on this port for all the equipment they want to 
connect to their laptop.
Those equipment are configured with other interfaces (on Ethernet and FDDI 
networks) so as to
directly access them from the NNM. They are discovered through those 
interfaces, but then the OBM
interface is also discovered (I have not seen any way to prevent it).
I have seen that discovery algorithm had changed between releases 5 and 6, and 
that duplicated @ was
causing some problem for the discovery, but is there any configuration mean, 
any netmon parameter
that would allow Netview 6 to cope with that?

Thanks for your help
Luc BARNOUIN

Attachment: luc.barnouin.vcf
Description: Carte pour Luc BARNOUIN





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