RE: [nv-l] Node keeps coming back

Herman -

I don't understand what "go manually to the database and delete all entries related to that node" means. That would depend on lots of factors. what kind of node it was, where it was located in your network, what level of autodiscovery you were using an so on.

But deleting a node form the database, whatever it involves, will not prevent discovery if the netmon finds an entry for the device in someone else's ARP cache. After all, you can delete an entry from the database manually, but if there is a positive entry for it in the seed file, netmon will immediately find it and add it back. Deleting from the database is a one-time thing. But the seed file is used every time netmon is (re)started. And sooner or later he will find everything in your network if he can. So as long as it is there, you run the risk of it being rediscovered, no matter how many times, nor how thoroughly, you delete it.

Now you said, you delete this node and then "after awhile" it keeps coming back.. So your delete works . . . for a while . . . and then netmon re-discovers it. If you want proof of that, then delete it again and start the netmon trace and watch for it in the trace file.

So while I don't know what you did on Windows, I am saying that it does not matter. This is UNIX and I do know how to keep a device from being discovered. You put negative entries in the seed file. Those are ones which start with the exclamation point or "bang" as we call it in UNIX. You can exclude IP addresses, hostnames, or ranges. You can edit the seed file manually or use the java editor /usr/OV/bin/launch_seededit

If you have not done so before, it would be of great benefit to you, or to anyone seeking to understand how netmon works, to read about using the seed file in the NetView Configuration Guide.

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Tivoli Software / IBM Software Group

"Caballero, Herman - Herman E" <Herman.E.Caballero AT lowes DOT com>
Sent by: owner-nv-l AT lists.us.ibm DOT com

07/14/2004 09:23 AM

Please respond to
nv-l

To	<nv-l AT lists.us.ibm DOT com>
cc
Subject	RE: [nv-l] Node keeps coming back

James,

This is a device that was physically disconnected from location; I then I took it out of etc/hosts and seed file. So, you are saying that I need to also exclude in seed file, even though it was deleted from all those areas?

I remember this happening it when I was in Windows platform and I had to go manually to the database and delete all entries related to that node.

Thanks

Herman

-----Original Message-----
From: owner-nv-l AT lists.us.ibm DOT com [mailto:owner-nv-l AT lists.us.ibm DOT com] On Behalf Of James Shanks
Sent: Wednesday, July 14, 2004 9:07 AM
To: nv-l AT lists.us.ibm DOT com
Subject: RE: [nv-l] Node keeps coming back

You need to exclude the device(s) from discovery using the seed file. Otherwise they will eventually be re-discovered. Think about it.

By default, when you have autodiscovery turned on, netmon will add new devices to the map whenever it finds them. All that has to happen is for some already-discovered node to exchange data with one of the one(s) you don't want to monitor, and that will put an entry for it in the discovered node's ARP cache. When netmon does a config check it will find that entry, ping the device, and add it back to the database.

You use the seed file to both promote discovery and to restrict it. Read about it in the books. You can exclude individual nodes or IP ranges.

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Tivoli Software / IBM Software Group

"Caballero, Herman - Herman E" <Herman.E.Caballero AT lowes DOT com>
Sent by: owner-nv-l AT lists.us.ibm DOT com
07/14/2004 08:57 AM

Please respond to
nv-l

To
<nv-l AT lists.us.ibm DOT com>

cc

Subject
RE: [nv-l] Node keeps coming back

I’ve submitted this question back in June and I must have stumped everyone. But, I thought I would try again before I open a PMR.

I have a location that we do not longer monitor. So, I deleted everything from the GUI, etc/hosts, and seed file. But, for some reason it keeps reappearing on the map. I remember a while back when I was running Netview on Windows, I had to go to the object database and delete all related entries to that location from it. Do, I have to do the same in Netview 7.1.3 AIX?

Thanks,

Herman E. Caballero