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Re: [nv-l] Removing devices

To: nv-l@lists.us.ibm.com
Subject: Re: [nv-l] Removing devices
From: Paul Stroud <nvladmin@gmail.com>
Date: Tue, 18 Oct 2005 10:16:05 -0400
Delivery-date: Tue, 18 Oct 2005 15:16:36 +0100
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It should happen automatically. There are certain things however,
mentioned previously, that will cause problems. If the device itself
does NOT remove the interfaces from the MIB table, NetView will
not remove them. Also, as Leslie mentioned, if the oid_to_type file
contains a captial S for the device type:

#  S    Treat the device as if it supports secondary addresses, but does
#       not report them via SNMP in its ip.ipAddrTable.  These devices
#       have interfaces that are added, deleted, and then re-added by
#       netmon in a regular pattern.   The S option prevents the deletion
#       of the secondary interfaces.

This could also cause netmon not to delete the interfaces.


Kain, Becki (B.) wrote:

Sorry, I was not clear.  I'm not trying to remove a device, I'm trying
to remove a previously discovered interface that is no longer on the
device.  What is the recommended way of doing this?

-----Original Message-----
From: owner-nv-l@lists.us.ibm.com [mailto:owner-nv-l@lists.us.ibm.com]
On Behalf Of Paul Stroud
Sent: Tuesday, October 18, 2005 9:09 AM
To: nv-l@lists.us.ibm.com
Subject: Re: [nv-l] Removing devices

Check the snmpwalk of the device and make sure the devices are actually removed
from the mib. There are a number of devices that will not update the mib



Kain, Becki (B.) wrote:

Hello All:

If a device is already in Netview and working, and a site engineer
removes a subnet on the device, Netview alarms and shows the subnet as

down. This is correct behaviour

When Netview next demand polls it should see that the configuration of
the device has changed and remove the interface from the topology (this is how HPOV works)

Netview doesn't do this reliably, This morning working  I have removed
3 interfaces that were deleted from the Routers over the weekend but had not cleaned out of Netview.

Clearing the Cache and re demandpolling the device did not clean the
interface entry out of the database either.
Deleting the interface out on the map does work.

Is there a better way of getting the devices to auto update on the
demand poll.

-Becki Kain

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