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Re: how to block node-up/down traps?

To: nv-l@lists.tivoli.com
Subject: Re: how to block node-up/down traps?
From: James_Shanks@TIVOLI.COM
Date: Mon, 2 Nov 1998 14:12:00 -0500
Reply-to: Discussion of IBM NetView and POLYCENTER Manager on NetView <NV-L@UCSBVM.UCSB.EDU>
Sender: Discussion of IBM NetView and POLYCENTER Manager on NetView <NV-L@UCSBVM.UCSB.EDU>
You cannot make the ovevents.log bigger that is true.

But it plays no part in displaying current events, which are no longer read
from there on start up.  That was changed in V4, with the introduction of
rulesets.  The event window is now initially populated by reading nvcorrd's
memory cache for the last 100 events and seeing which ones match the
current ruleset for display.

If you want to see what is in the ovevents.log, you must use Event History,
not Events (Current).
And traps are not lost when this file rolls over. The only thing that is
lost is ability to view them with the Event History application.  But they
are still logged in trapd.log, which can be saved and viewed via an editor
for as long as you like. But NetView does not give you a tool to read them
in a GUI.  If you think one should be provided, then please send a note to
netview@tivioli.com.

Hope this helps

James Shanks
Tivoli (NetView for UNIX) L3 Support



giscard.fuchs@GECITS-EU.COM on 11/02/98 12:38:52 PM

Please respond to Discussion of IBM NetView and POLYCENTER Manager on
      NetView <NV-L@UCSBVM.UCSB.EDU>

To:   NV-L@UCSBVM.UCSB.EDU
cc:    (bcc: James Shanks)
Subject:  how to block node-up/down traps?





sorry for posting the same question again, but this point is crucial to me:

all events and traps are logged in ovevents.log.
the one and only way to prevent a trap going into this log is to unmanage
the node.
from there they go to trapd.log. no filtering possible.
filters and rules apply for event-display and forwarding to other systems
(nv-backup, nv-client, tec) only.
xnmtrap (nolog, nodisplay) prevents only a trap from beeing displayed,
netview internal events are logged anyway.

the events-display (max 1000) shows traps from ovevents.log (max. 2MB).
configurable via /usr/OV/app-defaults/Nvevents:
  nvevents.maxNumEvents         : 1000
  nvevents.maxLoadEvents        : 1000
  nvevents.correlationRule      : block.rs

the events-history (max 1000) shows trapd.log.
/usr/OV/app-defaults/nvela
  nvela.maxLoadEvents        : 1000

szenario:
   1500 clients are powered on every morning
   netview receives 3000 traps (node up, link up)
   nvevents.log is cycled (old ovevent.log.BAK is overwritten) as is max.
   contains 2MB
   i can't view history events as max events is 1000. (no: the UserHelpDesk
   uses webinterface and has no access to browse the file trapd.log)
   -> the status-traps from arcserve backup processes are lost, as they
   occur during the night.

is there any escape from losing vital information? (besides setting nodes
to unmanaged)

BTW
i testet following rules, and surprisingly they seem to do the same job:
   Event Stream (block) -> Trap Setting (Not equal to Specific 58916864) ->
   query database collection (origin in "server") -> Forward event
   Event Stream (pass) -> Trap Setting (equal to Specific 58916864) ->
   query database collection (origin not in "server") -> Block event
any ideas why both rules are working and filter the same traps (the
event-display is identical)?

Mit freundlichen Gruessen - Yours sincerely

Giscard Fuchs
CompuNet Berlin
System Engineering
Mariendorfer Damm 1-3, 12099 Berlin, Germany
Phone: +49 30 70785-147, Fax: +49 30 70785-130, Mobile: 0172/8212409
Internet: giscard.fuchs @ gecits-eu.com

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