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Re: [NV-L] Ruleset Editing Questions

To: Tivoli NetView Discussions <nv-l@lists.ca.ibm.com>
Subject: Re: [NV-L] Ruleset Editing Questions
From: James Shanks <jshanks@us.ibm.com>
Date: Tue, 24 Oct 2006 10:49:58 -0400
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The answer to your first question is yes. In order to make a trap have the category "Log Only", you have to build a trap definition for it in trapd.conf. If you have MIBs which define these traps, then you can use mib2trap to help you do that. The current default in mib2trap is "Log Only".

But mib2trap is not the easiest tool in the world to use so don't feel bad about having to ask questions about it if you need to.

The answer to your second question is that nvcorrd is running different rulesets for different users. Each user can run only one at a time. Most likely the forwardall.rs is being run for an event window. What happens in the processing of each ruleset is independent of the others. If you run the full trace (nvcdebug -d all) you can see that.

ESE.automation usually has nothing to do with TEC forwarding, unless you are doing it using your own postemsg scripts. The internal TEC adapter is part of nvserverd. What he gets is determined by the ruleset listed in /usr/OV/conf/tecint.conf, not ESE.automation.

If you uncomment the line NvserverdTraceTecEvents=YES in tecint.conf, and reload it, either by restarting the daemon or using nvtecia -reload, then you will get /usr/OV/log/nvserverd.log, which will show what ruleset nvserverd currently registered, and what events he is sending to TEC, as well as how he formatted them. The only thing that won't be in the nvserverd.log are the events or slots added by the TEC State Correlation Engine, so you will not see the fqhostname slot for example.

But the point is that between the nvcorrd.alog/blog when the full trace is on (nvcdebug -d all) and the nvserverd.log, you can track just what events your ruleset passes to nvserverd and just how nvserverd formats them for TEC before they get sent. That should give you everything you need to track down a problem when you have one.

However, I think I can save you the trouble by looking at just what you have posted already. Your nvcorrd.alog says
+  +  +  EventAttributes (Attr='EnterpriseID'  ne
Value='.1.3.6.1.4.1.9.1.502')

The proper OID value would be just Value='1.3.6.1.4.1.9.1.502' without the leading dot. I am guessing that when you built the ruleset you typed in the OID value rather than using the select button and pulling it out of trapd.conf. Doing it the latter way would prevent you from making a mistake, whish is all the more reason to define your important traps in trapd.conf.

HTH,

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp
Inactive hide details for sean.lawrence@cantire.comsean.lawrence@cantire.com


          sean.lawrence@cantire.com
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          10/24/2006 09:56 AM
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Re: [NV-L] Ruleset Editing Questions

Ok I ran the "nvcdebug -n" command. The output is as follows

2006/24/10 09:46:38   CorrelationDef.C[562] :   Current running
correlation:
CorrelationDefinition(0x30033b08)
+  RootDnode
+  +  RuleSet forwardall.rs
+  +  +  Forward(19) Corrnode application=0x303d2888
+  +  RuleSet test.rs
+  +  +  EventAttributes (Attr='EnterpriseID'  ne
Value='.1.3.6.1.4.1.9.1.502')
+  +  +  +  EventAttributes (Attr='Origin'  ne  Value='42.231.8.3')
+  +  +  +  +  EventAttributes (Attr='Origin'  ne  Value='42.2.1.12')
+  +  +  +  +  +  EventAttributes (Attr='Origin'  ne  Value='42.2.1.13')
+  +  +  +  +  +  +  EventAttributes (Attr='Origin'  ne  Value='0.0.0.0')
+  +  +  +  +  +  +  +  Forward(130) Corrnode application=0x30062d18

I do not know why the forwardall.rs is being loaded. The ESE.automation
file is as follows

#This file should contain a list of filenames
#that will be autmatically started by actionsvr.
#Each rule set name is on a separate line; the pund sign
#indicates a comment line.
#An example line, with the name commented out) is below:
#your_ruleset_here.rs

Am I correct in assuming that the forwardall.rs is forwarding everything
before the test.rs even gets a look at it?



Sean Lawrence
Systems Automation
Ext 5728




James Shanks <jshanks@us.ibm.com>
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10/24/2006 09:16 AM
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       Subject:        Re: [NV-L] Ruleset Editing Questions


If you use xnmtrap and set the trap to "Log Only" It will not be sent to
TEC nor display in your event windows but it will be kept in trapd.log so
that you can gauge how many you are getting. You can also set the trapd to
"Don't Log or Display" and this will keep it from the log as well, but
then you'll have no way of knowing what's going on if start having a
performance problem because too many of these traps are arriving.

Cisco devices are highly configurable. You usually can configure just the
traps you want and even the frequency that they are sent. Perhaps you
should talk to your network guys about that and solve the problem at the
source. Remember that getting a lot of unwanted traps isn't just a
nuisance. It's a performance issue, not just for NetView, but for everyone
else on the same subnet. That's their potential bandwidth you are eating
and throwing away.

As for your ruleset, I'm not sure what it is supposed to say. Greater than
or less than the OID? Why not just "not equal to" ?

But in any case you can tell exactly what ruleset you are running in two
ways. If you are keeping an nvserverd.log, then the name will be in there,
as will evidence of the reload. But whether you are or are not keeping the
nvserverd.log, you can issue "nvcdebug -n" which will cause nvcorrd to
write out in detail to his log what rulesets he is running. You can see
the contents of the ruleset there. You can also debug this way by sending
"nvcdebug -d all" and then observing what happens to each event as it is
evaluated. Everything between the eyecatcher "Received a trap" and
"Finished with the event" is nvcorrd processing that event.

James Shanks
Level 3 Support for Tivoli NetView for UNIX and Windows
Network Availability Management
Network Management - Development
Tivoli Software, IBM Corp
sean.lawrence@cantire.com


sean.lawrence@cantire.com
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10/24/2006 08:13 AM

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[NV-L] Ruleset Editing Questions





I am trying to set up some rules to filter out traps coming for
Ciscoworks. We are getting way to many now that the network guys have
turned it on.

Is there a way to simply drop traps that have not been defined in the
trapd.conf? I do not want to keep them in Netview or forward them to TEC.

On a side note I am having trouble setting up simple rules.

I am receiving a trap from Ciscoworks with the OID of 1.3.6.1.4.1.9.1.502
I do not want this forwarded to TEC

In the ruleset defined in tecint.conf I created an Event Attributes rule.
It looks like this:

Event Stream -> (EnterpriseOID <>  1.3.6.1.4.1.9.1.502) -> Forward

I ran the nvtecia -reload command to reload the ruleset and I am still
getting these forwarded. Is there something else required to load modified

rulesets?

Sean
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