Calvin, list,

frankly I don't see how to do this with Event Rules. AFAIK, you can set 
event rate rules on events on the same model, but not across models 
(that's why we call Condition Correlation "cross model correlation", I 
guess). I have a similar problem, but it goes a bit further, since I want 
to suppress alarms until there are in fact two alarms - and these alarms 
should be compacted into one...

Using SPM, I have two Cisco routers testing the same host for some TCP 
port responsiveness (or for that matter anything else those two routers do 
tests against). Those routers are in two completely differing corners of 
my network, and so it happens that one router runs into timeout while the 
other doesn't. That means there is one alarm which is in fact bogus, 
because the feature the router is testing is in fact up and running. One 
might correlate this in mind - "One alarm is okay, two alarms are bad" -, 
but it would be very helpful to use automation to let an alarm rise if and 
only if there are parallel alarms for the same test from both test 
routers.

One way could be to create a Correlation Domain for each test (which could 
mean driving some hundred domains!) and use the event count feature to 
suppress the SPM test's alarms and assert an alarm on the domain itself. 
This, in fact, only solves my "two alarms for one problem" question but 
does not suppress the alarm if there is only one, which is my main 
problem.

Freundliche Grüße / Best regards

Christian Fieres

Mainova AG
Planung und Betrieb Infrastruktur (M3-ON2)
Service Operation Center
Solmsstraße 38
60623 Frankfurt

Telefon / Phone (069) 2 13-2 36 17
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E-Mail [email protected]




Von:    "Calvin Lane" <[email protected]>
An:     "spectrum" <[email protected]>
Datum:  16.11.2011 16:54
Betreff:        RE: [spectrum] Spectrum 9.2 Condition Correlation Editor



Hello Dan,
 
I would probably lean towards Event Rules and not Condition Correlation 
Editor.  Depending on the how the events from those two servers would come 
in, you could create an ?event series?, ?event counter?, or ?event rate? 
rule.  This would be done in the Event Configuration Editor.  Let me know 
if you have any questions. 
 
Calvin
 
From: Tadysak, Dan E [mailto:[email protected]] 
Sent: Wednesday, November 16, 2011 9:53 AM
To: spectrum
Subject: [spectrum] Spectrum 9.2 Condition Correlation Editor
 
I have gone thru the Condition Correlation guide and I am still very 
confused on how to do something I think should be very simple so I need 
help 
or more examples.
 
I have 2 servers that will send the same trap. However, I want only one 
alarm. The reason is that it is a fault tolerant EMC system and if either 
server is down I need to make sure I still get the alarm but I don?t want 
two of them. I have been trying to figure out how to use the CCE but the 
docs don?t have a good example. 
 
Anyone have any examples they can share or offer any suggestions?
 
Thanks,
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