Re: clear traps

Dave Shield wrote:

>On Wed, 2005-10-05 at 11:06 +0200, Vishwanath Kalbagilmath wrote:
>  
>
>>By clear trap, I mean:
>>
>>For instance, if there are some traps generated for say "link down"
>>with Severity set to Critical/Major/Minor etc... every few min, after
>>sometime when the link is up, a trap is generated for "Link up" with
>>severity set to "Clear". This trap should clear all the previous link
>>down traps.
>>    
>>
>
>Thanks - that's a useful clarification.
>
>  
>
>>As I understand this is more related to trap viewer utility,
>>    
>>
>
>Correct.  SNMP traps have no concept of "severity".
>That's purely a function of (some) trap receiver applications.
>
>As far as SNMP is concerned, a trap is simply a notification of
>some event or condition (perhaps with some associated information).
>It's purely up to the receiving application as to how they regard
>it - whether it's seen as an error (critical/major/minor), a
>warning, part of normal operation, or whatever.
>
>
>  
>
>> but all I wanted to know is if there is any standard way of doing it.
>>    
>>
>
>I don't believe so.
>The whole idea of "severity" is not really part of standard SNMP,
>so the idea of "clear" traps isn't standardised either.
>
>I think you'd need to consult the documentation for your trap
>receiver software, and the relevant MIB files, to decide how
>best to implement such behaviour.
>
>Dave
>  
>
I don't know how widespread this is, but I've dealt with a customer who
wants all traps to report the entrance or exit of a state.  The terminology
they use is Set and Clear traps for a Condition on the device.  They also
want the trap varbind list to include a severity, though there is no
standard way to do this so they would have to write code to interpret it. 
Another way to associate severity with a trap, if the receiver is using
something like HP Openview, is to include a comment
in the trap's NOTIFICATION-TYPE block like this:

mytrap NOTIFICATION-TYPE
   OBJECTS ...
   STATUS   ...
   DESCRIPTION "  ...  "
-- #SEVERITY MAJOR
   ::== { traps  1 }

Openview will interpret this and report the trap with the appropriate
color in the event log after it loads your MIB.




-------------------------------------------------------
This SF.Net email is sponsored by:
Power Architecture Resource Center: Free content, downloads, discussions,
and more. http://solutions.newsforge.com/ibmarch.tmpl
_______________________________________________
Net-snmp-users mailing list
[email protected]
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/listinfo/net-snmp-users