You're right. I've also tested the same version on Linux and caching
persists :-( If somebody knows a workaround/fix for this I'd be also
interested.

Cheers,
-Roman

Alexandre Pashai wrote:
> ...I've tested this feature with the latest version of net-snmp running
> on Solaris 9:
> 
> bash-2.05# /usr/local/sbin/snmpd -version
> 
> NET-SNMP version:  5.2.1.2
> Web:               http://www.net-snmp.org/
> Email:             [email protected]
> 
> 
> ...and I confirm that 'pass' directive caches data for about 30 seconds.
> 
> Here is a sample in my snmpd.conf:
> 
> pass .1.3.6.1.4.1.92400.1.6.1.1 /etc/snmp/sh/ApplicationStatus.sh
> 
> Regards,
> --Alexandre
> 
> Roman Medina-Heigl Hernandez wrote:
> 
>> I have the same problem too. Snmpd seems to refresh cache when it
>> receives a SET request, which seems logical to me. The problem happens
>> when you have other external methods of updating values which should be
>> returned by Snmpd (for instance, if you have data store on a database,
>> and want Snmpd to return its values; if database is updated Snmpd
>> doesn't notice the change and cache is not refreshed).
>>
>> I haven't tested it but newer versions doesn't perform caching. At least
>> according to the Faq:
>>
>> http://net-snmp.sourceforge.net/docs/FAQ.html
>> ...
>> What's the difference between 'exec', 'sh' and 'pass'?
>> -----------------------------------------------------
>> ...
>> Note that with the 4.2.x and 5.0.x lines, return values are cached
>>  within the agent for 30 seconds, rather than invoking the command
>>  for every request.  This does not hold for the 5.1.x agent.
>>
>> Regards,
>> -Roman
>>
>>
>> Alexandre Pashai wrote:
>>  
>>
>>> hi all,
>>>
>>> thep ass-through feature of net-snmp works quite well.
>>> But, it seems to cache data for 30 seconds while i expect it to have a
>>> "real-time" behavior...
>>>
>>> Is it possible for net-snmp to exec the script on each snmpget request ?
>>>
>>> Thanks for answers.
>>>
>>> Alexandre
>>>   
>>
>>
>>  
>>
> 


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