[SNMP4J] Persistency in SNMP4J agent

[Frank Fock]

Hi Yaron,

Yaron Reichert wrote:
> Hey Frank , 
> 2 questions regarding snmp4j-agent:
>  
> 1)       TestAgent testAgent1 = new TestAgent(new File("SNMP4JTestAgentBC.cfg"),
>                                            new File("SNMP4JTestAgentConfig.cfg"));
>  
> what the "SNMP4JTestAgentBC.cfg" , "SNMP4JTestAgentConfig.cfg" are used to ?

The first stores the boot counter needed for SNMPv3.
The second is a file to store persistent managed object
values.

>  
> i read that the first is something related to "boot-counter" - what exactly is it ?

It counts how often the agent has been rebooted.
If you do not count reboots, a manager that contacted
the agent before the last reboot, cannot continue
to contact the agent after the next reboot (because
of message is then out of time-window).

>  
>  
> 2) i wonder if the agent has built-in persistency ? (does it save the values to some file/s when shutting down the agent ?)

Yes. When shutting down the agent with Ctrl-C (SIGTERM)
it tries to write all persistent data to the specified
config file.

Best regards,
Frank