[SNMP4J] Strange problem with SnmpV3 traps.

[Xinxin Song]

Hi Frank,

Could you give more details about how to make the agent increment its 
bootcounter, and how this would cause the problem that the V3 traps not 
being received?

Thanks a lot!
Xinxin


----- Original Message ----- 
From: "Frank Fock" <fock at agentpp.com>
To: "Xinxin Song" <xsong at profilium.com>
Cc: <snmp4j at agentpp.org>
Sent: Thursday, November 01, 2007 3:54 PM
Subject: Re: [SNMP4J] Strange problem with SnmpV3 traps.


> OK, then the "agent" is probably not incrementing its bootcounter.
>
> Best regards,
> Frank
>
> Xinxin Song schrieb:
>> Hi Frank,
>>
>> I am pretty sure the problem is not caused by the OS doesn't allow 
>> resuing a port shortly after it is closed. Because when I keep the 
>> SnmpV3Receiver running, and restart the SnmpAgentCaller one hour after 
>> the problem occurs, I still don't get anything on the Receiver side. But 
>> if I terminate the SnmpV3Receiver then re-start it, and restart the 
>> SnmpAgentCaller, it works fine for the first 4-5 rounds.
>>
>> Thanks for help.
>> Xinxin
>>
>>
>> ----- Original Message ----- From: "Frank Fock" <fock at agentpp.com>
>> To: "Xinxin Song" <xsong at profilium.com>
>> Cc: <snmp4j at agentpp.org>
>> Sent: Thursday, November 01, 2007 2:38 PM
>> Subject: Re: [SNMP4J] Strange problem with SnmpV3 traps.
>>
>>
>>> Hi Xinin,
>>>
>>> What you are observing is normal. On some OS, reusing
>>> a port shortly after another application has closed it,
>>> is not possible. Instead of using a defined port, use
>>> port "0" to get an arbitrary free port.
>>>
>>> Best regards,
>>> Frank
>>>
>>> Xinxin Song schrieb:
>>>> Hi Frank,
>>>>
>>>> I wrote a class SnmpAgentV3.java (singletion), actually it is not 
>>>> really a Snmp agent cause its main function is to send V3 traps.  And I 
>>>> wrote a class SnmpV3Receiver.java to receive and printout the V3 traps 
>>>> (Please see the attched files). Then I wrote a SnmpAgentCaller.java to 
>>>> call the SnmpAgentV3 to send out V3 traps in different ways.
>>>>
>>>> The strange problem is: If I get a instance of SnmpAgentV3.java then 
>>>> use it to send a few traps then close it and re-get the same instance 
>>>> and then send another few V3 traps, I can repeat this close and 
>>>> re-opening thing for a few times, and the SnmpV3Receiver shows all the 
>>>> traps. But after 4-6 rounds (in a few minutes), the SnmpV3Receiver 
>>>> stops showing anything altough the SnmpAgentCaller is still keeping 
>>>> sending traps.  If I don't close the instance and use the same instance 
>>>> to send V3 traps, I can do it without problem for one hour.
>>>>
>>>> Have I done anything incorrectly there?
>>>>
>>>> Thanks,
>>>> Xinxin
>>>>
>>
>
>
>