[SNMP4J] SNMPv3 problem

[Frank Fock]

Hi,

There are several solutions for your problem:

(1) Use a different class loader for each module (should be a question
of changing a switch at your application server).
(2) Do not initialize/set the USM if it is already there.
(3) Use a different instance of the USM for each Snmp instance by using
a different MPv3 instance too.

Hope this helps.

Best regards,
Frank

torm at torm.be wrote:

>Hello dear members of SNMP4j mailing list,
>
>First, I want to wish you a merry Christmas, and a happy new year 2006.
>
>Now, I come to see you because I’ve a problem. Since 3 month now, I’ve started
>to make a SNMP Resources adapter (Specification JCA 1.5 (J2EE 1.4)). I’ve
>divided my work in 2 parts, first is the manager part (get/set/getnext,
>getbulk/walk request), and the second part is the asynchronous receive of
>trap/informs.
>
>I’m proud to say that the 2 part works! … but not together. I mean, the 2 parts
>are using the same JVM, and the I’ve a problem with SNMPv3 USM.
>I’ve seen that there is a static class, Security Model, witch seems to contains
>USM data. My problem is that I cannot have 2 instance of this class in the same
>JVM. When I deploy my listener, I created a security model, and then I’m able to
>retrieve trap and informs. But, when I make a new request, the security model of
>the listener is override and I’m not able to receive traps/informs.
>
>I’ve identify the problem, it seems that I haven’t the problem if I withdraw the
>line “SecurityModels.getInstance().addSecurityModel(usm); “
>But in this case, my listener has to be started or I get a null pointer when I
>make a snmp.getUSM() (when I try to make a request)
>
>I’ve search many times, trying to find a solution, but I’m desperate.
>
>If anyone can help me, plz, don’t keep the answer for you 
>
>Thx for the help.
>
>GDE
>
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>
>  
>


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