[SNMP4J] Do I need a ProxyForwarder implementation?

[Frank Fock]

Hi Alan,

Yes, all you need for that is already included
in SNMP4J-Agent and needs just to be configured
via SNMP. The SNMP-TARGET-MIB, SNMP-COMMUNITY-MIB
and SNMP-PROXY-MIB are involved. The corresponding
RFCs and MIB description should give you all details.

Best regards,
Frank

Alan McSherry wrote:
> Hi Frank,
> 
> Thanks for the reply. 
> 
> Do I understand that I could implement a simple ProxyForwarder which
> happily forwards all requests to and returns all responses from agent1
> based on the community string "agent1" (for example) and uses agent2 to
> service requests made with the community string "agent2"? 
> 
> I think that would solve my problem nicely. 
> 
> Alan.
> 
> On Fri, 2007-04-06 at 15:07 +0200, Frank Fock wrote:
>> Hi Alan,
>>
>> You will not be able to proxy requests based on the OID
>> and still be SNMP standard compliant when your systems
>> allow SET requests, because SNMP does not implement a
>> two-phase-commit (2PC).
>>
>> The standard compliant ProxyForwarder of SNMP4J
>> forwards requests based on community, context, and/or
>> context engine ID.
>>
>> If you still want to forward subrequests (!= messages)
>> based on OIDs the you will have to implement something
>> that similar like the SNMP4J-AgentX API but uses SNMP
>> as protocol.
>>
>> Please verify carefully whether the AdventNet solution
>> is standard conform and works in a real life scenario.
>>
>> Best regards,
>> Frank
>>
>> Alan McSherry wrote:
>>> Hi all,
>>>
>>> I have a situation whereby two independent vendors are amalgamating
>>> their products onto one hardware platform. 
>>>
>>> Each has it's own (non AgentX master/sub) SNMP agent. 
>>>
>>> I would like to run a proxy agent on the default SNMP port and run each
>>> of the other agents on it's own port so that when an SNMP request
>>> arrives at the standard port I can switch on the OID and forward the
>>> request to the relevant SNMP agent. 
>>>
>>> It seems that this is a job for a ProxyForwarder? 
>>>
>>> Can anyone offer any pointers to examples of ProxyForwarder
>>> implementations? (I've seen one in a previous months posting)
>>>
>>> Does anyone know of an existing (commercial or otherwise) solution to
>>> this dilemma? I'm about to check out AventNETSnmpUtilities but that's
>>> the only option I've found so far. 
>>>
>>> Any help greatly appreciated.
>>>
>>> Alan.
>>>
>>>
>>> _______________________________________________
>>> SNMP4J mailing list
>>> SNMP4J at agentpp.org
>>> http://lists.agentpp.org/mailman/listinfo/snmp4j
> 

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