WG: [SNMP4J] SNMP v2 - getTable()

[Frank Fock]

Hi Holger,

Yes, you can use SNMPv1 or set the maxRepetitions parameter
to 1 (which is effectively equivalent to using GETNEXT
although it uses the GETBULK PDU type though).

Best regards,
Frank

Holger Grütjen wrote:
> Hi Frank,
> 
> Is there any way to configure SNMP4J to use GETNEXT instead of GETBULK?
> 
> Regards,
> Holger
> 
>> Hi Holger,
>>
>> I would think that (3) is true. With SNMPv1 only GETNEXT
>> operations are performed to get the rows of a table.
>> With SNMPv2c GETBULK is used where more than one row
>> can be returned by the agent per response PDU.
>> In such a case, the response PDU may exceed an internal
>> limit of the command generator or (more likely) of the
>> agent (=command receiver). In such a case, the agent
>> should a response with a much elements as would fit
>> into in a PDU with maximum size. If such a response would
>> not be valid (i.e., contain less elements as the request),
>> then a tooBig error must be returned.
>>
>> A simple timeout points to a bug in the agent.
>> To workaround the bug, you can reduce the maxRepetitions
>> parameter.
>>
>> Best regards,
>> Frank
>>
>> Holger Grütjen wrote:
>>> Hi,
>>>
>>> When invoking the method TableUtils.getTable(target, oids, 
>> oid, oid1) for requesting six (or more) columns using SNMP v1 
>> everything works fine, I finally get some rows as response.
>>> But when I change to SNMP v2, then I get a timeout. This is 
>> NOT the case if I'm just requesting five columns or less, 
>> then everything works fine too.
>>> Does anyone knows the reason for that?
>>>
>>> 1) is there some kind of restriction for SNMP v2?
>>> 2) may this be a bug of SNMP4J?
>>> 3) may this be a bug of the device?
>>>
>>> Regards,
>>> Holger
>>> _______________________________________________
>>> SNMP4J mailing list
>>> SNMP4J at agentpp.org
>>> http://lists.agentpp.org/mailman/listinfo/snmp4j
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