[SNMP4J] Counter32 with wrong value

[Owen, Philip]

Hi Frank,

I have got to the bottom of this. I had used pdu.setType(PDU.GETNEXT)
rather than pdu.setType(PDU.GET), and was hence getting the next record.
Understandable really :-)

I presume that the console tool must have a similar bug, but you are in
a far better position than I to determine if that really is the case.

Thanks again for looking at this.

Phil.

Owen, Philip wrote:
> 
> Hi Frank,
> 
> Thanks for the response.
> 
> I thought I was going mad there. However, it seems that the 
> value is correct, but the wrong table row is being returned. 
> The request is for 363251293, but the response is from 
> 363251294. I had not noticed that before, only when you 
> mentioned it based on the output below.
> 
> If I use snmpget for 363251294 I get the same value as 
> SNMP4J.exe returns when asked for 363251293.
> 
> Thanks,
> 
> Phil. 
> 
> Frank Fock wrote:
> > 
> > Hi,
> > 
> > you get different results, because you request different objects.
> > 
> > Best regards,
> > Frank
> > 
> > Owen, Philip wrote:
> > > Hi,
> > >  
> > > I am trying to retrieve a Coutner32 value using an SNMP get with 
> > > SNMP4J, but am getting the wrong value. Whether I use the
> > code I wrote
> > > (based on the examples in the documentation), or using the SNMP4J 
> > > executable I still get the same result.
> > >  
> > > The snmpget command and the Net::SNMP Perl library both
> > agree on what
> > > the value should be, although if memory serves, they both
> > use the same
> > > back-end libraries.
> > >  
> > > SNMP4J:
> > > C:\snmp4j\tool>SNMP4J.exe -c public -v 2c router
> > > 1.3.6.1.4.1.4874.2.2.35.1.4.3.1.1.2.363251293
> > > 19-Jun-2007 10:17:52 org.snmp4j.log.JavaLogAdapter log
> > > INFO: UDP receive buffer size for socket 192.168.4.135/0 
> is set to: 
> > > 8192 Received response after 94 millis Response received with 
> > > requestID=500261284, errorIndex=0,
> > > errorStatus=Success(0)
> > >  
> > > 1.3.6.1.4.1.4874.2.2.35.1.4.3.1.1.2.363251294 = 6746487
> > >  
> > > snmpget:
> > > [user at hostname ~]$ snmpget -c public -v 2c -On router
> > > 1.3.6.1.4.1.4874.2.2.35.1.4.3.1.1.2.363251293
> > > .1.3.6.1.4.1.4874.2.2.35.1.4.3.1.1.2.363251293 = Counter32: 
> > 473269566
> > >  
> > > I can see no reason why these values are so different. The OID in 
> > > question is row index 363251293 of a table (no, they don't
> > start at 1
> > > :-) ) if that matters.
> > >  
> > > It does not seem to affect all entries on this table, 
> most of them 
> > > come through okay, but this is the biggest value I have 
> seen so far.
> > > 
> > > I tried getting SNMP4J.exe to retrieve using getTable() but
> > cannot get
> > > it to return the right row index. I know that is a separate
> > issue, but
> > > thought it might help to see what value it obtained that
> > way. Maybe I
> > > am just not specifying the lower and upper bounds properly.
> > >  
> > > Thanks,
> > >  
> > > Philip.
> > > 
> > > 
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