[SNMP4J] Synchronous v1 GET not getting the result

[Frank Fock]

Hi Deon,

I guess that you have forgotten to call Snmp.listen(), right?

Best regards,
Frank


Deon van der Merwe wrote:

> Hi,
>
> I am sending a SNMP v1 GET command to a cisco router.  On tcpdump
> I see the request go out and the response coming back.  But I do
> not get the actual response PDU.
>
> Here is (more or less) my code.  It is in the second to last line
> that I always get a "null".
>
>     mCommunityTarget.setCommunity(new 
> org.snmp4j.smi.OctetString(mCommunityName));
>     mCommunityTarget.setAddress(new 
> org.snmp4j.smi.UdpAddress(java.net.InetAddress.getByName(mAddress), 
> mPort));
>     mCommunityTarget.setRetries(1);
>     mCommunityTarget.setTimeout(4096);
>     mCommunityTarget.setVersion(org.snmp4j.mp.SnmpConstants.version1);
>
>       org.snmp4j.Snmp vSnmp = new org.snmp4j.Snmp(new 
> org.snmp4j.transport.DefaultUdpTransportMapping());
>
>           for (int i = 0; i < mVariableLookup.size(); ++i) {
>             OID vOIDHolder = (OID) mVariableLookup.get(i);
>             org.snmp4j.PDU vPDU = new org.snmp4j.PDU();
>             vPDU.add(new org.snmp4j.smi.VariableBinding(new 
> org.snmp4j.smi.OID(vOIDHolder.mObjectID)));
>             vPDU.setType(org.snmp4j.PDU.GET);
>             mLogger.debug("snd: " + vPDU);
>             org.snmp4j.PDU vResponsePDU = vSnmp.sendPDU(vPDU, 
> mCommunityTarget);
>             mLogger.debug("rcv: " + vResponsePDU);
>           }
>
> Here is a log:
> ---------------------------------
> 2005-01-11 17:03:59,759 Thread-com.truteq.counter.HostResources DEBUG 
> root - snd: GET[reqestID=0, errorStatus=0, errorIndex=0, 
> VBS[1.3.6.1.2.1.2.2.1.16.4 = Null]]
> 2005-01-11 17:03:59,760 Thread-com.truteq.counter.HostResources DEBUG 
> org.snmp4j.transport.DefaultUdpTransportMapping - Sending message to 
> 196.26.229.249/161 with length 44: 30:2a:02:
> 01:00:04:05:74:74:63:6f:6d:a0:1e:02:04:49:f4:4d:ba:02:01:00:02:01:00:30:10:30:0e:06:0a:2b:06:01:02:01:02:02:01:10:04:05:00 
>
> 2005-01-11 17:03:59,760 Thread-com.truteq.counter.HostResources DEBUG 
> org.snmp4j.Snmp - New pending request with 
> handleorg.snmp4j.mp.PduHandle at 49f44dba
> 2005-01-11 17:04:03,869 Timer-3 DEBUG 
> org.snmp4j.transport.DefaultUdpTransportMapping - Sending message to 
> 196.26.229.249/161 with length 44: 
> 30:2a:02:01:00:04:05:74:74:63:6f:6d:a0:1e
> :02:04:49:f4:4d:ba:02:01:00:02:01:00:30:10:30:0e:06:0a:2b:06:01:02:01:02:02:01:10:04:05:00 
>
> 2005-01-11 17:04:03,869 Timer-3 DEBUG org.snmp4j.Snmp - running 
> pending request with handleorg.snmp4j.mp.PduHandle at 49f44dba
> 2005-01-11 17:04:07,979 Thread-com.truteq.counter.HostResources DEBUG 
> root - rcv: null
>
> -Deon
> _____________________________________________________
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