[SNMP4J] Synchronous v1 GET not getting the result

Deon van der Merwe dvdm at truteq.co.za
Tue Jan 11 16:10:30 CET 2005


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
_____________________________________________________
TruTeq Wireless (Pty) Ltd.  | Tel: +27 (0)12 667 1530
http://www.truteq.co.za     | Fax: +27 (0)12 667 1531
Wireless communications for remote machine management




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