Hi I have written a code in Java which gives me a null response when i do a getNext.
I have checked this in wireshark also. My SnmpgetNext command is given like this : *snmpgetnext -v 3 -u manager2 -l authPriv -a MD5 -A password321 -x password -X DES <IP> , <OID>.* Where do i make wrong. Can you please help me on this. import java.io.IOException; import java.util.List; import java.util.Vector; import org.snmp4j.Snmp; import org.snmp4j.TransportMapping; import org.snmp4j.CommunityTarget; import org.snmp4j.PDU; import org.snmp4j.UserTarget; import org.snmp4j.Session; import org.snmp4j.ScopedPDU; import org.snmp4j.event.ResponseEvent; import org.snmp4j.mp.SnmpConstants; import org.snmp4j.mp.MPv3; import org.snmp4j.mp.MessageProcessingModel; import org.snmp4j.smi.Address; import org.snmp4j.security.SecurityLevel; import org.snmp4j.smi.GenericAddress; import org.snmp4j.security.SecurityProtocols; import org.snmp4j.security.*; import org.snmp4j.smi.OID; import org.snmp4j.security.UsmUser; import org.snmp4j.smi.OctetString; import org.snmp4j.event.ResponseEvent; import org.snmp4j.security.*; import org.snmp4j.security.AuthMD5; import org.snmp4j.security.PrivDES; import org.snmp4j.smi.VariableBinding; import org.snmp4j.transport.*; import org.snmp4j.util.DefaultPDUFactory; import org.snmp4j.util.TableEvent; import org.snmp4j.util.TableUtils; public class Test1 { /* * Class variable declarations */ PDU requestPDU = null; Snmp snmp = null; CommunityTarget target = null; String responseString = null; TransportMapping transport; OctetString username = new OctetString("manager2"); OctetString authname = new OctetString("password321"); OctetString Privname = new OctetString("password321"); ResponseEvent response; USM usm; /* * Main method; point of execution start. */ public static void main(String[] args) throws IOException { Test1 t = new Test1(); } public Test1() throws IOException { //System.out.println("I am inside test1 function"); Address targetAddress=GenericAddress.parse("udp:10.130.157.200/161"); System.out.println("The value of targetAddress is"+ targetAddress); transport = new DefaultUdpTransportMapping(); Snmp snmp; snmp = new Snmp(transport); byte[] localEngineID = ((MPv3)snmp.getMessageProcessingModel(MessageProcessingModel.MPv3)).createLocalEngineID(); //System.out.println(localEngineID); USM usm = new USM(SecurityProtocols.getInstance(),new OctetString(localEngineID),0); usm.removeAllUsers(); //System.out.println("I am here"); SecurityModels.getInstance().addSecurityModel(usm); snmp.setLocalEngine(localEngineID,0,0); UsmUser usmuser = new UsmUser(username,AuthMD5.ID,authname,PrivDES.ID,Privname,new OctetString(localEngineID)); //System.out.println("The value of user is \n"+usmuser); usm.addUser(username,null,usmuser); snmp.getUSM().addUser(username,usmuser); //System.out.println("2nd here"); ScopedPDU requestPDU = new ScopedPDU(); //PDU pdu = new ScopedPDU(); requestPDU.add(new VariableBinding(new OID("1.3.6.1.4.1.6486.800.1.2.1.8.1.1.1.1.1."))); requestPDU.setErrorIndex(0); requestPDU.setErrorStatus(0); requestPDU.setMaxRepetitions(3); requestPDU.setType(PDU.GETNEXT); //Address targetAddress = new UdpAddress("127.0.0.1/161"); UserTarget target = new UserTarget(); target.setAddress(targetAddress); target.setRetries(1); target.setSecurityLevel(SecurityLevel.AUTH_PRIV); target.setSecurityModel(SecurityModel.SECURITY_MODEL_USM); target.setTimeout(5000); target.setVersion(SnmpConstants.version3); snmp.listen(); System.out.println("The value of requestPDU is \n"+ requestPDU); System.out.println("The value of Target is \n"+ target); ResponseEvent response = snmp.send(requestPDU,target); PDU responsePDU = response.getResponse(); if (responsePDU != null) { String result = responsePDU.getVariableBindings().firstElement().toString(); if(result.contains("=")) { int len = result.indexOf("="); result = result.substring(len+1,result.length()); System.out.println("The value of responsePDU is "+ result); } } else { System.out.println("Timed out"); } //Address PeerAddress = response.getPeerAddress(); //System.out.println("The value of PeerAddress " + PeerAddress); snmp.close(); } } Regards Venkata Krishnan.S. _______________________________________________ SNMP4J mailing list SNMP4J@agentpp.org http://lists.agentpp.org/mailman/listinfo/snmp4j