SNMP Trap Generator using SNMP4J

This project is set up as a maven project where snmp4j library is mentioned as a dependency.

<dependency>
    <groupId>org.snmp4j</groupId>
    <artifactId>snmp4j</artifactId>
    <version>1.10.1</version>
</dependency>

This program will send SNMPv2 Trap message to any ip address mentioned. A SNMP Trap receiver program or application which is listening on port 162 would be able to receive the message.

 import java.io.IOException;  
 import org.snmp4j.CommunityTarget;  
 import org.snmp4j.PDU;  
 import org.snmp4j.Snmp;  
 import org.snmp4j.mp.SnmpConstants;  
 import org.snmp4j.smi.Address;  
 import org.snmp4j.smi.OID;  
 import org.snmp4j.smi.OctetString;  
 import org.snmp4j.smi.TimeTicks;  
 import org.snmp4j.smi.UdpAddress;  
 import org.snmp4j.smi.Variable;  
 import org.snmp4j.smi.VariableBinding;  
 import org.snmp4j.transport.DefaultUdpTransportMapping;  
 public class TrapGenerator {  
      /**  
       * @param args  
       * @throws IOException   
       */  
      public static void main(String[] args) throws IOException {  
           // Create PDU using SNMP4J       
         PDU trap = new PDU();  
         trap.setType(PDU.TRAP);  
         //Give some OID as it doesn't matter in this example  
         OID oid = new OID("1.3.6.1.2.1.1");  
         trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, oid));  
         trap.add(new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(1000)));  
         trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("My PC Windows 7 8GB RAM ")));   
         //Add Payload - here add your data  
         Variable var = new OctetString("My system is in trouble");       
         trap.add(new VariableBinding(oid, var));       
         // Specify receiver  
         Address targetaddress = new UdpAddress("144.158.6.59/162");  
         CommunityTarget target = new CommunityTarget();  
         target.setCommunity(new OctetString("public"));  
         target.setVersion(SnmpConstants.version2c);  
         target.setAddress(targetaddress);  
         // Send Trap to the address mentioned  
         Snmp snmp = new Snmp(new DefaultUdpTransportMapping());  
         snmp.send(trap, target, null, null);       
      }  
 } 

 To test this program I have downloaded Trapreceiver application from http://www.trapreceiver.com/ and this application captures Trap messages on the system where it runs.

Open TrapReceiver and then run the Java program. You will see Trap message as below.

Hope this helps.