在Java中发送陷阱v2

Question

如何从Java应用程序发送snmpv2陷阱。我试图做snmp4j的例子，但它没有奏效。

Answer 1

我为此使用SNMP4J。

This javadoc可能会帮助您编写代码。您可以使用Snmp.trap()方法

编辑：

好了，我不就在这时有我自己的代码，但你可以参考this之一。您必须使用Snmp.notify（）发送V2陷阱而不是Snmp.trap（），因为trap（）仅支持发送V1陷阱。

Answer 2

我会去snmp4j库http://www.snmp4j.org/。

import org.snmp4j.*; 
import org.snmp4j.event.*; 

... 
CommunityTarget target = new CommunityTarget(); 
target.setCommunity(new OctetString("public")); 
target.setAddress(targetAddress); 
target.setVersion(SnmpConstants.version2c); 

PDU request = new PDU(); 
request.setType(PDU.V2TRAP); 
request.setGenericTrap(PDUv2.COLDSTART); 

Snmp snmp = new Snmp(new DefaultUdpTransportMapping()); 
snmp.listen(); 
snmp.sendPDU(request, target, null, listener); 

Answer 3

我花了一些时间，但我终于想通了如何使用SNMP4J发送陷阱：希望帮助..

public static void main(String[] args) throws Exception { 
     // Create PDU   
     PDU trap = new PDU(); 
     trap.setType(PDU.TRAP); 

     OID oid = new OID("1.2.3.4.5"); 
     trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, oid)); 
     trap.add(new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(5000))); // put your uptime here 
     trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("System Description"))); 

     //Add Payload 
     Variable var = new OctetString("some string");   
     trap.add(new VariableBinding(oid, var));   

     // Specify receiver 
     Address targetaddress = new UdpAddress("10.101.21.32/162"); 
     CommunityTarget target = new CommunityTarget(); 
     target.setCommunity(new OctetString("public")); 
     target.setVersion(SnmpConstants.version2c); 
     target.setAddress(targetaddress); 

     // Send 
     Snmp snmp = new Snmp(new DefaultUdpTransportMapping()); 
     snmp.send(trap, target, null, null);      
} 

Answer 4

发送陷阱V1和V2通知一个很好的例子。我只需要将端口修改为162以及为版本V1和V2设置sysUpTime的方式。

使用snmp4j-1.10.1和snmp4j-2.1.0进行测试。

http://www.techdive.in/snmp/snmp4j-trap-sender

package snippet; 

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import java.util.Date; 

import org.snmp4j.CommunityTarget; 
import org.snmp4j.PDU; 
import org.snmp4j.PDUv1; 
import org.snmp4j.Snmp; 
import org.snmp4j.TransportMapping; 
import org.snmp4j.mp.SnmpConstants; 
import org.snmp4j.smi.IpAddress; 
import org.snmp4j.smi.OID; 
import org.snmp4j.smi.OctetString; 
import org.snmp4j.smi.UdpAddress; 
import org.snmp4j.smi.TimeTicks; 
import org.snmp4j.smi.VariableBinding; 
import org.snmp4j.transport.DefaultUdpTransportMapping; 

public class TrapSender { 
    public static final String community = "public"; 

    // Sending Trap for sysLocation of RFC1213 
    public static final String trapOid = ".1.3.6.1.2.1.1.6"; 

    public static final String ipAddress = "192.168.1.52"; 

    public static final int port = 162; 

    public TrapSender() { 
    } 

    public static void main(String[] args) { 
     TrapSender snmp4JTrap = new TrapSender(); 

     /* Sending V1 Trap */ 
     snmp4JTrap.sendSnmpV1Trap(); 

     /* Sending V2 Trap */ 
     snmp4JTrap.sendSnmpV2Trap(); 
    } 

    /** 
    * This methods sends the V1 trap to the Localhost in port 163 
    */ 
    public void sendSnmpV1Trap() { 
     try { 
      // Create Transport Mapping 
      TransportMapping transport = new DefaultUdpTransportMapping(); 
      transport.listen(); 

      // Create Target 
      CommunityTarget comtarget = new CommunityTarget(); 
      comtarget.setCommunity(new OctetString(community)); 
      comtarget.setVersion(SnmpConstants.version1); 
      comtarget.setAddress(new UdpAddress(ipAddress + "/" + port)); 
      comtarget.setRetries(2); 
      comtarget.setTimeout(5000); 

      // Create PDU for V1 
      PDUv1 pdu = new PDUv1(); 
      pdu.setType(PDU.V1TRAP); 
      pdu.setEnterprise(new OID(trapOid)); 
      pdu.setGenericTrap(PDUv1.ENTERPRISE_SPECIFIC); 
      pdu.setSpecificTrap(1); 
      pdu.setAgentAddress(new IpAddress(ipAddress)); 
        long sysUpTime = 111111; 
     pdu.setTimestamp(sysUpTime); 

      // Send the PDU 
      Snmp snmp = new Snmp(transport); 
      System.out.println("Sending V1 Trap to " + ipAddress + " on Port " + port); 
      snmp.send(pdu, comtarget); 
      snmp.close(); 
     } catch (Exception e) { 
      System.err.println("Error in Sending V1 Trap to " + ipAddress + " on Port " + port); 
      System.err.println("Exception Message = " + e.getMessage()); 
     } 
    } 

    /** 
    * This methods sends the V2 trap to the Localhost in port 163 
    */ 
    public void sendSnmpV2Trap() { 
     try { 
      // Create Transport Mapping 
      TransportMapping transport = new DefaultUdpTransportMapping(); 
      transport.listen(); 

      // Create Target 
      CommunityTarget comtarget = new CommunityTarget(); 
      comtarget.setCommunity(new OctetString(community)); 
      comtarget.setVersion(SnmpConstants.version2c); 
      comtarget.setAddress(new UdpAddress(ipAddress + "/" + port)); 
      comtarget.setRetries(2); 
      comtarget.setTimeout(5000); 

      // Create PDU for V2 
      PDU pdu = new PDU(); 

      // need to specify the system up time 
        long sysUpTime = 111111; 
      pdu.add(new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(sysUpTime))); 
      pdu.add(new VariableBinding(SnmpConstants.snmpTrapOID, new OID(trapOid))); 
      pdu.add(new VariableBinding(SnmpConstants.snmpTrapAddress, new IpAddress(ipAddress))); 

      // variable binding for Enterprise Specific objects, Severity (should be defined in MIB file) 
      pdu.add(new VariableBinding(new OID(trapOid), new OctetString("Major"))); 
      pdu.setType(PDU.NOTIFICATION); 

      // Send the PDU 
      Snmp snmp = new Snmp(transport); 
      System.out.println("Sending V2 Trap to " + ipAddress + " on Port " + port); 
      snmp.send(pdu, comtarget); 
      snmp.close(); 
     } catch (Exception e) { 
      System.err.println("Error in Sending V2 Trap to " + ipAddress + " on Port " + port); 
      System.err.println("Exception Message = " + e.getMessage()); 
     } 
    } 
} 

Answer 5

一个很好的例子可以在这里找到：

http://shivasoft.in/blog/java/snmp/create-snmp-client-in-java-using-snmp4j/