利用SNMP4j实现V3版本的服务端

最新推荐文章于 2024-08-23 10:57:19 发布

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最新推荐文章于 2024-08-23 10:57:19 发布

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分类专栏： SNMP 文章标签： string import null vb class

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本文提供了一段使用SNMP4j实现SNMPv3版本服务端Get操作的示例代码，该代码演示了如何设置安全级别、创建目标及发送请求等关键步骤。

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下面是一段利用SNMP4j实现V3版本的服务端代码，执行了Get操作。这段代码使用了auth,priv安全级别，如果需要使用其他两种级别，只需调整安全模型和访问控制的参数即可。

package v3; import java.io.IOException; import org.snmp4j.PDU; import org.snmp4j.ScopedPDU; import org.snmp4j.Snmp; import org.snmp4j.Target; import org.snmp4j.TransportMapping; import org.snmp4j.UserTarget; import org.snmp4j.event.ResponseEvent; import org.snmp4j.mp.MPv3; import org.snmp4j.mp.MessageProcessingModel; import org.snmp4j.mp.SnmpConstants; import org.snmp4j.security.AuthMD5; import org.snmp4j.security.PrivDES; import org.snmp4j.security.SecurityLevel; import org.snmp4j.security.SecurityModels; import org.snmp4j.security.SecurityProtocols; import org.snmp4j.security.USM; import org.snmp4j.security.UsmUser; import org.snmp4j.smi.GenericAddress; import org.snmp4j.smi.OID; import org.snmp4j.smi.OctetString; import org.snmp4j.smi.VariableBinding; import org.snmp4j.transport.DefaultUdpTransportMapping; public class V3CollectValue { private static String oid = "1.3.6.1.2.1.1.4.0"; public static void main(String[] args){ get(oid); } public static void get(String oid){ TransportMapping transportMapping = null; Snmp snmp = null; try { transportMapping = new DefaultUdpTransportMapping(); snmp = new Snmp(transportMapping); transportMapping.listen(); } catch (IOException e) { e.printStackTrace(); } Target agent = createV3Target(snmp, "192.168.254.133", 161);//Agent ScopedPDU pduV3 = new ScopedPDU();//V3独有的类型 pduV3.setType(PDU.GET); /*ContextName用于标识一个管理信息集合， * 如果agent本地有多块网卡，那么一般来说就有多个context*/ pduV3.setContextName(new OctetString("priv")); pduV3.add(new VariableBinding(new OID(oid))); try { ResponseEvent response = snmp.send(pduV3, agent); if (response == null || response.getResponse() == null) { System.out.println("SNMP request timed out"); } if (response != null) { PDU responsePDU = response.getResponse(); if (responsePDU.getErrorStatus() == PDU.noError) { for (int k = 0; k < responsePDU.size(); k++) { VariableBinding vb = responsePDU.get(k); if(vb!=null){ System.out.println(vb.getOid()+"-"+vb.getVariable().toString()); } } } else { System.out.println("SNMP Error:" + responsePDU.getErrorStatusText()); } } } catch (IOException e) { e.printStackTrace(); } } private static Target createV3Target(Snmp snmp, String agentIp, int agentPort) { String userName = "privUser"; String securityName = "privUser";//安全模块的名称 String authPassword = "authUser"; String privPassword = "privUser"; UserTarget userTarget = new UserTarget(); userTarget.setVersion(SnmpConstants.version3); userTarget.setSecurityLevel(SecurityLevel.AUTH_PRIV); userTarget.setSecurityName(new OctetString(securityName)); // 设置USM-用户安全模型 MPv3 mpv3 = (MPv3) snmp.getMessageProcessingModel(MessageProcessingModel.MPv3); USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(mpv3.createLocalEngineID()), 0); SecurityModels.getInstance().addSecurityModel(usm); // 设置用户 UsmUser usmUser = new UsmUser(new OctetString(userName), AuthMD5.ID, new OctetString(authPassword), PrivDES.ID, new OctetString(privPassword)); snmp.getUSM().addUser(new OctetString(userName), usmUser); userTarget.setRetries(3); userTarget.setTimeout(5000);//MS userTarget.setAddress(GenericAddress.parse("udp:" + agentIp + "/" + agentPort)); return userTarget; } }

执行后输出：

1.3.6.1.2.1.1.4.0-sysContact