近期项目和华为的接口有要求用SNMP做实时告警的上送，在网上查找了些资料，整理了下
SNMP分为:SNMP TRAP\SNMP GET\SNMP SET
1.SNMP TRAP简单说一般就是Manager和agent之间拿来传输数据,Manager会一直监听着代理进程发送 TRAP消息
2.SNMP GET看到GET就知道就是从SNMP服务端获取某个节点的数据
3.SNMP SET就是设置SNMP服务端的某个节点的数据
实现SNMPTRAP需SNMP4J JAR包 http://www.snmp4j.org/html/download.html官网下载
1.首先实现SNMP TRAP接收消息服务端，监听Agent发来的TRAP消息
package com.eshore.snmptrap;
import java.io.IOException;
import java.net.UnknownHostException;
import java.util.Vector;
import org.snmp4j.CommandResponder;
import org.snmp4j.CommandResponderEvent;
import org.snmp4j.MessageDispatcherImpl;
import org.snmp4j.Snmp;
import org.snmp4j.TransportMapping;
import org.snmp4j.mp.MPv1;
import org.snmp4j.mp.MPv2c;
import org.snmp4j.mp.MPv3;
import org.snmp4j.security.SecurityModels;
import org.snmp4j.security.SecurityProtocols;
import org.snmp4j.security.USM;
import org.snmp4j.smi.Address;
import org.snmp4j.smi.GenericAddress;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.TcpAddress;
import org.snmp4j.smi.UdpAddress;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultTcpTransportMapping;
import org.snmp4j.transport.DefaultUdpTransportMapping;
import org.snmp4j.util.MultiThreadedMessageDispatcher;
import org.snmp4j.util.ThreadPool;
/**
* 本类用于监听代理进程的Trap信息
*
* @author zhanjia
*
*/
public class MultiThreadedTrapReceiver implements CommandResponder {
private MultiThreadedMessageDispatcher dispatcher;
private Snmp snmp = null;
private Address listenAddress;
private ThreadPool threadPool;
public MultiThreadedTrapReceiver() {
// BasicConfigurator.configure();
}
private void init() throws UnknownHostException, IOException {
threadPool = ThreadPool.create("Trap", 2);
dispatcher = new MultiThreadedMessageDispatcher(threadPool,
new MessageDispatcherImpl());
listenAddress = GenericAddress.parse(System.getProperty(
"snmp4j.listenAddress", "udp:127.0.0.1/162")); // 本地IP与监听端口
TransportMapping transport;
// 对TCP与UDP协议进行处理
if (listenAddress instanceof UdpAddress) {
transport = new DefaultUdpTransportMapping(
(UdpAddress) listenAddress);
} else {
transport = new DefaultTcpTransportMapping(
(TcpAddress) listenAddress);
}
snmp = new Snmp(dispatcher, transport);
snmp.getMessageDispatcher().addMessageProcessingModel(new MPv1());
snmp.getMessageDispatcher().addMessageProcessingModel(new MPv2c());
snmp.getMessageDispatcher().addMessageProcessingModel(new MPv3());
USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(MPv3
.createLocalEngineID()), 0);
SecurityModels.getInstance().addSecurityModel(usm);
snmp.listen();
}
public void run() {
try {
init();
snmp.addCommandResponder(this);
System.out.println("开始监听Trap信息!");
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* 实现CommandResponder的processPdu方法, 用于处理传入的请求、PDU等信息
* 当接收到trap时，会自动进入这个方法
*
* @param respEvnt
*/
public void processPdu(CommandResponderEvent respEvnt) {
// 解析Response
if (respEvnt != null && respEvnt.getPDU() != null) {
Vector<VariableBinding> recVBs = (Vector<VariableBinding>) respEvnt.getPDU().getVariableBindings();
for (int i = 0; i < recVBs.size(); i++) {
VariableBinding recVB = recVBs.elementAt(i);
System.out.println(recVB.getOid() + " : " + recVB.getVariable());
}
}
}
public static void main(String[] args) {
MultiThreadedTrapReceiver multithreadedtrapreceiver = new MultiThreadedTrapReceiver();
multithreadedtrapreceiver.run();
}
}
2.再写个Agent向服务端发送TRAP消息
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package com.eshore.snmptrap;
import java.io.IOException;
import java.util.Date;
import java.util.Vector;
import org.snmp4j.CommunityTarget;
import org.snmp4j.PDU;
import org.snmp4j.Snmp;
import org.snmp4j.TransportMapping;
import org.snmp4j.event.ResponseEvent;
import org.snmp4j.mp.SnmpConstants;
import org.snmp4j.smi.Address;
import org.snmp4j.smi.GenericAddress;
import org.snmp4j.smi.Integer32;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.OctetString;
import org.snmp4j.smi.VariableBinding;
import org.snmp4j.transport.DefaultUdpTransportMapping;
/**
* 本类用于向管理进程发送Trap信息
*
* @author zhanjia
*
*/
public class SnmpUtilSendTrap {
private Snmp snmp = null;
private Address targetAddress = null;
public void initComm() throws IOException {
// 设置管理进程的IP和端口
targetAddress = GenericAddress.parse("udp:127.0.0.1/162");
TransportMapping transport = new DefaultUdpTransportMapping();
snmp = new Snmp(transport);
transport.listen();
}
/**
* 向管理进程发送Trap报文
*
* @throws IOException
*/
public void sendPDU() throws IOException {
// 设置 target
CommunityTarget target = new CommunityTarget();
target.setAddress(targetAddress);
// 通信不成功时的重试次数
target.setRetries(2);
// 超时时间
target.setTimeout(1500);
// snmp版本
target.setVersion(SnmpConstants.version2c);
// 创建 PDU
PDU pdu = new PDU();
pdu.add(new VariableBinding(new OID(".1.3.6.1.4.1.2011.2.15.2.1.2.1.1.1.1"), new OctetString("SNMPTEST")));
pdu.add(new VariableBinding(new OID(".1.3.6.1.4.1.2011.2.15.2.1.2.1.1.1.2"), new Integer32(10)));
pdu.add(new VariableBinding(new OID(".1.3.6.1.4.1.2011.2.15.2.1.2.1.1.1.3"), new OctetString(new Date().toString())));
pdu.setType(PDU.TRAP);
// 向Agent发送PDU，并接收Response
ResponseEvent respEvnt = snmp.send(pdu, target);
// 解析Response
if (respEvnt != null && respEvnt.getResponse() != null) {
Vector<VariableBinding> recVBs = (Vector<VariableBinding>) respEvnt.getResponse()
.getVariableBindings();
for (int i = 0; i < recVBs.size(); i++) {
VariableBinding recVB = recVBs.elementAt(i);
System.out.println(recVB.getOid() + " : " + recVB.getVariable());
}
}
}
public static void main(String[] args) {
try {
SnmpUtilSendTrap util = new SnmpUtilSendTrap();
util.initComm();
util.sendPDU();
} catch (IOException e) {
e.printStackTrace();
}
}
}