基于SNMP网络设备监控系统的实现

SNMP

SDK 80 6.5 23

SNMP

SNMP

SNMP OSI 1988 Internet IAB SNMP Internet 1992 SNMPv2 SNMPv1 SNMPv3 SNMP SNMP

SNMP MIB SMI SNMP SNMP ( Hub )

SNMP

OSI (packets) SNMP UDP( ) SNMP UDP (datagrams) UDP UDP SNMP SNMP PDU(Protocol Data Unit) SNMP SNMP SNMP Version1 Version2 Version3 SNMP "public" SNMP

1. Get_Request Manager Agent

2. Get_ Next_Request Manager Agent Get-Request

3. Get_Response Agent Manager

4. Set_Request Manager Agent Agent

/ )

5. Trap Agent Agent Manager SNMP4J

SNMP4J SNMP API for Java JAVASE 1.4

https://www.360docs.net/doc/0418780938.html,/ JavaDoc wiki

Java Demo

/** * @Title SNMPTest.java * @Description TODO( ) * @Author yzh yingzh@https://www.360docs.net/doc/0418780938.html, * @Date 05.30.2016 */public class SNMPTest { // private String address = "115.236.68.58"; /** * */ private String protocol = "udp"; /** * 1

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*/ private int port = 161; /** * */ private String community = "compublik"; /** * */ private long timeout = 5 * 1000L ; /** * */ private int retry = 3; /** * SNMPv2 * * @throws IOException */ @Test public void getRequest () throws IOException { //DefaultUdpTransportMapping SNMP UDP . TransportMapping transport = new DefaultUdpTransportMapping (); // SNMPv3 Snmp snmpClient = new Snmp (transport ); // transport .listen (); // Address address = GenericAddress .parse (this .protocol + ":" + this .address + "/" + this .port ); // target Target target = new CommunityTarget (address , new OctetString (this .community )); // target .setVersion (SnmpConstants .version2c ); // target .setRetries (this .retry ); // target .setTimeout (this .timeout ); PDU request = new PDU (); // request .setType (PDU .GET ); // add OID request .add (new VariableBinding (new OID (".1.3.6.1.2.1.1.5.0"))); //

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ResponseEvent respEvent = snmpClient .send (request , target ); PDU response = respEvent .getResponse (); if (null !=response ){ if (response .size ()>0){ VariableBinding vb = response .get (0); System .out .println ("OID: "+vb .getOid ().toString ()); System .out .println ("Value: "+vb .getVariable ().toString ()); } } }}

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7. ResponseEvent

ResponseEvent.getResponse(),

8. Snmp.close()

SNMP

SNMP (NMS) ( SNMP ) SNMP Manager/Agent Manager Agent

SMI

SMI SNMP SNMP MIB

MIB

SNMP

MIB(Management Information Base) MIB MIB MIB MIB MIB MIB OID(Object Identi?er)

MIB IP https://www.360docs.net/doc/0418780938.html,.dod.internet.mgmt.mid.ip

1.3.6.1.

2.1.4

MIB OID 1.3.6.1.2.1 , MIB OID 1.3.6.1.4.1 IP

SNMP cpu/