利用oracle mib库深入了解网络设备性能（oracle mib库）
利用Oracle MIB库深入了解网络设备性能
随着网络设备的不断发展，企业对网络设备的性能监控和管理也变得越来越重要。如果企业无法明确了解其网络设备的性能状况，可能会导致网络延迟、丢包等问题的出现，无法保持网络的高效运转。
为了更好地了解网络设备的性能状况，可使用Oracle MIB库。 Oracle MIB库是一个重要的监控工具，可以管理网络设备的系统、接口、存储器和进程等。Oracle MIB库提供一系列的API和类，通过这些API和类，可实现对网络设备的性能状况进行监控和管理。
对于Oracle MIB库的使用，需要掌握以下几点：
1. 安装Oracle MIB库：可以从Oracle官方网站下载相应的Oracle MIB库，然后按照官方安装教程进行安装。
2. 编写监控程序：Oracle MIB库提供了相应的API和类，可以直接使用这些API和类，编写监控程序，获取网络设备的性能数据。
3. 选择合适的监控指标：可以根据实际需求，选择与企业业务相关的监控指标。例如，对于Web服务器，可选择网站访问量、网络延迟等指标进行监控；对于数据库服务器，可选择响应时间、查询速度等指标进行监控。
下面以一个简单的例子，演示如何使用Oracle MIB库获取网络设备的性能数据。该例子使用Oracle的Java语言进行编写。
代码如下：
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanInfo;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import javax.management.openmbean.TabularType;
import oracle.adf.share.logging.ADFLogger;
import oracle.sysman.emSDK.emd.comm.IDMethod;
import oracle.sysman.emd.comm.MonitoringMetric;
import oracle.sysman.emSDK.emd.comm.SnmpGet;
public class NetworkDeviceMetrics {
private static final String OID_CPU_LOAD = “1.3.6.1.4.1.2021.10.1.3.1”;
private static final String OID_MEM_TOTAL = “1.3.6.1.4.1.2021.4.5.0”;
private static final String OID_MEM_USED = “1.3.6.1.4.1.2021.4.6.0”;
private static final String OID_IF_NAME = “1.3.6.1.2.1.31.1.1.1.1”;
private static final String OID_IF_DESCR = “1.3.6.1.2.1.31.1.1.1.18”;
private static final String OID_IF_TYPE = “1.3.6.1.2.1.2.2.1.3”;
private static final String OID_IF_SPEED = “1.3.6.1.2.1.31.1.1.1.15”;
private static final String OID_IF_STATUS = “1.3.6.1.2.1.2.2.1.8”;
private static final String OID_IF_IN_BYTES = “1.3.6.1.2.1.2.2.1.10”;
private static final String OID_IF_OUT_BYTES = “1.3.6.1.2.1.2.2.1.16”;
private static final ADFLogger LOG = ADFLogger.createADFLogger(NetworkDeviceMetrics.class);
public void pollMetrics(String hostName, String snmpCommunity, int snmpVersion, String oracleMibName, String ifName) {
List metrics = new ArrayList();
MonitoringMetric metric = new MonitoringMetric();
metric.setHost(hostName);
metric.setSnmpCommunity(snmpCommunity);
metric.setSnmpVersion(snmpVersion);
metric.setSnmpOid(OID_CPU_LOAD);
metric.setMetricName(“CPU_LOAD”);
metric.setOracleMib(oracleMibName);
metrics.add(metric);
metric = new MonitoringMetric();
metric.setHost(hostName);
metric.setSnmpCommunity(snmpCommunity);
metric.setSnmpVersion(snmpVersion);
metric.setSnmpOid(OID_MEM_TOTAL);
metric.setMetricName(“MEM_TOTAL”);
metric.setOracleMib(oracleMibName);
metrics.add(metric);
metric = new MonitoringMetric();
metric.setHost(hostName);
metric.setSnmpCommunity(snmpCommunity);
metric.setSnmpVersion(snmpVersion);
metric.setSnmpOid(OID_MEM_USED);
metric.setMetricName(“MEM_USED”);
metric.setOracleMib(oracleMibName);
metrics.add(metric);
TabularData ifTable = null;
try {
ifTable = SnmpGet.getTabularData(“UDP:” + hostName + “/161”, “public”, IDMethod.SNMPv2c, OID_IF_NAME);
} catch (IOException e) {
LOG.error(“Error getting ifTable data”, e);
}
if (ifTable == null)
return;
TabularType tt = ifTable.getTabularType();
String[] names = { OID_IF_NAME, OID_IF_DESCR, OID_IF_TYPE, OID_IF_SPEED, OID_IF_STATUS, OID_IF_IN_BYTES, OID_IF_OUT_BYTES };
CompositeType ct = new CompositeType(“IfEntry”, “Interface data”, names, names, new String[] { “Interface name”, “Interface description”, “Interface type”, “Interface speed”, “Interface status”, “Input bytes”, “Output bytes” }, new String[] { “java.lang.String”, “java.lang.String”, “java.lang.Integer”, “java.lang.Long”, “java.lang.Integer”, “java.lang.Long”, “java.lang.Long” });
for (ObjectName on : ifTable.keySet()) {
int ifIndex = Integer.parseInt(on.getKeyPropertyList().get(“ifIndex”));
CompositeData cd = new CompositeDataSupport(ct, new String[] { OID_IF_NAME, OID_IF_DESCR, OID_IF_TYPE, OID_IF_SPEED, OID_IF_STATUS, OID_IF_IN_BYTES, OID_IF_OUT_BYTES },
new Object[] { getInterfaceName(ifTable, ifIndex), getInterfaceDescription(ifTable, ifIndex), getInterfaceType(ifTable, ifIndex), getInterfaceSpeed(ifTable, ifIndex), getInterfaceStatus(ifTable, ifIndex), getInterfaceInBytes(hostName, snmpCommunity, snmpVersion, ifIndex),
getInterfaceOutBytes(hostName, snmpCommunity, snmpVersion, ifIndex) });
TabularDataSupport tds = new TabularDataSupport(tt);
tds.put(cd);
MonitoringMetric met = new MonitoringMetric();
met.setHost(hostName);
met.setSnmpCommunity(snmpCommunity);
met.setSnmpVersion(snmpVersion);
met.setSnmpOid(null);
met.setMetricName(“IF_” + getInterfaceName(ifTable, ifIndex));
met.setOracleMib(oracleMibName);
met.setData(cd.toString());
metrics.add(met);
}
// 在此处可以将监控数据存储到数据库或显示到UI界面中
// do something with metrics
// …
}
public String getInterfaceName(TabularData table, int ifIndex) {
return getAttribute(table, ifIndex, “IfName”).toString();
}
public String getInterfaceDescription(TabularData table, int ifIndex) {
return getAttribute(table, ifIndex, “IfDescr”).toString();
}
public Integer getInterfaceType(TabularData table, int ifIndex) {
return Integer.parseInt(getAttribute(table, ifIndex, “IfType”).toString());
}
public Long getInterfaceSpeed(TabularData table, int ifIndex) {
return Long.parseLong(getAttribute(table, ifIndex, “ifSpeed”).toString());
}
public Integer getInterfaceStatus(TabularData table, int ifIndex) {
return Integer.parseInt(getAttribute(table, ifIndex, “ifOperStatus”).toString());
}
public Long getInterfaceInBytes(String hostName, String snmpCommunity, int snmpVersion, int ifIndex) {
try {
return SnmpGet.getLong
