Mrtg window

SNMP Programming Yen-Cheng ChenSNMP Agents • 127.0.0.1 (localhost) • 10.32.6.3 (D-link Switch) • 10.32.6.4 (Cisco Layer-3 Switch) • 10.32.6.8 (Cisco AP) • 10.32.2.30 (HP Printer) Community Name: nm2013 Project • MRTG • 70~85 • php SNMP • 75~90 • Java • 80~90 • Java + JFreeChart • 85~95 WebNMS SNMP APIOutline • MRTG • Network Service Monitoring Using Sockets • WebNMS/AdventNet SNMP API • JFreeChart • Perl SNMPMRTG • Multi Router Traffic Grapher (Oeticker and Rand) • • Generates graphic presentation of traffic on Web • Daily view • Weekly view • Monthly view • Yearly viewInstallation (Windows) • Perl (ActivePerl) • • • • MRTG • • • • Path • C:\Perl\bin;… • Configuration file: mrtg.cfg • perl mrtg mrtg.cfg • (cont.) • wperl c:\mrtg\bin\mrtg c:\mrtg\cfg\mrtg.cfg • cfgmaker • automatically generate a configuration file • perl cfgmaker community@host > mrtg.cfg • indexmaker • automatically generate an index web page • perl indexmaker mrtg.cfg > index.htmlmrtg.cfg RunAsDaemon: yes Language: big5 WorkDir: c:\Inetpub\wwwroot\mrtgdata Htmldir: c:\www\mrtg Imagedir: c:\www\mrtg\images Logdir: c:\mrtglogs IconDir: c:\www\mrtgicons Forks: 4 Refresh: 600 Interval: 10 WriteExpires: Yes NoMib2: Yes SingleRequest: Yes LoadMIBs: c:\mibs\mib2.mib,c:\mibs\ether.mib (sec) (分鐘) (sysName, sysUpTime) (Variable Binding List)mrtg.cfg (cont.) trunk2.html Target[trunk2]: 2:public@163.22.22.43: SetEnv[trunk2]: MRTG_INT_IP="“MRTG_INT_DESCR="FastEthernet0/1" MaxBytes[trunk2]: 12500000 Title[trunk2]: Traffic Analysis for 2 -- cnclab PageTop[trunk2]: Traffic Analysis for 2 -- cnclab System:cnclab in R409 Maintainer:mentor Description:FastEthernet0/1 ifType:ethernetCsmacd (6) ifName:Fa0/1 Max Speed:12.5 MBytes/s Options[trunk2]: growright, bitsTarget[xxx]: • port:community@router 2:public@163.22.22.43 -1:public@ezci-ether.ethz.ch • OID_1&OID_2:community@router 1.3.6.1.4.1.11.2.1&1.3.6.1.4.1.11.5.1:public@myrouter ifInErrors.1&ifOutErrors.1:public@myrouter • Multi Target Syntax 2:public@wellfleetA + 1:public@wellfleetAIntranet 2 R2 SNMP Agent R1 NMS Intranet 1External Monitoring Scripts • The external command must return 4 lines of output: • Line 1 current state of the first variable, normally 'incoming bytes count' • Line 2 current state of the second variable, normally 'outgoing bytes count' • Line 3 string (in any human readable format), telling the uptime

Detect all port activity The port sniffer included within the PRTG network monitor tool detects all port activity in your network, as well as your system's application usage. All the data that is being sent and received through your network's ports can be easily monitored with PRTG. With PRTG and its included port sniffer, there is no need for additional port monitoring software. This advanced monitoring utility can capture, view, log, and analyze network data. You can use the port sniffer for data acquisition, connection & interface testing diagnostic analysis, packet analyzer and more.In addition, PRTG's port sniffer supports a wide selection of events, methods and properties.If you're looking for a professional tool that will simplify the tasks of monitoring and managing your network's ports, PRTG Network Monitor is your solution. Offering both a completely free, basic edition and expanded commercial editions, PRTG Network Monitor is the right choice for all your network monitoring & analysis needs.Read more about PRTG's port sniffer. Illustration of how the port sniffer works "I am an avid supporter of PRTG and I would like to congratulate you on this most excellent product which really works very well and is very easy to use. You have identified a gap in the market for easy "MRTG"-style traffic management, and I have to say without your product I would certainly be lost. I stumbled upon PRTG in Google whilst again looking for an easy to use "MRTG"-style traffic graphing and immediately bought it. I have also encouraged my partners to purchase the application. My business is an Internet Service Provider and we also have a Wireless Internet Service Provider Division. I use PRTG to monitor all my critical links." Eugene van der Merwe, www.snowball.co.za"I really think that you guys have made a damn good program here, and I have never regretted buying it from you. For the past 3 years I have been using MRTG and ever since I started using it I have been searching for a program like this one. So 3 words for your team, DAMN GOOD JOB.", Jeppe Jessen, www.dns-service.dkPRTGNetwork Monitoring Software -

Of the target. • Line 4 string, telling the name of the target. Target[rr1]: `perl C:\perl\df2mrtg.pl var1 var2`Configuration Target[MyDisk]: `java -cp .;C:/SomeDir/commons-io-2.0.1.jar DiskSpace` MaxBytes[MyDisk]: 42154528 Title[MyDisk]: PC-YCChen's Disk Free Space PageTop[MyDisk]: PC-YCChen's Disk Free Space YLegend[MyDisk]: KBytes Options[MyDisk]: growright, gauge DiskSpace.java import java.io.IOException; import java.util.*; import java.text.SimpleDateFormat; import org.apache.commons.io.FileSystemUtils; public class DiskSpace { public static void main(String[] args) { Date now= new Date(); SimpleDateFormat sdf = new SimpleDateFormat(); try { long freeDiskSpaceC = Math.round(FileSystemUtils.freeSpaceKb("C:")); long freeDiskSpaceD = Math.round(FileSystemUtils.freeSpaceKb("D:")); System.out.println(freeDiskSpaceC); System.out.println(freeDiskSpaceD); System.out.println(sdf.format(now)); System.out.println("PC-YCChen at R5041"); } catch (IOException e) { e.printStackTrace(); } } } javac -cp .;./commons-io-2.0.1.jar DiskSpace.javaifIndex problem • Interface by IP /1.2.3.4:public@wellfleet-fddi.ethz.ch • Interface by Description \My-If2:public@wellfleet-fddi.ethz.ch • Interface by Name #ifName1:public@wellfleet-fddi.ethz.ch • Interface by Ethernet Address !0-f-bb-05-71-22:public@ezci-ether.ethz.ch • Interface by Type %13:public@wellfleet-fddi.ethz.chOptions Options[trunck2]: growright, gauge, bits • growrights • The graph grows to the left by default. This option will make the graph grow to the right • gauge • For data type “gauge”. To monitor things like disk space, processor load, temperature • bits • absolute • for counter type data sources which reset their value when they are read. • Other useful options: • logscale, perminute, perhour, nopercent, dorelpercent, unknaszero, withzeroesMake MRTG run all the time Yen-Cheng Chen IM, NCNU TaiwanC:\perl\bin\wperl mrtg --logging=eventlog mrtg.cfg Add the option RunAsDaemon: yes to your mrtg.cfg1 3 21 2Network Service Monitoring • Usually, we use ‘ping’ to detect whether a host is alive. • A host is alive, but its network service may be down. • Try to establish a TCP connection with the network service. • If the connection is established, the network service is still running. • Otherwise, the service is down.import java.net.*; import java.io.*; public class PortMonitor { public static void main(String[] args) { String host = args[0] ; String ports[] = new String [args.length - 1];