Fluke Network Router manual Services, Discovery and Polling, How NetWatch services work

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User’s Guide – version 1.6

NetWatch

Chapter 8: Services, Discovery and Polling

If you are new to configuring NetWatch, please refer to Chapter 2, “Configuration” for a step-by-step guide to setting up devices before reading this chapter. This chapter describes in detail the operation and advanced configuration of the various types of monitoring NetWatch can carry out on a device.

How NetWatch services work

Most of the information gathered by NetWatch about a network is gathered on a device-by-device basis. Each device on a network, be it a router, switch or application server offers a number of different services to its users, including network management stations like NetWatch. These services are things like basic network connectivity, connections to other networks and applications like web or telnet servers. Since the services offered by a device are of several different types, NetWatch handles them differently.

Discovery

Whenever you change the types of service you wish to monitor on a device, you must discover services on the device. What this does is contact the device to determine what individual services of each type the device supports. For example, when a device with an SNMP Interface Test service type is discovered, a service is created for each interface the device contains.

Each service type can be configured with default properties that are applied to each of the services it creates. These properties set things like the average and maximum response times NetWatch should experience when it checks the status of a service on the device. You can change these properties for some or all of the services after they have been discovered if you find the defaults are producing too many alerts.

The SNMP Interface Test service

The SNMP Interface Test service type can be added to any device that supports SNMP. See Appendix B for more information about SNMP. On discovery, a service is created for each interface the device supports. You may find that many more services are created than the device has physical interfaces. This can happen for many reasons; some WAN interfaces are divided into many lower-capacity sub interfaces; ISDN interfaces are usually reported by a router as separate bearer channels; virtual dialler interfaces are often detected; and sometimes an interface is listed by a device more than once on order to provide special management features.

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Contents NetWatch Software License Agreement Other Restrictions Termination User’s Guide version NetWatch Support Charges Support ServicesDefinitions Intellectual Property Rights Undertakings by YouSupplier’s Undertakings Limitation of Liability and indemnityMiscellaneous Confidential Information and SecurityResponse Times Exceptions to Support ServicesSupport Hours Contents Reporting System Security Overview Key Product FeaturesInstalling NetWatch IntroductionArchitecture Overview Accessing the User InterfaceNetWatch Monitoring System Web Front-end NetWatch DatabaseAlerting System Global System Settings NetWatch ConfigurationSpecifying Devices Setting up a DeviceSnmp Interface Test Select Service TypesPing TCP Port TestDiscovery AlarmsEditing Devices Editing ServicesDisabling Data Archiving Data ArchivingEnabling Data Archiving Visual Backgrounds Supplied with NetWatch NetWatch VisualisationManaging Visual Backgrounds To add an action to a Node\Link Drawing the VisualClick Add Node Select Description Alignment Using a NetWatch VisualLink Colour Code System View Traffic between 2 NodesNode Colour Code System What Can Trigger an Alert? Alerting SystemHow NetWatch Alerting Works Syslog Receiving AlertsWeb Based Reports Syslog Recipient Setting up Alert ControllersEmail Recipient Reporting System Syslog Messages Enabling Syslog Reception Configuring Devices to Send Syslogs to NetWatchSyslogs Syslogs and NetWatchUtilities Manual Status Setting up a licenceLoad Discovery Services, Discovery and PollingHow NetWatch services work Snmp Interface Test servicePage TCP Port Status service Response Time Graphing Ping Response Test serviceReceive Snmp Notifications service Configuring servicesEnabling Security SecurityLevels of Security Communities Appendix a SnmpMIBs OIDsWindows NT Windows snmptrap.exe serviceNotifications WindowsFurther Information Configuring Snmp on a Cisco RouterUser’s Guide version NetWatch Appendix B NetWatch And IIS Page Appendix C Integrating Netwatch and Netflow Tracker Discovery Methods Appendix D Auto DiscoveryIP Address Range Filters JspSmartUpload MySQL Jakarta Tomcat Appendix E Third Party Software
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