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Fluke Network Router manual Appendix A SNMP, MIBs, OIDs, Communities

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User’s Guide – version 1.6

NetWatch

Appendix A: SNMP

SNMP, or Simple Network Management Protocol, is a widely used standard that allows network management software to query network devices for status and information regardless of the type of device and the software it runs. The original SNMP developed in 1988 is defined in RFC 1157, and the current version 3 is fully backwards compatible. NetWatch uses SNMP version 2c when available; otherwise it reverts to version 1.

MIBs

The SNMP standard defines a large number of properties organised into a hierarchy that describes virtually everything about a device that a network manager might want to know. This hierarchy is called a MIB or Management Information Base. The SNMP standard defines a large MIB called MIB2; this describes system properties, routing information, interface status and statistics and a lot more. A large number of standard extension MIBs exist; the Interface MIB is used by NetWatch when supported, since it offers better support for high capacity interfaces than the standard MIB.

SNMP offers a way for hardware and software vendors to supply their own device- specific information in the form of Enterprise MIBs; most vendors have their own MIBs in addition to supporting some of the standard MIB.

OIDs

Each value defined in a MIB is referenced by its OID or Object Identifier. This is a long sequence of numbers separated by dots. Each number in an OID describes a sub level of the MIB hierarchy, thus the OID for the sysDescr object is 1.3.6.1.2.1.1.1, which means

iso.org.dod.internet.mgmt.mib-2.system.sysDescr. Most of the standard MIBs you

will come across will be in the mib-2 group, and all of the enterprise MIBs are

underneath iso.org.dod.internet.private.enterprises.

Communities

The original version of SNMP used a very simple secret word scheme to protect the information available from a device. Most SNMP-compliant devices support two “communities”, one of which can read the value of any variable in the MIB and one that also allows setting the values that can be configured. The community is passed to

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Fluke Network Router manual Appendix A SNMP, MIBs, OIDs, Communities

Contents

NetWatch User’s Guide Version1. GRANT OF LICENSE AND PAYMENT OF FEES Software License Agreement3. INTELLECTUAL PROPERTY RIGHTS 5. LIMITED WARRANTY 4. OTHER RESTRICTIONS6. CUSTOMER REMEDIES 7. NO OTHER WARRANTIES9. TERMINATION 10. INDEMNIFICATION11. CONFIDENTIAL INFORMATION AND SECURITY 12.EXPORT CONTROLUser’s Guide - version NetWatch2.Support Services 1.Definitions3.Support Charges User’s Guide - version4.Undertakings by You 5.Supplier’s Undertakings6.Limitation of Liability and indemnity 7.Intellectual Property Rights9.Confidential Information and Security 10 MiscellaneousUser’s Guide - version NetWatch4.Exceptions to Support Services 1.Support Hours3.Response Times 2.Support ServicesContents CONTENTSCHAPTER 2 - NETWATCH CONFIGURATION SOFTWARE LICENSE AGREEMENTCHAPTER 8 SERVICES, DISCOVERY AND POLLING CHAPTER 4- THE ALERTING SYSTEMCHAPTER 5 THE REPORTING SYSTEM CHAPTER 6 SYSLOGSCHAPTER 9 SECURITY APPENDIX A SNMPAPPENDIX B NETWATCH AND IIS APPENDIX D AUTO DISCOVERYKey Product Features Installing NetWatchChapter 1 - Introduction OverviewAccessing the User Interface Architecture OverviewService DetailsNetWatch Monitoring System User’s Guide - versionNetWatch Database Alerting SystemWeb Front-end User’s Guide - versionChapter 2 - NetWatch Configuration Global System SettingsParameter DescriptionSetting up a Device Step 1. Specifying DevicesStep 2. Select Service Types PingTCP Port Test SNMP Interface TestStep 4. Discovery Step 3. AlarmsUser’s Guide - version Step 5. Editing Devices Editing ServicesUser’s Guide - version Enabling Data Archiving Data ArchivingDisabling Data Archiving Chapter 3 - NetWatch Visualisation Managing Visual BackgroundsVisual Backgrounds Supplied with NetWatch To Create a New NetWatch VisualEnter Administration Section To Change the Background image of a VisualDrawing the Visual Add and Position Network NodesSaving Configuration Set-up Using a NetWatch VisualView Node Alarms Using Node Tools SubmenuNode Colour Code System View Traffic between 2 NodesLink Colour Code System Service List Alert Service AlertsChapter 4- The Alerting System How NetWatch Alerting WorksWeb Based Reports Receiving AlertsSyslog Email Recipient Setting up Alert ControllersSyslog Recipient Services Configuration ReportsChapter 5 The Reporting System AlertsSyslog Messages Configuring Devices to Send Syslogs to NetWatch Chapter 6 SyslogsSyslogs and NetWatch Enabling Syslog ReceptionManual backup of maps and database Restoring from a backupChapter 7 Utilities Backing up the database from the web interfaceSetting up a licence LoadLogs ManualChapter 8 Services, Discovery and Polling How NetWatch services workThe SNMP Interface Test service DiscoveryUser’s Guide - version NetWatchThe TCP Port Status service The Ping Response Test service The Receive SNMP Notifications serviceConfiguring services Response Time GraphingLevels of Security Chapter 9 SecurityEnabling Security Appendix A SNMP MIBsOIDs CommunitiesThe Windows snmptrap.exe service NotificationsWindows Windows NTConfiguring SNMP on a Cisco Router Further InformationUser’s Guide - version NetWatchAppendix B NetWatch And IIS User’s Guide - version NetWatchUser’s Guide - version Appendix D Auto Discovery Discovery MethodsCDP Discovery Route Table DiscoveryUser’s Guide - version IP Address Range FiltersNetWatch Appendix E Third Party Software jspSmartUploadMySQL Jakarta Tomcat