Fluke Network Tester user manual Tcp/Ip, Host Configuration

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Common Problems	6
Problems NetTool Detects

TCP/IP

•Problem: PC using incorrect IP subnet mask.

Explanation: NetTool has determined that the PC is not properly configured.

Remedy: Access PC network properties and correct the IP subnet mask.

•Problem: Router issued ICMP redirect. Hosts or devices using incorrect gateway/routers.

Explanation: NetTool has determined that the PC is not properly configured.

Remedy: Access PC network properties and correct the IP address. You should also make sure that the DHCP server is giving the correct addresses.

•Problem: Duplicate IP detected.

Explanation: NetTool has detected a duplicate IP address configured on a remote device. You should never have duplicate IPs running on the network. This problem prevents the PC from connecting to the network until it is resolved.

Remedy: Identify at least one of the devices and change its address to a valid one that is not being used.

Host Configuration

•Problem: BootP/DHCP server not responding.

Explanation: The PC is dynamically configured to find DHCP servers and none are found.

Remedy: Check the router and the DHCP server itself to make sure that they are running. Either could be misconfigured. Check connectivity to the DHCP server.

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Contents NetTool Limited Warranty and Limitation of Liability Table of Contents NetTool Iii Common Problems Appendices NetTool List of Tables Viii List of Figures NetTool Introduction Using This Manual What is NetTool?Package Contents Care and MaintenanceNetTool Features Registering NetTool Service and AdjustmentOptional Accessories NetTool Blaster PC/NetTool Link Utility ProgramsContacting Fluke Networks Turning on NetTool Installing and Running the Link UtilitiesGetting Acquainted NetTool ToolkitUtilization LED Link/Collision/Error LEDUnderstanding the LEDs Main Menu NetTool MenusIcons Navigation Keys ScrollingUsing the AC Adapter Power SupplyMaximizing Battery Life Installing the BatteriesUpdating NetTool’s Software Introduction Setting Up and Connecting NetToolConfiguring NetTool Settings Menu Changing the System SettingsManually Assigning NetTool an IP Address Identifying Unwanted ProtocolsObtaining Information about Your NetTool Selecting a Language for the Display ScreensCreating a List of IP Addresses to Ping Single-Ended Connection Connecting NetToolConnecting a Patch Cable Single-Ended Connection into a Wall Jack Inline Connection between a PC Network Inline ConnectionSerial Port Connection Recommended speed setting for the serial port isRunning AutoTest AutoTestCable Length, Opens, Shorts, and Splits WiremapCable Test Results Network Drop Single-Ended AutoTest ResultsNetwork Device Services NetTool Discovers DeviceInline between a Device and the Network Inline AutoTest ResultsLink and Polarity Level Indicator Definition Inline between a PoE Powered Device and the Network NetTool Verifying a Device’s Configuration Troubleshooting a Network DeviceViewing Link Status Information Link Configuration DetailsHealth Details Checking Frames for ErrorsSelect Protocols Screen Tracking ProtocolsAddresses Used Screen Obtaining a Device’s IP Address InformationVlan Information Identifying Network ResourcesNetTool Finding Out About Your Network Troubleshooting NetworksSegment ID Screen Identifying the Network TypeIdentifying Key Devices Troubleshooting NetworksAssigning an IP Address to NetTool PingPinging a Single Device Ping Pinging Multiple DevicesPing Results Screen Displaying the Problem Log Common ProblemsProblem Log Understanding the Problem Log DisplayThings to Consider Problems NetTool DetectsLink Connectivity Problems Problem Transmit pair open Health Problems Network ProblemsNetWare Problem Ethernet frame-type mismatchesTCP/IP Host ConfigurationProblem Wins resolution failed Name ResolutionNetBIOS Web Problem PC involved in MB electionsPrinter Problem Unable to connect to POP3 serverUnwanted protocols when enabled Verifying Voice over IP Service Viewing Vlan and CDP Information Viewing PoE Voltage and Pair InformationVoIP Log VoIP LogRTP drop Viewing Call Quality MeasurementsBefore You Begin Creating and Managing ReportsReporter Menu Creating a ReportDeleting or Overwriting a Report NetTool Appendix Title AppendicesPage General Specifications SpecificationsEnvironmental Requirements Temperature ApprovalsSample VoIP Call Logs Dhcp ACK Typical Cisco Skinny Sccp Phone BootupAppendices Start Media Xmit Typical Cisco Skinny Sccp Call LogSample VoIP Call Logs B Typical Cisco Skinny Sccp Call Log Typical SIP Phone Bootup Log Typical SIP Phone Bootup Log Typical SIP Call Log Typical SIP Call Log 10BASE2 Glossary802.2 Access Method802.3 AnomalyAttenuation ARP Address Resolution ProtocolBridge Switch Characteristic impedanceCrosstalk ClientCollision Crossed PairEthernet Destination AddressEIA568 EncapsulationIP Internet Protocol Full-DuplexHalf-Duplex Icmp Internet Control and Message ProtocolLate Collision JabberJitter LAN Local Area NetworkNVP Nominal Velocity of Propagation NIC Network Interface CardPing Node NumberRouter or Gateway RJ-45 ConnectorRemote Collision RepeaterRunts SAP Service Advertising ProtocolSignal/Noise Ratio Rtcp Real-time Transport Control ProtocolSplit Pair Snap Subnetwork Access ProtocolSnmp Simple Network Management Protocol Source AddressTransceiver TopologyUptime TransportIndex NetTool Index NetTool