Fluke Network Tester user manual Client, Collision, Crossed Pair, Crosstalk, DBm, DECnet

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NetTool

Users Manual

Client

A client is a computer that makes requests of a server. A client has only one user; a server is shared by many users.

Collision

A collision is the result of two or more nodes transmitting at the same time. Excessive collisions are most often caused by a problem with the physical media.

CSMA/CD (Carrier Sense, Multiple Access with Collision Detection)

In CSMA/CD, each node or station has equal access to the network. Before transmitting, each station waits until the network is not busy. Since each node has equal access to the network, a collision (two stations transmitting at the same time) can occur. If a collision occurs, the affected nodes will wait a random time to retransmit. Ethernet uses the CSMA/CD access method.

Crossed Pair

A wiring error in twisted pair cabling in which a pair on one connector of the cable is wired to a different pair on the other end of the cable.

Crosstalk

Crosstalk is electrical interference generated by signal coupling between wires in a multiwire cable.

dBm

Decibels below 1 mW (1 milliwatt). The logarithmic measure of the ratio of the output power of a signal to an input signal of 1 mW.

DECnet

Digital Equipment Corporation’s set of communication protocols for networking computers.

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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 Using This Manual What is NetTool? IntroductionCare and Maintenance NetTool FeaturesPackage Contents Service and Adjustment Optional AccessoriesRegistering NetTool PC/NetTool Link Utility Programs Contacting Fluke NetworksNetTool Blaster NetTool Toolkit Installing and Running the Link UtilitiesGetting Acquainted Turning on NetToolLink/Collision/Error LED Understanding the LEDsUtilization LED NetTool Menus IconsMain Menu Scrolling Navigation KeysInstalling the Batteries Power SupplyMaximizing Battery Life Using the AC AdapterUpdating NetTool’s Software Setting Up and Connecting NetTool Configuring NetToolIntroduction Changing the System Settings Settings MenuIdentifying Unwanted Protocols Manually Assigning NetTool an IP AddressSelecting a Language for the Display Screens Creating a List of IP Addresses to PingObtaining Information about Your NetTool Connecting NetTool Connecting a Patch CableSingle-Ended Connection Single-Ended Connection into a Wall Jack Inline Connection Inline Connection between a PC NetworkRecommended speed setting for the serial port is Serial Port ConnectionAutoTest Running AutoTestWiremap Cable Test ResultsCable Length, Opens, Shorts, and Splits Single-Ended AutoTest Results Network DropServices NetTool Discovers Device Network DeviceInline AutoTest Results Inline between a Device and the NetworkLink and Polarity Level Indicator Definition Inline between a PoE Powered Device and the Network NetTool Troubleshooting a Network Device Verifying a Device’s ConfigurationLink Configuration Details Viewing Link Status InformationChecking Frames for Errors Health DetailsSelect Tracking Protocols Protocols ScreenObtaining a Device’s IP Address Information Addresses Used ScreenIdentifying Network Resources Vlan InformationNetTool Troubleshooting Networks Finding Out About Your NetworkIdentifying the Network Type Segment ID ScreenTroubleshooting Networks Identifying Key DevicesPing Pinging a Single DeviceAssigning an IP Address to NetTool Pinging Multiple Devices PingPing Results Screen Common Problems Displaying the Problem LogUnderstanding the Problem Log Display Problem LogProblems NetTool Detects Link Connectivity ProblemsThings to Consider Problem Transmit pair open Network Problems Health ProblemsProblem Ethernet frame-type mismatches NetWareHost Configuration TCP/IPName Resolution Problem Wins resolution failedNetBIOS Problem PC involved in MB elections WebProblem Unable to connect to POP3 server PrinterUnwanted protocols when enabled Verifying Voice over IP Service Viewing PoE Voltage and Pair Information Viewing Vlan and CDP InformationVoIP Log VoIP LogViewing Call Quality Measurements RTP dropCreating and Managing Reports Before You BeginCreating a Report Reporter MenuDeleting or Overwriting a Report NetTool Appendices Appendix TitlePage Specifications General SpecificationsTemperature Approvals Environmental RequirementsSample VoIP Call Logs Typical Cisco Skinny Sccp Phone Bootup Dhcp ACKAppendices Typical Cisco Skinny Sccp Call Log Start Media XmitSample 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 Glossary 10BASE2Anomaly Access Method802.3 802.2Characteristic impedance ARP Address Resolution ProtocolBridge Switch AttenuationCrossed Pair ClientCollision CrosstalkEncapsulation Destination AddressEIA568 EthernetIcmp Internet Control and Message Protocol Full-DuplexHalf-Duplex IP Internet ProtocolLAN Local Area Network JabberJitter Late CollisionNode Number NIC Network Interface CardPing NVP Nominal Velocity of PropagationRepeater RJ-45 ConnectorRemote Collision Router or GatewayRtcp Real-time Transport Control Protocol SAP Service Advertising ProtocolSignal/Noise Ratio RuntsSource Address Snap Subnetwork Access ProtocolSnmp Simple Network Management Protocol Split PairTransport TopologyUptime TransceiverIndex NetTool Index NetTool