Kingston Technology KNE8TX/WG manual Design Features

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Design Features

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Design Features

The EtheRx hub complies with the full set of repeater basic functions as defined by IEEE 802.3u. These functions include all Repeater Functions, Signal Regeneration, Receive Jabber Protection, Collision-Handling, Error- Handling, and Auto Partitioning/Reconnection.

Repeater Functions

If any single port senses the start of a valid packet on its receiving line, the EtheRx hub will re-transmit the received data to all other ports on the network. The re-transmission of packets complies with the IEEE 802.3u specification in terms of preamble structure, voltage amplitude, and timing characteristics. These timing regenerations prevent cumulative signal loss, jitters, and distortion caused by network cabling, thus allowing the EtheRx hubs to be cascaded to other 100BASE-TX Class II repeaters.

Receive Jabber Protection

The EtheRx hub provides a Receive Jabber Protection scheme to ensure that the network is not disabled due to reception of excessively long data packets. This protection scheme will automatically interrupt the receiver if the EtheRx hub has been continuously receiving for more than 65,536-bit times.

Collision-Handling

The EtheRx hub will detect and respond to collision conditions as outlined in the IEEE 802.3u specifications.

Error-Handling

The 100BASE-TX standard uses an improved method of error-handling called block coding. With 100BASE-TX Fast Ethernet, the new error-handling feature prevents substandard links from generating streams of false carrier and interfering with other links.

Automatic Port Partitioning/Reconnection

If any of the ports on the EtheRx hub experience excessive collisions, or faulty conditions, that particular port can be partitioned. Once partitioned, the hub will continue to monitor that port. If the error conditions have been corrected or a good data packet is received without a collision, the hub will automatically reconnect that port to the network.

KNExTX/WG User’s Guide - Rev. A00

Kingston Technology Company

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Contents Kingston Technology Page Kingston Technology’s EtheRx Workgroup Port and 8-Port Fast Ethernet Hubs User’s GuidePart No -001.A00 Table of Contents Iii Page Model Types IntroductionPackage Contents Special FeaturesDesign Features Hardware Installation Power LEDFront Panel Utilization LEDs Collision LEDOr 8 UTP Port LEDs Using a Straight-Through Cable Cascade SwitchCascade Switch functions DC Power Connector Rear PanelOr 8 UTP Ports Appendices UTP Pin Assignments Appendix a Pin AssignmentsUTP Cable Wiring Cable Wiring StandardsAppendix B Cabling Guidelines Fig. B-1 4-Pair T568A Wiring Terms You Should Be Familiar With Rating CodesEtheRx 4- and 8-Port Fast Ethernet Workgroup Hubs Appendix C SpecificationsAppendix D Commonly Asked Questions Class I vs. Class II 100BASE-TX Fast Ethernet Repeaters Appendix D Commonly Asked QuestionsCategory 5 Compliance vs. Category 5 Performance? Appendix E Mounting TemplatesFig. E-1 Mounting Template specifications Limited Warranty Statement Duration of WarrantyAppendix F Warranties and Notices Warranty Claim Requirements Free Technical SupportDisclaimers CE Notice C. Certification
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