Cabletron Systems SEHI-34, SEHI-22, SEHI-32, SEHI-24 manual Connecting to the Network

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CONNECTING TO THE NETWORK

•The physical communication link consists of two strands of ﬁber optic cabling: the Transmit (TX) and the Receive (RX). The Transmit strand from the applicable port on the module will be connected to the Receive port of a ﬁber optic Ethernet device at the other end of the segment. For example, TX of the applicable port on the module will go to RX of the other ﬁber optic device. The Receive strand of the applicable port on the module will be connected to the Transmit port of the ﬁber optic Ethernet device. For example, RX of the applicable port on the module will go to TX of the other ﬁber optic device.

We recommend that you label the fiber optic cable to indicate which fiber is Receive and which is Transmit. When you buy fiber optic cable from Cabletron Systems, it is labeled so that: at one end of the cable, one fiber is labeled 1, and the other fiber is labeled 2. This pattern is repeated at the other end of the cable. If you did not purchase your cable from Cabletron Systems, be sure you label your cable as described above.

Caution: Do not touch the ends of the fiber optic strands, and do not let the ends come in contact with dust, dirt, or other contaminants. Contamination of the ends can cause problems in data transmissions. If the ends become contaminated, clean them with alcohol using a soft, clean, lint free cloth.

To connect a ﬁber optic link segment to an EPIM-F1, EPIM-F2, or EPIM-F3:

1.Remove the protective plastic covers from the fiber optic ports on the applicable port on the module and from the ends of the connectors on each fiber strand.

2.Attach the fiber labeled 1 to the applicable receive port, labeled RX, on the module. See Figure 4-4.

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Contents 10BASE-T Intelligent Stackable HUB USER’S Guide Printed On Recycled Paper DOC Notice FCC NoticeCabletron Software Program License Cabletron SYSTEMS, INC Program License AgreementUnited States Government Restricted Rights Exclusion of Warranty Disclaimer of LiabilityTable of Contents Local Management InstallationConnecting to the Network TroubleshootingContents Appendix B Twisted Pair Wiring Tables A-1 Chapter Introduction Using this ManualSehi Overview Introduction Getting HelpFlash EEPROMs Sehi FeaturesRepeater Functionality Polarity Detection and CorrectionStackable Capabilities Reset ButtonLanview LEDs Local ManagementEpim Introduction Optional FeaturesRelated Manuals Daughter Board Upgrade KitRack Mount or Wall Mount Hardware HubSTACK Interconnect Cable Requirements Cable SpecificationsJitter LengthInsertion Loss ImpedanceNoise DelayTemperature CrosstalkCable Type Attenuation Maximum Cable Length Fiber Optic Budget and Propagation DelayInstallation REQUIREMENTS/SPECIFICATIONS Terminators ConnectorsThin-Net Network Requirements for the EPIM-C Module Cable TypeAUI Cable Network Port SpecificationsAUI Cable Requirements for the EPIM-A and EPIM-X Modules SEHI-32 and SEHI-34 Network Port Speciﬁcations SEHI-22 and SEHI-24 Network Port SpeciﬁcationsPin Champ Connector EPIM-T Installation REQUIREMENTS/SPECIFICATIONS Epim SpecificationsParameter Typical Worst Worst Case Typical Value Budget EPIM-F1 and EPIM-F2EPIM-F3 EPIM-F3Parameter Typical Minimum Maximum EPIM-C Connector TypeEPIM-A and EPIM-X EPIM-A and EPIM-X AUI PortTransceiver Requirements COMPreamble Delay Times Start of PacketsDelay Times JAM GeneralJAM Output Fault ProtectionPower Supply Requirements Output Min. Load Max. Load Max PowerPhysical SafetyUnpacking the Sehi Installing the SehiStacking the Sehi Stacking the Sehi Disconnect SEH and Sehi Interconnect Cables At the OUT Port Attaching the Strain Relief BracketRack Mounting the Sehi Installing the Sehi in the RackWall Mounting the Sehi Shelf or Table-top Installation Free-Standing InstallationInstallation Connecting the Sehi to the Power Source Connecting to Network Ports, SEHI-22 and SEHI-24 Connecting the Sehi to the NetworkEPIM-2 Connecting to Network Ports, SEHI-32 and SEHI-34 EPIM-T Cross-over Switch Connecting a UTP Segment to an EPIM-TConnecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C EPIM-A Connecting an AUI Cable to an EPIM-AConnecting an AUI Cable to an EPIM-X On Position Toward Back Epim OFF Position Toward Front Finishing the InstallationInstallation CHECK-OUT Chapter TroubleshootingUsing Lanview CPU PWRLNK Troubleshooting CLNUsing the Reset Button RCVChapter Local Management Local Management Management Terminal Requirements Management Terminal Connection Console Cable ConﬁgurationSetup Management Terminal Setup ParametersMenu Function Selection Display Setup General SetupSehi Local Management Local Management Accessing Local ManagementFeature Selection Screen Community Name Table Screen Local Management Using the Local Management ScreensCommunity Name AccessEditing the Community Name Field IP Address Conﬁguration ScreenSubNet Mask Default GatewayPort Enable Override Setting the IP AddressSetting the Subnet Mask Using the Port Enable Override Setting the Default GatewayTrap Table Screen Exiting the Configuration ScreenTrap IP Address Configuring the Trap TableSnmp Community Name TrapsSnmp Tools Screen Exiting the Trap Table ScreenGet Next OID PrependGet SetCycles WalkRecall-OID StepGetting the Next OID Getting Individual OIDsViewing Multiple OIDs Setting an OIDCycling Through OIDs Walking Through OIDsStepping Through OIDs Device Statistics Screen Exiting the Snmp Tools ScreenPort Admin. Status Errors ReceivedCRC Errors Alignment ErrorsPort Seg. Status Enable PortDisable Port Update-FreqSelecting the Appropriate Module/Port Using the Enable Port CommandExiting the Device Statistics Screen Using the Disable Port CommandTwisted Pair Wiring Tables Appendix a Twisted Pair Wiring TablesA-2 A-3 A-4 Drop Device From Punch Down To RJ-45 Into Block Wallplate Ofﬁce10BASE-T A-6 A-7 Champ Down Block If Required Ethernet Device SEHI-32/34 Punch Wall PlateFigure A-1. Punch Down Block A-9 French Power Supply CordGerman Spanish