Connecting to the Network | Cabletron Systems SEHI-24, SEHI-22

CONNECTING TO THE NETWORK

To connect an EPIM-T to a Twisted Pair Segment:

1.Insert the RJ45 connector on the twisted pair segment into the RJ45 port on the EPIM. See Figure 4-3.

2.Check that the EPIM’s LNK LED is on. If the LED is not on, perform each of the following steps until it is:

a.Check that the 10BASE-T device at the other end of the twisted pair segment is powered up.

b.Verify that the RJ45 connector on the twisted pair segment has the proper pinouts.

c.Check the cable for continuity.

d.Check that the twisted pair connection meets dB loss and cable specifications outlined in Chapter 2.

e.Check that the crossover switch is in the correct position.

If a link still has not been established, contact Cabletron Systems Technical Support.

4.1.4Connecting a Fiber Optic Link Segment to an EPIM-F1, EPIM-F2, or EPIM-F3

When connecting a ﬁber optic link segment to an EPIM-F1, F2, or F3 keep the following in mind:

•If you are connecting a ﬁber optic link segment with SMA 906 connectors to an EPIM-F1 with SMA ports, ensure that half alignment sleeves are in place on each connector. A full alignment sleeve will damage the receive port. SMA 905 connectors do not need alignment sleeves.

•If you are connecting a ﬁber optic link segment with ST connectors to an EPIM-F2 /F3 with ST ports, keep in mind that ST connectors attach to ST ports much like BNC connectors attach to BNC ports. Insert the connector into the port with the alignment key on the connector inserted into the alignment slot on the port. The connector is then turned to lock it down.

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

Contents

10BASE-T Intelligent Stackable HUB USER’S Guide Printed On Recycled Paper FCC Notice DOC Notice Cabletron SYSTEMS, INC Program License Agreement Cabletron Software Program License Exclusion of Warranty Disclaimer of Liability United States Government Restricted Rights Table of Contents Troubleshooting InstallationConnecting to the Network Local Management Contents Appendix B Twisted Pair Wiring Tables A-1 Using this Manual Chapter Introduction Introduction Getting Help Sehi Overview Polarity Detection and Correction Sehi FeaturesRepeater Functionality Flash EEPROMs Local Management Reset ButtonLanview LEDs Stackable Capabilities Introduction Optional Features Epim Rack Mount or Wall Mount Hardware Daughter Board Upgrade KitRelated Manuals Cable Specifications HubSTACK Interconnect Cable Requirements Impedance LengthInsertion Loss Jitter Crosstalk DelayTemperature Noise Fiber Optic Budget and Propagation Delay Cable Type Attenuation Maximum Cable Length Installation REQUIREMENTS/SPECIFICATIONS Cable Type ConnectorsThin-Net Network Requirements for the EPIM-C Module Terminators AUI Cable Requirements for the EPIM-A and EPIM-X Modules Network Port SpecificationsAUI Cable SEHI-22 and SEHI-24 Network Port Speciﬁcations SEHI-32 and SEHI-34 Network Port Speciﬁcations Pin Champ Connector Installation REQUIREMENTS/SPECIFICATIONS Epim Specifications EPIM-T EPIM-F1 and EPIM-F2 Parameter Typical Worst Worst Case Typical Value Budget EPIM-F3 EPIM-F3 Parameter Typical Minimum Maximum Connector Type EPIM-C EPIM-A and EPIM-X AUI Port EPIM-A and EPIM-X COM Transceiver Requirements General Delay Times Start of PacketsDelay Times JAM Preamble Output Min. Load Max. Load Max Power Fault ProtectionPower Supply Requirements JAM Output Safety Physical Installing the Sehi Unpacking the Sehi Stacking the Sehi Stacking the Sehi Attaching the Strain Relief Bracket Disconnect SEH and Sehi Interconnect Cables At the OUT Port Installing the Sehi in the Rack Rack Mounting the Sehi Wall Mounting the Sehi Free-Standing Installation Shelf or Table-top Installation Installation Connecting the Sehi to the Power Source Connecting the Sehi to the Network Connecting to Network Ports, SEHI-22 and SEHI-24 EPIM-2 Connecting to Network Ports, SEHI-32 and SEHI-34 Connecting a UTP Segment to an EPIM-T EPIM-T Cross-over Switch Connecting to the Network Connecting to the Network Connecting to the Network Connecting a Thin-Net Segment to an EPIM-C EPIM-C Connecting an AUI Cable to an EPIM-A EPIM-A Connecting an AUI Cable to an EPIM-X Finishing the Installation On Position Toward Back Epim OFF Position Toward Front Chapter Troubleshooting Installation CHECK-OUT Using Lanview PWR CPU RCV Troubleshooting CLNUsing the Reset Button LNK Chapter Local Management Local Management Management Terminal Requirements Console Cable Conﬁguration Management Terminal Connection General Setup Management Terminal Setup ParametersMenu Function Selection Display Setup Setup Local Management Accessing Local Management Sehi Local Management Feature Selection Screen Local Management Using the Local Management Screens Community Name Table Screen Access Community Name Editing the Community Name Field Conﬁguration Screen IP Address Setting the IP Address Default GatewayPort Enable Override SubNet Mask Setting the Subnet Mask Setting the Default Gateway Using the Port Enable Override Exiting the Configuration Screen Trap Table Screen Traps Configuring the Trap TableSnmp Community Name Trap IP Address Exiting the Trap Table Screen Snmp Tools Screen Set OID PrependGet Get Next Step WalkRecall-OID Cycles Getting Individual OIDs Getting the Next OID Setting an OID Viewing Multiple OIDs Stepping Through OIDs Walking Through OIDsCycling Through OIDs Exiting the Snmp Tools Screen Device Statistics Screen Alignment Errors Errors ReceivedCRC Errors Port Admin. Status Update-Freq Enable PortDisable Port Port Seg. Status Using the Enable Port Command Selecting the Appropriate Module/Port Using the Disable Port Command Exiting the Device Statistics Screen Appendix a Twisted Pair Wiring Tables Twisted Pair Wiring Tables A-2 A-3 A-4 10BASE-T From Punch Down To RJ-45 Into Block Wallplate OfﬁceDrop Device A-6 A-7 SEHI-32/34 Punch Wall Plate Champ Down Block If Required Ethernet Device Figure A-1. Punch Down Block A-9 Spanish Power Supply CordGerman French