Connecting a UTP Segment to an EPIM-T | Cabletron Systems SEHI-32

CONNECTING TO THE NETWORK

4.Check that the link LED on the 10BASE-T Ethernet device and the applicable LNK LED on the SEHI are on. If the LEDs are not on, perform each of the following steps until the LEDs are on:

a.Check that the 10BASE-T device and the SEHI have power.

b.Verify the cabling between the SEHI and the 10BASE-T device.

c.Check the cable for continuity.

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

4.1.3Connecting a UTP Segment to an EPIM-T

Before connecting a segment to the EPIM-T, check each end of the segment to determine if the wires have been crossed-over for the proper connection. If the wires do not cross over, use the switch on the EPIM-T to internally cross over the RJ45 port. Refer to Figure 4-3 to properly set the EPIM-T cross-over switch.

Position X (crossed over)

1. RX+	5. NC
2. RX-	6. TX-
3. TX+	7. NC
4. NC	8. NC

Position =

(not crossed over)

1. TX+	5.	NC
2. TX-	6.	RX-
3. RX+	7. NC
4. NC	8. NC

Figure 4-3. EPIM-T Cross-over Switch

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Cabletron Systems SEHI-32, SEHI-22, SEHI-24, SEHI-34 manual Connecting a UTP Segment to an EPIM-T, EPIM-T Cross-over Switch

Contents

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