A-6 | Cabletron Systems SEHI-32, SEHI-22, SEHI-24, SEHI-34 guide

TWISTED PAIR WIRING TABLES

Table A-2. Twisted Pair Wiring

from a Punch Down Block to a 10Base-T Device (Continued)

From Punch Down			To RJ-45		Into		Into
Block			Wallplate		Ofﬁce		10BASE-T
					Drop		Device

Port 8/20			Pin		Pin		Pin
B29	Black/Gray	RX+	1	TX+	1	TX+	1	TX+
B30	Gray/Black	RX-	2	TX-	2	TX-	2	TX-
B31	Yellow/Blue	TX+	3	RX+	3	RX+	3	RX+
B32	Blue/Yellow	TX-	6RX-		6	RX-	6	RX-
Port 7/19			Pin		Pin		Pin
B25	Black/Green	RX+	1	TX+	1	TX+	1	TX+
B26	Green/Black	RX-	2	TX-	2	TX-	2	TX-
B27	Black/Brown	TX+	3	RX+	3	RX+	3	RX+
B28	Brown/Black	TX-	6	RX-	6	RX-	6	RX-
Port 6/18			Pin		Pin		Pin
B21	Black/Blue	RX+	1	TX+	1	TX+	1	TX+
B22	Blue/Black	RX-	2	TX-	2	TX-	2	TX-
B23	Black/Orange	TX+	3	RX+	3	RX+	3	RX+
B24	Orange/Black	TX-	6	RX-	6	RX-	6	RX-
Port 5/17			Pin		Pin		Pin
B17	Red/Brown	RX+	1	TX+	1	TX+	1	TX+
B18	Brown/Red	RX-	2	TX-	2	TX-	2	TX-
B19	Red/Gray	TX+	3	RX+	3	RX+	3	RX+
B20	Gray/Red	TX-	6	RX-	6	RX-	6	RX-

Page A-6

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Cabletron Systems SEHI-32, SEHI-22, SEHI-24, SEHI-34 manual A-6

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 Related Manuals Daughter Board Upgrade KitRack Mount or Wall Mount Hardware 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 AUI 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 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 Cycling Through OIDs Walking Through OIDsStepping 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 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 Plate Figure A-1. Punch Down Block A-9 German Power Supply CordSpanish French