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Cabletron Systems HubSTACK SEHI-34 User Manual

10base-t intelligent stackable hub
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SEHI-22, SEHI-24, SEHI-32, AND SEHI-34
10BASE-T INTELLIGENT STACKABLE HUB
USER'S GUIDE
The Complete Networking Solution™
CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505

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Summary of Contents for Cabletron Systems HubSTACK SEHI-34

  • Page 1 SEHI-22, SEHI-24, SEHI-32, AND SEHI-34 10BASE-T INTELLIGENT STACKABLE HUB USER’S GUIDE The Complete Networking Solution™ CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03867-0505...
  • Page 2 NOTICE NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made.

  • Page 3: Fcc Notice

    NOTICE FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 4: Program License Agreement

    PROGRAM LICENSE AGREEMENT IMPORTANT: Before utilizing this product, carefully read this License Agreement. This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”) that sets forth your rights and obligations with respect to the Cabletron software program (the “Program”) contained in this package.
  • Page 5 7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35 Industrial Way. Rochester, New Hampshire 03867...

  • Page 6: Table Of Contents

    TABLE OF CONTENTS APPENDIX A TABLE OF CONTENTS v CHAPTER 1 INTRODUCTION USING THIS MANUAL ... 1-1 GETTING HELP... 1-2 SEHI OVERVIEW ... 1-2 SEHI FEATURES ... 1-3 STACKABLE CAPABILITIES ... 1-4 REMOTE NETWORK MANAGEMENT CAPABILITIES ... 1-4 OPTIONAL FEATURES ... 1-5 RELATED MANUALS ...
  • Page 7 CONTENTS OPERATING SPECIFICATIONS ...2-17 CHAPTER 3 INSTALLATION UNPACKING THE SEHI ...3-1 INSTALLING THE SEHI ...3-1 3.2.1 Stacking the SEHI...3-2 3.2.2 Attaching the Strain Relief Bracket...3-4 3.2.3 Rack Mounting the SEHI...3-5 3.2.4 Wall Mounting the SEHI ...3-6 3.2.5 Free-Standing Installation...3-7 CONNECTING THE SEHI TO THE POWER SOURCE...3-8 CHAPTER 4 CONNECTING TO THE NETWORK CONNECTING THE SEHI TO THE NETWORK...4-1 4.1.1...
  • Page 8 CONTENTS APPENDIX B TWISTED PAIR WIRING TABLES A-1...

  • Page 9: Chapter 1 Introduction

    INTRODUCTION CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems SEHI-22, SEHI-24, SEHI-32, and SEHI-34 10BASE-T Intelligent Stackable Hub User’s Guide. This manual explains installation instructions and provides reference information for the SEHI-22, 24, 32, and 34. Note: The term SEHI (Stackable Ethernet Hub with Intelligence) is used throughout this manual when describing features and functions that are common to the SEHI-22, 24, 32, and 34.

  • Page 10: Getting Help

    INTRODUCTION 1.2 GETTING HELP If you need additional support related to the Cabletron Systems SEHI, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone ... (603) 332-9400 ® By CompuServe ...

  • Page 11: Sehi Features

    The SEHI-22/24 and SEHI-32/34 are functionally identical with the exception of the network ports: • SEHI-22, 12 RJ45 network ports and one EPIM port. • SEHI-24, 24 RJ45 network ports and two EPIM ports. • SEHI-32, one 50 pin Champ connector, providing 12 twisted pair segments, and one EPIM port.

  • Page 12: Lanview Leds

    1.6 REMOTE NETWORK MANAGEMENT CAPABILITIES You can manage the SEHI remotely by any SNMP network management system. Cabletron Systems offers the following remote management packages: • Cabletron Systems SPECTRUM • Cabletron Systems Remote LANVIEW •...

  • Page 13: Optional Features

    The following features are not included with the SEHI but can be purchased separately from Cabletron Systems. Ethernet Port Interface Modules (EPIMs) EPIMs let you expand your network through a variety of media. Cabletron Systems offers the EPIMs shown in Table 1-1. EPIM EPIM-A EPIM-C...

  • Page 14: Related Manuals

    The part number for the accessory package is SEHI-ACCY-KIT. 1.8 RELATED MANUALS Use the Cabletron Systems SEH-22/24 and SEH-32/34 User’s Guide to supplement the procedures and other technical data provided in this manual. The procedures contained in the SEH-22/24 and SEH-32/34 User’s Guide are referenced where appropriate, but...

  • Page 15: Chapter 2 Installation Requirements/Specifications

    INSTALLATION REQUIREMENTS/SPECIFICATIONS CHAPTER 2 INSTALLATION REQUIREMENTS/SPECIFICATIONS This Chapter describes cabling requirements, network guidelines, and operating specifications for the SEHI. Be sure to read this chapter before you install the SEHI. Your network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from this equipment.

  • Page 16: Utp And Stp Cable Specifications For The Network Ports And Epim-T Module

    Impedance Cabletron Systems 10BASE-T Twisted Pair products will work on twisted pair cable with 75 to 165 ohms impedance. Unshielded twisted pair cables typically have an impedance of between 85 to 110 ohms.
  • Page 17 INSTALLATION REQUIREMENTS/SPECIFICATIONS Delay The maximum propagation delay of a 10BASE-T link segment must not exceed 1000 nsec. This 1000 nsec. maximum delay limits the maximum link segment length to no greater than 200 meters. Crosstalk Crosstalk is caused by signal coupling between the different cable pairs contained within a multi-pair cable bundle.

  • Page 18: Multimode Fiber Optic Cable Specifications For The Epim-F1 And Epim-F2 Modules

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.1.3 Multimode Fiber Optic Cable Specifications for the EPIM-F1 and EPIM-F2 Modules Table 2-1 shows Multimode Fiber Optic Cable specifications for the EPIM-F1 and EPIM-F2 modules. Table 2-1. Multimode Fiber Optic Cable Specifications Cable Type Attenuation 50/125 m 13.0 dB or less 62.5/125 m 16.0 dB or less...

  • Page 19: Single Mode Fiber Optic Cable Specifications For The Epim-F3 Module

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.1.4 Single Mode Fiber Optic Cable Specifications for the EPIM-F3 Module Table 2-2 shows Single Mode Fiber Optic Cable specifications for the EPIM-F3. Table 2-2. Single Mode Fiber Optic Cable Specifications Cable Type 8/125-12/125 m Attenuation You must test the fiber optic cable with a fiber optic attenuation test set adjusted for an 1300 nm wavelength.

  • Page 20: Thin-Net Network Requirements For The Epim-C Module

    finished wall plates with BNC feed-throughs, then a reduced number of host connections may be required. For special network design, contact Cabletron Systems Technical Support. Grounding For safety, ground only one end of a thin-net segment. Do NOT connect EPIM BNC ports to earth ground.

  • Page 21: Aui Cable Requirements For The Epim-A And Epim-X Modules

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.1.6 AUI Cable Requirements for the EPIM-A and EPIM-X Modules When you connect an external network segment to the SEHI (via an EPIM-A or EPIM-X), the AUI cable must meet the following requirements: AUI Cable The AUI cable connecting the module to a device must be IEEE 802.3 type cable.

  • Page 22: Sehi-22 And Sehi-24 Network Port Specifications

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.2.1 SEHI-22 and SEHI-24 Network Port Specifications The SEHI-22 and SEHI-24 provide RJ45 connections for network connections. Figure 2-1 shows the RJ45 pinouts. 1 2 3 4 5 6 7 8 Figure 2-1. RJ45 Network Ports 2.2.2 SEHI-32 and SEHI-34 Network Port Specifications The SEHI-32 and SEHI-34 provide 50 pin Champ connectors for network connections as shown in Figure 2-2.
  • Page 23 INSTALLATION REQUIREMENTS/SPECIFICATIONS Table 2-3. Champ Connector Pinouts 50 Pin Champ Connector Signal Wire Color RX 1- Blue/White TX 1- Orange/White RX 2- Green/White TX 2- Brown/White RX 3- Gray/White TX 3- Blue/Red RX 4- Orange/Red TX 4- Green/Red RX 5- Brown/Red TX 5- Gray/Red...

  • Page 24: Epim Specifications

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.3 EPIM SPECIFICATIONS EPIMs let you connect the SEHI to the main network using different media types. Cabletron Systems offers a variety of EPIMs. The following sections explain specifications for each EPIM. 2.3.1 EPIM-T The EPIM-T is an RJ45 connector supporting UTP cabling. It has an internal Cabletron Systems TPT-T™...

  • Page 25: Epim-F1 And Epim-F2

    2.3.2 EPIM-F1 and EPIM-F2 The EPIM-F1 and EPIM-F2 shown in Figure 2-4 support Multimode Fiber Optic cabling. Each EPIM has an internal Cabletron Systems FOT-F™ Fiber Optic Transceiver. The EPIM-F1 is equipped with SMA Connectors and the EPIM-F2 is equipped with ST Connectors.

  • Page 26: Epim-F3

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.3.3 EPIM-F3 The EPIM-F3 shown in Figure 2-5 supports Single Mode Fiber Optic cabling. It has an internal Cabletron Systems FOT-F™ Fiber Optic Transceiver and is equipped with ST Connectors. Specifications for the EPIM-F3 are listed below. Note: Transmitter Power decreases as temperatures rise and increases as temperatures fall.

  • Page 27: Duty Cycle

    INSTALLATION REQUIREMENTS/SPECIFICATIONS Receive Sensitivity Maximum Receive Input Power Transmitter Power* (At 25 C into 8.3/125 m fiber) Less Power * Transmit Power Typical Power Coefficient (See Note Below)-0.15dBm/ Parameter Transmitter Peak Wave Length Spectral Width Rise Time/ Fall Time Duty Cycle Bit Error Rate: Note: The transmitter power levels given above are Peak Power Levels after optical overshoot.

  • Page 28: Epim-C

    2.3.4 EPIM-C The EPIM-C supports thin-net coaxial cabling and is equipped with an internal Cabletron Systems TMS-3™ Transceiver. You can use the TERM switch on the front of the EPIM-C to set the internal 50 Ohm terminator. This eliminates the need to connect the port to a tee-connector and terminator.

  • Page 29: Epim-A And Epim-X (Aui Port)

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.3.5 EPIM-A and EPIM-X (AUI Port) The EPIM-A is a DB15 female connector used to attach segments to an external transceiver. The EPIM-X is equipped with dual internal transceivers. It has a DB15 male connector used to attach segments to an AUI cable.

  • Page 30: Com Port Requirements

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.4 COM PORT REQUIREMENTS The RJ45 COM port supports access to a Local Management Console. The Console port supports a Digital Equipment Corporation, VT 320™ terminal or PC emulation of the VT 320™ terminal. Figure 2-8 shows the pinouts for the RJ45 COM port. 1.

  • Page 31: Operating Specifications

    INSTALLATION REQUIREMENTS/SPECIFICATIONS 2.6 OPERATING SPECIFICATIONS The operating specifications for the SEHI are described in this section. Cabletron Systems reserves the right to change these specifications at any time without notice. GENERAL Operating System Memory: Internal Processor: Ethernet Controller: Non-Volatile RAM:...

  • Page 32: Power Supply Requirements

    INSTALLATION REQUIREMENTS/SPECIFICATIONS JAM Output: Fragment Extension: Fault Protection: POWER SUPPLY REQUIREMENTS Note: The SEHI has a universal power supply. This unit allows you to use an input power from 90 to 264 VAC, 47-63 Hz. The power supply has two outputs of +5 volts and +12 volts. The maximum output power is 40 watts and the minimum efficiency is 65% under all conditions of line at full load.

  • Page 33: Environmental Requirements

    INSTALLATION REQUIREMENTS/SPECIFICATIONS ENVIRONMENTAL REQUIREMENTS Operating Temperature: Non-operating Temperature: Operating Humidity: SAFETY This unit meets the safety requirements of UL 1950, CSA C22.2 No. 950, and EN 60950; the EMI requirements of FCC Class A and EN 55022 Class A; and the EMC requirements of EN 50082-1. Warning: It is the responsibility of the person who sells the system to which the SEHI will be a part to ensure that the total system meets allowed limits of conducted and radiated emissions.

  • Page 34: Chapter 3 Installation

    Cabletron Systems Technical Support immediately. 4. Read the SEHI Release Notes included in the shipping box. Note: Cabletron Systems includes a 3-1/2" disk with the SEHI. This disk contains a backup copy of the SEHI’s Flash Firmware Image File.

  • Page 35: Stacking The Sehi

    3.2.1 Stacking the SEHI The rear panel of the SEHI has an Interconnect Bus Out Port (male connector). You daisy chain units together using Cabletron Systems’ HubSTACK Interconnect cables. Table 3-1 describes each cable. Table 3-1. HubSTACK Interconnect Cables...
  • Page 36 To stack the SEHI together with an SEH non-intelligent hub: 1. Attach the SEHI HubSTACK Interconnect cable to the “OUT” port on the rear panel of the SEHI as shown in Figure 3-1. 2. Attach the other end of the SEHI HubSTACK Interconnect cable to the “IN”...

  • Page 37: Attaching The Strain Relief Bracket

    INSTALLATION If you disconnect one end of a HubSTACK Interconnect cable and leave the other end attached to the hub, ensure that you disconnect the cable from the OUT port as shown in Figure 3-2. This ensures that the HubSTACK Interconnect cable is terminated properly. SEH-24 10BASE-T HUB SEH-24...

  • Page 38: Rack Mounting The Sehi

    3.2.3 Rack Mounting the SEHI Refer to Figure 3-4 and perform these steps to install the SEHI in a 19-inch rack. 1. Remove four cover screws (two from each side) located along the front edges of each side of the SEHI. 2.

  • Page 39: Wall Mounting The Sehi

    INSTALLATION 3.2.4 Wall Mounting the SEHI When you wall mount the SEHI, the cable connections must face down. Refer to Figure 3-6 and perform the following steps to wall mount the SEHI. Note: 1/4-inch Molly screw anchors for wall mounting are not included with the SEHI-ACCY-KIT package.

  • Page 40: Free-Standing Installation

    3. You will need a pencil for this step. With the wall mounting brackets attached to the SEHI, position the SEHI against the wall where it will be permanently mounted with the network port facing down. Use the pencil to mark the wall location for the four pilot holes.

  • Page 41: Connecting The Sehi To The Power Source

    INSTALLATION 3.3 CONNECTING THE SEHI TO THE POWER SOURCE Note: The SEHI has a universal power supply. This allows you to connect the SEHI to power sources from 90 Vac to 264 Vac, 47-63 Hz. To connect the SEHI to the power source: 1.

  • Page 42: Connecting To Network Ports, Sehi-22 And Sehi-24

    CONNECTING TO THE NETWORK This chapter outlines the procedure for connecting the SEHI to your network. Ensure that your network meets the guidelines and requirements outlined in Chapter 2, Installation Requirements/ Specifications, before installing the SEHI to your network. 4.1 CONNECTING THE SEHI TO THE NETWORK The procedure for connecting network segments to the SEHI varies depending on the media and ports being connected.

  • Page 43: Connecting To The Network

    Verify that the RJ45 connector on the twisted pair segment has the proper pinouts. Check the cable for continuity. Check that the twisted pair connection meets dB loss and cable specifications outlined Chapter 2. If a link still has not been established, contact Cabletron Systems Technical Support. Page 4-2...

  • Page 44: Connecting To Network Ports, Sehi-32 And Sehi-34

    4.1.2 Connecting to Network Ports, SEHI-32 and SEHI-34 The SEHI-32 has a 50-pin Champ connector, while the SEHI-34 has two 50-pin Champ connectors. This configuration of the SEHI allows you to run a 50-pin feeder cable from the SEHI to a punch down block. Each Champ connector supports 12 10BASE-T, twisted pair segments.

  • Page 45: Connecting A Utp Segment To An Epim-T

    Check that the 10BASE-T device and the SEHI have power. b. Verify the cabling between the SEHI and the 10BASE-T device. Check the cable for continuity. If a link has not been established, contact Cabletron Systems Technical Support. 4.1.3 Connecting a UTP Segment to an EPIM-T...

  • Page 46: Connecting A Fiber Optic Link Segment To An Epim-F1

    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. 4.1.4 Connecting 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...
  • Page 47 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.
  • Page 48 F1/F2 SMA 905 Connectors Figure 4-4. The EPIM-F1, EPIM-F2 and EPIM-F3 3. Attach the fiber labeled 2 to the applicable transmit port labeled TX, on the module. 4. At the other end of the fiber optic cable, attach the fiber labeled 1 to the transmit port of the device.

  • Page 49: Connecting A Thin-Net Segment To An Epim-C

    Verify that the fiber connection meets the dB loss specifications outlined in Chapter 2. If a link still has not been established, contact Cabletron Systems Technical Support. 4.1.5 Connecting a Thin-Net Segment to an EPIM-C...
  • Page 50 Connect a terminated thin-net segment to other female connector of tee-connector. CONNECTING TO THE NETWORK Attach thin-net segment directly to BNC connector when internal termination switch is set to on ( ). Figure 4-5. The EPIM-C Page 4-9...

  • Page 51: Connecting An Aui Cable To An Epim-A

    CONNECTING TO THE NETWORK 4.1.6 Connecting an AUI Cable to an EPIM-A Caution: Ensure that the external transceiver to which the SEHI will be connected does not have the signal quality error (SQE or “heartbeat”) test function enabled. The SEHI will not operate if the transceiver has the SQE test function enabled, and the network will be unusable.

  • Page 52: Connecting An Aui Cable To An Epim-X

    1. Check that the SQE LED on the EPIM-X is off. If the SQE LED is on, check the position of the SQE switch. Note: If the SQE light remains on, even though the SQE switch is in the OFF position, contact Cabletron Technical Support.

  • Page 53: Finishing The Installation

    CONNECTING TO THE NETWORK ON Position (Toward Back of EPIM) OFF Position (Toward Front of EPIM) 4.2 FINISHING THE INSTALLATION The SEHI is now ready for operation. Before placing the network into service, test the installation thoroughly, making sure that you can address all stations and that the SEHI and all stations are indicating normal operation.

  • Page 54: Chapter 5 Troubleshooting

    This chapter contains instructions for using LANVIEW LEDs to troubleshoot physical layer network problems. It also describes how to reset the SEHI. 5.1 INSTALLATION CHECK-OUT After you connect the SEHI to the network, verify that packets pass between all Ethernet devices connected to the SEHI and any other devices connected to the network.

  • Page 55: Using Lanview

    The affected port remains segmented until a good packet is transmitted/ received without collisions. If the LNK LED is still not on, contact Cabletron Systems Technical Support. 5.2 USING LANVIEW The SEHI incorporates the Cabletron Systems LANVIEW Status Monitoring and Diagnostics System.
  • Page 56 HubSTACK 10BASE-T HUB SEHI-24 RESET LED NAME (Power) (Central Processing Unit) (Collision) (Receive) (Link) Note: “Flashing” indicates an irregular LED pulse. “Blinking” indicates a steady LED pulse. When this green LED is on it indicates that the SEHI is receiving power.

  • Page 57: Using The Reset Button

    TROUBLESHOOTING This red LED indicates that a collision has occurred on one of the ports. When this yellow LED flashes, it indicates that the SEHI is receiving data packets from the associated port segment. Each SEHI port has a corresponding RCV LED: •...

  • Page 58: Chapter 6 Local Management

    LOCAL MANAGEMENT This chapter explains how to set up a management terminal to access the SEHI’s Local Management. It also explains how to use the Local Management screens and commands. Local Management supplies the tools to manage the SEHI and all of its attached segments.

  • Page 59: Management Terminal Requirements

    LOCAL MANAGEMENT 6.1 MANAGEMENT TERMINAL REQUIREMENTS To access Local Management you need one of the following: • a Digital Equipment Corporation VT series terminal • a VT type terminal running emulation programs for the Digital Equipment Corporation VT series • an IBM or compatible PC running a VT series emulation software package.

  • Page 60: Console Cable Configuration

    6.1.1 Console Cable Configuration Use the RJ45 Cable Kit provided with the SEHI-ACCY-KIT package to attach the management terminal to the SEHI’s COM port as shown in Figure 6-1. Connect the console cable to the SEHI as follows: 1. Attach the male RJ45 connector to the COM port of the SEHI. 2.

  • Page 61: Management Terminal Setup Parameters

    LOCAL MANAGEMENT 6.1.2 Management Terminal Setup Parameters Table 6-1 lists the setup parameters for the local management terminal. If your terminal is a Digital Equipment Corporation VT320™ terminal, press F3 to access the Setup Directory. If you have a terminal emulation of the VT320™, refer to your equipment user manual for setup procedures.

  • Page 62: Accessing Local Management

    Cabletron SEHI Revision X.XX.XX Cabletron Systems Incorporated 35 Industrial Way, P .O. Box 5005 Rochester, NH 03867-0505 U.S.A. (603) 332-9400 (c) Copyright Cabletron Systems, Inc. 1993 SEHI F/W Version: X.XX.XX Boot Prom Version: X.XX.XX SEHI Board Version: X.X EnterUser Password: Figure 6-2.
  • Page 63 Management session ends and the screen defaults to the Password screen. Figure 6-3. Feature Selection Screen Page 6-6 SEHI LOCAL MANAGEMENT Cabletron Systems Incorporated P .O. Box 5005 Rochester, NH 03867-0505 U.S.A. (603) 332-9400 FEATURE SELECTION COMMUNITY NAME TABLE IP ADDRESS ASSIGNMENT...

  • Page 64: Using The Local Management Screens

    6.3 USING THE LOCAL MANAGEMENT SCREENS The Feature Selection screen is the main menu screen for SEHI Local Management. You can select five screen options in the Feature Selection screen: Community Name Table, IP Address Assignment, Component Trap Table, SNMP Tool Support, and Device Statistics. Use the arrow keys to highlight an option, then press Return (or press the corresponding Function Key).
  • Page 65 LOCAL MANAGEMENT The Community Name Table option lets you set community names. Community names are passwords to Local Management and they are agents of security control to your SEHI. You control SEHI access by establishing up to four different levels of security authorization: Basic-Read, Read-Only, Read-Write, and Super-User.
  • Page 66 Editing the Community Name Field The password that you use to access Local Management at the Password screen must have Super-User privileges for your edits to take effect. If you enter a password with Basic-Read, Read-Only, or Read-Write privileges, Local Management displays the message “AUTHORIZATION PROHIBITS ACCESS”, and does not include editing capabilities.

  • Page 67: The Configuration Screen

    LOCAL MANAGEMENT 6.3.2 The Configuration Screen To access the Configuration screen from the Feature Selection screen, use the arrow keys to highlight the IP Address Assignment option then press the Return key or F7. The Configuration screen shown in Figure 6-5 appears. SAVE Figure 6-5.
  • Page 68 SubNet Mask Displays the subnet mask for the SEHI. A subnet mask is a 32-bit quantity which “masks out” the network bits of the IP address. This is done by setting the bits in the mask to 1 when the network treats the corresponding bits in the IP address as part of the network or subnetwork address, or to 0 if the corresponding bit identifies the host.
  • Page 69 LOCAL MANAGEMENT 4. Use the arrow keys to highlight the SAVE option, then press the Return key or F6. The “SAVED OK” message appears indicating that the changes have been saved to memory. Please note that the first time you try to exit the screen without saving your changes, you will get a “NOT SAVED?”...
  • Page 70 Setting the Default Gateway The Default Gateway field allows you to describe the router through which the SEHI will be forwarding IP packets. To set the Default Gateway: 1. Use the arrow keys to highlight the Default Gateway field. 2. Enter the gateway’s default mask in this field. The format for this entry is XXX.XXX.XXX.XXX with values for XXX being from 0 to 255.

  • Page 71: The Trap Table Screen

    LOCAL MANAGEMENT Exiting the Configuration Screen 1. To exit the Configuration screen, press the appropriate Function key. To return to the Feature Selection screen, use the arrow keys to highlight the RETURN command. 2. Press the Return key. The Feature Selection screen appears. 6.3.3 The Trap Table Screen To access the Trap Table screen from the Features Selection screen, use the arrow keys to highlight the Component Trap Table option,...
  • Page 72 SNMP Community Name Displays the community name to be included in the trap message, which is sent to the Network Management Station with the associated IP address. Traps Enables transmission of the traps to the network management station with the associated IP address. Trap IP Address Indicates the IP address of the workstation to receive trap alarms from the SEHI.

  • Page 73: The Snmp Tools Screen

    LOCAL MANAGEMENT Exiting the Trap Table Screen 1. To exit the Trap Table screen, press the appropriate Function key. To exit to the Feature Selection screen, use the arrow keys to highlight the RETURN command. Press the Return key. The Feature Selection screen appears. 6.3.4 The SNMP Tools Screen This section describes how you can use the SNMP Tools screen to access Management Information Bases (MIBs).
  • Page 74 Figure 6-7. SNMP Tools Screen The following sections describe SNMP Tools screen fields and instructions on how to change them. Community Name Identifies the community name used as a password to determine access level to the MIB component. OID Prepend Specifies the number prefix common to all Object Identifiers (OIDs) found in the MIBs - 1.3.6.1 is the default prefix OID.
  • Page 75 LOCAL MANAGEMENT Walk Scrolls you through a section of the MIB leaf by leaf, from a user-specified object identifier. Leaves are the sections of the OID separated by periods. When a walk is initialized you will see the following categories for each walk entry, or step. Specified OID - gives the number tag for that OID.
  • Page 76 Getting Individual OIDs To get an OID: 1. Highlight GET, using the arrow keys, then press the Return key (or press the F6 function key). “<GET> OID (=|F9)” appears. 2. Enter the OID either by: • using the keyboard to enter the OID minus the OID’s prepend (e.g., if the prepend is 1.3.6.1, and you enter 4.1.3, then the OID=1.3.6.1.4.1.3).
  • Page 77 LOCAL MANAGEMENT Setting an OID To set an OID: 1. Highlight SET, using the arrow keys, then press the Return key (or press the F7 function key). “<SET> OID (=|F9)” appears. 2. Enter the OID, minus the OID’s prepend. If you have previously entered an OID, pressing F9 recalls that entry for you.
  • Page 78 Walking Through OIDs To walk through an OID: 1. Highlight Walk, using the arrow keys, then press the Return key. “<INITIAL> OID (=|F9)” appears. 2. Enter the OID (minus the prepend) and press the Return key. The screen will begin walking through the sublayers of the MIB available from the specified OID.

  • Page 79: The Device Statistics Screen

    LOCAL MANAGEMENT Exiting the SNMP Tools Screen 1. Use the arrow keys to highlight the RETURN command. 2. Press the Return key. The Feature Selection screen appears. 6.3.5 The Device Statistics Screen This section describes the features of the Device Statistics screen. You can view error, collision, and traffic statistics for the stack, a selected module, or a selected port.
  • Page 80 LOCAL MANAGEMENT Bytes Received Displays the number of bytes received. Frames Received Displays the number of frames received. Errors Received Displays the number of errors received. Collisions Displays the number of collisions received. OOW Collisions Displays the number of Out Of Window collisions. OOW collisions are usually caused by the network being too long where the round trip propagation delay is greater than 51.2 sec (the collision domain is...
  • Page 81 LOCAL MANAGEMENT Port Seg. Status Displays the segmentation status of the port selected. The two possible status messages are Segmented or Unsegmented. The SEHI and SEH automatically partition problem segments, and reconnect non-problem segments to the network. Enable Port This command lets you enable the selected port. Disable Port This command lets you Disable the selected port.
  • Page 82 Selecting the Appropriate Module/Port When the Device Statistics screen first appears, statistics are displayed for Module 1 and Port 1. To view statistics for another module and port, use the Module x or Port x commands at the bottom of the screen. To select a module or port: 1.
  • Page 83 LOCAL MANAGEMENT Using the Disable Port Command The Disable Port command lets you Disable the port selected in the Port command. You must first use the Port command to select the desired port. To set the Port Disable command: 1. Use the arrow keys to highlight the Disable Port command at the bottom of the screen.
  • Page 84 TWISTED PAIR WIRING TABLES This appendix contains twisted pair wiring tables which will assist you if you are using a Punch Down Block (see Figure A-1) to wire your twisted pair segments. The following tables are included in this appendix: •...

  • Page 85: Twisted Pair Wiring Tables

    TWISTED PAIR WIRING TABLES Note: Pins 25 and 50 on Champ connector are not used. Table A-1. Twisted Pair Wiring from an SEHI-32/34 to a Punch Down Block From Into and Out of 50 SEHI-32/34 Pin Feeder Cable Port 12/24 48 Violet/Green RX+ 23 Green/Violet RX- 49 Violet/Brown TX+...
  • Page 86 Table A-1. Twisted Pair Wiring from an SEHI-32/34 to a Punch Down Block (Continued) From Into and Out of 50 SEHI-32/34 Pin Feeder Cable Port 8/20 40 Black/Gray 15 Gray/Black 41 Yellow/Blue 16 Blue/Yellow Port 7/19 38 Black/Green RX+ 13 Green/Black RX- 39 Black/Brown TX+ 14 Brown/Black TX- Port 6/18...
  • Page 87 TWISTED PAIR WIRING TABLES Table A-1. Twisted Pair Wiring from an SEHI-32/34 to a Punch Down Block (Continued) From Into and Out of 50 SEHI-32/34 Pin Feeder Cable Port 4/16 32 Red/Orange 33 Red/Green Port 3/15 30 White/Gray 31 Red/Blue Port 2/14 28 White/Green RX+ 29 White/Brown TX+...
  • Page 88 Table A-2. Twisted Pair Wiring from a Punch Down Block to a 10Base-T Device From Punch Down Block Port 12/24 B45 Violet/Green B46 Green/Violet B47 Violet/Brown B48 Brown/Violet Port 11/23 B41 Violet/Blue B42 Blue/Violet B43 Violet/Orange B44 Orange/Violet Port 10/22 B37 Yellow/Brown B38 Brown/Yellow B39 Yellow/Gray...
  • Page 89 TWISTED PAIR WIRING TABLES Table A-2. Twisted Pair Wiring from a Punch Down Block to a 10Base-T Device (Continued) From Punch Down Block Port 8/20 B29 Black/Gray B30 Gray/Black B31 Yellow/Blue B32 Blue/Yellow Port 7/19 B25 Black/Green B26 Green/Black B27 Black/Brown B28 Brown/Black Port 6/18 B21 Black/Blue...
  • Page 90 Table A-2. Twisted Pair Wiring from a Punch Down Block to a 10Base-T Device (Continued) From Punch Down Block Port 4/16 B13 Red/Orange B14 Orange/Red B15 Red/Green B16 Green/Red Port 3/15 White/Gray B10 Gray/White B11 Red/Blue B12 Blue/Red Port 2/14 White/Green Green/White White/Brown...
  • Page 91 TWISTED PAIR WIRING TABLES Table A-3. Twisted Pair Wiring Summary SEHI-32/34 Punch Champ Down Block Port 12 48 RX+ A45 RX+ 23 RX- A46 RX- 25 Pin Feeder 49 TX+ A47 TX+ Cable 24 TX- A48 TX- Port 11 46 RX+ A41 RX+ 21 RX- A42 RX-...
  • Page 92 TWISTED PAIR WIRING TABLES Figure A-1. Punch Down Block Page A-9...

  • Page 93: Power Supply Cord

    POWER SUPPLY CORD The mains cord used with this equipment must be a 2 conductor plus ground type with minimum 0.75 mm square conductors and must incorporate a standard IEC appliance coupler on one end and a mains plug on the other end which is suitable for the use and application of the product and that is approved for use in the country of application.

This manual is also suitable for:

Sehi-22Sehi-24Sehi-32

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