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Compaq Netelligent 2524 User Manual
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Compaq Netelligent 2524 User Manual

Compaq Netelligent 2524 User Manual

100base-t repeaters
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  • Page 2 1996 Compaq Computer Corporation. All rights reserved. Printed in the U.S.A. Compaq Registered United States Patent and Trademark Office. Netelligent is a trademark of Compaq Computer Corporation. Compaq Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide First Edition (December 1996) Part Number 283318-001...

  • Page 3: Federal Communications Commission Notice

    This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Avis Canadien Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada. Compaq Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 4 ......Federal Communications Commission Notice Modifications The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by Compaq Computer Corporation may void the user's authority to operate the equipment.

  • Page 5: Japanese Notice

    EN55022 (CISPR 22) - Electromagnetic Interference EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic Immunity UL 1950, Second Edition; CAN/CSA C22.2 No. 950-93; TUV Rheinland EN 60950; and 1988 + A1/1990+A2/1991 - Product Safety Japanese Notice Compaq Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 6: Product Label

    IEC 825-1 Test Standard and found to meet the Class 1, intrinsically eye-safe emitter classification. The non-volatile RAM (NVRAM) chip on the motherboard of the Netelligent 2524/2624 100Base-T repeater contains a non-replaceable lithium battery. Only trained service personnel should dispose of this chip.

  • Page 7: Table Of Contents

    Extending Your Network with Smart Uplink Modules ...1-17 Smart Uplink Configuration Examples...1-18 Smart Uplink Configuration 1 (Models 2524/2624)...1-19 Smart Uplink Configuration 2 (Models 2524/2624)...1-20 Smart Uplink Configuration 3 (Model 3612) ...1-21 Smart Uplink Configuration 3 (Model 3612) ...1-21 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 8 Smart Uplink Configuration 4 (Model 2624)...1-22 Smart Uplink Configuration 5 (Model 3612)...1-23 Chapter 2 Planning Repeater Installation Optional Hardware ...2-1 Installation Requirements...2-1 Environmental Requirements...2-1 Electrical Requirements ...2-2 Spatial Requirements ...2-2 Cable Requirements ...2-3 Understanding Fast Ethernet Cable Budgets...2-3 Checking Your Cable Budget ...2-4 Cable Types and Distance Limitations ...2-5 Smart Uplink Port Cable ...2-8 Modem Cable...2-8...
  • Page 9 Deleting a Backup Port Entry...4-13 Updating the State of a Backup Port Entry ...4-13 Error Messages ...4-14 Viewing Port Statistics...4-15 Viewing Port Group Statistics...4-16 Changing Your Password...4-18 Error Messages ...4-18 Downloading Firmware ...4-19 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 10 Error Messages ...4-20 Setting Up the Modem ...4-21 Logging Out of the Management Session...4-22 RMON Support (Model 3612) ...4-23 Statistics Group ...4-23 History Group ...4-23 Alarm Group ...4-24 Event Group ...4-24 Intrusion Protection (Model 3612)...4-25 Changing the Status of a Port...4-25 Security ...4-26 Appendix A Specifications...
  • Page 11 Preface This guide contains information about how to install, operate, and manage the Compaq Netelligent 2524/2624 and 3512/3612 100Base-T repeaters. We recommend that you read all chapters in this guide to become familiar with the repeater's features and to ensure a successful installation.

  • Page 12: Overview

    Chapter 1 Overview Compaq Netelligent 2524, 2624, 3512, and 3612 100Base-T repeaters are designed to bring reliable 100 Mb/s performance to your desktop. Compaq Smart Uplink technology lets you interconnect managing versions of these repeaters (Models 2624 and 3612) to increase the diameter of your network beyond the normal limitations set by 100Base-T Class 1 specifications.
  • Page 13 ......Overview Smart Uplink capability extends the distance between repeaters to up to 100 meters/328 feet (or 412 meters/1352 feet with fiber).

  • Page 14: Package Contents

    Package Contents Before you start to install the repeater, verify that the package contains the following items: Netelligent 2524, 2624, 3512, or 3612 100Base-T repeater Shielded AC power cord Rack-mount kit (two side-mounting brackets, eight 3/8-inch bracket screws, and four 1/2-inch rack mount screws)
  • Page 15 Overview (2624 Only) COM PORT (3612 Only) COM PORT Power Cord Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide User Guide Optional Parts, Ordered Separately Smart Uplink Modules ACTIVITY 100Base-TX COLLISION 100BASE-TX SMARTUP - TX ACTIVITY 100Base-FX (ST) COLLISION 100BASE-FX...

  • Page 16: Repeater Components

    PWR A PWR B MGMT STATUS Collision, Backplane 1, Backplane 2, and Backplane 3 LEDs Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide Smart Uplink Module Port (Model 2624 only) RJ-45 Ports and Link Status LEDs Smart Uplink Module Slot...
  • Page 17 EXPN PORT B 68-Pin Backplane Connectors 2524 Repeater Back Panel HOST TARGET DIP Switch Factory Default Settings TARGET/MAN 3512/3612 Repeater Back Panel PWR A PWR B DOWN Main Power Supply Redundant Power Supply Hub Expansion Ports Figure 1-3. Repeater Back Panels...

  • Page 18: Led Indicators

    (POST). The POST lasts approximately 1 minute, depending on the amount of DRAM installed in the repeater (see Appendix C “Upgrading the DRAM”). After the POST, all LEDs automatically change to their operational modes. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 19 TARGET and the other to HOST. Flashing Green The 2524 repeater dip switch is set to UNM, which overrides the non-volatile port HUB STATUS enables from the 2624 managing repeater. Reset the 2524 dip switch to MAN. (Models 2524...

  • Page 20: Rj-45 Ports

    100Base-T repeaters or stacks. Smart Uplink modules let you extend your network without the usual repeater hop limitations inherent with Class I repeaters. Figure 1-4 shows the Smart Uplink modules. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 21: Serial Com Port (2624 And 3612 Repeaters)

    VT100 console interface for basic management SLIP (Serial Line Internet Protocol) transfers, including: 2524/2624 100Base-T Class I Repeater Smart Uplink Module Port HUB STATUS 3512/3612 100Base-T Class I Repeater Smart Uplink Module Slot RJ-45 Ports and LEDs Collision, Backplane 1,...

  • Page 22: Power Supply

    History, Alarm, and Event RMON groups) and TFTP Flash downloads Power Supply Netelligent 2524 and 2624 repeaters have an internal 110-watt power supply. Netelligent 3512 and 3612 repeaters have a single 90-watt power supply (Part No. 267322-001). If desired, you can purchase another power supply and operate the repeater in a redundant power supply configuration.

  • Page 23: Migrating From 10Base-T To Fast Ethernet

    1-12 Overview Dip Switches (Models 2524 and 3512/3612) The repeaters contain two external (Model 2524) or four internal (Models 3512/3612) dip switches. The functions of these switches, which differ for each model, are briefly described below. For more information about the 2524 dip switch settings, see “Dip Switch Settings”...
  • Page 24 Figure 1-7 shows an example of a network configuration that incorporates both 10Base-T and Fast Ethernet equipment, using a 2624 100Base-TX repeater. Figure 1-7. Integrating Fast Ethernet with 10Base-T Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 1-13...

  • Page 25: Fast Ethernet Repeater Management

    1-14 Overview Fast Ethernet Repeater Management Netelligent 2624 and 3612 repeaters contain a Management Daughtercard (MDC100) that provides SNMP management through both in-band and out-of- band communications. The 2624 uses a host/target management architecture. The 3612 repeater uses a host/target management architecture in conjunction with the repeater hardware to provide four-group RMON support (Statistics, History, Alarm, and Event) in a stack of 100Base-T repeaters.

  • Page 26: 100Base-T Repeater Expansion

    ......1-15 100Base-T Repeater Expansion Netelligent 2524/2624 and 3512/3612 repeaters have expansion interfaces on their back panels to allow the interconnection of repeaters within a stack. Expanding 2524 and 2624 Repeaters The 2624 repeater has an expansion interface on the repeater's back panel containing two 68-pin external backplane connectors.
  • Page 27 1-16 Overview PWR A 100-240 VAC, 3A-1.5A,50/60 HZ PWR A 100-240 VAC, 3A-1.5A,50/60 HZ Figure 1-8. FlexPlane Interconnection Management Expansion The FlexPlane connector includes a management bus that enables one managing repeater to manage all other unmanaged 100Base-T repeaters in a stack. All internal stack management is out-of-band so that there is no impact on your network traffic.

  • Page 28: Extending Your Network With Smart Uplink Modules

    Supports multiple repeater hops IEEE 802.3u standards compliant (non-proprietary) uplinks to any available TX, FX (ST), or FX (SC) repeater port SUM Connector FX (ST) FX (SC) Backplane Segment Part Number 267042-001 267043-001 267045-001 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 1-17...

  • Page 29: Smart Uplink Configuration Examples

    1-18 Overview Supports up to 412 meter (1352 feet) fiber uplinks between stacks when a Smart Uplink module is used at each end Connection to repeaters in different repeater stacks, allowing Ethernet traffic to all stacks IMPORTANT: Excessive collisions will occur that will greatly reduce network operations. The 2624 repeater cannot manage repeater stacks that are connected via Smart Uplink modules.

  • Page 30: Smart Uplink Configuration 1 (Models 2524/2624)

    ......1-19 Smart Uplink Configuration 1 (Models 2524/2624) Figure 1-10. Smart Uplink in a 100Base-FX Environment (Model 2624) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 31: Smart Uplink Configuration 2 (Models 2524/2624)

    ......1-20 Overview Smart Uplink Configuration 2 (Models 2524/2624) Figure 1-11. Smart Uplink with 100Base-TX (Models 2524/ 2624)

  • Page 32: Smart Uplink Configuration 3

    100Base-TX Smart Uplink Module 100Base-TX Smart Uplink 100 m 100Base-T4 Repeaters TX Workstation 100 m 100Base-T4 Smart Uplink Module T4 Workstation Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 1-21 TX Workstation Module 100 m T4 Workstation 100 m T4 Workstation...

  • Page 33: Smart Uplink Configuration 4 (Model 2624)

    ......1-22 Overview Smart Uplink Configuration 4 (Model 2624) Figure 1-13. Smart Uplink in a Hierarchical Environment (Model 2624)
  • Page 34 Smart Uplink Module Smart Uplink Module 100 m 100 m 100 m 100 m TX Workstation TX Workstation TX Workstation TX Workstation Figure 1-14. Smart Uplink Modules in a Hierarchical Environment (Models 3512/3612) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 35: Planning Repeater Installation

    Humidity: 5% to 95% (non-condensing) Altitude: 0 to 10,000 feet (0 to 3 km) Clearance: minimum of 2 inches (5.1 centimeters) on each side of the repeater to allow for proper ventilation Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 36: Electrical Requirements

    Planning Repeater Installation Electrical Requirements The electrical requirements for a repeater are as follows: Voltage: 100 to 240 VAC Power: 2524/2624 - 1.7A (@ 100 VAC) to 0.65A (@ 240 VAC) 3512/3612 - 1.5A (@ 100 VAC) to 0.90A (@ 240 VAC) Frequency: 50 to 60 Hz CAUTION: source.

  • Page 37: Cable Requirements

    PC) in a single network segment. With Fast Ethernet, the cable budget is affected by the type of network media between two DTEs and the class of repeater used. The Netelligent 2524/2624 and 3512/3612 100Base-TX repeaters are Class I repeaters.

  • Page 38: Checking Your Cable Budget

    Planning Repeater Installation Checking Your Cable Budget The following sections state the cabling distance limitations, cable budget, for 100Base-TX and 100Base-FX. However, if your particular network installation deviates from these examples, use the following guidelines to check your DTE- to-DTE cable budget: Locate the longest DTE-to-DTE cable run and add the lengths of all the cables (UTP and/or fiber) between the two DTEs.

  • Page 39: Cable Types And Distance Limitations

    Two pairs used (same as 10Base-T); other two pairs must be terminated Distance Rules One repeater hop per segment (because the repeater is a Class I repeater) Collision domain diameter (total allowable distance end-to-end) is 200 meters (656 feet) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 40 Planning Repeater Installation Figure 2-2 shows the maximum cable distance for a DTE-to-DTE connection with one repeater in the configuration using 100Base-TX cabling. Figure 2-2. DTE-to-DTE 100Base-TX Connection Figure 2-3 shows a one-to-one cable pinout for 100Base-TX. Figure 2-3. One-to-One Cable Pinout for 100Base-TX NOTE: To prevent potential electromagnetic interference, terminate the unused wires (4, 5, 7, and 8).
  • Page 41 Collision domain diameter (total allowable distance end-to-end) is 272 meters (892 feet) Figure 2-5 shows the maximum cable length for an FX SUM-to-FX SUM fiber connection (412 meters, 1352 feet). Figure 2-5. FX SUM-to-FX SUM (Fiber) Connection Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 42: Smart Uplink Port Cable

    Planning Repeater Installation Figure 2-6 shows the maximum cable distance for a DTE-to-DTE connection with one repeater in the configuration using 100Base-FX cabling. Figure 2-6. DTE-to-DTE 100Base-FX Connection Smart Uplink Port Cable The Smart Uplink module requires the following types of cable: TX Type (Part Number 267045-001) (UTP or STP), Category 5 FX (ST) Type (Part Number 276042-001)

  • Page 43: System Planning Charts

    Building Location Rack Mount Table Mount MAC Address IP Address Installed Uplink Module None FX (ST Type) FX (SC Type) Figure 2-7. 2524/2624 Repeater Setup and Cabling Chart Date Port Connects To Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 44 2-10 Planning Repeater Installation 3512/3612 Repeater Setup and Cabling Chart Unit Number Building Location Rack Mount Table Mount MAC Address IP Address Installed Uplink Module None FX (Fiber) Installed Redundant Power Supply Module Figure 2-8. 3512/3612 Repeater Setup and Cabling Chart Date Port Connects To...
  • Page 45 ......2-11 Figure 2-9. Rack Inventory Chart Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 46: Installing The Repeater

    NOTE: Be sure to allow at least 2 inches (5.1 cm) on each side of the repeater for proper air flow. Rack-Mounting the Repeater To mount the repeater in a rack, use the supplied mounting brackets, 3/8-inch bracket screws, and 1/2-inch rack-mount screws. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 47 Installing the Repeater To rack mount the repeater, follow these steps: 1. Position the right bracket as shown in Figure 3-1 and attach it to the repeater using four of the smaller, 3/8-inch bracket screws. Then tighten the screws. Repeat this step to attach the left mounting bracket. Figure 3-1.

  • Page 48: Installing A Smart Uplink Module

    To insert a Smart Uplink Module into a Netelligent 2624 or 3512/3612 repeater, follow these steps: 1. Power down the repeater by disconnecting the power cord from the wall outlet or power cord strip. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 49 Installing the Repeater 2. Remove the Smart Uplink port cover plate from the 2624 or 3512/3612 repeater's front panel. 3. Insert the Smart Uplink module through the port hole, aligning the sides of the SUM with the card guides inside the repeater (Figure 3-4). CAUTION: Do not tighten the Smart Uplink Module’s spring screws until completing Step 4 of this procedure.

  • Page 50: Connecting Twisted-Pair Cable

    Figure 3-5. Connecting Twisted-Pair Cable Interconnecting Repeaters You connect 2524/ 2624 and 3512/3612 repeaters in somewhat different ways. Each method is described below. NOTE: You cannot mix 2524/ 2624 and 3512/3612 repeaters in the same stack. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 51: Interconnecting 2524/2624 Repeaters

    Installing the Repeater Interconnecting 2524/2624 Repeaters You can interconnect one or two 2524 repeaters with one 2624 100Base-T repeater to form one logical repeater stack that supports up to 72 Fast Ethernet ports. You can also interconnect two 2524 repeaters to form one logical repeater stack that supports up to 48 Fast Ethernet ports.

  • Page 52: Host/Target

    Lets you connect two 2524 repeaters in an unmanaged stack to form a single 48-port Fast Ethernet repeater (with no 2624 repeater in the stack). One repeater must be re-configured as the HOST and the other as the TARGET. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 53: Invalid Connections

    Ports 1 and 2, then power down the stack, Ports 1 and 2 will still be disabled when the stack is powered up again. In a managed stack, if you set the 2524 dip switch to UNM, the HUB STATUS LED on the 2524 FLASHES GREEN.
  • Page 54 EXPN PORTs. The dip switches on the 2524 repeaters are set with the top repeater as the HOST and the bottom repeater as the TARGET. Figure 3-7. Interconnecting Two 2524 Repeaters Via a Backplane Connection Cable Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 55: Interconnecting 3512/3612 Repeaters

    3-10 Installing the Repeater In this example, the unmanaged stack consists of the maximum of two 2524 repeaters. The top repeater has been set to HOST, while the bottom repeater is the TARGET. Either repeater in the stack can be the HOST or the TARGET. Both repeaters are in the factory-default MAN mode.

  • Page 56: Connecting Power

    If the POST fails, the STATUS LED flashes yellow. If this occurs, disconnect the repeater from power and then reconnect power. If the problem continues, contact Compaq Technical Support. Plugging in the power cord applies power to the repeater. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 3-11...

  • Page 57: Disconnecting Power

    ......3-12 Installing the Repeater Disconnecting Power To disconnect power from the repeater, remove the power cord from the power source.

  • Page 58: Repeater Management

    Netelligent 2624 and 3612 repeaters support the following frame types: Supported Frame Types Ethernet SNAP (IP) Supported MIBs Model 2624 Yes; CPQN2624 MIB 802.3 Raw (IPX) 802.2 SNAP (IPX) Ethernet_II (IP) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide Model 3612 Yes; MDC100.MIB...

  • Page 59: Nvram

    Hub Management NVRAM Netelligent 2624 and 3612 repeaters store their management configurations (supplied by the SNMP manager or the console manager, VT100 or Telnet) in NVRAM (Non-Volatile RAM). This enables the repeater to recover from a power failure with its full configuration intact.

  • Page 60: Ip Autodiscovery Support

    Using SNMP/IPX and Novell's repeater MIB, Novell's NMS can directly manage the repeater. The repeater also supports SAP (Service Advertising Protocol), RIP (Routing Information Protocol), and IPX diagnostics protocols. These features make the repeater HMI (Hub Management Interface) compliant. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 61: Configuring The Repeater At Bootup

    ......Hub Management Using SAP, the repeater advertises itself as an HSL service. When Novell's NMS initiates autodiscovery, it produces bindery requests through NCP (NetWare Core Protocol) to a NetWare server.

  • Page 62: Using The Vt100 Serial Port/Telnet Management Interface

    In the Boot phase, the HUB STATUS LED is yellow. If you have enabled BOOTP/RARP requests, the repeater issues the number of requests defined in the fsnBootpRarpRetries MIB object in the CPQN2624 MIB (2624) or MDC100 MIB (3612) and displayed in the VT100 console interface). The default number of requests is two.

  • Page 63: Setting Up The Terminal Emulation Program

    Hub Management Boot Mode (HUB STATUS LED is yellow) View and edit system information Download firmware via XMODEM or TFTP (over Ethernet) Set up the modem Change the password Runtime Mode (HUB STATUS LED is green) All the above functions plus:...

  • Page 64: Starting The Management Session

    You start the management session for the 2624 and 3612 repeaters in the same way. When you apply power to the repeater, the Boot phase starts (the HUB STATUS LED is yellow). After about 10 seconds, the HUB STATUS LED changes to green to indicate that the repeater is in the Runtime phase and is ready for the management session.

  • Page 65: Error Messages

    NOTE: The following screen shows the Runtime main menu for a 2624 repeater (the 3612 repeater also contains a Stack Configuration option). If you start the VT100 session while the HUB STATUS LED is orange (less than 1 minute after you power up the repeater), the Boot main menu appears. This menu differs slightly from the Runtime menu.

  • Page 66: Navigating Menu Option Screens

    Connection Description box and set up a New Connection Direct to Com 1. Set the Com 1 Port Settings as described above. From File Properties/Settings, set the Emulation to VT100. The following sections describe each menu option screen. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 67: Viewing System Information

    4-10 Hub Management Viewing System Information The System Information screen shows the primary system identification information. Figure 4-3. System Information Screen You can select the following frame types from the System Information window: IP frame types: Ethernet_II or Ethernet SNAP IPX frame types: 802.2, or 802.3...

  • Page 68: Viewing The Stack Configuration (Model 3612)

    The Managed Status field indicates the status of the repeater’s hardware management override switch setting (see “Appendix B, Internal DIP Switch [Models 3512/3612]”). If the field reads Yes, the switch is at its default (no management override) setting. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 4-11...

  • Page 69: Viewing The Backup Port Configuration

    4-12 Hub Management Viewing the Backup Port Configuration The Backup Port Configuration screen shows information about the slot number of the primary and backup port and the status of the ports. The screen also lets you add, delete, and enable or disable the state of backup port entries.

  • Page 70: Deleting A Backup Port Entry

    1. Press the - or + keys to highlight a backup port entry. 2. Move the cursor to the State entry field. 3. Press the space bar until the desired option (Disabled or Enabled) appears. 4. Press the Enter key. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 4-13...

  • Page 71: Error Messages

    4-14 Hub Management Error Messages The following error messages may appear if you enter information incorrectly in the Backup Port Configuration window: ERROR: Input fields not complete ERROR: Unable to set backup group ERROR: Invalid port number ERROR: Unable to set backup group and port To correct the error, be sure you have correctly entered all the necessary information in the various fields, including valid port and backup port numbers.

  • Page 72: Viewing Port Statistics

    (the default is one, as shown in Figure 4-5). When you press the < and > keys, the screen scrolls the specified number of ports. NOTE: Refer to the glossary for definitions of these statistics. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 73: Viewing Port Group Statistics

    ......4-16 Hub Management Viewing Port Group Statistics The Port Group Statistics screen shows statistical information for a specific port group.
  • Page 74 ......4-17 Figure 4-8. Port Group Statistics Screen (Model 3624) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 75: Changing Your Password

    4-18 Hub Management Changing Your Password The Change Password screen lets you change your current password. To change your password, follow these steps: 1. Enter the old password in the Old password field. NOTE: You must enter information in the Old password field to advance the cursor to the New and Verify password fields.

  • Page 76: Downloading Firmware

    1. Position the cursor on the Download Type field. Press the space bar to select Runtime Only or Boot/Runtime. 2. Position the cursor on the Protocol type field. Press the space bar to select the desired option (XMODEM, TFTP, and so forth). Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 4-19...

  • Page 77: Error Messages

    4-20 Hub Management 3. Position the cursor on the Version field and enter the firmware version, including any leading zeros (no periods). This information must be correct for a successful download. Refer to any release notes, README files, or other documentation that accompanies the firmware upgrade for the correct firmware version.

  • Page 78: Setting Up The Modem

    The Modem Setup screen lets you enter the modem's initialization string and disable or enable auto negotiation. The default initialization string is usually adequate. For more information, refer to the modem documentation. Figure 4-11. Modem Setup Screen Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 79: Logging Out Of The Management Session

    ......4-22 Hub Management Logging Out of the Management Session The Logout screen lets you end the VT100 management session.

  • Page 80: Rmon Support (Model 3612)

    Ethernet networks. You can specify the number of samples and sample interval. You can sample the following variables: Octets BroadcastPkts MulticastPkts CRCAlignErrors UndersizePkts OversizePkts Fragments Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 4-23...

  • Page 81: Alarm Group

    4-24 Hub Management Jabbers Collisions Utilization Alarm Group The Alarm group periodically takes statistical samples from variables and compares them to previously configured thresholds. The alarm table stores configuration entries, each of which defines a polling period and various threshold values. If a monitored variable exceeds a threshold value, the repeater generates an event.

  • Page 82: Intrusion Protection (Model 3612)

    NOTE: If the SNMP manager tries to change the settings of mdcIntrusionPortStatus when mdcSecurityStatus is set to enable(2), a PDU error occurs. See “Security” in the next section for more information about the mdcSecurityStatus settings. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide 4-25...

  • Page 83: Security

    4-26 Hub Management Security The security feature provides further network security by restricting access to the mdcIntrusionPortStatus, mdcIntrusionPortMACAddress, and mdcIntrusionPortMACAddressStr MIB variables. You can restrict access to these intrusion table MIB variables by setting the mdcSecurityStatus MIB variable to enable(2). The default value is disable(1), which allows the SNMP manager to directly access the intrusion table through normal SNMP set PDUs (Protocol Data Units).

  • Page 84: Appendix A Specifications

    2524/2624 - 110W internal 3512/3612 - 90W redundant, hot-swappable Frequency: 50 to 60 Hz Cooling 2524/2624 - One 60mm, 5 VDC fan (rear-mounted) 3512/3612 - Two 40mm, 12 VDC fans (rear- and side-mounted) Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 85: Environmental

    ......Appendix A Environmental Temperature: Operating: 32 to 104 F, 0 to 40 C Storage: 32 to 151 F, 0 to 60 C Humidity: Operating/Storage: 5% to 95% (non-condensing) Altitude: Operating: 0 to 10,000 ft, 0 to 3 km...

  • Page 86: Internal Dip Switch (Models 3512/3612)

    For information about the dip switch settings for the 2624 repeater, see the section “Dip Switch Settings” in Chapter 3. 100Base-T Repeater Internal DIP Switch = Backplane 3 = Isolated Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide Switch 3: Hardware Override = Enable Switch Settings = Disable Switch Settings...

  • Page 87: Upgrading The Dram (Model 3612)

    4. Align the SIMM's contacts with the contacts in the SIMM socket. Then carefully press the SIMM into the socket. 5. Push the SIMM into the metal tabs until the SIMM snaps into place. 6. Replace the chassis cover. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...

  • Page 88: Electrostatic Discharge

    Keep electrostatic-sensitive parts in their containers until they arrive at static-free workstations. Place parts on a grounded surface before removing them from their container. Avoid touching pins, leads, or circuitry. Always be properly grounded when touching a static-sensitive component or assembly. Netelligent 2524/2624 and 3512/3612 100Base-T Switch User Guide...

  • Page 89: Grounding Methods

    Grounding Methods There are several methods for grounding, Use one or more of the following measures when handling or installing electrostatic-sensitive parts: Use a wrist strap connected by a ground cord to a grounded workstation or the computer chassis. Wrist straps are flexible straps with a minimum of 1 megohm +/- 10 percent resistance in the ground cords.
  • Page 90 802.3 An IEEE standard for Ethernet local area networks based on Carrier Sense Multiple Access with Collision Detection (CSMA/CD), which includes 10BASE2, 10BASE 5 and 10BASE-T. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 91 Glossary 802.3 RAW A frame type that uses the packet format defined by the 802.3 IEEE standard without the additional header support such as that provided by 802.2. Address Resolution Protocol is used by the TCP/IP protocol stack to dynamically bind an IP address with a MAC address. Autopartition A port is autopartitioned (disabled) by the hardware after a continuous collision for 1024 to 2048 bit times or after it detects 32 consecutive...
  • Page 92 The communications port on a workstation, server, or other DTE. This port is sometimes referred to as the serial, RS-232, or DB-9 port. CSMA/CD Carrier Sense Multiple Access/Collision Detect. This communications access method is used by both 10Base-T and 100Base-T networks. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 93 Glossary DB-9 A category of connector that contains nine pins. DB-9 connectors are commonly used for RS-232 interfaces. For example, a computer's serial (COM) port is usually a DB-9 connector. DIP Switch Dual In-line Package Switch. A DIP switch contains a set of small switches that are usually used to set a configuration component of a device.
  • Page 94 Novell NWHUB.MIB and IPX autodiscovery. IPX Diagnostics: IPX diagnostics are required to support the Novell NetExplorer server. The NetExplorer server is used to update the NMS database with the current network configuration. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 95 Glossary RIP: NetWare Routing Information Protocol (RIP) is the routing protocol used by IPX routers. Using a distance-vector routing protocol, it optimizes the routing between source and destination addresses by minimizing the "hop" count. The firmware supports RIP to allow NMS to ascertain the repeater's MAC address, thus allowing NMS to initiate SNMP over IPX communications.
  • Page 96 IP address can be set. Manageable A module is manageable if it contains a SNMP agent and there is a data communication path to that agent. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 97 Glossary Management Information Base describes an agent's configuration flexibility, diagnostic ability and information that can be reported to a network management station. Media Interface Connector. A MIC is the physical connection between the optical fiber and a workstation in an FDDI installation. Media Independent Interface.
  • Page 98 IP address. Reconnection The hardware uses a standard reconnection algorithm that reconnects (i.e., enables) an autopartitioned port after data is received for 488 bit times without a collision. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 99 G-10 Glossary Repeater Hop The action of a data transmission passing through a repeater in a communications circuit. IEEE 802.3 standards specify the number of repeater hops allowed for various types of repeaters. For example, Class II repeaters allow up to two repeater hops per segment. RJ-45 An 8-wire modular connector used for RJ-45 Ethernet and some telephones.
  • Page 100 SNMP Simple Network Management Protocol; a protocol used by network management stations to communicate management information over a UDP/IP or IPX network. ST Connector An optical medium connector plug and socket. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide G-11...
  • Page 101 G-12 Glossary Stack A stack consists of one or more 2524/2624 or 3512/3612 repeaters. The maximum number of repeaters in a 2524/2624 repeater stack is 3 and in a 3512/3612 repeater stack is 5. Stack Order The stack order or stack group map is used by an SNMP network manager to display a graphical representation of a stack that matches the actual physical representation.
  • Page 102 Transmission Control Protocol/Internet Protocol. TCP/IP is a widely used data transmission protocol developed by the Advanced Research Projects Agency (ARPA). The TCP controls the transfer of data and the IP provides a method for routing the data. Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide G-13...
  • Page 103 G-14 Glossary Telnet A protocol in the TCP/IP suite of protocols that controls character- oriented terminal traffic. TFTP Trivial File Transfer Protocol. TFTP can be used to download a new Flash image. Trap A trap is an unsolicited event sent from an agent to a network management station.
  • Page 104 Collisions 4-16 COM port 1-14 Compaq Netelligent Management Software 1-2 Configuration entries 4-23 Connecting power 3-10 Connecting twisted-pair cable 3-4 Connector of adjacent upper repeater Connector of bottom repeater 3-9 Cooling A-1 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 105 I-2 Index Copper wire 2-5 CRC alignment errors 4-23 CSMA/CD 2-5 CSMA/CD protocol 2-3 DB9 connector 1-10, 1-14 Delta value 4-24 Diagnostic purposes 4-23 Dip switches 1-12, 3-6 Disconnecting power 3-11 Distance rules 2-5 Domain, collision 4-23 Domain diameter 2-5 Download Firmware screen 4-19 DRAM 1-7 DTE-to-DTE 2-4...
  • Page 106 Modem Setup screen 4-21 Motherboard 3-4 NIC 1-12 Novell IPX protocol 4-3 NMS 4-4 repeater MIB 4-3 Novell Health State 4-25 Null modem 4-19 Null modem cable 2-8 Null modem connection 4-7 NVRAM 4-4 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 107 I-4 Index Operating temperature A-2 Options 1-3 Out-of-band communications 1-14 Out-of-band management 1-16, 2-8, Package contents 1-3 Password, default 4-8 PDUs 4-26 Polling 4-24 Port, changing status of 4-25 Port activity 1-8 Port Group Statistics screen 4-16 Port Statistics screen 4-15 Positioning repeater 3-2 POST 1-7, 3-10 Power supply 1-11, A-1...
  • Page 108 VDC fan A-1 Ventilation 2-1 VT100 4-2, 4-5, 4-7 VT100 console interface 1-10 VT100 interface 1-14 Weight A-1 Windows HyperTerminal program 4-6, 4-9 Windows Terminal program 4-6, 4-9 XMODEM 1-10, 4-6, 4-19 Netelligent 2524/2624 and 3512/3612 100Base-T Repeater User Guide...
  • Page 109 Part Number 283318-001 December, 1996...

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Netelligent 2624Netelligent 3512Netelligent 3612

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