Black Box LB5953A Manual
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Black Box LB5953A Manual

Black Box LB5953A Manual

16-port stack hub. 24-port stack hub
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CUSTOMER
SUPPORT
INFORMATION
16-Port Stack Hub
24-Port Stack Hub
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
AUGUST 2001
LB5953A
LB5954A

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Summary of Contents for Black Box LB5953A

  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 FCC AND IC RFI STATEMENTS/CE NOTICE FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
  • Page 3 16- AND 24-PORT STACK HUBS NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 4 NOM STATEMENT 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.
  • Page 5 16- AND 24-PORT STACK HUBS TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    CONTENTS Contents Chapter Page 1. Specifications ..........6 1.1 General .

  • Page 7: Specifications

    Protocol: CSMA/CD Network Data Transfer Rate: Ethernet:10 Mbps; Fast Ethernet: 100 Mbps Number of Ports: LB5953A: (16) MDI-X, (1) MDI-II uplink, (1) expansion slot; LB5954A: (24) MDI-X, (1) MDI-II uplink, (1) expansion slot Network Media: Ethernet: Category 3 or better UTP; Fast Ethernet: Category 5 UTP/STP, 100-ohm twisted-pair 1.2 Hub-to-Hub Cascading...

  • Page 8: Environmental And Physical

    Power Supply: 100 to 240 VAC, 50 to 60 Hz, autosensing, internal universal power supply Power Consumption: 40 watts (max.) Size: 1.7"H x 17.3"W x 7.9"D (4.3 x 43.9 x 20.1 cm), 19-inch rack-mountable Weight: LB5953A: 9 lb. (4.1 kg); LB5954A: 10 lb. (4.5 kg)

  • Page 9: Introduction

    16- AND 24-PORT STACK HUBS 2. Introduction 2.1 Overview The 16- and 24-Port Stack Hubs allow easy migration and integration between 10-Mbps Ethernet and 100-Mbps Fast Ethernet while providing manageability and flexibility in cable connections. The Hub can operate with either IEEE 802.3 10BASE-T connections (twisted-pair Ethernet operating at 10 Mbps) or IEEE 802.3u 100BASE-TX connections (twisted- pair Fast Ethernet operating at 100 Mbps).

  • Page 10: What The Package Includes

    • (1) AC power cord, suitable for your area’s electrical power connections. • (1) Daisychain cable. • (4) Rubber feet to be used for shock cushioning. • Screws and two mounting brackets. • This users’ manual. If anything is missing or damaged, please call Black Box at 724-746-5500.

  • Page 11: Setup

    16- AND 24-PORT STACK HUBS 3. Setup 3.1 Identifying External Components This section identifies all the major external components of the hub. Both the front and rear panels are shown, followed by a description of each panel feature. The indicators are described in detail in Chapter 4. 3.1.1 F RONT ANEL...

  • Page 12: Rear Panel

    CHAPTER 3: Setup 3.1.2 R ANEL Daisychain Power ports Module slot connector Figure 3-2. Rear panel. • Module Slot: Reserved for future use. • Daisychain IN Port: When cascading a set of the Hubs, this port should be connected to the daisychain OUT port of the previous hub in the stack (usually placed immediately above it).

  • Page 13: Rack Mounting

    16- AND 24-PORT STACK HUBS • Install the Hub on a sturdy, level surface that can support its weight, or in an EIA standard-size equipment rack. For information on rack installation, see Section 3.2.2. When installing the Hub stack on a level surface, attach the rubber feet to the bottom of each device.

  • Page 14: Indicators

    CHAPTER 4: Indicators 4. Indicators Before connecting network devices to the hub, take a few minutes to read this chapter and familiarize yourself with the front-panel LED indicators. 4.1 Hub State Indicators • Power Indicator: This indicator lights green when the Hub is receiving power; otherwise, it is off.

  • Page 15: Making Connections

    16- AND 24-PORT STACK HUBS 5. Making Connections This chapter discusses a) how to make connections to the Hub’s twisted-pair, b) cascading hubs to create a stack, and c) linking with other hubs (or hub stacks). 5.1 Hub Cascading/Building a Stack You can stack up to four Hubs using the daisychain ports to form one logical hub.

  • Page 16: Connectivity Rules

    CHAPTER 5: Making Connections 5.2 Connectivity Rules Ethernet (10-Mbps) networks have the following connectivity rules: • The maximum length of a twisted-pair cable segment is 100 meters (328 ft.). Cabling should be Category 3 or better. • Between any two end-stations in a collision domain, there may be up to five cable segments and four intermediate repeaters (hubs, hub stacks, or other repeaters).

  • Page 17: Hub-To-Hub Uplink

    For assistance in designing your network to accommodate the maximum diameter it can achieve under individual conditions, please contact Black Box Technical Support at 724-746-5500.

  • Page 18: Cables And Connectors

    CHAPTER 6: Cables and Connectors 6. Cables and Connectors 6.1 100BASE-TX Ethernet Cable and Connectors • Cable characteristics: 0.4 to 0.6 mm (22 to 26 AWG) 4-pair (only two pairs/four wires are used for 100BASE-TX); Category 5 unshielded twisted-pair or EIA/TIA-568 compliant, 100-ohm shielded twisted-pair •...

  • Page 19: Crossover Cables

    16- AND 24-PORT STACK HUBS Workstation (MDI) Hub (MDI-X) 1 TD+ RD+ 1 2 TD- 3 RD+ TD+ 3 6 RD- Figure 6-2. Wiring diagram for straight-through cables. 6.2 Crossover Cables When cascading or connecting the Hub to another switch, bridge, or hub through the UTP port, a modified crossover cable is necessary.
  • Page 20 © Copyright 2001. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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