Black Box LGB1108A Quick Start Manual
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Black Box LGB1108A Quick Start Manual

10-, 26-, or 48-port gigabit managed switch
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10-, 26-, or 48-Port Gigabit Managed Switch
Quick Start Guide
An affordable managed switch with
the power to be a key component of
your network infrastructure.
Customer
Support
Information
LGB1108A Quick Start Guide
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
www.blackbox.com • info@blackbox.com
LGB1108A
LGB1126A
LGB1148A

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Summary of Contents for Black Box LGB1108A

  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) Customer FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Support www.blackbox.com • info@blackbox.com Information LGB1108A Quick Start Guide...
  • Page 2 Trademarks Trademarks Used in this Manual Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc. Intel is a registered trademark of Intel Corporation Xerox is a registered trademark of Xerox Corporation. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 3: Fcc Statement

    Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par Industrie Canada. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 3...

  • Page 4: Instrucciones De Seguridad

    El aparato ha sido expuesto a la lluvia; o D: El aparato parece no operar normalmente o muestra un cambio en su desempeño; o El aparato ha sido tirado o su cubierta ha sido dañada. 724-746-5500 | blackbox.com Page 4 LGB1108A Quick Start Guide...

  • Page 5: Table Of Contents

    6. Labeling Connections ................................26 7. Troubleshooting ...................................27 8. Power and Cooling Problems ..............................29 8.1 When You Turn the Unit On ............................29 8.2 In-band Access ................................29 9. Cabling .....................................30 10. Glossary .....................................34 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 5...

  • Page 6: Specifications

    100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better); 1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e, or 6) Ports — LGB1108A: (8) 10/100/1000 Mbps TP; (2) 100/1000 Mbps SFP Fiber/(10/100/1000 Mbps) TP dual-media ports, (1) RJ-45 console port;...

  • Page 7: Management Features

    IEEE 802.3ad: Link aggregation control protocol (LACP), IEEE 802.1AB: Link layer discovery protocol (LLDP) 1.5 Compliances Compliance — EN55022 (CISPR 22) Class A EN 61003 FCC Class A CE Mark Immunity — EN61000-4-2/3/4/5/6/8/11, EN 55024 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 7...

  • Page 8: Overview

    Power RJ-45 Reset/ TP and 100/1G SFP ports 10/100/1000BASE-T RJ-45 ports console Default port Figure 2-1. Front panel of the 10-Port Gigabit Managed Switch (LGB1108A). Switch TP LEDs Power TP and 100/1G SFP ports RJ-45 10/100/1000BASE-T RJ-45 ports Reset/ console...

  • Page 9: Features

    NOTE: The 26-Port Gigabit Managed Switch’s front panel is similar to the 10-Port Switch. Both switches have the same Power LED and Reset/ Default button. The LGB1108A has (8) 10/100/1000BASE-T RJ-45 ports, (2) TP and 100/1G SFP ports, (16) switch TP LEDs, and (1) RJ-45 console port.

  • Page 10: Description Of Hardware

    * NOTE: Maximum distance may vary for different SFP vendors. Reset/Default or Mode button The LGB1108A and LGB1126A each have a Reset/Default button. The LGB1148A has a Mode button. The Reset/Default and Mode buttons function in the same way: The Mode or Reset button is used to change port mode display (link/speed), warm reboot, and reload defaults). To reload defaults: Press the Mode button for less than 5 seconds for a warm boot, or press the Mode button for more than 5 seconds to reset the switch back to factory default settings and reboot.

  • Page 11: Network Planning

    Conditions Status Green/OFF Power Lit when power is on • Power Supply Socket: There is a standard 120-VAC power socket on the rear panel of the switch. Figure 2-2. Back panel. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 11...

  • Page 12: Introduction To Switching

    Managed Switch (LGB1108A) are described below. NOTE: The LGB1126A and LGB1148A are similar to the LGB1108A, but have (20) or (44) Gigabit ports. The LGB1126A and LGB1148A also have dual-media SFP/(10/100/1000) ports, which are described in the specifications section of this manual.

  • Page 13: Installation

    Chapter 4: Installation LGB1108A Figure 3-2. Peer-to-peer network connection LGB1108A LGB1108A Figure 3-3. Office network connection 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 13...

  • Page 14: Selecting A Site

    After unpacking this switch, please check the contents to be sure you have received all the components. Then, before beginning the installation, be sure you have all other necessary installation equipment. 724-746-5500 | blackbox.com Page 14 LGB1108A Quick Start Guide...

  • Page 15: What's Included

    • AC power cord • (4) Adhesive rubber feet • Mounting accessory (for 19" rack, optional) • RS-232 to RJ-45 console cable (for LGB1108A and LGB1126A) or DB9 to DB9 console cable (for LGB1148A) • This installation guide • User’s manual on CD NOTE: Call Black Box immediately if any of these items is missing or damaged.
  • Page 16 Step 3. If installing a single switch only, go to “Connecting to a Power Source” later in this chapter. Step 4. If installing multiple switches, attach four adhesive feet to each one. Place each device squarely on top of the one below, in any order. 724-746-5500 | blackbox.com Page 16 LGB1108A Quick Start Guide...
  • Page 17 You can install or remove a mini-GBIC SFP from a mini-GBIC slot without powering off the switch. NOTE: On the LGB1108A, the mini-GBIC slots are shared with the two 10/100/1000BASE-T RJ-45 ports. If a mini-GBIC is installed in a slot, the associated RJ-45 port is disabled and cannot be used. The LGB1126A has (4) dual-media SFP/(10/100/11000) RJ-45 and (2) SFP ports.
  • Page 18 3 RXD (receive data) -----------------> 2 RXD (receive data) 5 SGND (Signal ground) ------------------- 5 SGND (Signal ground) NOTE: No other pins are used. Figure 4-8. Plug in the console port. 724-746-5500 | blackbox.com Page 18 LGB1108A Quick Start Guide...
  • Page 19 Using Web-based Management The default values of the managed switch are listed in the table below: Table 4-3: Using Web-based Management IP Address 192.168.1.1 Subnet Mask 255.255.255.0 Default 192.168.1.254 admin Username Password 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 19...
  • Page 20 NOTE: If you need to configure the function or parameter, refer to the detail in the User Guide. Or access the switch and click “help“ under the Web GUI. A help screen will provide you with help content to walk you through the process of setting the parameters. Figure 4-10. Web Help Function screen. 724-746-5500 | blackbox.com Page 20 LGB1108A Quick Start Guide...

  • Page 21: Network Connections

    Chapter 5: Network Connections Figure 4-11. System Information Help screen. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 21...

  • Page 22: Connecting Network Devices

    Step 2. If not already in place, attach one end of a cable segment to the back of the patch panel where the punchdown block is located, and the other end to a modular wall outlet. Step 3. Label the cables to simplify future troubleshooting. See Chapter 6: Labeling Connections. 724-746-5500 | blackbox.com Page 22 LGB1108A Quick Start Guide...
  • Page 23 Step 3. Connect one end of the cable to the LC port on the switch and the other end to the LC port on the other device. Since LC connectors are keyed, the cable can be attached in only one orientation. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 23...
  • Page 24 Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3-2005 standards. 724-746-5500 | blackbox.com Page 24 LGB1108A Quick Start Guide LGB1108A...

  • Page 25: Labeling Connections

    100-Mbps Fast Ethernet Collision Domain Table 5-5: Maximum Fast Ethernet cable length. Cable Type Maximum Cable Length Connector Category 5, 5e, or 6 100-ohm UTP 100 m (328 ft.) RJ-45 or STP 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 25...

  • Page 26: Troubleshooting

    • Differentiate between racks by naming them accordingly. • Label each separate piece of equipment. • Display a copy of your equipment map, including keys to all abbreviations at each equipment rack. 724-746-5500 | blackbox.com Page 26 LGB1108A Quick Start Guide...
  • Page 27 GVRP (automatic VLANs), or LACP (automatic trunking). (Note that the normal operation of the Spanning Tree, GVRP, and LACP features may put the port in a blocking state.) Or, the port just may have been configured as disabled through software. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 27...
  • Page 28 Verify that the proper cable type is used and that its length does not exceed specified limits. Check the adapter on the attached device and cable connections for possible defects. Replace the defective adapter or cable if necessary. 724-746-5500 | blackbox.com Page 28 LGB1108A Quick Start Guide...

  • Page 29: Power And Cooling Problems

    NOTE: The management agent accepts up to four simultaneous Telnet sessions. If the maximum number of sessions already exists, an additional Telnet connection will not be able to log into the system. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 29...

  • Page 30: Cabling

    Receive Data minus (RD-) Transmit Data minus (TD-) 4, 5, 7, 8 Not used Not used NOTE: The “+” and “-” signs represent the polarity of the wires that make up each wire pair. 724-746-5500 | blackbox.com Page 30 LGB1108A Quick Start Guide...
  • Page 31 Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet). 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 31...
  • Page 32 1. Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables. 2. Reduce the number of connectors used in the link. 3. Reconnect some of the connectors in the link. 724-746-5500 | blackbox.com Page 32 LGB1108A Quick Start Guide...

  • Page 33: Glossary

    1550-nm band. Extended long-haul applications. Optimized for high- Non-zero dispersion-shifted fiber single-mode, G.655 power dense wavelength-division multiplexing (DWDM) 9/125-micron core operation in the region from 1500 to 1600-nm. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 33...
  • Page 34 IEEE 802.3Z: Defines CSMA/CD access method and physical layer specifications for 1000BASE Gigabit Ethernet. (Now incorporated in IEEE 802.3-2005.) Lan Segment: Separate LAN or collision domain. LED: Light-emitting diode used for monitoring a device or network condition. 724-746-5500 | blackbox.com Page 34 LGB1108A Quick Start Guide...
  • Page 35 A VLAN serves as a logical workgroup with no physical barriers, allowing users to share information and resources as though located on the same LAN. 724-746-5500 | blackbox.com LGB1108A Quick Start Guide Page 35...
  • Page 36 About Black Box Black Box provides an extensive range of networking and infrastructure products. You’ll find everything from cabinets and racks and power and surge protection products to media converters and Ethernet switches all supported by free, live 24/7 Tech support available in 60 seconds or less.

This manual is also suitable for:

Lgb1126aLgb1148a

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