Black Box LGB2004A User manual

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
© Copyright 2005. Black Box Corporation. All rights reserved.

CUSTOMER
SUPPORT
INFORMATION
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 [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
APRIL 2005
LGB2004A
LGB2004C-MMSX
LGB2004C-SMLX
24-Port 10/100 Managed Switch
with Gigabit Uplink Port
Multimode Gigabit Uplink Module
Single-Mode Gigabit Uplink Module
Quick Start Guide

1
FCC AND IC RFI STATEMENTS/CE NOTICE
FEDERAL COMMUNICATIONS COMMISSION
AND
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. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart B of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct
the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
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.
EUROPEAN UNION DECLARATION OF CONFORMITY
This equipment complies with the requirements of the European EMC Directive
89/336/EEC.

2
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
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.
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de
operación deben ser respetadas.
4. Todas las instrucciones de operación y uso deben ser seguidas.
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca
de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que
sean recomendados por el fabricante.
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea
recomendado por el fabricante.
8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá
a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser
referido a personal de servicio calificado.
9. El aparato eléctrico debe ser situado de tal manera que su posición no
interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,
alfombra o superficie similar puede bloquea la ventilación, no se debe colocar
en libreros o gabinetes que impidan el flujo de aire por los orificios de
ventilación.
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor
como radiadores, registros de calor, estufas u otros aparatos (incluyendo
amplificadores) que producen calor.
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.

3
NOM STATEMENT
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización
del equipo no sea eliminada.
13. Los cables de la fuente de poder deben ser guiados de tal manera que no
sean pisados ni pellizcados por objetos colocados sobre o contra ellos,
poniendo particular atención a los contactos y receptáculos donde salen del
aparato.
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las
recomendaciones del fabricante.
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas
de energia.
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea
usado por un largo periodo de tiempo.
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean
derramados sobre la cubierta u orificios de ventilación.
18. Servicio por personal calificado deberá ser provisto cuando:
A: El cable de poder o el contacto ha sido dañado; u
B: Objectos han caído o líquido ha sido derramado dentro del aparato; o
C: El aparato ha sido expuesto a la lluvia; o
D: El aparato parece no operar normalmente o muestra un cambio en su
desempeño; o
E: El aparato ha sido tirado o su cubierta ha sido dañada.

4
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
TRADEMARKS USED IN THIS MANUAL
Telnet is a trademark of Telnet Communications, Inc.
Any other trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

5
CONTENTS
Contents
Chapter Page
1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. Unpacking and Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Rackmounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Install the Gigabit Uplink Module (Optional) . . . . . . . . . . . . . . . . . . . . . 10
3.5 Connecting Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.6 Applying AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Front-Panel Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Rear-Panel Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
NOTE
For configuration and software information, see the 24-Port 10/100
Managed Switch with Gigabit Uplink Port Installation Guide. This is
included on a CD-ROM that you received with your switch.

6
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
1. Specifications
Standards: IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE 802.3x full
duplex on 10BASE-T and 100BASE-TX ports, IEEE 802.3z 1000BASE-SX, IEEE
802.1d spanning tree protocol, IEEE 802.1p priority queues, IEEE 802.1q VLAN
tagging, RFC 1350 TFTP
Data Transfer Rate: Ethernet: 10 Mbps (half-duplex), 20 Mbps (full duplex);
Fast Ethernet: 100 Mbps (half-duplex), 200 Mbps (full duplex);
Gigabit Ethernet: 2000 Mbps (full duplex)
Filtering Address Table: 14K entries per device
Packet Filtering/Forwarding Rate: 10-Mbps Ethernet: 14,880 pps;
100-Mbps Fast Ethernet: 148,800 pps;
1000-Mbps Gigabit Ethernet: 1,488,000 pps
MAC Address Learning: Automatic update
RAM Buffer: 3 Mb
Network Management: System Configuration: Console port, Telnet™;
Spanning Tree Algorithm: IEEE 802.1d provides redundant link support;
Port-based, Protocol-based, or 802.1q VLANs: Up to 256 VLANs with GVRP for
dynamic VLAN registration;
Link Aggregation: Up to 4 ports can be combined into a fat pipe, 7 trunks
Maximum Distance: UTP: 328 ft. (100 m) over Category 5e or better cable;
Fiber: LGB2004C-MMSX: 721.6 ft. (219.9 m) (62.5/125-micron multimode fiber
via SC connectors);
LGB2004C-SMLX: 6.2 mi. (10 km) (9/125-micron single-mode fiber cabling via
SC connectors)
Connectors: LGB2004A: (24) 10/100 Ethernet ports, (1) card slot (for 1-port
multimode fiber [LGB2004C-MMSX] or single-mode fiber [LGB2004C-SMLX]
Gigabit module), (1) DB9 console port;
LGB2004C-MMSX: (2) SC multimode ports;
LGB2004C-SMLX: (2) SC single-mode ports
Indicators: LGB2004A: (52) LEDs: (1) Power, (1) Diag, (1) Fan 1, (1) Fan 2,
(24) Twisted-Pair Link Activity, (24) 100 Mbps
Temperature Tolerance: Operating: 41 to 104°F (5 to 40°C);
Storage: -4 to +158°F (-20 to +70°C)

7
CHAPTER 1: Specifications
Humidity Tolerance: Operating: 10 to 90%, noncondensing;
Storage: 5 to 90%, noncondensing
Power: Input: 100 to 240 VAC (auto-ranging), 50 to 60 Hz;
Output: 3.3 VDC, 20 amps and 5 VDC, 35 watts;
(2) power supplies ([1] primary, [1] redundant)
Size: LGB2004A: 1.7"H (1U) x 17.3"W x 11.2"D (4.3 x 43.9 x 28.4 cm)
Weight: LGB2004A: 5.1 lb. (2.3 kg), fully loaded

8
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
2. Overview
The Managed 24-Port 10/100 Switch with Gigabit Uplink Port incorporates leading
switching technology and high-port density within a slim one-rack-unit (1U) chassis
that fits in a standard 19" rack. It integrates 100-Mbps Fast Ethernet and 10-Mbps
Ethernet network capabilities in a highly flexible package.
24 10/100 ports connect to each Ethernet device via up to 328 feet (100 m) of
either 10BASE-T 2-pair UTP Category 3, 4, or 5 cable or 100BASE-TX 2-pair UTP
Category 5 cable. These ports automatically detect whether the connected device is
running at 10 or 100 Mbps.
An optional one-port Gigabit fiberoptic module (LGB2004C-MMSX or
LGB2004C-SMLX) fits in the switch’s front panel for length extension up to
721.6 feet (219.9 m) over multimode fiber or up to 6.2 miles (10 km) over single-
mode fiber.
The switch works in half-duplex or full duplex transfer mode for 10- and 100-Mbps
connection speeds. Furthermore, it receives and transmits data at wire speed.
A store-and-forward switching scheme enables the switch to support rate
adaptation. This also ensures data integrity.
Up to 14K unicast address entities are supported per device. Plus, the switch
features self-learning, table aging, and has a 3-Mb RAM buffer. It supports 802.3x
flow control for the full duplex mode ports. Other functions include port-based
VLAN, port-based QoS (Quality of Service), trunking, port mirroring, port setting
for speed/disable, and flow control.
Configuration is easy via a Web browser or console port interface.

9
CHAPTER 3: Unpacking and Setup
3. Unpacking and Setup
3.1 What’s Included
Your package should contain the following items. If anything is missing or
damaged, please contact Black Box at 724-746-5500.
LGB2004A:
• (1) 24-Port 10/100 Managed Switch with Gigabit Uplink Port
• (1) AC power cord
• (2) rackmount brackets
• (8) screws
• (1) CD-ROM containing this quick start guide and an installation manual
LGB2004C-MMSX or LGB2004C-SMLX:
• (1) Multimode SX Gigabit Uplink Module or
(1) Single-Mode LX Gigabit Uplink Module
3.2 Setup
Before you install the switch, refer to Section 3.1 and make sure your package
includes everything listed.
The site where you install the switch may greatly affect its performance. When
installing, consider the following:
• Install the switch in a fairly cool and dry place. See Chapter 1 for the
acceptable temperature and humidity operating ranges.
• Install the switch in a site free from strong electromagnetic field generators
(such as motors), vibration, dust, and direct exposure to sunlight.
• Leave at least 4" (10.2 cm) of space at the switch’s front and rear for
ventilation.
• Install the switch in an EIA standard-size equipment rack. For information on
rack installation, see Section 3.3.

10
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
3.3 Rackmounting
The switch can be mounted in an EIA standard-size 19" rack that can be placed in a
wiring closet with other equipment. Attach the mounting brackets at the switch’s
front panel (one on each side) and secure them with the eight provided screws.
Next, install the switch in the rack.
NOTE
The four screws used to connect the switch to the rack are not included;
you must supply them.
3.4 Install the Gigabit Uplink Module (Optional)
To connect to a Gigabit fiber link, slide the Gigabit Uplink Module (LGB2004C-
MMSX or LGB2004C-SMLX) into the slot on the switch’s front panel. See Figure
4-1 for the fiber module slot’s location.
3.5 Connecting Network Cable
The switch supports 10-Mbps Ethernet or 100-Mbps Fast Ethernet that runs both in
half- and full duplex mode.
These RJ-45 ports are auto-MDI. The switch can auto transform to MDI-II or
MDI-X, so you can make an easy connection without worrying if you are using a
standard or crossover RJ-45 cable.
If you installed an optional Gigabit uplink module (LGB2004C-MMSX or
LGB2004C-SMLX) in the switch’s Gigabit uplink module slot, you will need to
connect the fiber cable for this link. Use 1310-nm multimode or single-mode
fiberoptic cable.
3.6 Applying AC Power
The 24-Port 10/100 Managed Switch with Uplink Port uses a 100–240-VAC,
50–60-Hz power supply. Its power switch is located on the unit’s rear panel, next
to the AC power connector. The power supply automatically adjusts to the local
power source. Power on the unit without having LAN segment cables connected.

11
CHAPTER 4: Operation
4. Operation
4.1 Front-Panel Components
The front panel is shown in Figure 4-1 below.
Figure 4-1. Front panel.
Comprehensive indicators display the switch’s and the network’s status. Table 4-1
describes the switch’s front-panel indicators and connectors.
Table 4-1. Front-panel indicators and connectors.
Component Function
Power LED This LED lights when the switch is receiving power.
When the power is off or the power cord has improper
connection, this LED is off.
Diag LED This LED flashes while the switch is performing self-
system diagnostics upon startup. The LED lights solid to
indicate normal operation.
❶
❷
❸
❹
❺❻
❶
❷
❼
❽
❾

12
24-PORT 10/100 MANAGED SWITCH WITH GIGABIT UPLINK PORT
Table 4-1 (continued). Front-panel indicators and connectors.
Component Function
Fan 1 LED This LED lights when the fan is operating properly.
Fan 2 LED This LED lights when the fan is operating properly.
LNK/ACT LED When this LED is on, the switch’s respective twisted-
(left side of port) pair port is successfully connected to a network.
When this LED is blinking, the port is transmitting or
receiving data on the Ethernet network.
When this LED is off, no link is connected.
10/100 Mbps LED When this LED is on, the switch’s respective twisted-pair
(right side of port) port is connected to a Fast Ethernet network.
When this LED is off, the switch’s respective port is
connected to a 10-Mbps Ethernet port.
10-/100-Mbps The switch’s 24 twisted-pair ports support autonegotiable
Ethernet ports 10/100 Mbps and auto-MDI/MDI-X crossover detection.
(1–24) Simply plug the network cable directly into the switch. It
doesn’t matter whether the end node is a NIC (network
interface card), switch, or hub. These ports operate in
half- or full duplex mode.
Console port This DB9 connector is used for a terminal connection for
remote management.
Fiber module This slot holds an optional Gigabit Uplink Module
slot (LGB2004C-MMSX or LGB2004C-SMLX) that connects
to a fiber link.
❸
❹
❺
❻
❼
❽
❾

13
4.2 Rear-Panel Components
Figure 4-2 shows the switch’s rear-panel button and connector. Table 4-2 describes
these components.
Figure 4-2. Rear panel.
Table 4-2. Rear-panel button and connector.
Component Function
Power button Set the button to the On position to power on the switch.
Set it to the Off position to power off the switch.
AC power This three-pronged connector supports the power cord.
connector Plug the provided power cord’s female connector into this
connector, and plug the cord’s male connector into a
power outlet. Supported input voltages range from
100–240 VAC at 50–60 Hz.
CHAPTER 4: Operation
AC power
connector
Power
button