Black Box LGB2007A User manual

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

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]
CUSTOMER
SUPPORT
INFORMATION
OCTOBER 2005
LGB2007A
24-Port +1 Fiber Module Slot
Fast Ethernet Switch with VLAN

FCC AND IC RFI STATEMENTS
1
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.

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
2
INSTRUCCIONES DE SEGURIDAD (Normas Oficiales Mexicanas Electrical Safety Statement)
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.
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.

TRADEMARKS USED IN THIS MANUAL
3
TRADEMARKS USED IN THIS MANUAL
ST is a registered trademark of AT&T.
ProComm is a registered trademark of DATASTORM TECHNOLOGIES, INC.
Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or
other countries.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
4
Contents
Chapter Page
1. Specifications...........................................................................................................................................................5
2. Overview ...........................................................................................................................................................6
2.1 Introduction..................................................................................................................................................6
2.2 Components..................................................................................................................................................6
2.2.1 Front Panel.......................................................................................................................................6
2.2.2 Rear Panel ........................................................................................................................................8
2.3 What’s Included ............................................................................................................................................8
3. Installation ...........................................................................................................................................................9
3.1 Rackmounting the Switch ............................................................................................................................9
3.2 Installing the Switch on a Desktop ..............................................................................................................9
3.3 Connecting to a PC or Server ......................................................................................................................9
3.4 Connecting to a Switch or Hub .................................................................................................................10
4. COM Port Configuration .....................................................................................................................................12
4.1 Status .........................................................................................................................................................19
4.1.1 Overview .........................................................................................................................................20
4.1.2 MIB Counter ..................................................................................................................................22
4.1.3 Port Status ......................................................................................................................................23
4.2 Configuration..............................................................................................................................................24
4.2.1 Port .................................................................................................................................................25
4.2.2 Trunking.........................................................................................................................................26
4.2.3 Global .............................................................................................................................................27
4.2.4 QoS .................................................................................................................................................28
4.2.5 Priority Tag Insert/Remove ..........................................................................................................30
4.2.6 VLAN Global Control....................................................................................................................31
4.2.7 VLAN Member Setup ....................................................................................................................33
4.2.8 Device Features ..............................................................................................................................36
4.3 Security ........................................................................................................................................................37
4.4 Diagnostics...................................................................................................................................................38
4.5 Load Factory Defaults.................................................................................................................................39
4.6 Save .........................................................................................................................................................40
5. Troubleshooting....................................................................................................................................................41
5.1 Calling Black Box........................................................................................................................................41
5.2 Shipping and Packaging.............................................................................................................................41

CHAPTER 1: Specifications
5
1. Specifications
Standards: IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u 100BASE-TX/FX Fast Ethernet, ANSI/IEEE 802.3x
flow control for full duplex
Protocol: CSMA/CD
Topology: Star
Transmission Method: Store-and-forward
Distance (Maximum): LGB2007A: 328 ft. (100 m) over Category 3, 4, or 5 UTP cable;
LGB2007C-SC, LGB2007C-ST: 1.3 mi. (2.1 km) over 50-, 62.5-, or 125-µm multimode fiber;
LGB2007C-SSC: 12.6 mi. (20.3 km) over 8-, 9-, or 125-µm single-mode fiber
Speed: Ethernet: 10 Mbps (half-duplex), 20 Mbps (full duplex);
Fast Ethernet: 100 Mbps (half-duplex), 200 Mbps full duplex
Media: 10BASE-T: UTP Category 3, 4, or 5;
100BASE-TX: UTP Category 5
Port Module Option: Slide-in slot for 100-Mbps fiber module (LGB2007C-SC, LGB2007C-ST, or
LGB2007C-SSC)—see separate module manual
RAM Buffer: Total 2.5 M bits per device
Filtering Address Table: 8 K
Packet Filtering/Forwarding Rate: 148,800 or 14,800 pps, wire speed per port (for 100 Mbps and 10 Mbps)
Connectors: (24) 10-/100-Mbps RJ-45, (1) RJ-45 RS-232 console, (1) fiber slide-in slot for multimode or
single-mode module with (2) SC or ST, (1) power
Indicators: (73) LEDs: (1) Power, (24) Link/Act, (24) FDX/Col, (24) 100
Temperature Tolerance: Operating: 32 to 113°F (0 to 45°C); Storage: 32 to 140°F (0 to 60°C)
Humidity Tolerance: Operating: 10 to 90%; Storage: 5 to 95%
Power: 90–264 VAC, 47–63 Hz, 10 watts maximum
Size: 1.75"H (1U) x 17.5"W x 6"D (4.4 x 44.5 x 15.2 cm)

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
6
2. Overview
2.1 Introduction
Now small businesses and corporate branch offices can take advantage of 100-Mbps Fast Ethernet without
making changes to PCs, NICs, cabling, drivers, or PC configurations! Connect up to 24 UTP devices to the
24-Port +1 Fiber Module Slot Fast Ethernet Switch with VLAN. It provides high performance in an environment
where traffic on the network and the number of users increase continuously. The switch is easy to install and
supports auto MDI/MDI-X, so you can use either crossover or straight-pinned cable for your RJ-45 connections.
The switch also includes one fiber slide-in slot for a multimode or single-mode module (choose from
multimode modules with SC or ST connectors [LGB2007C-SC or LGB2007C-ST] or a single-mode module with
SC connectors [LGB2007C-SSC]). With a fiber module installed, you can expand the workgroup distance to
1.3 miles (2.1 km, multimode) or 12.6 miles (20.3 km, single-mode). Configuration is easy via the switch’s COM
port.
Store-and-forward switching capability supports rate adaptation. It also ensures that all error packets will be
filtered, plus it maintains maximum data integrity even under heavy loading. Autonegotiation on each RJ-45
port allows for autosensing speed (10 or 100 Mbps) and autodetecting mode (full or half-duplex). The switch
provides flow control in full duplex and backpressure in half-duplex mode. It also detects and corrects for
incorrect polarity on the received twisted pair. And it features a nonblocking data forwarding rate of 14,800 or
148,800 pps per port at 100% wire speed.
The switch conforms to many popular standards, including IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX/
FX, and IEEE 802.3x flow control for full duplex. It provides 8 K MAC address and 2.5 Mbits SSRAM buffer per
device. Diagnostic LEDs indicate power, link/activity, full duplex/collision, and speed (10-/100-Mbps) status.
This switch supports up to 32 VLAN groups entries for port-based LAN, and up to seven trunk groups function
with load balance and fault tolerance.
2.2 Components
2.2.1 FRONT PANEL
The switch’s front panel is shown in Figure 2-1. The LEDs shown (for a closer look, see Figure 2-2) include a
power indicator and three sets of per-port LEDs. The per-port LEDs include Link/Act, FDX/Col, and 100. The
switch has 24 RJ-45 port connectors, 1 RJ-45 RS-232 console connector, and 1 fiber slide-in slot for multimode
or single-mode module with 2 SC or ST connectors. The circled numbers labeling the indicators and
connectors in Figure 2-1 correspond to the numbers listed in Table 2-1.
Figure 2-1. Front panel.
❼
❶
❷
❸
❹
❺
❻

CHAPTER 2: Overview
7
Figure 2-2. LEDs.
Table 2-1. Front-panel indicators and connectors.
Component Description
Power LED This indicator lights when the switch is powered on.
Link/Act LEDs These per-port indicators light when there’s a functioning network link with an attached
device through the corresponding port.
Link/Act LEDs blink to indicate that the switch is actively sending or receiving data over
the corresponding port.
FDX/Col LEDs These per-port indicators light when the connected port is operating in full duplex
mode.
The LEDs remain off when the connected port is operating in half-duplex mode.
They blink when the connected port is under collision status.
100 LEDs These indicators light when the connected port is operating at 100 Mbps.
When the LEDs stay dark, the port is operating at 10 Mbps while the network is on.
RJ-45 ports 24 RJ-45 connectors for links to network devices.
RS-232 console port One RJ-45 connector that attaches to a user console for out-of-band management.
Fiber slot Install a multimode or single-mode fiberoptic module (LGB2007C-SC, LGB2007C-ST,
or LGB2007C-SSC) in this slot. Each module has two SC or ST®connectors. A module
is shown installed in Figure 2-1.
❶
❷
❸
❹
❺
❻
❼

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
8
2.2.2 REAR PANEL
The switch’s rear panel contains a 90–264-VAC, 47–63-Hz power connector.
Figure 2-3. Rear panel.
2.3 What’s Included
Your package should include the following items. If anything is missing or damaged, contact Black Box at
724-746-5500.
• (1) 24-Port +1 Fiber Module Slot Fast Ethernet Switch with VLAN
• (1) power cord
• (2) mounting brackets
• (1) RJ-45 cable for COM port
• (1) RS-232 transfer to RJ-45 connector
• (1) CD-ROM containing this user’s manual

CHAPTER 3: Installation
9
3. Installation
The switch has 24 10BASE-T/100BASE-TX RJ-45 ports. All of these ports support automatic MDI/
MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers, or to
other switches or hubs. Each port also supports autonegotiation, so the optimum transmission mode (full or
half-duplex) and data rate (10 or 100 Mbps) can be selected automatically.
3.1 Rackmounting the Switch
To mount the switch in a 19" rack, use the included rackmount brackets. Attach two screws (not included) on
each side to connect the mounting brackets to the sides of the switch. Then place the switch (with mounting
brackets installed) in the rack. Use two more screws (not included) on each side of the switch to hold the
mounting bracket in place on the rack. Then connect the PC or server and switch or hub cables to the switch as
described in Sections 3.3 and 3.4. Once all cable connections are made, power on the switch.
3.2 Installing the Switch on a Desktop
Place the switch on a desktop, then connect the PC or server and switch or hub cables to the switch as described
in Sections 3.3 and 3.4. Once all cable connections are made, power on the switch.
3.3 Connecting to a PC or Server
You can connect any RJ-45 station port on the switch to a PC via twisted-pair cable with RJ-45 plugs at both ends.
Use Category 3, 4, or 5 cable for standard 10-Mbps Ethernet connections or Category 5 cable for 100-Mbps Fast
Ethernet connections. See Figure 3-1.
Figure 3-1. Connecting a PC’s network interface card to the switch.
24-Port +1 Fiber Module Slot
Fast Ethernet Switch with VLAN
Network interface card
(NIC)
Straight-through RJ-45
cable (Category 3, 4, or 5
for 10-Mbps connections or
Category 5 for 100-Mbps
connections)
PC

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
10
Make sure you have installed a 10BASE-T or 100BASE-TX network interface card for connecting a PC to the
switch’s RJ-45 (MDI-X) station ports. If LEDs don’t light after powering on the switch, check to see if the LAN
card, the cable, and connectors are properly attached to the switch.
When an attached PC is powered on or reset:
1. The Link/Act LED will light.
2. The FDX/Col LED may light; this depends on the installed LAN card’s capabilities for the PC and the
switch connection.
3. The 100 LED will light for a 100-Mbps connection; otherwise it will stay dark, indicating a 10-Mbps
connection.
3.4 Connecting to a Switch or Hub
You can also connect any RJ-45 station port on the switch to a hub’s uplink port or to another switch’s port via
straight cable with RJ-45 plugs at both ends. See Figure 3-2.
Figure 3-2. Connecting a hub or another switch to the Fast Ethernet Switch with VLAN.
When an attached 10BASE-T/100BASE-TX hub is powered on or reset:
For a 10BASE-T hub:
• the Link/Act LED will light,
• the FDX/Col LED will not light, and
• the 100 LED will not light.
For a 100BASE-TX hub:
• the Link/Act LED will light,
• the FDX/Col LED will not light, and
Straight-through RJ-45
cable (Category 3, 4, or 5
for 10-Mbps connections or
Category 5 for 100-Mbps
connections)
Another switch
24-Port +1 Fiber Module Slot
Fast Ethernet Switch with VLAN

CHAPTER 3: Installation
11
• the 100 LED will light.
When a switch or other connected device is powered on:
• the Link/Act LED will light,
• the FDX/Col LED may light; this depends on the attached switch’s or other devices’ capabilities, and
• the 100 LED will light for 100-Mbps connection, otherwise it will stay dark to indicate a 10-Mbps
connection.

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
12
4. COM Port Configuration
This chapter explains how to set up the 24-Port +1 Fiber Module Slot Fast Ethernet Switch with VLAN through
a terminal-emulation program. (An emulation program is required to communicate with the switch’s internal
software.) Before you can access the switch, you must configure the terminal-emulation program. Suitable
programs include Windows®HyperTerminal or other third-party programs such as Telix and ProComm®.
Using the included RS-232 transfer to RJ-45 connector, connect the included RJ-45 cable for COM port
between a COM port on your PC and the switch’s console port as shown in Figure 4-1.
Figure 4-1. Typical console connection.
Once you connect the console to the switch, you’re ready to set up the terminal-emulation program. In this
manual, we use HyperTerminal as an example emulation program. Other terminal-emulation programs may
work; the setup principles are the same. Simply follow the menu prompts for setup.
24-Port +1 Fiber Module Slot
Fast Ethernet Switch with VLAN
Cable connects to the
PC’s COM port
RS-232 transfer to RJ-45
connector (included)
RJ-45 cable
for COM port
(included)

13
1. When you type Hyperterminal in the Windows operating system status line, the Connection
Description screen appears. See Figure 4-2.
Figure 4-2. Connection Description screen.
2. Type in a name to identify the connection (you can type any alphanumeric characters here). Then click
on one of the Windows default descriptive icons below the name panel. (Thes icons do not mean
anything; randomly assign one to identify the connection as an icon on your desktop.) Click on the OK
button to save your selections or the Cancel button to start over. If you click on OK, Figure 4-3 appears.
CHAPTER 4: COM Port Configuration

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
14
Figure 4-3. Selecting the COM port.
3. Since you won’t dial out via a modem, you only need to set the COM port. Select the available COM port
(usually COM1) from the drop-down menu in Figure 4-3. Click on the OK button to save the COM port
selection, or click on the Cancel button to start over. If you click on OK, the screen shown in Figure 4-4
appears.

15
CHAPTER 4: COM Port Configuration
Figure 4-4. COM1 Properties screen, Port Settings tab.
4. Select the Bits per second, Data bits, Parity, Stop bits, and Flow control parameters from the drop-down
menus. The default values are as follows.
Bits per second: 19200
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None
Click on the Restore Defaults button to restore the parameters to the factory defaults.
Or, select new values from the drop-down menus, then click on the Apply button. Click on the OK button
to save the selections or the Cancel button to clear the selections. If you click on OK, Figure 4-5 appears.

24-PORT +1 FIBER MODULE SLOT FAST ETHERNET SWITCH WITH VLAN
16
Figure 4-5. Initializing screen.
This screen displays while the Hyperterminal program initializes, then Figure 4-6 appears.

17
Figure 4-6. Main Menu access screen.
5. Type any key in Figure 4-6, and the Main Menu screen appears (see Figure 4-7).
CHAPTER 4: COM Port Configuration