Max Express Ethernet Switch
17 Ports 10/100Base-TX/FX
Base Unit: LB9217A-R2
Modules:
LB9213A, LB9214A, LB9215A
LB9216A, LB9218A, LB9219A
LB9220C-ST, LB9220C-SC
October 2003
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 24 hours, 7AM Monday to Midnight Friday: 877-877-BBOX FREE
technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: http://www.blackbox.com· E-mail: info@blackbox.com
Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
FEDERAL COMMUNICATIONS COMMISSION AND
CANADIAN DEPARTMENT OF COMMUNICATIONS
RADIO FREQUENCY INTERFERENCE STATEMENT
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 the Canadian
Department of Communications.
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 le ministère des Communications
du Canada.
Normas Oficiales Mexicanas (NOM)
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.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
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.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Preface
This manual describes how to install and use the 17-Port modular Fast Ethernet
Switch LB9217A. The switch introduced here is a base unit providing 3 expansion
slots, including two slots for 8-port modules and one slot for single-port module.
The 8-port modules allow for 10/100BaseT/TX or 100BaseFX; the single-port
module allows for 100BaseFX. Over a dozen of TX and FX modules or a
combination of TX/FX are available for fitting the switch. Furthermore, the 17Port Switch supports port-based VLAN and MAC-based trunking technologies.
To get the most out of this manual, you should have an understanding of
networking concepts such as bridging, IEEE 802.3u 100BaseTX/FX Fast Ethernet,
and local area networks (LANs).
In this manual, you will find:
• Features on the 17-Port Switch: LB9012A-R2
• Illustrative LED functions
• Installation instructions
• Configuration instructions for VLAN & trunking
• Specifications
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Table of Contents
PREFACE ...........................................................................................4
TABLE OF CONTENTS........................................................................5
INTRODUCTION .................................................................................6
LB9217A: 17-PORT M ODULAR F AST E THERNET SWITCH ...........................6
PRODUCT F EATURES ............................................................................7
PACKING L IST ....................................................................................8
FRONT P ANEL FOR B ASE UNIT...............................................................8
MODULES...........................................................................................9
MODULE I NSTALLATION .....................................................................10
SWITCH CONFIGURATION .............................................................. 14
SETTING UP C ONSOLE P ORT C ONNECTION ............................................. 14
MAIN M ENU .....................................................................................15
PORT S ETTINGS................................................................................. 16
PORT- BASED VLAN & SETTINGS ......................................................... 17
MAC-BASED TRUNKING & SETTINGS ................................................... 18
INSTALLATION................................................................................ 20
SELECTING A S ITE FOR THE S WITCH..................................................... 20
C ONNECTING TO P OWER ..................................................................... 20
C ONNECTING TO Y OUR NETWORK ........................................................21
TECHNICAL SPECIFICATIONS ........................................................ 22
PHYSICAL SPECIFICATIONS ........................................................... 23
TROUBLE-SHOOTING GUIDE...........................................................24
N O P OWER TO THE S WITCH ................................................................. 24
N O C ONNECTIVITY TO THE DATA T ERMINAL EQUIPMENT. .......................25
TRANSMISSION P ROBLEMS .................................................................. 26
GLOSSARY ....................................................................................... 28
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Introduction
LB9217A: 17-Port Modular Fast Ethernet Switch
The 17-Port Switch is a modular switch consisting of three expansion slots: two
for 8-port 10/100BaseTX/FX module, and one for 1-port 100BaseFX module. This
allows the switch to provide up to 17 ports when all the three slots are fit with
modules.
Cost-Effective Migration
The 17-Port Switch is capable of integrating legacy 10Mbps networks with
100Mbps Fast Ethernet networks. In addition, the 17-Port Switch provides an
easy and affordable solution for migrating from copper cabling to fiber
connection when it is equipped with suitable modules to provide both TX and FX
ports.
Flexibility through Modules
Seeing fiber connection become popular while the fiber cabling in small business
environment is still not widespread, the 17-Port Switch is designed to deliver
flexibility through a wide variety of TX and FX modules. Most of the modules
combine TX and FX ports to provide more customization options.
<NOTE> Desired module shall be ordered separately.
Fiber-Connectivity
As a Fast Ethernet switch, the 17-Port Switch is specifically designed to meet the
demanding need for fiber. The switch provides up to 17 ports for 100BaseFX,
multi-mode or single-mode fiber. For multi-mode fiber port, it allows SC, ST,
MT-RJ, VF-45 or LC connector. For single-mode fiber port, it allows SC
connector only. The fiber ports allow maximum segment distance of 75 km when
using single-mode fiber, and therefore, the 17-Port Fiber Switch is an optimum
solution for long distance connection.
Basic Configuration Features
The 17-Port Switch supports port-based Virtual Local Area Networking (VLAN)
and MAC-based trunking technologies. Such advanced features bring network
administrators a powerful yet easy-to-use tool to reduce unnecessary traffic,
efficiently segment the network, and enhance network security.
Standards Compliant
The 17-Port Switch fully complies with IEEE802.3 10BaseT as well as
IEEE802.3u 100BaseTX/FX standards.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Product Features
♦ Base unit with three expansion slots
♦ Auto-negotiation for speed and duplexity on TX ports
♦ True non-blocking architecture
♦ Full wire-speed forwarding rate
♦ Store-and-forward mechanism
♦ Back-pressure and IEEE 802.3x compliant flow control
♦ Supports 8K MAC addresses
♦ Supports 4M bits buffer memory
♦ Front panel reset button
♦ Front panel port status LEDs
♦ Standard 19" rack-mount size, one-unit-height
Modules:
♦ Allows two 8-port expansion modules: each of up to eight ports for
10/100BaseTX or 100BaseFX
♦ Supports auto-MDIX on TX ports of 8-port expansion module
♦ Allows one single-port expansion module: one port for 100BaseFX
Connectors:
♦ Choices of SC, ST, MT-RJ, VF-45, or LC connectors for 100BaseFX multi-
mode fiber module
♦ SC connector allowed for 100BaseFX single-mode fiber module
Basic Configuration Support:
♦ Supports port-based VLAN & MAC-based Trunking
♦ Programmable re-configuration for fixed speed and duplexity
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Packing List
When you unpack this product package, you will find the items listed below.
Please inspect the contents, and report any apparent damage or missing items
immediately to our authorized reseller.
y The 17-Port Switch
y User’s Manual
y AC power cord
y RS232 cable
y Rack Mount Ears with screws
Front Panel for Base Unit
The front panel of the 17-port Switch consists of three expansion slots to house
two 8-port modules and one single-port module.
An array of LED indicators on each module provides you with instant feedback on
the status of the switch.
Figure 1: Front View of 17-Port Modular Switch
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Modules
There are total 8 different modules available to choose that fit best with your
network environment needs. Please see the table below for detailed information.
Module Name 10/100RJ45 copper multi-mode fiber
LB9213A 8 0
LB9214A 0 8 (ST)
LB9215A 0 8 (SC)
LB9216A 6 2 (ST)
LB9218A 6 2 (SC)
LB9219A 4 4 (SC)
LB9220C-ST 0 1(ST)
LB9220C-SC 0 1 (SC)
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Module Installation
There are two sets of different modules available for LB9217A-R2, the base unit
for Max Express Ethernet Switch. Modules LB9213A~LB9219A are equipped
with 8 ports TX/FX while LB9220C-ST & LB9220C-SC are designed with one
fiber port to meet different needs in your network environment. Please see page
for detailed information.
9
A B C
Figure 2: Position A & B are designed for 8-port module, position C is for
single port module only
Step by Step Installation for 8-port Module:
LB9213A, LB9214A, LB9215A, LB9216A, LB9218A, LB9219A
1. Remove the module from the static-free container.
2. Unscrew the cover plate(s) from base unit on position A and or B.
3. Remove the plate and keep it for future use if modules need to be removed
later on.
4. With the power off, slide the module(s) into the desired slot, following the
internal plastic guide rails.
5. Once it is slid in fully, snap in the module to make a proper connection
and fasten the screws.
<NOTE> Before you start with any installation, ensure that the power is off.
The module is not hot swappable.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Step by Step Installation for Single Port Module:
LB9220C-ST & LB9220C-SC
1. Remove the module from the static-free container.
2. Unscrew the cover plate(s) from base unit on position C.
3. Remove the plate and keep it for future use if the module needs to be
detached later on. Keep the screws for the installation. Unlike 8-port
module, screws are not attached on single port module.
4. With the power off, slide the module(s) into the desired slot, following the
internal plastic guide rails.
5. Once it is slid in fully, snap in the module to make a proper connection
and fasten the screws that obtained from removing the original plate.
<NOTE> Before you start with any installation, ensure that the power is off.
The module is not hot swappable.
Figure 3: Removal of cover plate Fiber module being installed
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
S
LEDs & Reset Button
The array of LED indicators on the front panel conveys status and configuration
information to help you monitor and troubleshoot the switch.
o Reset
n
Z Port Status on 8-Port Modules
q Port
tatus on Single-Port Module
Figure 4: LED & Button Indicators on the 17-Port Switch
n Power
This LED comes on when the switch is connected to power and turned on.
o Reset Button
If the switch should become unresponsive, you may reset it by pressing this
button.
p Port Status on 8-Port Modules
The front panel of the 17-Port Switch allows two 8-port modules. The ports
numbered from 1 to 8 on full TX module.
The LEDs are located at the left side of each section, displaying status for each
respective port. Please refer to Table 1 for more details.
Table 1: Port Status
LED State Indication
LNK/ACT
FDX/COL
Steady A valid network connection established. LNK stands for LINK.
Flashing
Steady Connection in full duplex mode. FDX stands for FULL-DUPLEX.
Flashing
Off Connection in half-duplex mode.
Transmitting or receiving data. ACT stands for ACTIVITY.
Collision occurred. COL stands for COLLISION.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
q Port Status on Single-Port Module
A set of three LEDs conveys the port status on the single-port module. Consult
Table 2 for details.
Table 2: Port status on single-port Module
LED State Indication
Steady
100/TX
Flashing
A valid 100Mbps network connection established.
100 stands for 100Mbps.
Transmitting data.
TX stands for TRANSMIT.
Steady
10/RX
Flashing
A valid 10Mbps network connection established.
10 stands for 10Mbps.
Receiving data.
RX stands for RECEIVE.
Steady
FDX/COL
Flashing
Connection in full duplex mode.
FDX stands for FULL-DUPLEX.
Collision occurred.
COL stands for COLLISION.
Ports
Up to 17 Ports
The 17-Port Switch provides up to 17 ports for 10/100BaseTX or 100BaseFX, etc.
Multi-Connectivity
The 8-port modules allow for 10/100BaseTX or 100BaseFX, and the single-port
modules allow for 100BaseFX.
For 100BaseFX modules, the multi-mode fiber ports accommodate ST, SC, MTRJ, VF-45, or LC connector, and the single-mode fiber ports accommodate SC
connector only.
Longer Segment Distance
The maximum connection distance between a node and a switch port is up to 75
km over single-mode fiber for 100BaseFX networks. For information on the
cables for fiber module installation, please refer to Table 3.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Switch Configuration
This section explains the configuration of VLAN and trunking settings.
Setting up Console Port Connection
To configure your switch through the console port, it is necessary to first
configure a terminal emulation program. The HyperTerminal for Windows 95, 98,
and NT is suggested.
y First, check the switch, cables, and computers for proper installation before
configuration.
y Connect a PC or any VT100 compatible terminal to the console port on the
back of the unit using one RS232 serial cable. Turn on both end devices.
y Configure the baud rate and character format of the terminal or PC to match
the default settings shown below.
Console Port Default Settings
Terminal type VT100
Port type (COM 1~4)
Communication Mode
Flow Control Yes
Hardware Compression N/A
8 data bits, 1 stop bit, no parity baud rate of 9600bps
(for initial configuration)
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Main Menu
This main menu shows you the default configuration of the switch.
By default, all TX ports are set at auto-negotiation and flow control on, all FX
ports are set at 100Mbps with full duplex and flow control off, and all ports are
grouped into V1 (VLAN group 1).
These are the valid commands; capitalization is not required:
[W] Move the cursor up
[S] Move the cursor down
[A] Move the cursor to the left
[D] Move the cursor to the right
[R] Default
[V] Routing
[SPACE] Option
[ENTER] Apply and save the setting
[ESC] Abort
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Port Settings
The duplex mode and speed can be altered and the flow control can be turned
on/off to accommodate special needs.
Follow these steps to change the speed/duplex mode setting or to toggle flow
control ON/OFF:
y Move the cursor to MODE column to change the speed/duplex mode setting, or
move the cursor to FLW column to change the flow control setting
y Move the cursor and select a port
y Press [SPACE] and select a desired setting from the list that appears on the
screen
y Press [ENTER] to apply and save the setting
FX Ports
The port setting for the fiber module is slightly different from the TX port.
Consult the following table for a brief description on FX ports:
Table 4: Mode Setting on FX Ports
Communication Mode Description
Flow control Always N (off) and can not be changed
100FD 100Mbps at full duplex mode
100HD 100Mbps at half duplex mode
TX Ports
Consult the following table for a brief description on TX ports:
Table 5: Mode Setting on TX Ports
Communication Mode Description
Flow control on / off Y (on) / N (off)
Auto Auto-Negotiation
100FD 100Mbps at full duplex mode
100HD 100Mbps at half duplex mode
10FD 10Mbps at full duplex mode
10HD 10Mbps at half duplex mode
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Port-based VLAN & Settings
The 17-Port Switch allows up to sixteen port-based VLAN domains. Assign each
port to a VLAN group or a couple of VLAN groups according to accessibility
needs.
The VLAN setting: follow these steps to assign VLAN groups.
y Move the cursor to VLAN1 ~ 16 column
y Move the cursor and select a port
y Press [SPACE] and show V to the desired port
y Press [ENTER] to apply and save the setting
For example, here we have the port 17 assigned as routing (uplink) port. The port
1 ~ port 16 are divided into five different VLAN groups (VLAN 1, 2, 3, 4, and 5).
VLAN 1: port 1, 2, 3
VLAN 2: port 4, 5, 6
VLAN 3: port 7, 8, 9
VLAN 4: port 10, 11, 12
VLAN 5: port 13, 14, 15, 16, 17
For example, the port 1, 2, and 3 (VLAN 1) can not communicate with the port 4,
5, and 6 (VLAN 2).
The routing (uplink) port setting: follow these steps to have an assigned
routing (uplink) port. Then separate the rest each port to a different VLAN group.
The rest each port can only uplink through the assigned routing (uplink) port and
can’t communicate with each other.
y Enter [V] from the Main Menu
y Move the cursor to a desired routing (uplink) port
y Press [SPACE] and show V to the desired routing (uplink) port
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
y Press [ENTER] to apply and save the setting, then all the other ports will be
assigned to each different VLAN group and use the desired port as the routing
(uplink) port
For example, here we have the port 17 assigned as routing (uplink) port. The port
1 ~ port 16 are divided into each different VLAN groups. And the user on the
port 1 ~ port 16 can uplink through the port 17 only and can not communicate
with each other.
MAC-based Trunking & Settings
Trunking is also called link aggregation, which serves as a shortcut to increase
the bandwidth on your network. Trunking is a method of physically linking
together several ports to act as a single port with higher bandwidth. This
functionality allows scaling of bandwidth.
The 17-Port Switch supports trunking of up to 4 ports, either 2-port or 4-port.
For a 100BaseTX/FX network, you will gain 400Mbps bandwidth when you trunk
two ports, each of 200Mbps. The more ports you trunk, the more bandwidth you
gain.
Follow these steps to configure the 2-port trunking.
y Move the cursor to TRUNK column
y Move the cursor and select port 1
y Press [SPACE] and show T to port1 and port2
y Press [ENTER] to apply and save the setting
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
<NOTE> Can only choose port1 and port2 for 2-port trunking
Follow these steps to configure the 4-port trunking.
y Move the cursor to TRUNK column
y Move the cursor and select port 1
y Press [SPACE] and show T to port1 and port2
y Move the cursor and select port 3
y Press [SPACE] and show T to port3 and port4
y Press [ENTER] to apply and save the setting
<NOTE> The trunking ports will be disabled for VLAN group settings.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Installation
This chapter gives step-by-step installation instructions for the 17-Port Switch.
Selecting a Site for the Switch
As with any electric device, you should place the switch where it will not be
subjected to extreme temperatures, humidity, or electromagnetic interference.
Specifically, the site you select should meet the following requirements:
- The ambient temperature should be between 32 and 104 degrees Fahrenheit (0
to 40 degrees Celsius).
- The relative humidity should be less than 90 percent, non-condensing.
- Surrounding electrical devices should not exceed the electromagnetic field
(RFC) standards for IEC 801-3, Level 2 (3V/M) field strength.
- Make sure that the switch receives adequate ventilation. Do not block the
ventilation holes on each side of the switch or the fan exhaust port on the
rear of the switch.
- The power outlet should be within 1.8 meters of the switch.
Connecting to Power
y Connect the supplied AC power cord to the receptacle on the back of the
switch, and then plug it into a standard AC outlet with a voltage range from
100 to 240 Vac.
Figure 5: Rear view of the switch
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Connecting to Your Network
Cabling
y First, ensure the power of the switch and end devices is turned off.
<NOTE> Always ensure that the power is off before any installation.
y Prepare cable with corresponding connectors for each type of port in use.
<NOTE> To connect two regular RJ-45 ports between switches or hubs,
you need a cross-over cable.
y Consult Table 3 below for cabling requirements based on connectors and
speed.
y Connect one end of the cable to the switch and the other end to a desired
device.
y Once the connections between two end devices are made successfully, turn on
the power and the switch is operational.
Cable Length
The maximum distance between a node and a directly connected switch port on a
100BaseFX network is 75 km using 10/125µm single-mode fiber optic cable. It is
capable of spanning at most 2 kilometers when use of 62.5/125µm multi-mode
fiber-optic cable.
Table 3: Cable Specifications
Speed Connector Port Speed
10BaseT RJ-45 10/20 Mbps Cat. 3, 4 or 5 UTP/STP 100 m
100BaseTX RJ-45 100/200 Mbps Cat. 5 UTP/STP 100 m
100BaseFX ST, SC, MT-
RJ, VF-45, LC
100BaseFX SC 100/200 Mbps 10/125 µm single-mode fiber 75 km
Half/Full Duplex
100/200 Mbps 62.5/125 µm multi-mode fiber 2 km
Cable Max.
Distance
21
Technical Specifications
17-Port 10/100Base-TX/FX: LB9217A-R2
Applicable
Standards
Optional 8-port
Module Type
IEEE 802.3 10BaseT,
IEEE 802.3u 100BaseTX/FX
10/100BaseT/TX module
100BaseFX module, multi-mode or single-mode
Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Optional 1-port
Module Type
Speed
Switching Method Store-and-Forward
Chassis LED
Indicators
Module LED
Indicators
100BaseFX module, multi-mode or single-mode
10BaseT:
20Mbps for full-duplex; 10Mbps for half-duplex
100BaseTX/FX:
200Mbps for full-duplex; 100Mbps for half-duplex
14,880pps forwarding rate per port for 10Mbps Performance
148,800pps forwarding rate per port for 100Mbps
Power
For 8-port module:
LNK/ACT; FDX/COL (2 LEDs)
For 1-port module:
100/TX; 10/RX; FDX/COL (3 LEDs)
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Physical Specifications
9217A 17-Port Switch
Dimensions 440 × 285 × 45 mm
19” Rackmount Size, 1U
Weight
Power Input
Input Fuse
Power Consumption 52W Max.
Operating
Temperature
Storage Temperature -25° ~ 70°C (-13° ~ 158°F)
Humidity
Emissions FCC part 15 Class A, CE Mark
3.4kg (7.5lb)
100 ~ 240 Vac, 50~60 Hz
2A
0° ~ 40°C (32° ~ 104°F)
10 ~ 90%, non-condensing
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Trouble-shooting Guide
This trouble-shooting guide describes problems that could occur with the
Express Ethernet Switch. The guide states possible reasons for the
symptoms, and proper steps to take to solve the problems.
No Power to the Switch
Symptom: Power cord is connected to the switch, but all LEDs, including the
Power LED, are off.
Possible Problem
Solution
Loose power
connection or
faulty power supply
1. Check both ends of the power cord to make certain that
they are securely connected to the power receptacle on the
switch and to the power outlet.
2. Verify that the power outlet has power.
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Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
No Connectivity to the Data Terminal Equipment.
Symptom: An Ethernet switch cannot communicate to the directly connected
computers or network segments.
Possible Problem
Solution
1. Check cables for a secure connection.
2. Verify that the correct type of cable is in use.
• For connection to a PC or a network interface card (NIC),
use a straight-through cable.
• For uplink to another switch or hub, use a cross-wire
cable, or use a regular straight-through cable connected to
Incorrect or faulty
cabling
Dysfunctional NIC
on a PC or
workstation
Packet Overflow or
Hardware problem
the uplink port with the uplink button activated.
• Refer to Table 1 for cable specifications.
1. Verify proper cable preparation.
2. Use a time domain reflectometer (TDR) or other cable-
checking device to verify that the cable has no opens,
shorts, or other problems.
3. Swap the cable with another of the same kind to see if the
cable is bad.
• Replace or fix the faulty cable as necessary.
Run the diagnostic supplied by the vendor on the NIC to
determine if it is functioning properly. If it is not, replace it.
Reset the switch by pressing the reset button or turn the
switch off, then on again.
25
Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
No Connectivity to Certain Nodes on the Network
Symptom: Data terminal equipment (DTE) connected to the switch can not send
or receive information from certain segments on the same network or across to
another LAN or WAN.
Possible Problem Solution
Check for a damaged RJ-45 jack, or fiber SC or ST type
Hardware problem
connector.
Transmission Problems
Symptom: Connections across a LAN switch are slow or unreliable.
Possible Problem Solution
Express Ethernet Switches are all equipped with auto-
Incorrect full- or
half-duplex
settings
Exceeded cabling
distance or
misused cable
Bad adapter in
attached device
negotiation to communicate with other DTEs on the network
for the best available performance.
1. Verify if the connected NIC is equipped with auto-
negotiation (this is not the same as auto-sensing).
2. Change the DIP switch setting if available.
1. Ensure that the proper cable is in use and that the
recommended distance is not exceeded. For information,
refer to Table 9.
2. Check the cable distance using a cable tester or TDR.
Verify that the cable lengths attached to the switch meet
Ethernet/IEEE 802.3 specifications.
3. If the distance is out of specification, reduce the length of
the cable or add a repeater, ensuring no more than four
repeaters are attached.
Check the switch port statistics. If excessive errors are found,
run the adapter card diagnostic utility to determine the
problem.
26
Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Trademarks
Any trademarks are acknowledged to be the property of the trademark
owners.
27
Glossary
10BASE-T
100BASETX
100BASE-FX
autonegotiation
Category 5
Collision
Ethernet
Fast
Ethernet
fiber-optic
cable
full-duplex
half-duplex
IEEE 802
LAN
MAC
address
Mbps
segment
store-andforward
switch
UTP
wire speed
Max Express Ethernet Switch LB9217A-R2 & Applicable Modules
Networking standard for twisted-pair cabling capable of carrying data
at 10 Mbps.
Networking standard for two pairs of high-quality twisted-pair wires
carrying data at 100 Mbps.
Networking standard for fiber-optic cabling capable of carrying data
at 100 Mbps.
Two-part process by which a network device automatically senses the
speed and duplex capability of another device.
Networking standard certifying that a copper wire cable can carry data
at up to 100 Mbps.
Concurrent Ethernet transmissions from two or more devices on the
same segment.
Networking standard for transmitting data at 10 Mbps.
Networking standard for transmitting data at 100 Mbps.
Cable made of thin glass threads that carry data in the form of light
pulses.
A communications technique that allows bi-directional, simultaneous
transmission between two devices on a single segment.
A communications technique in which one device on a segment
transmits while the other receives, then the process is reversed.
Set of Institute of Electrical and Electronic Engineers standards for
defining methods of access and control on LANs.
Local area network. A network where computers are connected in close
proximity, such as in the same building or office park. A system of
LANs connected at a distance is called a wide-area network (WAN).
Media access control address. A hardware address that uniquely
identifies each node of a network.
Millions of bits per second.
Section of a network bounded by bridges, routers, hubs, or switches.
Dividing an Ethernet into multiple segments is a common way to
increase bandwidth on a LAN.
Switching feature where the port receives the entire incoming frame
and stores it in the buffers while checking for runts and error frames
before forwarding it to the destination port.
Device that filters and forwards packets between LAN segments.
Unshielded twisted pair; cabling with wires that are twisted around
each other. The individual wires are not insulated.
The ability to handle the fastest rate of traffic that a generator can
deliver without dropping packets. On a 100 Mbps connection, wirespeed traffic is 148,809 packets per second using 64-byte frames or
8,127 packets per second using 1,518-byte frames.
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