Black Box Switch LB9002A ST R2 User Manual

Express Ethernet Switch  
August, 2002  
LB9002A-ST-R2  
Express  
Ethernet Switches  
Order toll-free in the U.S. 24 hours, 7 A.M. 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  
CUSTOMER  
SUPPORT  
INFORMATION  
1
 
Express Ethernet Switch  
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.  
3
 
Express Ethernet Switch  
About This Manual  
This manual describes the Black Box Express Ethernet Switch in these basic sections:  
?? Product Features  
?? Installation  
?? Trouble-shooting  
?? Glossary of Terms  
Product Features  
This section examines the key features, the physical features, and the product specifications  
of each model.  
Installation  
This section leads with a Quick Tip, and continues with a detailed description of  
Connecting to Power and Connecting to Your Network with the two types of cable: copper-  
based and fiber-optic. The section concludes with instructions on using the Uplink Function.  
Trouble-shooting  
This guide leads you through trouble-shooting the most common networking problems.  
Glossary  
A brief glossary defines the terms used in this manual.  
4
 
Express Ethernet Switch  
This manual services the compact size of Express Ethernet Switch, LB9002A-SC/ST, which  
has 1 port TX and 1 port FX.  
5
 
Express Ethernet Switch  
Table of Contents  
About This Manual ............................................................................................................................4  
Product Features ...............................................................................................................................4  
Installation .........................................................................................................................................4  
Trouble-shooting..............................................................................................................................4  
Glossary..............................................................................................................................................4  
Product Features.................................................................................................................................7  
Key Features......................................................................................................................................7  
Physical Features ..............................................................................................................................8  
Illustrated Compact-Size Switches ...........................................................................................9  
LB9002A-SC-R2/LB9002A-ST-R2.....................................................................................9  
Fiber Module Installation .........................................................................................................10  
Product Specifications .................................................................................................................... 10  
Installation ......................................................................................................................................... 12  
Quick Tip .........................................................................................................................................12  
Connecting to Power......................................................................................................................12  
Connecting to Your Network .......................................................................................................12  
Copper-based cabling................................................................................................................12  
Fiber-optic cabling.....................................................................................................................13  
Uplink or MDI Function ...............................................................................................................13  
No Power to the Switch.................................................................................................................14  
No Connectivity to the Data Terminal Equipment...................................................................14  
No Connectivity to Certain Nodes on the Network..................................................................14  
Transmission Problems .................................................................................................................15  
Trademarks....................................................................................................................................... 16  
Glossary.............................................................................................................................................. 16  
6
 
Express Ethernet Switch  
Product Features  
This section addresses:  
?? Key Features  
?? Physical Features (including LEDs)  
?? Product Specification  
Key Features  
?? Auto-negotiation for speed and duplex on every TX port  
?? Plug & play  
?? True non-blocking architecture  
?? Full wire-speed forwarding  
?? Store-and-forward switching mechanism  
?? Runt and CRC filtering eliminate erroneous packets to optimize network bandwidth  
?? Back pressure for half-duplex  
?? IEEE 802.3x flow control for full-duplex  
?? MAC address filtering and relearning that automatically adjusts to the network  
configuration  
?? Comprehensive array of LED indicators that communicate the status of the switch and  
trouble-shooting information  
?? Designed in compliance with 10BASE-T, IEEE802.3u, 100BASE-TX, and 100BASE-  
FX standards  
?? Full compatibility with standard Ethernet applications, internetworking systems, and  
client-side adapters to minimize migration cost  
7
 
Express Ethernet Switch  
Physical Features  
?? AC Input:100-250VAC, 47-63Hz internal universal power supply  
?? Input Fuse: 2A  
?? Power Consumption: 7W  
?? Operating Temperature: 0 C- 40 C (32 F- 104 F)  
?? Storage Temperature: -25 C- 70 C (-13 F-158 F)  
?? Humidity: 10%-90% non-condensing  
?? Emission Compliance: FCC part 15 class B, CE Mark, VCCI Class  
B
?? Safety: UL  
?? Dimensions: W254mm x D135mm x H36mm (10" x 5.3” x 1.4")  
?? Net weight: 0.9kg (2.1lb)  
8
 
Express Ethernet Switch  
Illustrated Compact-Size Switches  
The front panel of the compact switch has two or eight ports and LED indicators to provide  
instant feedback on the status of the switch. This group includes LB9002A-SC/ST, and  
LB9108A.  
LB9002A-SC-R2/LB9002A-ST-R2  
Figure 1: Compact-size, 2-port with fiber LB9002A-SC-R2 (also available in ST)  
?
10/100TX  
100FX  
LNK/ACT PWR  
MDI  
MDI-X  
FDX/COL 100  
TX  
RX  
?
??  
Figure 2: LED and functions of the two-port switch (LB9002A-SC-R2 & LB9002A-ST-  
R2)  
? Port Status for the FX port  
Two LEDs , LNK/ACT and FDX/COL, convey the status of the port as detailed on the  
following table  
? Port Status for the TX port  
Three LEDs, LNK/ACT, FDX/COL, and 100, convey the status of the port as detailed on  
the following table.  
Table 1: Port status display LEDs for compact-size, 1 port TX, 1 port FX (part#  
LB9002A-ST/SC-R2)  
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Express Ethernet Switch  
LED  
State  
Indication  
Steady  
Flashing  
Steady  
The port has established a valid network connection  
The port is receiving or transmitting data  
LNK/ACT  
(link/activity)  
The port has established a valid 100 Mbps connection  
100  
Off  
The port has established a valid 10 Mbps network connection  
The connection is in full-duplex mode  
Steady  
Flashing  
Off  
FDX/COL  
Collision occurred in the 10/100 domain  
(full-duplex/collision)  
The connection is in half-duplex mode  
*Collision will only occur on the half-duplex mode of transmission between two devices.  
? Power  
This LED illuminates when the switch is connected to a power supply and turned on.  
? MDI Button  
Also referred to as the uplink button.  
The following chart details the LED status displays.  
Table 2: Port Status Display  
LED  
State  
Steady  
Flashing  
Steady  
Off  
Indication  
LNK (link)  
ACT (activity)  
The port has established a valid network connection  
The port is transmitting or receiving data  
The connection is in full-duplex mode  
The connection is in half-duplex mode  
FDX (full-duplex)  
? Uplink button  
Fiber Module Installation  
?? Turn off the power. The module is not hot- swappable.  
?? Remove the cover plate, retaining screws and plate for later replacement  
?? Slide in the module, following the guides  
?? Snap in the module to attain a firm connection  
Product Specifications  
All Black Box Express Ethernet Switches auto-negotiate 10/100 Mbps, use store-and-  
forward and non-blocking architectures and use back pressure for half-duplex and IEEE  
802.3x compliant flow-control for full-duplex. The Express Ethernet Switches support  
substantial MAC entries with address filtering and relearning capabilities.  
ETHERNET STANDARDS  
IEEE 802.3 10BASE-T; IEEE 802.3u 100BASE-TX/FX  
10  
 
Express Ethernet Switch  
CABLE  
10BASE-T: 2-pair UTP Cat. 3, 4, or 5;  
100BASE-TX: 2-pair UTP Cat. 5;  
100BASE-FX: 62.5/125 multi-mode fiber-optic cable  
SWITCHING METHOD  
Store-and-Forward  
FORWARDING RATE  
14,800 pps for 10 Mbps;  
148,800 pps for 100 Mbps  
TEMPERATURE  
Operating: 32 to 104°F (0 to 40°C)  
Storage: -13 to +158°F (-25 to +70°C)  
HUMIDITY  
10 to 90% non-condensing  
EMISSION COMPLIANCE AND SAFETY STANDARDS  
FCC part 15 Class B, CE Mark, VCCI, cUL  
11  
 
Express Ethernet Switch  
Table 8: Specifications per model  
Model  
Dimension "W x "D x "H  
Weight  
Output  
Pwr  
7W  
LB9002A-SC/ST  
10 x 5.3 x 1.4  
2.1 lb.  
0.9 kg  
100-250VAC  
47-63 Hz  
25.4 x 13.5 x 3.6 cm  
Installation  
Quick Tip  
Install a Black Box Express Ethernet Switch as a plug-and-play device. No special  
configuration is required. Details below are consistent with the installation of any electronic  
device  
Place the Black Box Express Ethernet 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 room 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 the 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  
Connect the supplied AC power cord to the receptacle on the back of the switch, and then  
plug the cord into a standard AC outlet with a voltage range from 100 to 120 VAC. For  
external power supply units, plug the jack into the DC receptacle on the front of the unit,  
and plug the power supply unit into a 110~220 AC outlet.  
Turn the switch on by flipping the ON/OFF switch on the rear of the unit to the I (ON)  
position. The O position is OFF.  
Connecting to Your Network  
If you are making a connection to a server or workstation, be sure that it has a properly  
installed 100BASE-TX (or 100BASE-FX if the switch does not contain 100BASE-TX  
ports) network interface card. Connect the RX/TX jacks on the target device to the TX/RX  
jacks on the switch and the RJ-45 jacks on the target device to the RJ-45 jacks on the  
switch.  
Use the uplink port for connecting to a regular (i.e. non-uplink) port of a hub or another  
switch. If connecting to an uplink port of a hub or another switch, use any port. There is no  
uplink issue with fiber ports.  
Copper-based cabling  
Connect cables to computers or network segments into the RJ-45 ports on the front of the  
switch.  
12  
 
Express Ethernet Switch  
The cable must be a Category 5 shielded twisted-pair or unshielded twisted-pair (STP/UTP)  
cable for 100BASE-TX, or Category 3, 4, or 5 STP/UTP cable for 10BASE-T. Consult  
Table 9 for further details.  
Fiber-optic cabling  
Prepare a pair of fiber optic cables with SC or ST type connectors at both ends. The cable  
for fiber ports must be a 62.5/125 micron fiber-optic cable for 100BASE-FX. Consult Table  
9 for further details.  
Table 9: Cable Specifications  
Speed  
Connector Port Speed  
Cable  
Range  
Half/Full  
Duplex  
100BASE-TX  
10BASE-T  
RJ-45  
100/200 Mbps  
10/20 Mbps  
200 Mbps  
Category 5 UTP  
100 meters  
100 meters  
RJ-45  
Category 3, 4, or 5 UTP  
100BASE-FX  
ST or SC  
62.5/125 micron fiber-  
optic cable  
2 kilo-meters  
Uplink or MDI Function  
A network of switches connected (or cascaded) together via uplink ports is termed a  
“collapsed backbone.” The uplink function transforms the adjacent or indicated port into an  
uplink port with a push of the button or by sliding the switch. This allows connection to  
another switch or hub without preparing crossover cable. However, this is unnecessary  
when either connecting directly to the uplink port of another switch or hub or when  
connecting fiber ports between switches or hubs.  
13  
 
Express Ethernet Switch  
Trouble-shooting Guide  
This trouble-shooting guide describes problems that could occur with the Express Ethernet  
Switch. The guide states possible reasons for the problems, and possible 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  
Solution  
Problem  
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.  
Loose power  
connection or  
faulty power supply  
2. Verify that the power outlet has power.  
No Connectivity to the Data Terminal Equipment.  
Symptom: An Ethernet switch cannot communicate to the directly connected computers or  
network segments.  
Possible  
Solution  
Problem  
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 the uplink port with the uplink button activated.  
Incorrect or faulty  
?? Refer to Table 9 for cable specifications.  
cabling  
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.  
Dysfunctional NIC Run the diagnostic supplied by the vendor on the NIC to determine if it is functioning properly. If it is not, replace  
on a PC or  
workstation  
it.  
Packet Overflow or  
Hardware problem  
Reset the switch by pressing the reset button or turn the switch off, then on again.  
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  
Solution  
Problem  
Hardware problem Check for a damaged RJ-45 jack, or fiber SC or ST type connector.  
14  
 
Express Ethernet Switch  
Transmission Problems  
Symptom: Connections across a LAN switch are slow or unreliable.  
Possible  
Solution  
Problem  
Express Ethernet Switches are all equipped with auto-negotiation to communicate with other DTEs on the  
network for the best available performance.  
Incorrect full- or  
half-duplex  
settings  
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.  
Exceeded cabling  
distance or  
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.  
misused cable  
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.  
Bad adapter in  
Check the switch port statistics. If excessive errors are found, run the adapter card diagnostic utility to determine  
attached device the problem.  
15  
 
Express Ethernet Switch  
Trademarks  
Any trademarks are acknowledged to be the property of the trademark owners.  
Glossary  
Networking standard for twisted-pair cabling capable of carrying data at 10 Mbps.  
10BASE-T  
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.  
100BASE-TX  
100BASE-FX  
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.  
auto-  
negotiation  
Category 5  
collision  
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.  
Ethernet  
Fast Ethernet  
fiber-optic  
cable  
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.  
full-duplex  
half-duplex  
IEEE 802  
LAN  
MAC address  
Mbps  
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.  
segment  
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.  
store-and-  
forward  
switch  
UTP  
The ability to handle the fastest rate of traffic that a generator can deliver without dropping packets. On a 100 Mbps  
connection, wire-speed traffic is 148,809 packets per second using 64-byte frames or 8,127 packets per second using  
1,518-byte frames.  
wire speed  
16  
 

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