Smc 2671W User Manual

EZ Connect

TM

2.4 GHz
Wireless Ethernet Adapter
User Guide

From SMC’s EZ line of low-cost workgroup LAN solutions

38 Tesla
Irvine, CA 92618
Phone: [phone]

October 2003

150000030200E R01 F1.0

Copyright

Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable.
However, no responsibility is assumed by SMC for its use, nor for any infringements of patents
or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of SMC. SMC reserves the right to
change specifications at any time without notice.

Copyright © 2003 by

SMC Networks, Inc.

38 Tesla

Irvine, CA 92618

All rights reserved.

Trademarks:

SMC is a registered trademark; and EZ Connect is a trademark of SMC Networks, Inc. Other
product and company names are trademarks or registered trademarks of their respective
holders.

C

OMPLIANCES

FCC - Class B

This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
the interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:

• Reorient the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected

• Consult the dealer or an experienced radio/TV technician for help
FCC Caution: To assure continued compliance, (example - use only shielded

interface cables when connecting to computer or peripheral devices) any changes
or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.

IMPORTANT NOTE:
FCC Radiation Exposure Statement

FCC Radiation Exposure Statement: This equipment complies with FCC radiation
exposure limits set forth for an uncontrolled environment. This equipment should
be installed and operated with a minimum distance of 20 centimeters (8 inches)
between the radiator and your body. This transmitter must not be co-located or
operating in conjunction with any other antenna or transmitter.

Industry Canada - Class B

This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus as set out in the interference-causing equipment standard
entitled “Digital Apparatus,” ICES-003 of the Department of Communications.

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C

OMPLIANCES

Cet appareil numérique respecte les limites de bruits radioélectriques applicables
aux appareils numériques de Classe B prescrites dans la norme sur le matériel
brouilleur: “Appareils Numériques,” NMB-003 édictée par le ministère des
Communications.

EC Conformance Declaration - Class B

SMC contact for these products in Europe is:

SMC Networks Europe,
Edificio Conata II,
Calle Fructuós Gelabert 6-8, 2
08970 - Sant Joan Despí,

Barcelona, Spain.

This information technology equipment complies with the requirements of the
R&TTE Directive 99/5/EC as well as the Council Directive 89/336/EEC on the
Approximation of the laws of the Member States relating to Electromagnetic
Compatibility and 73/23/EEC for electrical equipment used within certain voltage
limits and the Amendment Directive 93/68/EEC. For the evaluation of the
compliance with these Directives, the following standards were applied:

RFI
Emission:

Immunity: • Product family standard according to EN 55024:1998

LVD: • EN 60950 (A1/1992; A2/1993; A3/1993; A4/1995; A11/1997)
MDD: • IEC 60601-1

• Limit class B according to EN 55022:1998, IEC 60601-1-2 (EMC,
medical)

• Limit class B for harmonic current emission according to EN 61000-3-2/
1995

• Limitation of voltage fluctuation and flicker in low-voltage supply system
according to EN 61000-3-3/1995

• Electrostatic Discharge according to EN 61000-4-2:1995
(Contact Discharge: ±4 kV, Air Discharge: ±8 kV)

• Radio-frequency electromagnetic field according to EN 61000-4-3:1996
(80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)

• Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/DC
power supply: ±1 kV, Data/Signal lines: ±0.5 kV)

• Surge immunity test according to EN 61000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)

• Immunity to conducted disturbances, Induced by radio-frequency fields:
EN 61000-4-6:1996 (0.15 - 80 MHz with
1 kHz AM 80% Modulation: 3 V/m)

• Power frequency magnetic field immunity test according to
EN 61000-4-8:1993 (1 A/m at frequency 50 Hz)

• Voltage dips, short interruptions and voltage variations immunity test
according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30%
Reduction @500 ms, >95% Reduction @5000 ms)

o

, 4a,

ii

C

OMPLIANCES

Safety Compliance

Underwriters Laboratories Compliance Statement

Important! Before making connections, make sure you have the correct cord set.

Check it (read the label on the cable) against the following:

Operating Voltage Cord Set Specifications

120 Volts UL Listed/CSA Certified Cord Set

Minimum 18 AWG
Type SVT or SJT three conductor cord
Maximum length of 15 feet
Parallel blade, grounding type attachment plug

rated 15 A, 125 V

240 Volts (Europe only) Cord Set with H05VV-F cord having three

conductors with minimum diameter of 0.75 mm
IEC-320 receptacle
Male plug rated 10 A, 250 V

The unit automatically matches the connected input voltage. Therefore, no
additional adjustments are necessary when connecting it to any input voltage
within the range marked on the power adapter.

2

iii

C

OMPLIANCES

Wichtige Sicherheitshinweise (Germany)

1. Bitte lesen Sie diese Hinweise sorgfältig durch.

2. Heben Sie diese Anleitung für den späteren Gebrauch auf.

3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie
keine Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes
Tuch zur Reinigung.

4. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht
zugänglich sein.

5. Das Gerät ist vor Feuchtigkeit zu schützen.

6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen
oder Fallen könnte Beschädigungen hervorrufen.

7. Die Belüftungsöffnungen dienen der Luftzirkulation, die das Gerät vor
Überhitzung schützt. Sorgen Sie dafür, daß diese Öffnungen nicht abgedeckt
werden.

8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.

9. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann.
Es sollte auch nichts auf der Leitung abgestellt werden.

10. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.

11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es
vom Stromnetz trennen. Somit wird im Falle einer Überspannung eine
Beschädigung vermieden.

12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten
in das Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag
auslösen.

13. Öffnen sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen
Sicherheit nur von authorisiertem Servicepersonal geöffnet werden.

14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen
und von einer qualifizierten Servicestelle zu überprüfen:
a.Netzkabel oder Netzstecker sind beschädigt.
b.Flüssigkeit ist in das Gerät eingedrungen.
c. Das Gerät war Feuchtigkeit ausgesetzt.
d.Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert

oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen.
e.Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f. Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

15. Stellen Sie sicher, daß die Stromversorgung dieses Gerätes nach der EN
60950 geprüft ist. Ausgangswerte der Stromversorgung sollten die Werte von
AC 7,5-8 V, 50-60 Hz nicht über oder unterschreiten sowie den minimalen
Strom von 1 A nicht unterschreiten.

Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000 beträgt
70 dB(A) oder weniger.

iv

T

ABLE OF

EZ Connect™ 2.4 GHz Wireless Ethernet

Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Package Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Hardware Description . . . . . . . . . . . . . . . . . . . . . . . 3

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . 7

System Configuration . . . . . . . . . . . . . . . . . . . . . . . 8

EZ Installation Wizard . . . . . . . . . . . . . . . . . . . . . . . 9

Using IPCONFIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Utility Installation and Configuration . . . . . . . . . 11

Using the Configuration Utility . . . . . . . . . . . . . . . . . . . . . . 12

Utility Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

IP Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Statistic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wireless Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

About . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

C

ONTENTS

Configuring Your IP Address . . . . . . . . . . . . . . . . 25

Windows 98/Me . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

v

T

ABLE OF CONTENTS

Web Management . . . . . . . . . . . . . . . . . . . . . . . . .33

Browser Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Disable Proxy Connection . . . . . . . . . . . . . . . . . . . . . . . 33

Internet Explorer (5.5 or above) in Microsoft Windows . 33

Internet Explorer in Macintosh . . . . . . . . . . . . . . . . . . . . 33

Navigating the Web Browser Interface . . . . . . . . . . . . . . . 34

Making Configuration Changes . . . . . . . . . . . . . . . . . . . 34

System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

MAC Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Network Configuration and Planning . . . . . . . . . 52

Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Ad Hoc Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Infrastructure Wireless LAN . . . . . . . . . . . . . . . . . . . . . . 53

Infrastructure Wireless LAN for Roaming Wireless

PCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

A Wireless LAN with Internet Access . . . . . . . . . . . . . . . 55

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 56

SMC Networks 802.11b Wireless Product

Maximum Distance Table . . . . . . . . . . . . . . . . . . . . . . . . . 57

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

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™

EZ C

W

IRELESS

Introduction

SMC’s EZ Connect 2.4 GHz Wireless Ethernet Adapter
(SMC2671W) can function as:

• an Ethernet adapter, providing a wireless connection via an
RJ-45 connection to devices such as Microsoft Xbox and
Ethernet ready embedded devices

• a standard IEEE 802.11b access point

• a wireless range extender, allowing you to effectively extend

the coverage of another SMC2671W that is configured to
operate in Access Point mode

This solution offers fast, reliable wireless connectivity with
considerable cost savings over wired LANs (eliminates long-term
maintenance overhead for cabling). Just install enough wireless
access points to cover your network area, plug wireless cards into
your notebooks or install wireless adapters into your desktops,
and start networking.

ONNECT

E

THERNET

2.4 GH

A

DAPTER

Z

Use this device in conjunction with SMC’s EZ Connect Wireless
Cards to create an instant network that integrates seamlessly
with Ethernet LANs. Moreover, moving or expanding your network
is as easy as moving or installing additional access points – no
wires!

1

EZ C

ONNECT

™ 2.4 GHZ W

IRELESS ETHERNET ADAPTER

Package Checklist

The EZ Connect 2.4 GHz Wireless Ethernet Adapter package
includes:

• One EZ Connect 2.4 GHz Wireless Ethernet Adapter
(SMC2671W)

• One 5 VDC power adapter

• Installation CD containing this User Guide, EZ Installation

Wizard, and Utility program

• One RJ-45 cable

Please register this product and upgrade the product warranty on
SMC’s web site at http://www.smc

Inform your dealer if there are any incorrect, missing, or damaged
parts. If possible, retain the carton, including the original packing
materials. Use them again to repack the product in case there is a
need to return it.

.com

2

H

ARDWARE

The Wireless Ethernet Adapter supports 1, 2, 5.5 and 11 Mbps
half-duplex connections to Ethernet networks. This device is fully
compliant with 2.4 GHz DSSS CSMA/CA wireless networking as
defined in IEEE 802.11b. It can be connected via an RJ-45
connection to devices such as Nintendo GameCube, Microsoft
Xbox, Sony PlayStation II, and Ethernet ready embedded
devices. It can also function as an IEEE 802.11b Access Point or
as a Range Extender (see “Introduction” on page 1).

D

ESCRIPTION

Power Connector

RJ-45 Port

Figure 1. Rear Panel

Item Description

Power Inlet Connect the included power adapter to this inlet.

Warning: Using the wrong type of power adapter may damage
your adapter.

LAN Port Fast Ethernet port (RJ-45). Connect device (such as a PC, hub

MDI/MDIX
Switch

Note: If you use the RELOAD button at the bottom, the Wireless

or switch) on your local area network to this port.

Press down the switch to connect to a network device with a
straight-through twisted-pair cable; otherwise, connect to the
network device with (MDI-X) station ports at both ends by suing
crossover cabling.

Ethernet Adapter performs a power reset. If the button is
held depressed for over 5 seconds, all the LEDs will
illuminate and the factory settings will be restored.

MDI/MDIX Switch

3

H

ARDWARE DESCRIPTION

Applications

EZ Connect wireless products offer a fast, reliable, cost-effective
solution for wireless Ethernet client access to the network in
applications such as:

• Video Game Systems

Provides wireless Internet access for users of video game
systems such as Nintendo GameCube, Microsoft Xbox and
Sony PlayStation II

• Remote access to corporate network information

E-mail, file transfer, and terminal emulation

• Difficult-to-wire environments
Historical or old buildings, asbestos installations, and open
areas where wiring is difficult to employ

• Frequently changing environments

Retailers, manufacturers, and banks which frequently
rearrange the workplace or change locations

• Temporary LANs for special projects or peak periods

Trade shows, exhibitions, and construction sites that need a
temporary setup. Retailers, airline, and shipping companies
that need additional workstations for peak periods. Auditors
who require workgroups at customer sites

• Access to databases for mobile workers

Doctors, nurses, retailers, or white-collar workers who need
access to databases while being mobile in a hospital, retail
store, in an office, or on a campus

• SOHO users

SOHO (Small Office and Home Office) users who need easy
and quick installation of a small computer network

4

LED Indicators

The Wireless Ethernet Adapter includes three status LED
indicators, as described in the following figure and table.

Figure 2. Front Panel

LED Status Description

Wireless
Link

Ethernet
Status

Power (PWR) On (Red) Power is being supplied.

TX/RX Flashing (Green) The device is transmitting or receiving

LNK/
ACT

On (Orange) The device has established a valid

On (Green) The device has established a valid

Flashing The device is transmitting or receiving

data through wireless links.

10Mbps Ethernet link.

100Mbps Ethernet link.

data on the Ethernet LAN

LED I

NDICATORS

5

H

ARDWARE DESCRIPTION

System Requirements

Before you install the Wireless Ethernet Adapter, be sure you
have met the following requirements:

• An AC power outlet (100~240 V, 50~60 Hz)

• An available RJ-45 (UTP) port on an Ethernet hub or switch

• 802.11b compliant wireless Ethernet adapters with TCP/IP

protocols installed

• TCP/IP network protocol installed on each PC that needs to
access the Internet.

• A web browser, such as Microsoft Internet Explorer 5.5 or
above installed on one PC at your site for configuring the
Wireless Ethernet Adapter.

6

H

ARDWARE INSTALLATION

1. Select the Site – Choose a location for your Wireless Ethernet
Adapter. Usually, the best location is at the center of your
wireless coverage area, if possible within line-of-sight of all
wireless devices.

2. Place the Wireless Ethernet Adapter in a position that gives it
maximum coverage. Normally, the higher you place the
antenna, the better the performance.

3. Position the antennas in the desired positions. For more
effective coverage, position the antennas along different axes.
For example, try positioning the antennas around 45 to 90
degress apart. (The antennas emit signals along the

toroidal plane – and thus provide more effective
coverage when positioned along different axes.)

4. If used in Ethernet Adapter mode, connect the Ethernet cable
to the RJ-45 socket of the device will communicate wirelessly
with an access point.

5. If used in Acces Point, connect the Ethernet cable – The
SMC2671W can be wired to an Ethernet network through an
Ethernet device such as a hub or a switch using category 3, 4,
or 5 UTP Ethernet cable and an RJ-45 connector. (See
“Hardware Description” on page 3 for MDI/MDI-X cabling.)

6. Connect the power cable – Connect the power adapter cable
to the 5 VDC power socket on the rear panel.

Warning: Use only the power adapter supplied with the

SMC2671W.

7

S

YSTEM

The SMC2671W is a Plug-and-Play device. This means that, in
most cases, you will not need to configure it.

The SMC2671W Wireless Ethernet Adapter includes an SNMP
agent that is accessible through an SNMP manager application
(Refer to “Using the Configuration Utility” on page 12.) The latest
version may be downloaded from the SMC web site specified on
the back cover of this manual.

The SMC2671W can be configured by a web browser, which is
Internet Explorer 5.5 or above. Using the web management
interface, you can configure the Wireless Ethernet Adapter and
view statistics to monitor network activity.

Before you attempt to log into the SMC2671W’s web-based
administration, please verify the following.

1. Your browser is configured properly (see below).

2. Disable any firewall or security software that may be running.

C

ONFIGURATION

3. Confirm that you have a good link LED where your computer
is plugged into the Wireless Ethernet Adapter. If you don’t
have a link light – then try another cable to get a good link.

4. To access the Internet through the Wireless Ethernet Adapter,
you must configure the network settings of the computers on
your LAN to use the same IP subnet as the Wireless Ethernet
Adapter. The default network settings for the Wireless
Ethernet Adapter are:

Gateway IP Address: 192.168.2.1
Subnet Mask: 255.255.255.0
SMC2671W IP Address: 192.168.2.25

8

EZ I

To configure your SMC2671W, first verify that your computer has
an IP address in the same address scheme as the SMC2671W. If
you are not familiar with this procedure, see the “Using
IPCONFIG” section below.

Note: The default IP address of the SMC2671W is 192.168.2.25.

1. Insert the SMC EZ Installation Wizard & Documentation CD
into your CD-ROM drive.

2. The EZ Installation Wizard will appear. Click “Configuration
Utility” to begin the utility installation and setup process.

NSTALLATION

W

IZARD

9

EZ I

NSTALLATION WIZARD

Using IPCONFIG

1. Click the “Start” button, click “Run” and type “command.”

2. Press “OK” and a black command prompt will appear.

3. Type “ipconfig” and press enter.

4. Verify that your IP Address is 192.168.2.xxx. If so, you can
now use the SMC EZ Installation Wizard to configure your
SMC2671W. If your IP Address is completely different, please
go to the “Configuring Your IP Address” on page 25.

10

U

TILITY INSTALLATION AND

C

ONFIGURATION

Note: This Configuration Utility is for Windows 98SE, Me

2000, and XP

After clicking “Configuration Utility,” follow the on-screen
instructions to install the utility program.

11

U

TILITY INSTALLATION AND CONFIGURATION

Using the Configuration Utility

1. Click Start/Programs/SMC2671W/SMC2671W Configuration
Utility.

2. The program will automatically scan for the SMC2671W
access points on the network. If you want to subsequently
detect all access points on the network, click the Scan button.
From the list of detected SMC2671Ws, double-click on the IP
Address of the unit you wish to configure. A dialogue box will
prompt you for the login password.

3. Enter the default password: smcadmin.

12

Utility Configuration

System

The first screen displays System information.

U

TILITY CONFIGURATION

Menu Description

Device Information

Description The model number of the unit
Mac Address The MAC address of the SMC2671W
Regulatory

Domain
Serial Number The product serial number of the SMC2671W

Countries have different regulations regarding the use of radio
frequencies. Select the correct domain for your location.

13

U

TILITY INSTALLATION AND CONFIGURATION

Menu Description

Administrator
Password

Load Default The Load Default button will let you reload the factory default

Reset The Reset button will let you reboot the SMC2671W.
Refresh/Apply Once a configuration change has been made on a screen, be

Sets the password for administrator access.
(Default: smcadmin)

settings.

sure to click the Refresh or Apply button at the bottom of the
screen to enable the new setting.

14

U

TILITY CONFIGURATION

IP Config

Click on the IP Config tab to display and set up the IP settings of
the SMC2671W.

Menu Description

Mac address The MAC address of the SMC2671W
IP address Set the IP address for SMC2671W as required.

Subnet mask Set the Subnet Mask as required. (Default: 255.255.255.0)
Gateway Set the default gateway as required. (Default: 192.168.2.1)
DHCP Client You can enable the DHCP Client function to automatically get

Primary Port The Fast Ethernet port (RJ-45)

(Default: 192.168.2.25)

an IP Address, Subnet Mask, and Default Gateway from a
DHCP server in your network. (Default: Disabled)

15

U

TILITY INSTALLATION AND CONFIGURATION

Statistic

The Statistic tab displays transmit and receive statistics for
Ethernet and wireless connections.

16

U

Wireless Operation

The Wireless Operation allow you to set up the wireless
configurations.

TILITY CONFIGURATION

Menu Description

Wireless Settings

WLAN Interface WLAN interface allows you to set up a wireless LAN

SSID Broadcast Broadcast the SSID on the wireless network for easy

Channel ID Set the operating radio channel. (Default: 6)

ESSID Extended SSID. All wireless clients and the wireles access

communication environment. (Default: Enable)

connection with client PCs. (Default: Disable)

Note: Available channel settings are limited by local

regulations which determine which channels are
available.

points within a specific ESS must be configured with the same
SSID. (Default: SMC)

17

U

TILITY INSTALLATION AND CONFIGURATION

Menu Description

Device Name The name of the wireless access point. (Default: SMC2671W)
Basic Rates The highest rate specified is the rate the Wireless Barricade

Data Rates Set the data rate transmitted from the SMC2671W. The lower

Preamble Type The access points and client card drivers have a radio setting

Beacon Interval The beacon signals allow the wireless devices to maintain

RTS Threshold You may configure the access point to initiate an RTS frame.

Frag. Threshold The Frag. Threshold can be set between 256 and 2,346. If the

Operation Mode

Mode This may be set to Access Point, Range Extender, or Ethernet

BSSID Basic Service Set ID. The MAC address of the access point to

will use when transmitting broadcast/multicast and
management frames. Available options are: 1, 2, 5.5, and
11 Mbps. (Default: 2 Mbps.)

the data rate, the longer the transmission distance. Available
options are: 1, 2, 5.5, and 11 Mbps. (Default: 11)

for RF Preamble. If you are not sure whether all the clients and
access point radios in your wireless network support the Short
RF preamble, then leave this setting to the default (Long).

contact with each other. They may also carry
power-management information. (Default: 100)

If the packet size is smaller than the preset RTS threshold size,
the RTS/CTS mechanism will NOT be enabled. (Default: 2,347
which means Disabled)

packet size is smaller than the preset Fragment size, the
packet will not be segmented. (Default: 2,346 which means
Disabled)

Adapter. (Default: Access Point)

which the adapter is connected in an infrastructure network. In
an ad hoc network, the BSS ID is a random number generated
by the first adapter that communicates with other clients in the
network. The BSS ID of the other clients will then be set to the
same value.

18

U

TILITY CONFIGURATION

Menu Description

MAC Filtering You can decide which wireless devices are allowed to connect

to the SMC2671W by adding the MAC address of allowed
clients. Wireless devices that are not in the table will be denied
access.

• Choose Enable MAC Filtering to enable the MAC Filter.
(Default: Disabled)

• Key in the MAC address of the Ethernet device which is
allowed to associate with the SMC2671W, and click Add.

Note: The format of the MAC address is 12 hexadecimal

digits, i.e., A~F & 0~9.

• Select the MAC address from the MAC Address List, and
click on the Delete button for removing the client association
with the SMC2671W.

Note: This table will be blank if the SMC2671W is set the

Ethernet Adapter mode since the Ethernet Adapter has
no clients but is itself the client of an associated access
point.

19

U

TILITY INSTALLATION AND CONFIGURATION

Security

The Security screen provides you a versatile encryption method
to prevent unauthorized access to your wireless network and
provide more secure data transmissions.

20

U

TILITY CONFIGURATION

Menu Description

Type

Encryption Enabled/Disable WEP (Wired Equivalent Privacy) encryption.

(Default: None)

WEP All clients and a wireless access point in the wireless network

WEP (mode) The SMC2671W supports shared key encryption with key

Active (key) Choose a key from the generated keys.

Passphrase For automatic 64-bit security, enter a passphrase. Four keys

must have the same WEP setting.

lengths of the standard 64-bit and industry standard 128-bit.

will be generated (as shown below). Automatic 128-bit security
generates a single passphrase.

You may automatically generate encryption keys or manually
enter the keys. The bit key must be in hexadecimal numerals.
(0~9, A~F, e.g., D7 0A 9C 7F E5.)

64-Bit Manual Entry
Key 1~4 - Each Key ID contains 10 HEX digits.

128-Bit Manual Entry

Key ID contains 26 HEX digits.

21

U

TILITY INSTALLATION AND CONFIGURATION

22

U

TILITY CONFIGURATION

23

U

TILITY INSTALLATION AND CONFIGURATION

About

The About tab displays the product name, the software version
number of the SMC2671W Configuration management tool, and
SMC copyright information.

Note: Clicking the SMC logo on the screen takes you to the SMC

web site (www.smc.com

) for the latest firmware download.

24

C

ONFIGURING

Windows 98/Me

Note: Some Windows 9x/Me systems will request that you insert

your Windows CD in order to complete the following
configuration. Please have this CD ready.

1. Click the “Start” button and choose “Settings,” then click
“Control Panel.”

Y

OUR

A

DDRESS

IP

2. Double-click the “Network” icon.

25

C

ONFIGURING YOUR

3. Select the TCP/IP that is bound to the network adapter that
you are currently using to configure your SMC2671W. Click
“Properties.”

IP A

DDRESS

26

W

INDOWS

4. Select the Specify an IP option and insert 192.168.2.x (where
x is

2 ~ 24, 26 ~ 254).

subnet mask.

Then insert 255.255.255.0 for the

98/M

E

5. Press OK and reboot the machine when prompted to do so.

27

C

ONFIGURING YOUR

IP A

DDRESS

Windows 2000

1. Right-click the “Network Places” icon on your desktop and
click “Properties.”

2. Right-click your Local Area Connection and click “Properties.”

28

W

INDOWS

3. Click “Internet Protocol TCP/IP” and click “Properties.” Select
the “Use the following IP Address” option and insert

192.168.2.x (where x is
enter a gateway and DNS, you can enter 192.168.2.1.

2 ~ 24, 26 ~ 254)

. If requested to

2000

4. Click “OK” and click “Close” to continue and save the
changes.

29

C

ONFIGURING YOUR

IP A

DDRESS

Windows XP

1. Right-click the “Network Places” icon on your desktop and
click “Properties.”

2. Right-click your “Local Area Connection” and click
“Properties.”

30

W

INDOWS

3. Click “Internet Protocol TCP/IP” and click “Properties.”

XP

31

C

ONFIGURING YOUR

4. Select the “Use the following IP Address” option and insert

192.168.2.x (where x is
requested to enter a gateway and DNS, you can type in

192.168.2.1.

IP A

DDRESS

2 ~ 24, 26 ~ 254)

for the IP address. If

5. Click “OK” and click “Close” to continue and save the
changes.

32

W

EB

M

ANAGEMENT

Browser Configuration

Confirm your browser is configured for a direct connection to the
Internet using the Ethernet cable that is installed in the computer.
This is configured through the options/preference section of your
browser.

Disable Proxy Connection

You will also need to verify that the HTTP Proxy feature of your
web browser is disabled. This is so that your web browser will be
able to view the SMC2671W configuration pages. The following
steps are for Internet Explorer. Determine which browser you use
and follow the appropriate steps.

Internet Explorer (5.5 or above) in Microsoft Windows

1. Open Internet Explorer. Click Tools, and then select Internet
Options.

2. In the Internet Options window, click the Connections tab.

3. Click the LAN Settings button.

4. Clear all the check boxes and click OK to save these LAN
settings changes.

5. Click OK again to close the Internet Options window.

Internet Explorer in Macintosh

1. Open Internet Explorer. Click Explorer/Preferences.

2. In the Internet/Explorer/Preferences window, under Network,
select Proxies.

3. Uncheck all check boxes and click OK.

33

WEB M

ANAGEMENT

To access the SMC2671W’s
management interface, enter the
Wireless Ethernet Adapter IP
address in your web browser
http://192.168.2.25 Then enter the
password and click LOGIN.
(Default: smcadmin)

The home page displays the Setup options.

Navigating the Web Browser Interface

The SMC2671W’s web management interface features a
user-friendly setup interface. This configuration UI supports
advanced functions like password setting , LAN IP setting,
wireless security configuration, MAC address filtering, firmware
upgrade, and other advanced functions.

Making Configuration Changes

Configurable parameters have a dialog box or a drop-down list.
Once a configuration change has been made on a page, be sure
to click the APPLY or REFRESH button at the bottom of the page
to enable the new setting.

Note: To ensure proper screen refresh after a command entry,

ensure that Internet Explorer 5.5 is configured as follows:
Under the menu Tools/Internet Options/General/
Temporary Internet Files/Settings, the setting for “Check
for newer versions of stored pages” should be “Every visit
to the page.”

34

N

AVIGATING THE WEB BROWSER INTERFACE

Use the web management interface to define system parameters,
manage and control the Wireless Ethernet Adapter and its ports,
or monitor network conditions. The following table outlines the
selections available from this program.

Menu Description

System Sets the password for administrator access
LAN Sets the TCP/IP configuration of the Wireless Ethernet

Wireless Configures the wireless channel, SSID, and encryption for

MAC Filter Configures control access to your network clients based on the

Tools Contains options to backup & restore the current configuration,

Status Displays the number of attached clients, the firmware versions,

Adapter’s LAN interface and all DHCP clients

wireless communications

MAC (Media Access Control) Address of the client machine

restore all configuration settings to the factory defaults, update
system firmware, or reset the system

Displays WAN and Ethernet traffic statistics

the physical MAC address for each media interface, the
hardware version and serial number, system IP settings, as well
as DHCP and firewall information

35

WEB M

ANAGEMENT

System

Password Settings

Use this menu to restrict access based on a password. (Default:
smcadmin) For security reason, you should change the default
password before exposing the SMC2671W to the Internet.

Passwords can contain from 3–12 alphanumeric characters and
are not case-sensitive.

Enter a maximum Idle Time Out (in minutes) to define a
maximum period of time for which the login session is maintained
during inactivity. If the connection is inactive for longer than the
maximum idle time, it will perform system logout, and you have to
login to the web management system again.

(Default: 10 minutes)

36

N

AVIGATING THE WEB BROWSER INTERFACE

LAN

With Obtain an IP Address Automaticly [DHCP] enabled, the IP
address, subnet mask and default gateway can be dynamically
assigned to the SMC2671W by the network DHCP server.

Note: If there is no DHCP server on your network, then the

SMC2671W will automatically start up with its default IP
address, 192.168.2.25.

The SMC2671W does not support a DHCP server. It basically
allows clients to pass through to the DHCP server to obtain an IP
Address. If you have a server on your network that requires a
static IP address, you may still use the DHCP Server and
manually assign a static IP address to your server.

If your Internet Service Provider has assigned a fixed IP address,
select Configure a Static IP Address. Enter the assigned address
and subnet mask for the SMC2671W. Then enter the gateway
address of your ISP.

37

WEB M

ANAGEMENT

You may need a fixed address if you want to provide Internet
services, such as a web server or FTP server.

Wireless

To configure the SMC2671W as an Ethernet Adapter, all you
need to do is define the radio channel, the Service Set Identifier
(SSID), and encryption options.

In Ethernet Adapter mode or Range Extender mode, the radio
channel and SSID (Service Set ID) of the SMC2671W must be
set to the same values as those of the access point they are
associated with.

If the SMC2671W is in Access Point mode, you must specify a
common radio channel and SSID (Service Set ID) to be used by
the Wireless Ethernet Adapter and all of your wireless clients. Be
sure you configure all of your clients to the same values.

38

N

AVIGATING THE WEB BROWSER INTERFACE

Wireless Channel: The radio channel through which a wireless
access point communicates with PCs in its BSS. (Default: 6)

Note: The available channel settings are limited by local

regulations which determine the number of channels that
are available.

• U.S.: 1 ~ 11 channels

• Europe: 1 ~ 13 channels

• Japan: Channel 14

SSID: The Service Set ID. This should be set to the same value
as other wireless devices in your network. (Default: ANY)

Note: The SSID is case-sensitive and can consist of up to 32

alphanumeric characters.

Broadcast SSID: In Access Point Mode or Range Extender Mode,
the SMC2671W can be enabled to broadcast the SSID on the
wireless network for easy connection with client PCs.
(Default: Enable)

WEP Encryption

If you are transmitting sensitive data across
wireless channels, you should enable Wired
Equivalent Privacy (WEP) encryption.

Encryption requires you to use the same set of encryption/
decryption keys for a wireless access point and all of its wireless
clients. The SMC2671W supports shared key encryption with key
lengths of the standard 64-bit and industry standard 128-bit. The
bit key must be in hexadecimal numerals.
(0~9, A~F, e.g., D7 0A 9C 7F E5.)

39

WEB M

ANAGEMENT

64-Bit Manual Entry

Key 1~4 - Each Key ID contains 10 HEX digits.

128-Bit Manual Entry

Key ID contains 26 HEX digits.

You may automatically generate encryption keys or manually
enter the keys. For automatic 64-bit security, enter a passphrase.
Four keys will be generated (as shown above). Choose a key
from the four generated keys. Automatic 128-bit security
generates a single passphrase.

Note that Wired Equivalent Privacy (WEP) protects data
transmitted between wireless nodes, but does not protect any
transmissions over your wired network or over the Internet.

40

N

AVIGATING THE WEB BROWSER INTERFACE

Client List

The Client List screen displays the MAC address and network
speed of the accociated clients.

41

WEB M

ANAGEMENT

Advanced Settings

Operation Mode: This may be set to Access Point,
Range Extender or Ethernet Adapter.
(Default: Ethernet Adapter)

Note: After you choose the operation mode for the SMC2671W,

be sure to click the APPLY button, and OK to the
confirmation message to enable the new setting.

These modes are described below:

• Access Point – functions as a standard IEEE 802.11b access
point

• Range Extender – repeats another SMC2671W that is
configured in Access Point mode

• Ethernet Adapter – provides a wireless connection to devices
such as Microsoft Xbox and Ethernet ready embedded
devices

42

N

AVIGATING THE WEB BROWSER INTERFACE

The parameters that follow may be configured in any of the three
modes descibed above but the user is advised to leave them at
their default settings.

Transmission Rate: Set the data rate transmitted from
the Wireless Ethernet Adapter. The lower the data
rate, the longer the transmission distance.
(Default: Auto)

RTS Threshold: Set the RTS (Request to Send) frame length. You
may configure the access point to initiate an RTS frame. If the
packet size is smaller than the preset RTS threshold size, the
RTS/CTS mechanism will NOT be enabled.

The access point sends Request to Send (RTS) frames to a
particular receiving station to negotiate the sending of a data
frame. After receiving an RTS, the station sends a CTS (Clear to
Send) frame to acknowledge the right of the sending station to
send data frames. The access points contending for the medium
may not be aware of each other. The RTS/CTS mechanism can
solve this “Hidden Node Problem.” (Default: 2347)

Fragmentation Threshold: The Fragmentation Threshold can be
set between 256 and 2,346. If the packet size is smaller than the
preset Fragment size, the packet will not be segmented.

Fragmentation of the PDUs (Package Data Unit) can increase the
reliability of transmissions because it increases the probability of
a successful transmission due to smaller frame size. If there is
significant interference present, or collisions due to high network
utilization, try setting the fragment size to send smaller fragments.
This will enable the retransmission of smaller frames much faster.
However, it is more efficient to set the fragment size larger if very
little or no interference is present because it requires overhead to
send multiple frames. (Default: 2346)

43

WEB M

ANAGEMENT

Basic Rate: The highest rate specified is the rate the

Wireless Ethernet Adapter will use when
transmitting broadcast/multicast and management
frames. (Default: 1, 2 Mbps.)

Preamble Type: The access points and client card drivers have a
radio setting for RF Preamble. Enabling it can boost your
throughput. Preamble Type offers a drop-down list with two
options: Long or Short. If you are not sure whether all the clients
and access point radios in your wireless network support the
Short RF preamble, then leave this setting to the default (Long).

Transmit Power: Set the signal strength transmitted from
the access point. The longer the transmission distance,
the higher the transmission power required.
(Default: Super)

Selections - Low, Medium, Normal, High and Super

44

N

AVIGATING THE WEB BROWSER INTERFACE

Site Survey

In Ethernet Adapter mode, the Site Survey scans and shows all
IEEE 802.11b wireless devices within the adapter’s signal range.
You can choose one of them to connect to by clicking on an
(B)SSID entry.

BSSID: Basic Service Set ID. The MAC address of the access
point to which the adapter is connected in an infrastructure
network. In an ad hoc network, the BSS ID is a random number
generated by the first adapter that communicates with other
clients in the network. The BSS ID of the other clients will then be
set to the same value.

Channel: The radio channel on which the access point operates.

45

WEB M

ANAGEMENT

WEP: WEP security protects your wireless LAN against

eavesdropping and unauthorized access by intruders. If WEP is
in use, all clients on the same network must use the same WEP
key settings in order to communicate with each other.

SSID: The Service Set ID of the scanned access points.

MAC Filter

The MAC Filtering feature of the SMC2671W allows you to
control access to your network clients based on the MAC (Media
Access Control) Address of the client machine. This ID is unique
to each network adapter. If the MAC address is listed in the table,
that client machine will have the access to your network.

46

N

AVIGATING THE WEB BROWSER INTERFACE

Tools

Use the Tools menu to backup the current configuration, restore a
previously saved configuration, restore factory settings, update
firmware, and reset the SMC2671W.

Configuration Tools

• Backup Settings – Saves the SMC2671W’s configuration to a

file.

• Restore Settings – Restores settings from a saved backup
configuration file.

• Restore to Factory Defaults – Restores the SMC2671W
settings back to the original factory default.

47

WEB M

ANAGEMENT

Firmware Upgrade

Use this screen to update the firmware or user interface to the
latest versions. Download the upgrade file from the web site and
save it to your hard drive. Click Browse to look for the previously
downloaded file. Click APPLY.

Check the Status page Information section to confirm that the
upgrade process was successful.

48

WEB M

Reset

Click APPLY to reset the SMC2671W. Your settings will not be
changed. The reset will be complete when the power LED is lit
red.

ANAGEMENT

49

WEB M

ANAGEMENT

Statistics

The Statistics page displays transmit and receive statistics for all
associated stations.

50

WEB M

Status

The Status screen displays WAN/LAN connection status,
firmware, and hardware version numbers of the SMC2671W.

ANAGEMENT

51

N

ETWORK

The Wireless Solution supports a stand-alone wireless network
configuration, as well as an integrated configuration with 10 Mbps
Ethernet LANs. For a list of the maximum distances between the
AP/Bridge and wireless clients, refer to page 57.

The wireless network cards and adapters can be configured as:

• Ad hoc – for small departmental or SOHO LANs

• Infrastructure – for enterprise LANs

C

ONFIGURATION

P

AND

LANNING

Network Topologies

Ad Hoc Wireless LAN

An ad hoc wireless LAN
consists of a group of
computers, each equipped
with a wireless adapter or
SMC2671W Ethernet
Adapter, connected via
radio signals as an
independent wireless
LAN. Computers in a
specific ad hoc wireless LAN must be configured to the same
radio channel.

An ad hoc wireless LAN can be used for a small branch office or
SOHO operation.

52

N

ETWORK TOPOLOGIES

Infrastructure Wireless LAN

An integrated wired and wireless LAN is called an Infrastructure
configuration. A Basic Service Set (BSS) consists of a group of
wireless PC users, and an access point that is directly connected
to the wired LAN. Each wireless PC in this BSS can talk to any
computer in its wireless group via a radio link, or access other
computers or network resources in the wired LAN infrastructure
via the access point.

The infrastructure configuration permits wireless clients to access
the wired LAN and also increases the effective wireless
transmission range for wireless clients as their signal can be
passed through multiple access points.

A wireless infrastructure can be used for access to a central
database, or for connection between mobile workers, as shown in
the following figure.

53

N

ETWORK CONFIGURATION AND PLANNING

Infrastructure Wireless LAN for Roaming Wireless PCs

The Basic Service Set (BSS) is the communications domain for
each wireless access point. For wireless PCs that do not need to
support roaming, set the domain identifier (SSID) of the wireless
card to the SS ID of the access point to which you want to
connect. Check with your administrator for the SS ID of the
access point to which he wants you to connect.

A wireless infrastructure can also support roaming for mobile
workers. More than one access point can be configured to create
an Extended Service Set (ESS). By placing the Access Points so
that a continuous coverage area is created, wireless users within
this ESS can roam freely. All wireless network cards, adapters,
and the wireles access point within a specific ESS must be
configured with the same SSID.

Note: If Access Point 2 is replaces by an SMC2671W set to

Range Extender mode then the SMC2671W will not
establish its own BSS, but will repeat data messeges
between Acess Point 1 and end users, thus extending the
coverage area of Access Point 1.

54

N

ETWORK TOPOLOGIES

A Wireless LAN with Internet Access

In this application one SMC2671W is in Ethernet Adapter mode
connected to a Microsoft Xbox. Another SMC2671W is acting in
Access Point mode. This provides a wireless network and also
Intrnernet access for applications including Internet game
playing.

55

T

ROUBLESHOOTING

Check the following items before you contact technical support.

1. If mobile users do not have roaming access to the
SMC2671W:

Make sure that all the SMC2671Ws and stations in the ESS
in which the WLAN mobile users can roam are configured to
the same WEP setting, SSID, and authentication algorithm.

2. If the management utility cannot connect to the SMC:

Check that your local IP address settings conform to the
SMC2671W settings.

3. If you forgot your password or your SMC2671W has locked
up, you can reset it to factory defaults by performing the
following steps:

• Use a pin to push in the RELOAD button for 5 seconds.
This button was located on the bottom of the SMC2671W.

• The SMC2671W will begin to load the default settings.

56

• The SMC2671W will restart with the factory default
settings.

SMC N

ETWORKS

802.11B W

IRELESS PRODUCT MAXIMUM DISTANCE

SMC Networks 802.11b Wireless Product

Maximum Distance Table

Important Notice

Maximum distances posted below are actual tested distance
thresholds. However, there are many variables such as barrier
composition and construction, as well as local environmental
interference that may impact your actual distances and cause you
to experience distance thresholds far lower than those posted
below. If you have any questions or comments regarding the
features or performance of this product, or if you would like
information regarding our full line of wireless products, visit us at
www.smc.com, or call us toll-free at 800.SMC.4YOU. SMC
Networks stands behind every product sold with a 30-day
satisfaction guarantee and a limited-lifetime warranty.

SMC2602W 802.11b Wireless PCI Card Maximum Distance Table

Speed and Distance Ranges

Environmental Condition 11 Mbps 5.5 Mbps 2 Mbps 1 Mbps

Outdoors: A line-of-sight

environment with no
interference or obstruction
between the Access Point and
users.

Indoors: A typical office or
home environment with floor to
ceiling obstructions between the
Access Point and users.

160 m
(528ft)

72 m

(236 ft)

195 m

(640 ft)

73 m

(240 ft)

255 m

(837 ft)

73 m

(240 ft)

350 m

(1155 ft)

75 m

(246 ft)

57

S

PECIFICATIONS

Standards

Ethernet: IEEE 802.3x 10BASE-T/100BASE-TX (RJ-45)
Radio: IEEE 802.11b

Operating Channels

IEEE 802.11b compliant

USA & Canada: 11 channels,
Europe (ETSI): 13 channels,
Japan: 14 channels

Data Rate

1, 2, 5.5, 11 Mbps

Operating Frequency

USA, Canada, and Europe (ETSI): 2400-2483.5 MHz
Japan: 2400-2497 MHz

Modulation Type

CCK, BPSK, and QPSK

Radio Technology

Direct Sequence Spread Spectrum

Power Supply

Input: 100-240 AC, 50-60 Hz
Output: 5 VDC, 1A

Power Consumption

5 V, 700 mA maximum

Receive Sensitivity

Minimum -87 dBm for 1 Mbps
Minimum -85 dBm for 2 Mbps
Minimum -83 dBm for 5.5 Mbps
Minimum -80 dBm for 11 Mbps

Output Power

> +18dBm minimum

Physical Size

14.30 x 12.20 x 3.03 cm (5.63 x 4.80 x 1.19 in)

Weight

150 g (5.3 oz)

58

LED Indicators

Power, Ethernet Link/Activity,
Wireless Activity (TX/RX)

Antenna

Two 2.0 dBi omni-directional dipole antenna

Network Management

Windows 98SE/Me/2000/XP SNMP Management Utility

Operating System Compatibility

Windows 98SE/Me/2000/XP

Supported Protocol

TCP/IP, IPX

Encryption

64-bit/128-bit WEP
Passphrase key generation

Temperature

Operating: 0 to 50 °C (32 to 122 °F)
Storage: 0 to 70 °C (32 to 158 °F)

Humidity

5% to 85% (non-condensing)

Compliances

CE Mark
EN55022 Class B
EN55024
IEC 61000-42/3/4/6/11

Emissions

FCC Part 15 Class B
ETSI 300.328
Te le c
ARIB STD33 and T66

S

PECIFICATIONS

59

T

ERMINOLOGY

The following is a list of terminology that is used in this document.

Access Point – An internetworking device that seamlessly
connects wired and wireless networks.

Ad Hoc – An ad hoc wireless LAN is a group of computers each
with LAN adapters, connected as an independent wireless LAN.

Backbone – The core infrastructure of a network. The portion of
the network that transports information from one central location
to another central location where it is unloaded onto a local
system.

Base Station – In mobile telecommunications, a base station is
the central radio transmitter/receiver that maintains
communications with the mobile radio telephone sets within its
range. In cellular and personal communications applications,
each cell or micro-cell has its own base station; each base station
in turn is interconnected with other cells’ bases.

BSS – BSS stands for “Basic Service Set.” It is an Access Point
and all the LAN PCs that are associated with it.

CSMA/CA – Carrier Sense Multiple Access with Collision
Avoidance.

ESS – ESS (ESS-ID, SSID) stands for “Extended Service Set.”
More than one BSS is configured to become an Extended
Service Set. LAN mobile users can roam between different BSSs
in an ESS (ESS-ID, SSID).

60

T

ERMINOLOGY

Ethernet – A popular local area data communications network,
which accepts transmission from computers and terminals.
Ethernet operates on a 10 Mbps baseband transmission rate,
using a shielded coaxial cable or shielded twisted pair telephone
wire.

Infrastructure – An integrated wireless and wired LAN is called
an Infrastructure configuration.

Fragmentation Threshold – In the 802.11 Standard, the MAC
Layer may fragment and reassemble directed MSDUs or
MMPDUs. The fragmentation and defragmentation mechanisms
allow for fragment re-transmission.

Preamble Type – Some access points and client card drivers
have a radio setting for “Short” RF Preamble. If all the clients and
access points in your wireless network have this feature, then
enabling it can boost your throughput. However, if a radio does
not support this feature, then it will not be able to communicate
with any other radios that have this set to “Short.”

Roaming – A wireless LAN mobile user moves around an ESS
and maintains a continuous connection to the Infrastructure
network.

RTS Threshold – Transmitters contending for the medium may
not be aware of each other. RTS/CTS mechanism can solve this
“Hidden Node Problem.” If the packet size is smaller than the
preset RTS Threshold size, the RTS/CTS mechanism will NOT be
enabled.

WEP – “Wired Equivalent Privacy” is based on the use of 64-bit or
128-bit keys and the popular RC4 encryption algorithm. Wireless
devices without a valid WEP key will be excluded from network
traffic.

61

T

ERMINOLOGY

62

FOR TECHNICAL SUPPORT, CALL:

From U.S.A. and Canada (24 hours a day, 7 days a week)

(800) SMC-4-YOU; Phn: [phone]; Fax: [phone]

From Europe : Contact details can be found on

www.smc-europe.com or www.smc.com

INTERNET

E-mail addresses:

[e-mail]
[e-mail]

Driver updates:

http://www.smc.com/index.cfm?action=tech_support_drivers_downloads

World Wide Web:

http://www.smc.com
http://www.smc-europe.com

FOR LITERATURE OR ADVERTISING RESPONSE, CALL:

U.S.A. and Canada: (800) SMC-4-YOU; Fax [phone]
Spain: 34-91-352-00-40; Fax [phone]
UK: 44 (0) 1932 866553; Fax [phone]
France: 33 (0) 41 38 32 32; Fax [phone]
Italy: 39 (0) 335 5708602; Fax [phone]
Benelux: 31 33 455 72 88; Fax [phone]
Central Europe: 49 (0) 89 92861-0; Fax [phone]
Nordic: 46 (0) 868 70700; Fax [phone]
Eastern Europe: 34 -93-477-4920; Fax [phone]
Sub Saharian Africa: 216-712-36616; Fax [phone]
North West Africa: 34 93 477 4920; Fax [phone]
CIS: 7 (095) 7893573; Fax [phone]
PRC: 86-10-6235-4958; Fax [phone]
Taiwan: 886-2-8797-8006; Fax [phone]
Asia Pacific: (65) 238 6556; Fax [phone]
Korea: 82-2-553-0860; Fax [phone]
Japan: 81-45-224-2332 ; Fax [phone]
Australia: 61-2-8875-7887; Fax [phone]
India: 91-22-8204437 ; Fax [phone]

If you are looking for further contact information, please visit www.smc.com,
www.smc-europe.com, or www.smc-asia.com.

38 Tesla
Irvine, CA 92618
Phone: [phone]

Model Number: SMC2671W
Revision Number E102003-R01 F 1.0
Part Number: 150000030200E