ASUSTeK Computer WL300G Wireless LAN Access Point User Manual WL 300g UserMan

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®
SpaceLink™ 802.11g Access Point
WL-300g
(For 802.11g and 802.11b Wireless Clients)
User’s Manual
Copyright Information
No part of this manual, including the products and software described in it,
may be reproduced, transmitted, transcribed, stored in a retrieval system,
or translated into any language in any form or by any means, except
documentation kept by the purchaser for backup purposes, without the
express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS,
EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
(INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF
BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS
AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT
OR ERROR IN THIS MANUAL OR PRODUCT.
Product warranty or service will not be extended if: (1) the product is
repaired, modified or altered, unless such repair, modification of alteration
is authorized in writing by ASUS; or (2) the serial number of the product is
defaced or missing.
Products and corporate names appearing in this manual may or may not be
registered trademarks or copyrights of their respective companies, and are
used only for identification or explanation and to the owners’ benefit, without
intent to infringe.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS
MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND
ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND
SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS
ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS
OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL,
INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Copyright © 2003 ASUSTeK COMPUTER INC. All Rights Reserved.
Product Name:
Manual Revision:
Release Date:
SpaceLink 802.11g Access Point (WL-300g)
1 E1289
April 2003
ASUS SpaceLink 802.11g Access Point
Copyright Information
ASUSTeK COMPUTER INC. (Asia-Pacific)
Address:
General Tel:
General Fax:
General Email:
150 Li-Te Road, Peitou, Taipei, Taiwan 112
+886-2-2894-3447
+886-2-2894-3449
info@asus.com.tw
Technical Support
MB/Others (Tel): +886-2-2890-7121 (English)
Notebook (Tel): +886-2-2890-7122 (English)
Desktop/Server: +886-2-2890-7123 (English)
Support Fax:
+886-2-2890-7698
Support Email: tsd@asus.com.tw
Web Site:
www.asus.com.tw
ASUS COMPUTER INTERNATIONAL (America)
Address:
44370 Nobel Drive, Fremont, CA 94538, USA
General Fax:
+1-510-608-4555
General Email: tmd1@asus.com
Technical Support
Support Fax:
+1-510-608-4555
General Support: +1-510-739-3777
Web Site:
www.asus.com
Support Email: tsd@asus.com
ASUS COMPUTER GmbH (Germany & Austria)
Address:
Harkortstr. 25, 40880 Ratingen, BRD, Germany
General Fax:
+49-2102-442066
General Email: sales@asuscom.de (for marketing requests only)
Technical Support
Support Hotline: MB/Others: +49-2102-9599-0
Notebook (Tel): +49-2102-9599-10
Support Fax:
+49-2102-9599-11
Support (Email): www.asuscom.de/de/support (for online support)
Web Site:
www.asuscom.de
ASUS SpaceLink 802.11g Access Point
Table of Contents
1. Introduction ............................................................................. 7
Overview ................................................................................................ 7
The SpaceLink™ Family ................................................................... 8
System Requirements ..................................................................... 10
The Product Package ..................................................................... 10
Features .......................................................................................... 11
Wireless Operation .............................................................................. 12
Roaming Between SpaceLink™ Gateways or APs ......................... 13
Roaming Guidelines (SpaceLink™ Gateways or APs) ................... 14
SpaceLink™ Home Gateway Topology .......................................... 15
LED Indicators ..................................................................................... 18
2. Hardware Installation ............................................................ 19
Installation Procedure .......................................................................... 19
Wired and Wireless Connections ........................................................ 21
Configuring the SpaceLink 802.11g AP ............................................... 23
Installing the Homegateway Utilities ............................................... 25
Homegateway Utilities ......................................................................... 26
Connecting to the SpaceLink Web Manager ....................................... 26
Home Gateway Discovery ................................................................... 27
User Name and Password .............................................................. 29
Home Page ..................................................................................... 29
Quick Setup ......................................................................................... 30
Wireless ............................................................................................... 31
IP Config .............................................................................................. 35
NAT Setting ......................................................................................... 37
Internet Firewall ................................................................................... 38
Wireless Firewall ................................................................................. 39
System Setup ...................................................................................... 40
Status & Log ........................................................................................ 41
Firmware Restoration .......................................................................... 42
Using a Hub .................................................................................... 42
Printer Setup Wizard ........................................................................... 43
Add Printer Wizard .......................................................................... 43
Printer Setup Wizard ....................................................................... 45
Verifying Your Printer ...................................................................... 46
ASUS SpaceLink 802.11g Access Point
Table of Contents
4. Wireless Performance ........................................................... 47
Site Topography ................................................................................... 47
Site Surveys ........................................................................................ 47
Range .................................................................................................. 48
5. Troubleshooting ..................................................................... 49
Common Problems and Solutions ....................................................... 49
Reset to Defaults ................................................................................. 50
6. Appendix ................................................................................. 53
Operating frequency range .................................................................. 53
Number of operating channels ............................................................ 53
DSSS PHY frequency channel plan .................................................... 53
Specifications ...................................................................................... 54
IEEE 802.11b (11Mbits/sec) ............................................................ 61
Direct-Sequence Spread Spectrum (for 802.11b) ........................... 62
IEEE 802.11a (54Mbits/sec) ........................................................... 63
COFDM (for 802.11a) ..................................................................... 64
Federal Communications Commission Statement .......................... 65
Canadian Department of Communications ..................................... 66
Regulatory Information / Disclaimers .............................................. 66
Safety Information ........................................................................... 66
MPE Statement ............................................................................... 67
Caution Statement of the FCC Radio Frequency Exposure ........... 67
RF Exposure ................................................................................... 67
ASUS SpaceLink 802.11g Access Point
6
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
1. Introduction
1. Introduction
Overview
Thank you for purchasing the ASUS SpaceLink 802.11g Access Point. The
ASUS SpaceLink 802.11g Access Point is designed to be fully compliant
with IEEE 802.11g wireless local area networks (WLAN). 802.11g is an
extension to 802.11b, used in majority of wireless LANs today. 802.11g
will broaden 802.11b's data rates to 54 Mbps within the 2.4 GHz band
using OFDM (orthogonal frequency division multiplexing) technology.
802.11g allows backward compatibility with 802.11b devices but only at
11 Mbps or lower depending on the range and presence of obstructions.
Wireless LANs are complementary extensions to existing wired LANs, offering
complete mobility while maintaining continuous network connectivity to both
corporate and home Intranets. They add a new level of convenience for LAN
users. PC users stay connected to the network anywhere throughout a building
without being bound by a LAN wires. This is accomplished through the use of
SpaceLink Access Points. SpaceLink Access Points with built-in Internet
gateway capability, allows your family to share a broadband Modem and one
ISP account simultaneously from different rooms without wires! ASUS
SpaceLink products can keep you connected anywhere, any time.
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
1. Introduction
The SpaceLink™ Family
The SpaceLink™ Wireless PCI Card is a member of a product family that
provides a complete wireless networking solution.
The SpaceLink™ Home Gateway
(WL-500) creates a wireless network
using the IEEE 802.11b wireless
standard and allows sharing a single
Internet connection.
LNK
AIR
The SpaceLink™
Access Point (WL300) creates a wireless
network using the
IEEE
802.11b
wireless standard.
The SpaceLink™
PC Card (WL-100)
is a IEEE 802.11b
wireless
LAN
adapter that fits into
a PCMCIA Type II
slot in a Notebook
PC.
The
SpaceLink™
Cardbus Card (WL200) is a dual band (IEEE
802.11a/b) wireless LAN
adapter that fits into a
Notebook
PC’s
PCMCIA Type II slot
with Cardbus support.
The SpaceLink™
CF Card (WL-110)
is a IEEE 802.11b
wireless
LAN
adapter that fits into
a Compact Flash
Type II slot in a
Portable Digital
Assistant (PDA).
The SpaceLink™
PCI Card (WL-230)
is a dual band (IEEE
802.11a/b) wireless
PCI card that supports
IEEE
802.11a,
802.11b,
and
Bluetooth.
The above illustrations are not to scale.
ASUS SpaceLink 802.11g Access Point
1. Introduction
Chapter 1 - Introduction
The SpaceLink™ Dual-Band
Home Gateway (WL-600) creates
a wireless network using the IEEE
802.11b and 802.11a wireless
standards and allows sharing a single
Internet connection.
The USB SpaceLink™ Client
(WL-140) is an IEEE 802.11b
wireless USB LAN adapter that
connects to any computer’s USB
port with the benefit of being able
to place the antenna anywhere in
order to maximize signal strength.
The
SpaceLink
802.11g Access Point
(WL-300g) creates a
wireless network
using the IEEE
802.11g and 802.11b
wireless standards.
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
1. Introduction
System Requirements
To begin using the SpaceLink Access Point, you must have the following
minimum requirements:
•
•
•
An Ethernet (10Base-T or 10/100Base-TX) adapter for wired client
At least one 802.11g (54Mbps) or one 802.11b (11Mbps) wireless
adapter for wireless mobile clients
TCP/IP and an Internet browser installed
Note: The SpaceLink™ Access Point only supports 10Base-T, therefore it cannot be connected to pure 100Base-TX networks. The network must be either 10-Base or 10/100Base-TX.
The Product Package
Each SpaceLink™ Access Point comes with:
•
•
•
•
•
•
•
•
•
10
One SpaceLink™ 802.11g Access Point
One SpaceLink™ 802.11g Access Point Quick Start Guide
One SpaceLink™ 802.11g Access Point User’s Manual
One power adapter (5 Volts DC, 1 Amp)
One support CD (utilities and documentation)
One RJ-45 Ethernet cable (straight-through)
One Bracket for ceiling mounting
One Bracket for office partition mounting
One Sticker for wall mounting alignment
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
1. Introduction
Wireless Operation
The SpaceLink 802.11g Access Point supports three modes of operation:
•
Access Point: The SpaceLink 802.11g Access Point operates as a standalone device to provide network access to wireless mobile clients.
• Access Point Client: The SpaceLink 802.11g Access Point partners
with another SpaceLink 802.11g Access Point to provide network access
to wireless mobile clients.
• Wireless Bridge: The SpaceLink 802.11g Access Point communicates
only with other SpaceLink Access Points that are set to Wireless Bridge
Mode. (SpaceLink Access Points set to Wireless Bridge mode cannot
support wireless mobile clients.)
By default, the SpaceLink 802.11g Access Point operates in Access Point
mode.
Access Point Mode
In “Access Point” mode, the SpaceLink 802.11g Access Point will operate
as a MAC layer learning bridge and forward packets between wireless
mobile clients and the Ethernet network.
A wireless LAN that uses the SpaceLink 802.11g Access Point in “Access
Point” mode generally consists of one or more 802.11b Access Points and
one or more wireless mobile clients that have an 802.11b adapter installed.
The SpaceLink 802.11g Access Point maintains a table of MAC addresses,
which it has learned are located either on the Ethernet network or on the
radio network by monitoring the source address of packets it receives. For
example, if the SpaceLink 802.11g Access Point receives a packet over its
radio, it creates an entry in its table for the node that sent the packet and
labels the entry as a member of the radio network. The SpaceLink 802.11g
Access Point removes an entry from the table after five minutes of inactivity.
When the SpaceLink 802.11g Access Point receives a packet from the
Ethernet network, it compares the packet’s destination address with the
node addresses listed in its table. If the packet’s destination address is not
in the table, the SpaceLink 802.11g Access Point will forward the packet to
the wireless mobile clients. If the packet’s destination address is listed in
the table as a member of the radio network, the SpaceLink 802.11g Access
Point will forward the packet to the wireless mobile clients. If the packet’s
destination address is listed in the table as a member of the Ethernet network,
the
SpaceLink
ASUS SpaceLink 802.11g Access Point
11
Chapter 1 - Introduction
1. Introduction
Access Point will not forward the packet to the wireless mobile clients.
The SpaceLink 802.11g Access Point applies the same principles to
determine if a packet received over its radio should be forwarded to the
Ethernet network.
The SpaceLink 802.11g Access Point forwards all broadcast packets to
wireless mobile clients. Given this, the SpaceLink 802.11g Access Point
can only support a limited amount of network traffic. It is recommended
that you only use the SpaceLink 802.11g Access Point on networks that
contain less than 512 nodes.
The number of wireless mobile clients that can be supported by the
SpaceLink 802.11g Access Point depends on the amount of information
that each client exchanges with the network. Therefore, the number of clients
that can be supported by one SpaceLink 802.11g Access Point will vary
based on the applications in use and how frequently network information
is accessed.
Roaming Between SpaceLink Access Points
If there are multiple SpaceLink Access Points on the network, then a wireless
mobile client may seamlessly roam from one SpaceLink 802.11g Access
Point to another.
Each SpaceLink 802.11g Access Point creates its own wireless cell or
coverage area. This is also known as a Basic Service Set (BSS). Any wireless
mobile client can communicate with a particular SpaceLink 802.11g Access
Point if it is within the SpaceLink Access Point’s coverage area.
If the cells of multiple SpaceLink Access Points overlap, then the wireless
mobile client may switch from one SpaceLink 802.11g Access Point to
another as it travels throughout the facility. During the hand-off from one
SpaceLink 802.11g Access Point to another, the wireless mobile client
maintains an uninterrupted connection to the network. This is known as
“roaming.”
Multiple SpaceLink Access Points connected to a common Ethernet network
form an Extended Service Set (ESS). All members of an Extended Service
Set are configured with an ID, known as the SSID or ESSID. Wireless
mobile clients must be configured with the same SSID as the SpaceLink
Access Points on the network; a client can only roam between SpaceLink
Access Points that share the same SSID.
12
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
•
•
•
•
•
•
•
1. Introduction
Roaming Guidelines
An 802.11b PC Card can only roam between 802.11b Access Points.
All SpaceLink Access Points must have the same SSID.
All computers with SpaceLinkPC card or CF card adapters must have
the same SSID as the Access Points that they will roam between.
If WEP encryption is enabled, then all SpaceLink Access Points and
client adapters must use the same encryption level and WEP Key(s) to
communicate.
The SpaceLink Access Points’ cells must overlap to ensure that there
are no gaps in coverage and to ensure that the roaming client will always
have a connection available.
SpaceLink Access Points that use the same Channel should be installed
as far away from each other as possible to reduce potential interference.
It is strongly recommended that you perform a site survey using the
utility provided with the SpaceLinkPC card or CF card to determine the
best location for each SpaceLink 802.11g Access Point in the facility.
ASUS SpaceLink 802.11g Access Point
13
Chapter 1 - Introduction
1. Introduction
SpaceLink 802.11g Access Point LED
Indicators
There are three LEDs on the front of the SpaceLink Access Point, as shown
here.
Power (Amber)
Air (Green)
Link (Green)
Power LED
The Power LED is the top LED and turns amber when the power adapter is
connected and the power switch is turned ON.
Air LED
The Air LED is the middle LED and turns green when the wireless function
is working.
Link LED
The Link LED is the bottom LED and turns green when the Access Point
has a physical connection to the Ethernet network.
Power Requirements
The SpaceLink 802.11g Access Point requires power from an external power
supply. The SpaceLink 802.11g Access Point ships with a UL listed, Class
2 power supply (5V, 1A).
14
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
1. Introduction
2. Installation
This chapter describes the installation procedure for the SpaceLink 802.11g
Access Point and includes a description of the LEDs found on the unit.
Installation Procedure
Follow these steps to install the SpaceLink Access Point.
1. Determine the best location for the SpaceLink Access Point. Keep in
mind the following considerations:
• The length of the Ethernet cable that connects the Access Point to
the network must not exceed 100 meters.
• For standard placement, try to place the Access Point on a flat, sturdy
surface as far from the ground as possible, such as on top of a desk
or bookcase, keeping clear of metal obstructions and away from
direct sunlight.
• Try to centrally locate the Access Point or its antennas so that it will
provide coverage to all of the wireless mobile devices in the area.
•
Use only the power supply that came with this unit. Other power
supplies may fit but the voltage and power may not be compatible.
It is the responsibility of the installer and users of the SpaceLink
802.11g Access Point to guarantee that the antenna is operated at
least 20 centimeters from any person. This is necessary to insure
that the product is operated in accordance with the RF Guidelines
for Human Exposure which have been adopted by the Federal Communications Commission.
2. Place the Access Point in the desired location. Wall mounting is also
possible for the Access Point. Refer to the section entitled “Wall
Mounting Option” on the next page for details.
3. Attach one end of an RJ-45 Ethernet cable to the Access Point and
attach the other end to the RJ-45 10Base-T port of a network hub, switch,
router, or patch panel (possibly on a wall).
The SpaceLink 802.11g Access Point does not support 100BaseTX; it only supports 10Base-T. Hubs or switches that supports both
10Base-T and 100Base-TX may be used.
ASUS SpaceLink 802.11g Access Point
15
Chapter 1 - Introduction
1. Introduction
4. Attach one end of the AC power adapter, included in the product package,
to the back of the SpaceLink 802.11g Access Point and the other end to
a power outlet.
Note: Use the Access Point only with the power adapter supplied in
the product package. Using another power supply may damage the
Access Point.
The Power LED on the front of the Access Point will light up when the unit
is powered ON. In addition, the green Link LED will turn ON to indicate
that the Access Point has a physical Ethernet network connection.
Wall Mounting Option
Out of the box, the SpaceLink 802.11g Access Point is designed to sit on a
raised flat surface like a file cabinet or book shelf. The unit may also be
converted for mounting to a wall or ceiling.
Follow these steps to mount the Access Point to a wall:
1.
2.
3.
4.
5.
6.
Remove the base by pressing the tab and sliding the base.
Remove the side cover to expose the mounting hooks.
Locate the screws provided with the Access Point.
Mark two holes in a flat surface using the provided hole template.
Tighten the two provided screws until only 1/4” is showing.
Latch the Access Point onto the two screws.
Note: Readjust the screws if you cannot latch the Access Point onto
the screws or if it is too loose.
16
ASUS SpaceLink 802.11g Access Point
Chapter 1 - Introduction
Before:
1. Introduction
Step 1
After:
Step 2
Before:
After:
Note: Mounting brackets are provided for you to hang the SpaceLink
802.11g Access Point on an office partition or office ceiling.
ASUS SpaceLink 802.11g Access Point
17
Chapter 2 - Installation
Configuring the SpaceLink 802.11g AP
The home gateway can be configured to meet various usage scenarios.
Some of the factory default settings may suit your usage; however, others
may need changing. Prior to using the home gateway, you must check the
basic settings to guarantee it will work in your environment.
2. Installation
Configuring the SpaceLink 802.11g Access Pointis done through a web
browser. You need a Notebook PC or desktop PC connected to the SpaceLink
802.11g Access Pointand running a web browser as a configuration terminal.
The connection can be wired or wireless. For the wireless connection, you
need an IEEE 802.11b compatible device, e.g. ASUS SpaceLink PC Card,
installed in your Notebook PC. You should also disable WEP and set the
SSID to “default” for your wireless LAN device.
If you want to configure the SpaceLink 802.11g Access Pointor want to
access the Internet through the SpaceLink Dual-Band Home Gateway, TCP/
IP settings must be correct. Normally, the TCP/IP setting should be on the
IP subnet of the SpaceLink Dual-Band Home Gateway. The SpaceLink
802.11g Access Pointincorporates a DHCP server so the easiest method is
to set your PC to get its IP address automatically and reboot your computer.
So the correct IP address, gateway, DNS (Domain Name System Server)
can be obtained from the SpaceLink Dual-Band Home Gateway.
Note: Before rebooting your PC, the SpaceLink 802.11g Access
Pointshould be switched ON and in ready state.
18
ASUS SpaceLink 802.11g Access Point
Chapter 2 - Installation
Advanced IP Settings
If you want to set your IP address manually, the following default settings
of the SpaceLink 802.11g Access Pointshould be known:
•
•
•
•
2. Installation
• IP address 192.168.123.1
• Subnet Mask 255.255.255.0.
If you set your computer’s IP manually, it needs to be on the same segment.
For example:
IP address 192.168.123.xxx (xxx can be any number between 2 and
254 that is not used by another device)
Subnet Mask 255.255.255.0 (same as the SpaceLink 802.11g Access
Point)
Gateway 192.168.123.1 (this is the SpaceLink 802.11g Access PointIP address)
DNS 192.168.123.1 (SpaceLink 802.11g Access PointIP address or your
own).
ASUS SpaceLink 802.11g Access Point
19
Chapter 2 - Installation
Installing the Homegateway Utilities
Follow these steps to install the SpaceLink Dual-Band Home Gateway
Manager in Microsoft Windows:
2. Installation
(1) Insert the support CD. Double-click (2) Click Next after reading the welcome
setup.exe if your autorun has been
screen.
disabled. Click Install...Utilities.
(3) Click Yes after reading the license (4) Click Next to accept the default
agreement.
destination folder or click Browse to
specify another path.
(5) Click Next to accept the default (6) Click Finish when setup is complete.
program folder or enter another name.
20
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Homegateway Utilities
3. Utilities
After installation, you can launch the utilities through the Start menu.
Connecting to the SpaceLink Web Manager
Wired Ethernet Connection
Besides using a network hub, you can also connect a LAN cable from your
computer’s network card to the Home Gateway using either a straight or
crossover cable because the SpaceLink 802.11g Access PointLAN and
WLAN RJ-45 ports have auto-crossover capability.
Wireless Connection
If you are using a Notebook PC with a wireless adapter, you can connect to
the SpaceLink Homegateway Web Manager without a wired Ethernet
connection.
ASUS SpaceLink 802.11g Access Point
21
Chapter 3 - Home Gateway Utilities
Home Gateway Discovery
Run the ASUS Homegateway Discovery from the Start menu and click
Config on the device.
3. Utilities
Manually Entering the Address
You can also open your PC’s web browser and enter the IP address of the
ASUS SpaceLink 802.11g AP: http://192.168.1.1
22
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Home Gateway Discovery (Cont.)
Web access through the WLAN port (over the Internet) is disabled by default
so that the above private IP can be used for configuration access. If Internet
access through the WLAN port is enabled by the user, port 8080 must be
used for configuration access. In this case, you would enter the following:
http://(WAN Port IP Address):8080 in your web browser.
3. Utilities
If your computer’s IP is not on the
same subnet as the SpaceLink DualBand Home Gateway, you will be
asked to change it. The IP address can
be any number from 2 to 254 that is
not used by another device.
Restart your Windows if you are
asked to.
If you cannot find any the
SpaceLink 802.11g APs due to
a problem in the IP settings,
push and hold the “Restore”
button on the SpaceLink
802.11g AP over five seconds to
restore factory default settings.
ASUS SpaceLink 802.11g Access Point
Restore
23
Chapter 3 - Home Gateway Utilities
Home Gateway Discovery (Cont.)
User Name and Password
Once connected, a window will ask
for the User name and Password in
order to log in. The factory default
values are “admin” and “admin”.
3. Utilities
Home Page
After logging in, you will see the ASUS 802.11g AP home page.
24
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Quick Setup
3. Utilities
Click Next to enter the Quick Setup page. Follow the
instructions to setup the ASUS SpaceLink Dual-Band Home
Gateway.
ASUS SpaceLink 802.11g Access Point
25
Chapter 3 - Home Gateway Utilities
Wireless
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
3. Utilities
26
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
SSID & Channel
The SSID is an identification string of up to 32 ASCII characters that
differentiate one SpaceLink Home Gateway or Access Point from another.
The SSID is also referred to as the “ESSID” or “Extended Service Set ID.”
You can use the default SSID and radio channel unless more than one SpaceLink
Home Gateway or Access Point is deployed in the same area. In that case, you
should use a different SSID and radio channel for each SpaceLink Home
Gateway or Access Point. All the SpaceLink Home Gateways and SpaceLink
802.11b client adapters must have the same SSID to allow a wireless mobile
client to roam between the SpaceLink Home Gateways. By default, the
SSID is set to “default”.
3. Utilities
Channel
IEEE 802.11b devices are direct sequence spread spectrum devices that
spread a radio signal over a range of frequencies. The range of frequencies
used by a direct sequence device is called a Channel.
The IEEE 802.11b specification supports up to 14 overlapping Channels
for radio communication. But only 11 Channels are supported in the United
States and therefore on the SpaceLink Home Gateway. To minimize
interference, configure each the SpaceLink Home Gateway to use Nonoverlapping channels. Non-overlapping channels have 25Mhz separation
beginning at the first allowed channel for the country (for the US and most
of Europe, channels 1, 6 & 11 are used).
Make sure that the SpaceLink Home Gateways sharing the same Channel
(or Channels close in number) are as far away from each other as possible,
based on the results of your site survey of the facility. You can find the site
survey utility in the SpaceLink PC card or CF card setup CD.
Rate
Select “1, 2, 5.5 & 11Mbps” to maximize performance. Use “1 & 2 Mbps”
only when backward compatibility is needed for some older wireless LAN
cards with a maximum bit rate of 2Mbps.
The IEEE 802.11b specification supports four data rates: 11 Mbps, 5.5 Mbps,
2 Mbps, and 1 Mbps. As a wireless mobile client travels further and further
away from the SpaceLink Home Gateway, the data rate automatically decreases
in order to maintain a usable radio connection. Therefore, a client that is close
to an the SpaceLink Home Gateway may operate at 11 Mbps, but a client that
is far away from the SpaceLink Home Gateway may operate at 2 Mbps.
ASUS SpaceLink 802.11g Access Point
27
Chapter 3 - Home Gateway Utilities
Authentication Method
It is suggested to select “Shared Key Only”. If “Open System Only” or
“Shared Key and Open System” is used, the home gateway may accept
connection requests from unauthorized wireless clients.
WEP
The IEEE 802.11b standard specifies an optional encryption feature, known
as Wired Equivalent Privacy or WEP, that is designed to provide a wireless
LAN with a security level equal to what is found on a wired Ethernet network.
WEP encrypts the data portion of each packet exchanged on the 802.11b
network using either a 64-bit or 128-bit encryption algorithm. In addition,
WEP is also used in conjunction with the optional Shared Key
Authentication algorithm to prevent unauthorized devices from associating
with an 802.11b network.
3. Utilities
Enabling WEP can protect your data from eavesdroppers. If you do not
need this feature, select “no” to skip the following setting. The SpaceLink
Home Gateway supports both 64-bit and 128-bit encryption using the Wired
Equivalent Privacy (WEP) algorithm. Select the type of encryption you
want to use (64 or 128 bit) and configure one to four WEP Keys. The “128bit” method is more secure than the “64-bit”.
64/128bits versus 40/104bits
You may be confused about configuring WEP encryption, especially when
using multiple wireless LAN products from different vendors. There are
two levels of WEP Encryption: 64 bits and 128 bits.
Firstly, 64 bit WEP and 40 bit WEP are the same encryption method and
can interoperate in the wireless network. This lower level of WEP encryption
uses a 40 bit (10 Hex character) as a “secret key” (set by user), and a 24 bit
“Initialization Vector” (not under user control). This together makes 64
bits (40 + 24). Some vendors refer to this level of WEP as 40 bits and
others refer to this as 64 bits. ASUS SpaceLink products use the term 64
bits when referring to this lower level of encryption.
Secondly, 104 bit WEP and 128 bit WEP are the same encryption method
and can interoperate in the wireless network. This higher level of WEP
encryption uses a 104 bit (26 Hex character) as a “secret key” (set by user),
and a 24 bit “Initialization Vector” (not under user control). This together
28
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
makes 128 bits (104 + 24). Some vendors refer to this level of WEP as 104
bits and others refer to this as 128 bits. ASUS SpaceLink products use the
term 128 bits when referring to this higher level of encryption.
Phrase
Automatically generate four WEP keys. A WEP key is either 10 or 26
hexadecimal digits (0~9, a~f, and A~F) based on whether you select 64 bit
or 128 bit in the WEP pull-down menu. Type a combination of up to 64
letters, numbers, or symbols in the Magic Word column, then the SpaceLink
Home Gateway Manager uses an algorithm to generate four WEP keys for
encryption. If you want to type in the keys manually, leave this field blank.
The SpaceLink family of products all use the same algorithm to generate
the keys so that they can all use the same WEP key.
3. Utilities
Note: This function eases users from having to remember their
passwords and is compatible to ASUS SpaceLink family of products. But this is not as secure as manual assignment.
WEP Key
At most four keys can be set. A WEP key is either 10 or 26 hexadecimal
digits (0~9, a~f, and A~F) based on whether you select 64 bit or 128 bit in
the WEP pull-down menu. The home gateway and ALL of its wireless clients
MUST have at least the same default key.
Default Key
The Default Key field lets you specify which of the four encryption keys
you use to transmit data on your wireless LAN. As long as the SpaceLink
Home Gateway or wireless mobile client with which you are communicating
has the same key in the same position, you can use any of the keys as the
default key. If the home gateway and ALL of its wireless clients use the
same four WEP keys, select “key rotation” to maximize security. Otherwise,
choose one key in common as the default key.
ASUS SpaceLink 802.11g Access Point
29
Chapter 3 - Home Gateway Utilities
IP Config
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
3. Utilities
Static IP Address
IP Address - Normally, this is Dynamic (because fixed IP accounts cost
more) and should be set to Automatic IP. Do not use “Static IP” if your
ISP’s documentation does not mention an IP Address. If your ISP provided
an IP Address with instructions to use it, select Static IP from “IP Addressing
Method” and enter the address into the provided field.
WAN DNS Settings
DNS Server - Normally this is automatic and you would answer “NO” to
the question about manually assigning DNS. If you are given instructions
from your ISP to enter DNS addresses, select “YES” to manually assigning
DNS and enter the IP addresses here. You can set the DNS server anytime
using any connection type (Static IP, PPPoE, or Automatic IP).
30
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
PPPoE Account
User Name - The name of your Internet account provided by your ISP.
Some ISPs work with the entire account name along with the hosting domain
(such as yourname@yourdomain.com) and others require that you enter
only the account name (yourname). See the example above.
Password - Enter the password for your Internet account.
3. Utilities
Click the “Finish” button to save your new settings and restart the
SpaceLink Home Gateway or click “Save” and restart later.
ASUS SpaceLink 802.11g Access Point
31
Chapter 3 - Home Gateway Utilities
NAT Setting
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
3. Utilities
32
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Internet Firewall
3. Utilities
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
ASUS SpaceLink 802.11g Access Point
33
Chapter 3 - Home Gateway Utilities
Wireless Firewall
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
3. Utilities
34
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
System Setup
3. Utilities
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
System Setup - Change Password
This page will allow you to change the default password “admin” (lower
case) to any password of you choice. You can enter any usable characters
between 1-16 characters long (cannot be left blank). Click Save button to
save your new password. If you forget the SpaceLink Home Gateway’s
password, you can reset the SpaceLink Home Gateway to its factory settings
(see troubleshooting).
Note: The password is case sensitive.
ASUS SpaceLink 802.11g Access Point
35
Chapter 3 - Home Gateway Utilities
Status & Log
Click this item on the menu to reveal a sub menu. Follow
the instructions to setup the ASUS SpaceLink Dual-Band
Home Gateway. Tips are given when you move your cursor
over each item.
The Status page gives you all the necessary information
for monitoring the SpaceLink Home Gateway’s condition.
3. Utilities
36
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Firmware Restoration
This utility will automatically search out failed SpaceLink 802.11g APs
and upload a firmware that you specify. The process takes about 3 to 4
minutes and during this process the PWR, AIR, and WLAN LEDs will
remain lit while the LAN LED will flash slowly.
3. Utilities
The Firmware Restoration utility is an emergency rescue tool to restore a
SpaceLink 802.11g AP which has failed during a previous firmware upload.
A failed firmware upgrade will cause the SpaceLink 802.11g AP to enter a
failure mode, waiting for the user to use the Firmware Restoration utility to
find and upload a new firmware. This is not a firmware upgrade utility and
cannot be used on a working SpaceLink 802.11g AP. Normal firmware
upgrades must be done through the web manager.
Using a Hub
If you have problems upload a firmware while using a network hub, try
connecting your computer directly to the LAN port. Either 10Base-T or
100Base-TX connections will work.
ASUS SpaceLink 802.11g Access Point
37
Chapter 3 - Home Gateway Utilities
Printer Setup Wizard
This utility helps you setup your computers to utilize the printer server
function of the SpaceLink Dual-Band Home Gateway.
Add Printer Wizard
You should add your printer to your computer to simplify the SpaceLink 802.11g
Access PointPrinter Setup Wizard. If you run the “Printer Setup Wizard” without
your printer driver installed, it will direct you to the “Add Printer Wizard”.
3. Utilities
(1) Run the “Add Printer Wizard” from Start (2) Choose “Install by the Add Printer
| Printers and Faxes | Add Printer.
Wizard”.
(3) Choose “Local printer attached to this (4) Choose “Remote Port (Printer Sharing
computer”.
Port)”. If this is not available, select LPT1.
38
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
Printer Setup Wizard (Cont.)
(7) You can print a test page.
3. Utilities
(5) Find your manufacturer and model. (6) Click Next to set this as your default
Click Have Disk if you cannot find it in
printer.
the list and use the driver provided with
your printer.
(8) Click Finish to close the wizard.
Your printer will show in the “Printers and
Faxes” window and the check mark shows
that it is set as your default printer.
ASUS SpaceLink 802.11g Access Point
39
Chapter 3 - Home Gateway Utilities
Printer Setup Wizard
The wizard will explore all available SpaceLink Dual-Band Home Gateways
and model information of the printers attached to them in your local network.
3. Utilities
(1) If you already have your printer installed
on your printer port (LPT1), it will make
this setup process much easier. See
next page for instructions. Run the
Printer Setup Wizard from the Windows
Start menu.
(2) If the printer is found, the name of the
printer will be shown on this screen.
Note: If there is an
error communicating
with the printer, you
will get this message.
Make sure that the printer is ON, ready, and
connected. Click Back and Next.
(3) This setup wizard will change your
default printer to use “Remote Port”
which is serviced by the SpaceLink
Dual-Band Home Gateway.
(4) Click Done when setup is complete.
40
ASUS SpaceLink 802.11g Access Point
Chapter 3 - Home Gateway Utilities
After setting up the printer, a printer icon
will appear in Windows’ “Printers and
Faxes”. Right click the printer icon and
choose Properties to configure the printer.
3. Utilities
Verifying Your Printer
If your printer was previously setup, the
SpaceLink 802.11g Access Pointprinter
setup wizard will change your printing port
from your local LPT1 (parallel) port to
“Remote Port”. If necessary, you can
change this back at anytime or use
Windows “Add Printer” to setup another
printer on whatever port you require.
When properly setup, the SpaceLink
802.11g Access Pointwill show the printer
name in the “Homegateway Discovery”
utility and show “on-line” under the “Printer
Server” on the “Status” page of the web
manager.
ASUS SpaceLink 802.11g Access Point
41
Chapter 4 - Wireless Performance
4. Wireless Performance
This section provides the user with ideas for how to improve the performance
of a SpaceLink 802.11b network.
Site Topography
For optimal performance, locate wireless mobile clients and the SpaceLink
802.11g APs away from transformers, heavy-duty motors, fluorescent lights,
microwave ovens, refrigerators, and other industrial equipment. Signal loss
can occur when metal, concrete, walls or floors block transmission. Locate
the SpaceLink 802.11g APs in open areas or add the SpaceLink 802.11g
APs as needed to improve coverage.
Microwave ovens operate in the same frequency band as the SpaceLink
802.11g AP. Therefore, if you use a microwave within range of the
SpaceLink 802.11g AP you may notice network performance degradation.
However, both your microwave and your the SpaceLink 802.11g AP will
continue to function.
Site Surveys
4. Performance
A site survey (utility provided with the SpaceLink PC card and CF card)
analyzes the installation environment and provides users with
recommendations for equipment and its placement. The optimum placement
of 11 Mbps Home Gateways differs for 1 or 2 Mbps Home Gateways,
because the locations and number of Home Gateways required are different.
42
ASUS SpaceLink 802.11g Access Point
Chapter 4 - Wireless Performance
Range
Every environment is unique with different obstacles, barriers, materials,
etc. and, therefore, it is difficult to determine the exact range that will be
achieved without testing. However, has developed some guidelines to
estimate the range that users will see when the product is installed in their
facility, but there are no hard and fast specifications.
Radio signals may reflect off of some obstacles or be absorbed by others
depending on their construction. For example, with two 802.11b radios,
you may achieve up to 1000' in open space outdoors where two devices
have a line of sight, meaning they see each other with no obstacles. However,
the same two units may only achieve up to 300' of range when used indoors.
The IEEE 802.11b specification supports four data rates: 11 Mbps, 5.5 Mbps,
2 Mbps, and 1 Mbps. Operation at 1 Mbps provides greater range than
operation at 11 Mbps. The SpaceLink 802.11g Access Pointwill
automatically adjust the data rate to maintain a usable radio connection.
ASUS SpaceLink 802.11g Access Point
4. Performance
Therefore, a client that is close to the SpaceLink 802.11g Access Pointmay
operate at 11 Mbps while a client that is on the fringe of coverage may
operate at 1 Mbps. As mentioned earlier, you can configure the data rates
that the SpaceLink 802.11g Access Pointwill use. Note that if you limit the
range of data rates available to the SpaceLink Dual-Band Home Gateway,
you may reduce the effective wireless range of the SpaceLink 802.11b
products.
43
Chapter 5 -Troubleshooting
Location of antenna connector
Slide the right side cover back to reveal the antenna connector.
5. Troubleshooting
Note: Optional antenna kits are not currently available. Check with
your local dealer for availability.
44
ASUS SpaceLink 802.11g Access Point
Chapter 5 -Troubleshooting
5. Troubleshooting
The SpaceLink Access Point is designed to be very easy to install and operate.
However, if you experience difficulties, use the information in this chapter
to help diagnose and solve problems. If you cannot resolve a problem, contact
Technical Support, as listed on the front of this manual.
Common Problems and Solutions
Problem
AP does not power up:
Solution
• Check for faulty SpaceLink Access Point power supply by measuring
the output voltage with an electrical test meter.
• Check failed AC supply (power outlet)
Problem
Cannot communicate with the SpaceLink Access Point through a wired
network connection.
10/100 Mbps Hub
Hub LED
ON
Access Point (Link) LED
ON
5. Troubleshooting
Solution
• Verify network configuration by ensuring that there are no duplicate IP
addresses. Power down the device in question and ping the assigned IP
address of the device. Ensure no other device responds to that address.
• Check that the cables used have proper pin outs and connectors or use
another LAN cable.
• Check that the hub, switch, or computer that the SpaceLink Access Point
is connected to supports 10Mbps speed.
This is what you will see if you connect the SpaceLink Access Point to a:
Pure 100 Mbps Hub
OFF
ON
So you will not know if the connection is bad from the SpaceLink Access
Point Link LED alone, you will have to look at the Hub LED if you are not
sure what kind of hub the SpaceLink Access Point is attached to.
ASUS SpaceLink 802.11g Access Point
45
Chapter 5 -Troubleshooting
Problem
The SpaceLink Access Point Manager still cannot find or connect
to the SpaceLink Access Point after verifying the IP address and
LAN cable, changes cannot be made, or password is lost.
Solution
In case the SpaceLink Access Point is inaccessible, you can
restore the SpaceLink Access Point’s factory default settings.
Use a straightened paper clip to press the button located in
the hole labeled “Reset” on the back of the SpaceLink Access
Point and keep it depressed over 5 seconds. The amber power
LED will darken and then light up when reset is successful.
Reset to Defaults
The following are factory default values. These values will be present when you
first receive your SpaceLink Access Point, if you push the reset button on the
back of the SpaceLink Access Point over 5 seconds, or if you click the “Reset to
Defaults” on the “General” page of the SpaceLink Access Point Manager.
5. Troubleshooting
Name
Password
IP address assignment
Primary port
IP address
Subnet mask
Gateway
SSID
Channel
WEP type
AP name
Operational mode
Only allow IP packets
Authorization table
Host AP / Wireless Bridge MAC Add.
Fragmentation threshold
RTS threshold
Preamble mode
Authentication type
46
Default Value
“asus”
obtain an IP address automatically
Ethernet
192.168.39.130
255.255.255.0
0.0.0.0
“default”
WEP disable
“ASUS AP”
AP mode
Disable
Disable
00-00-00-00-00-00
2346
2346
Long preamble
Both
ASUS SpaceLink 802.11g Access Point
Chapter 5 -Troubleshooting
Problem
My 802.11b PC Card will not associate with the SpaceLink Access Point.
Solution
Follow these steps:
1. Try to bring the devices closer together; the PC Card may be out of
range of the SpaceLink Access Point.
2. Confirm that the SpaceLink Access Point and PC Card have the same
SSID.
3. Confirm that the SpaceLink Access Point and PC Card have the same
Encryption settings, if enabled.
4. Confirm that the SpaceLink Access Point’s Air and Link LEDs are solid
green.
5. Confirm that the authorization table includes the MAC address of the
SpaceLink PC card if “Authorization Table” is enabled.
6. Confirm that the operational mode is “Access Point” mode.
7. Confirm that the SpaceLink Access Point and SpaceLink PC card have
the same preamble mode.
Problem
The throughput seems slow.
•
•
•
•
5. Troubleshooting
Solution
To achieve maximum throughput, verify that your antennas are well-placed,
not behind metal, and do not have too many obstacles between them. If
you move the client closer to the SpaceLink Access Point and throughput
increases, you may want to consider adding a second SpaceLink Access
Point and implementing roaming.
Check antenna, connectors and cabling.
Verify network traffic does not exceed 37% of bandwidth.
Check to see that the wired network does not exceed 10 broadcast
messages per second.
Verify wired network topology and configuration.
ASUS SpaceLink 802.11g Access Point
47
Chapter 5 -Troubleshooting
Problem
I cannot find SpaceLink Access Points using the SpaceLink Access Point Manager.
Solution
To configure the SpaceLink Access Point through a wireless LAN card,
your computer must be in the same subnet of the SpaceLink Access Point.
You cannot find SpaceLink Access Points with subnet different from your
computer within the same gateway. You must change your computer to the
same subnet as the SpaceLink Access Point. The factory default subnet of
the SpaceLink Access Point is "192.168.39.0".
If you put the SpaceLink Access Point on different subnets, but physically
connected inside the same gateway, the following symptoms will occur:
For example, if your computer’s TCP/IP settings are:
IP address: 192.168.1.1, Subnet mask: 255.255.255.0
AP TCP/IP Settings
Ethernet Network
Wireless LAN
IP address
192.168.2.130
192.168.2.130
192.168.2.130
Subnet mask
255.255.255.0
255.255.255.0
255.255.255.0
Gateway
Success of Search AP
0.0.0.0
Not 0.0.0.0
Any value
Yes, then you can No, you should
No, you should
change the AP to
“reset to defaults”, 1. “reset to defaults”
match your subnet then search again. 2. change your PC’s IP
address to 192.168.39.X
then search again
5. Troubleshooting
In Windows NT/2000/XP, you must login with Administrator privileges so that all functions of the SpaceLink Access Point Manager
can function correctly. If you do not login as a member of the Administrator group, you cannot run Access Point Manager.
Problem
How do I upgrade the firmware on the SpaceLink Access Point?
Solution
Periodically, a new Flash Code is available for SpaceLink Access Points
on the Web site at http://www.asus.com. Ideally, you should update an
Access Point’s Flash Code using the “ASUS AP Live Update” utility
installed along with the “ASUS AP Manager”. See the next section for
instructions on using “ASUS AP Live Update”.
48
ASUS SpaceLink 802.11g Access Point
Appendix
6. Appendix
Operating frequency range
The DSSS PHY shall operate in the frequency range of 2.4 GHz to 2.4835
GHz as allocated by regulatory bodies in the USA and Europe or in the 2.471
GHz to 2.497 GHz frequency band as allocated by regulatory authority in Japan.
Number of operating channels
The channel center frequencies and CH ID numbers shall be as shown below.
The FCC (US), IC (Canada), and ETSI (Europe) specify operation from 2.4
GHz to 2.4835 GHz. For Japan, operation is specified as 2.471 GHz to 2.497
GHz. France allows operation from 2.4465 GHz to 2.4835 GHz, and Spain
allows operation from 2.445 GHz to 2.475 GHz. For each supported regulatory
domain, all channels marked with “Yes” shall be supported.
In a multiple cell network topology, overlapping and/or adjacent cells using
different channels can operate simultaneously without interference if the
distance between the center frequencies is at least 30 MHz. Channel 14
shall be designated specifically for operation in Japan.
DSSS PHY frequency channel plan
CH ID Frequency
10
11
12
13
14
2412 MHz
2417 MHz
2422 MHz
2427 MHz
2432 MHz
2437 MHz
2442 MHz
2447 MHz
2452 MHz
2457 MHz
2462 MHz
2467 MHz
2472 MHz
2484 MHz
X’10'
FCC
X’20'
IC
X’30'
ETSI
X’31'
Spain
X’32'
France
X’40'
MKK
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
YesYes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
ASUS SpaceLink 802.11g Access Point
Appendix
(Regulatory Domains)
49
Appendix
SpaceLink Access Point Specifications
The following technical specification is for reference purposes only. Actual
product’s performance and compliance with local telecommunications
regulations may vary from country to country. ASUS will only ship products
that are type approved in the destination country.
Ethernet Interface
RJ45 for 10BaseT with auto crossover MDI/MDI-X
Data Rate
11 Mbps with auto fallback to 5.5, 2 and 1 Mbps
Modulation
CCK (11Mbps, 5.5Mbps), DQPSK (2Mbps), DBPSK (1Mbps)
Technology
Direct Sequence Spread Spectrum
RF Output Power
14 ~ 17 dBm (at nominal temperature range)
Antenna
2 internal polarization diversity dipole antennas,
One RF connector for optional external antenna
Range
Indoor 130 ft (40 m), semi-open 330 ft (100 m),
outdoor (LOS, Light-Of-Sight) 1500 ft (457 m) at 11Mbps
The range may vary by different environment
Receiver Sensitivity Per< 8% @ length=1024 octets (at nominal temp. range)
11Mbps: -82 to -85 dBm; 5.5Mbps: -85 to -88 dBm;
2 Mbps: -88 to -91 dBm; 1 Mbps: -91 to -93 dBm
Operating Frequency
2.412 to 2.462 GHz (North America)
2.412 to 2.484 GHz (Japan)
2.412 to 2.472 GHz (Europe ETSI)
2.457 to 2.462 GHz (Spain)
2.457 to 2.472 GHz (France)
WEP
64/128-bit WEP; each includes 4 user-defined keys
Appendix
Utilities
50
AP Manager: User-friendly utility for discovering and
configuring SpaceLink Access Points with Access
Control List features
AP Live Update: Download the newest firmware from
the Internet
ASUS SpaceLink 802.11g Access Point
Appendix
Supported OS
Windows 98, 98SE, ME, NT4, 2000, XP
SNMP Support
MIB II, Proprietary Wireless MIBs
LED Indicators
Power, Wireless, Ethernet
DC Power Adapter AC Input: 100V to 240V(50 to 60HZ)
DC Output: 5V with max. 1 A current
Operating Temp.
Storage Temp.
0ºC to 55ºC
-20ºC to 70ºC
Humidity
5 to 95% (non-condensing)
Emissions
ETS 300 328 and ETS 300 826; CE Mark
FCC Part 15C, Section 15.247
Size
40 mm (L) 138 mm (W) 150 mm (H) (± 0.2)
Weight
400 g excluding power supply
Warranty
One Year Limited Warranty
Operating Modes
Access Point
Standard 802.11b based access point, provides
roaming capability between Wi-Fi compliant Access
Points
Access Point Client Act as a client station to associate with existing access
points and bridge traffic from Ethernet port to a remote
backbone network through the wireless interface
Point-to-point or point-to-multi-points to bridge individual
networks
ASUS SpaceLink 802.11g Access Point
Appendix
Wireless Bridge
51
Appendix
DNS Server Address (Domain Name System)
DNS allows Internet host computers to have a domain name and one or
more IP addresses. A DNS server keeps a database of host computers and
their respective domain names and IP addresses, so that when a user enters
a domain name into the Internet browser, the user is sent to the proper IP
address. The DNS server address used by the computers on your home
network is the location of the DNS server your ISP has assigned.
DSL Modem (Digital Subscriber Line) - A DSL modem uses your existing
phone lines to transmit data at high speeds.
Direct-Sequence Spread Spectrum
See next few pages for detailed explanation.
Encryption
This provides wireless data transmissions with a level of security.
Extended Service Set (ESS)
A set of one or more interconnected basic service set (BSSs) and integrated
local area networks (LANs) can be configured as an Extended Service Set.
ESSID (Extended Service Set Identifier)
You must have the same ESSID entered into the gateway and each of its
wireless clients. The ESSID is a unique identifier for your wireless network.
Ethernet
The most widely used LAN access method, which is defined by the IEEE
802.3 standard. Ethernet is normally a shared media LAN meaning all
devices on the network segment share total bandwidth. Ethernet networks
operate at 10Mbps using CSMA/CD to run over 10-BaseT cables.
Firewall
A firewall determines which information passes in and out of a network.
NAT can create a natural firewall by hiding a local network’s IP addresses
from the Internet. A Firewall prevents anyone outside of your network from
accessing your computer and possibly damaging or viewing your files.
Appendix
52
ASUS SpaceLink 802.11g Access Point
Appendix
Gateway
A network point that manages all the data traffic of your network, as well
as to the Internet and connects one network to another.
IEEE
The Institute of Electrical and Electronics Engineers. The IEEE sets
standards for networking, including Ethernet LANs. IEEE standards ensure
interoperability between systems of the same type.
IEEE 802.11
IEEE 802.xx is a set of specifications for LANs from the Institute of
Electrical and Electronic Engineers (IEEE). Most wired networks conform
to 802.3, the specification for CSMA/CD based Ethernet networks or 802.5,
the specification for token ring networks. 802.11 defines the standard for
wireless LANs encompassing three incompatible (non-interoperable)
technologies: Frequency Hopping Spread Spectrum (FHSS), Direct
Sequence Spread Spectrum (DSSS), and Infrared. 802.11 specifies a carrier
sense media access control and physical layer specifications for 1 and 2
Mbps wireless LANs.
IEEE 802.11a / IEEE 802.11b
See next few pages for detailed explanations.
Infrastructure
A wireless network centered about an access point. In this environment,
the access point not only provides communication with the wired network
but also mediates wireless network traffic in the immediate neighborhood.
IP (Internet Protocol)
The TCP/IP standard protocol that defines the IP datagram as the unit of
information passed across an Internet and provides the basis for
connectionless packet delivery service. IP includes the ICMP control and
error message protocol as an integral part. It provides the functional
equivalent of ISO OSI Network Services.
ASUS SpaceLink 802.11g Access Point
Appendix
IP Address
An IP address is a 32-bit number that identifies each sender or receiver of
information that is sent across the Internet. An IP address has two parts: the
identifier of a particular network on the Internet and an identifier of the
particular device (which can be a server or a workstation) within that network.
53
Appendix
ISM Bands (Industrial, Scientific, and Medicine Bands)
Radio frequency bands that the Federal Communications Commission
(FCC) authorized for wireless LANs. The ISM bands are located at 902
MHz, 2.400 GHz, and 5.7 GHz.
ISP (Internet Service Provider)
An organization that provides access to the Internet. Small ISPs provide
service via modem and ISDN while the larger ones also offer private line
hookups (T1, fractional T1, etc.).
LAN (Local Area Network)
A communications network that serves users within a defined geographical
area. The benefits include the sharing of Internet access, files and equipment
like printers and storage devices. Special network cabling (10 Base-T) is
often used to connect the PCs together.
MAC Address (Media Access Control) - A MAC address is the hardware
address of a device connected to a network.
NAT (Network Address Translation) - NAT masks a local network’s group
of IP addresses from the external network, allowing a local network of
computers to share a single ISP account. This process allows all of the
computers on your home network to use one IP address. This will enable
access to the Internet from any computer on your home network without
having to purchase more IP addresses from your ISP.
NIC (Network Interface Card)
A network adapter inserted into a computer so that the computer can be
connected to a network. It is responsible for converting data from stored in
the computer to the form transmitted or received.
Packet
A basic message unit for communication across a network. A packet usually
includes routing information, data, and sometimes error detection
information.
Appendix
54
ASUS SpaceLink 802.11g Access Point
Appendix
PCMCIA (Personal Computer Memory Card International
Association)
The Personal Computer Memory Card International Association (PCMCIA),
develops standards for PC cards, formerly known as PCMCIA cards. These
cards are available in three types, and are have about the same length and
width as credit cards. However, the different width of the cards ranges in
thickness from 3.3 mm (Type I) to 5.0 mm (Type II) to 10.5 mm (Type III).
These cards can be used for various functions, including memory storage,
landline modems and wireless modems.
PPP (Point-to-Point Protocol)
PPP is a protocol for communication between computers using a serial
interface, typically a personal computer connected by phone line to a server.
PPPoE (Point-to-Point Protocol over Ethernet)
Point-to-Point Protocol is a method of secure data transmission. PPP using
Ethernet to connect to an ISP.
Radio Frequency (RF) Terms: GHz, MHz, Hz
The international unit for measuring frequency is Hertz (Hz), equivalent to
the older unit of cycles per second. One megahertz (MHz) is one million
Hertz. One gigahertz (GHz) is one billion Hertz. The standard US electrical
power frequency is 60 Hz, the AM broadcast radio frequency band is 0.551.6 MHz, the FM broadcast radio frequency band is 88-108 MHz, and
wireless 802.11 LANs operate at 2.4 GHz.
SSID (Service Set ID)
SSID is a group name shared by every member of a wireless network. Only
client PCs with the same SSID are allowed to establish a connection.
Station
Any device containing IEEE 802.11 wireless medium access conformity.
ASUS SpaceLink 802.11g Access Point
Appendix
Subnet Mask
A subnet mask is a set of four numbers configured like an IP address. It is
used to create IP address numbers used only within a particular network.
55
Appendix
TCP (Transmission Control Protocol)
The standard transport level protocol that provides the full duplex, stream
service on which many application protocols depend. TCP allows a process
or one machine to send a stream of data to a process on another. Software
implementing TCP usually resides in the operating system and uses the IP
to transmit information across the network.
WAN (Wide Area Network)
A system of LANs, connected together. A network that connects computers
located in separate areas, (i.e., different buildings, cities, countries). The
Internet is a wide area network.
WECA (Wireless Ethernet Compatibility Alliance)
An industry group that certifies cross-vender interoperability and
compatibility of IEEE 802.11b wireless networking products and to promote
that standard for enterprise, small business, and home environments.
WLAN (Wireless Local Area Network)
This is a group of computers and other devices connected wirelessly in a
small area. A wireless network is referred to as LAN or WLAN.
Appendix
56
ASUS SpaceLink 802.11g Access Point
Appendix
IEEE 802.11b (11Mbits/sec)
In 1997, the Institute of Electrical and Electronics Engineers (IEEE) adopted
the 802.11 standard for wireless devices operating in the 2.4 GHz frequency
band. This standard includes provisions for three radio technologies: direct
sequence spread spectrum, frequency hopping spread spectrum, and
infrared. Devices that comply with the 802.11 standard operate at a data
rate of either 1 or 2 Mbps.
In 1999, the IEEE created the 802.11b standard. 802.11b is essentially
identical to the 802.11 standard except 802.11b provides for data rates of
up to 11 Mbps for direct sequence spread spectrum devices. Under 802.11b,
direct sequence devices can operate at 11 Mbps, 5.5 Mbps, 2 Mbps, or 1
Mbps. This provides interoperability with existing 802.11 direct sequence
devices that operate only at 2 Mbps.
Direct sequence spread spectrum devices spread a radio signal over a range
of frequencies. The IEEE 802.11b specification allocates the 2.4 GHz
frequency band into 14 overlapping operating Channels. Each Channel
corresponds to a different set of frequencies. See the Appendix to determine
the center frequency used by each Channel.
Appendix
If operating multiple 802.11b Wireless PCI Cards in the same vicinity, the
distance between the center frequencies must be at least 25 MHz to avoid
interference. Note that the Channels available to an 802.11b Wireless PCI
Card will vary from country to country. In the United States, the 802.11b
standard allocates 11 operating Channels for direct sequence devices. Channels
1, 6, and 11 are independent and do not overlap with each other. To avoid
interference between 802.11b Wireless PCI Cards, It is recommended that
you configure the Wireless PCI Cards using only Channels 1, 6, and 11.
ASUS SpaceLink 802.11g Access Point
57
Appendix
Direct-Sequence Spread Spectrum (for 802.11b)
Spread spectrum (broadband) uses a narrowband signal to spread the
transmission over a segment of the radio frequency band or spectrum. Directsequence is a spread spectrum technique where the transmitted signal is
spread over a particular frequency range. The Space Link Wireless PCI
Card uses Direct-Sequence Spread Spectrum (DSSS) for radio
communication.
Direct-sequence systems communicate by continuously transmitting a
redundant pattern of bits called a chipping sequence. Each bit of transmitted
data is mapped into chips by the Wireless PCI Card and rearranged into a
pseudorandom spreading code to form the chipping sequence. The chipping
sequence is combined with a transmitted data stream to produce the Wireless
PCI Card output signal.
Wireless mobile clients receiving a direct-sequence transmission use the
spreading code to map the chips within the chipping sequence back into
bits to recreate the original data transmitted by the Wireless PCI Card.
Intercepting and decoding a direct-sequence transmission requires a
predefined algorithm to associate the spreading code used by the transmitting
Wireless PCI Card to the receiving wireless mobile client.
This algorithm is established by IEEE 802.11b specifications. The bit
redundancy within the chipping sequence enables the receiving wireless
mobile client to recreate the original data pattern, even if bits in the chipping
sequence are corrupted by interference. The ratio of chips per bit is called
the spreading ratio. A high spreading ratio increases the resistance of the
signal to interference. A low spreading ratio increases the bandwidth
available to the user. The Wireless PCI Card uses a constant chip rate of
11Mchips/s for all data rates, but uses different modulation schemes to
encode more bits per chip at the higher data rates. The Wireless PCI Card
is capable of an 11 Mbps data transmission rate, but the coverage area is
less than a 1 or 2 Mbps Wireless PCI Card since coverage area decreases as
bandwidth increases.
Appendix
58
ASUS SpaceLink 802.11g Access Point
Appendix
IEEE 802.11a (54Mbits/sec)
The 802.11b standard was designed to operate in the 2.4-GHz ISM
(Industrial, Scientific and Medical) band using direct-sequence spreadspectrum technology. The 802.11a standard, on the other hand, was designed
to operate in the more recently allocated 5-GHz UNII (Unlicensed National
Information Infrastructure) band. And unlike 802.11b, the 802.11a standard
departs from the traditional spread-spectrum technology, instead using a
frequency division multiplexing scheme that's intended to be friendlier to
office environments.
The 802.11a standard, which supports data rates of up to 54 Mbps, is the
Fast Ethernet analog to 802.11b, which supports data rates of up to 11
Mbps. Like Ethernet and Fast Ethernet, 802.11b and 802.11a use an identical
MAC (Media Access Control). However, while Fast Ethernet uses the same
physical-layer encoding scheme as Ethernet (only faster), 802.11a uses an
entirely different encoding scheme, called OFDM (orthogonal frequency
division multiplexing).
The 802.11b spectrum is plagued by saturation from wireless phones,
microwave ovens and other emerging wireless technologies, such as
Bluetooth. In contrast, 802.11a spectrum is relatively free of interference.
Appendix
The 802.11a standard gains some of its performance from the higher
frequencies at which it operates. The laws of information theory tie
frequency, radiated power and distance together in an inverse relationship.
Thus, moving up to the 5-GHz spectrum from 2.4 GHz will lead to shorter
distances, given the same radiated power and encoding scheme.
ASUS SpaceLink 802.11g Access Point
59
Appendix
COFDM (for 802.11a)
Power alone is not enough to maintain 802.11b-like distances in an 802.11a
environment. To compensate, vendors specified and designed a new
physical-layer encoding technology that departs from the traditional directsequence technology being deployed today. This technology is called
COFDM (coded OFDM). COFDM was developed specifically for indoor
wireless use and offers performance much superior to that of spreadspectrum solutions. COFDM works by breaking one high-speed data carrier
into several lower-speed subcarriers, which are then transmitted in parallel.
Each high-speed carrier is 20 MHz wide and is broken up into 52
subchannels, each approximately 300 KHz wide. COFDM uses 48 of these
subchannels for data, while the remaining four are used for error correction.
COFDM delivers higher data rates and a high degree of multipath reflection
recovery, thanks to its encoding scheme and error correction.
Each subchannel in the COFDM implementation is about 300 KHz wide.
At the low end of the speed gradient, BPSK (binary phase shift keying) is
used to encode 125 Kbps of data per channel, resulting in a 6,000-Kbps, or
6 Mbps, data rate. Using quadrature phase shift keying, you can double the
amount of data encoded to 250 Kbps per channel, yielding a 12-Mbps data
rate. And by using 16-level quadrature amplitude modulation encoding 4
bits per hertz, you can achieve a data rate of 24 Mbps. The 802.11a standard
specifies that all 802.11a-compliant products must support these basic data
rates. The standard also lets the vendor extend the modulation scheme
beyond 24 Mbps. Remember, the more bits per cycle (hertz) that are
encoded, the more susceptible the signal will be to interference and fading,
and ultimately, the shorter the range, unless power output is increased.
Appendix
60
ASUS SpaceLink 802.11g Access Point
Appendix
7. Safety Information
Federal Communications Commission Statement
This device complies with FCC Rules Part 15. Operation is subject to the
following two conditions:
•
•
This device may not cause harmful interference, and
This device must accept any interference received, including interference
that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a
class B digital device, pursuant to Part 15 of the Federal Communications
Commission (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 the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that
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 or relocate 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.
CAUTION!
You are cautioned that changes or modifications not expressly
approved by the party responsible for compliance could void your
authority to operate the equipment.
ASUS SpaceLink 802.11g Access Point
Appendix
Reprinted from the Code of Federal Regulations #47, part 15.193, 1993.
Washington DC: Office of the Federal Register, National Archives and
Records Administration, U.S. Government Printing Office.
61
Appendix
Canadian Department of Communications
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme
NMB-003 du Canada.
Regulatory Information / Disclaimers
Installation and use of this Wireless LAN device must be in strict accordance
with the instructions included in the user documentation provided with the
product. Any changes or modifications (including the antennas) made to
this device that are not expressly approved by the manufacturer may void
the user's authority to operate the equipment. The manufacturer is not
responsible for any radio or television interference caused by unauthorized
modification of this device, or the substitution of the connecting cables
and equipment other than manufacturer specified. It is the responsibility of
the user to correct any interference caused by such unauthorized
modification, substitution or attachment. Manufacturer and its authorized
resellers or distributors will assume no liability for any damage or violation
of government regulations arising from failing to comply with these
guidelines.
CAUTION: To maintain compliance with FCC's RF exposure guidelines, this equipment should be installed and operated with minimum
distance [20cm] between the radiator and your body. Use on the supplied antenna. Unauthorized antenna, modification, or attachments
could damage the transmitter and may violate FCC regulations.
Safety Information
In order to maintain compliance with the FCC RF exposure guidelines,
this equipment should be installed and operated with minimum distance
[20cm] between the radiator and your body. Use only with supplied antenna.
Unauthorized antenna, modification, or attachments could damage the
transmitter and may violate FCC regulations.
Appendix
CAUTION: Any changes or modifications not expressly approved
in this manual could void your authorization to use this device.
62
ASUS SpaceLink 802.11g Access Point
Appendix
MPE Statement
Your device contains a low power transmitter. When device is transmitted
it sends out Radio Frequency (RF) signal.
Caution Statement of the FCC Radio Frequency
Exposure
This Wireless LAN radio device has been evaluated under FCC Bulletin
OET 65C and found compliant to the requirements as set forth in CFR 47
Sections 2.1091, 2.1093, and 15.247(b)(4) addressing RF Exposure from
radio frequency devices. The radiation output power of this Wireless LAN
device is far below the FCC radio frequency exposure limits. Nevertheless,
this device shall be used in such a manner that the potential for human
contact during normal operation – as a mobile or portable device but use in
a body-worn way is strictly prohibit. When using this device, a certain
separation distance between antenna and nearby persons has to be kept to
ensure RF exposure compliance. In order to comply with the RF exposure
limits established in the ANSI C95.1 standards, the distance between the
antennas and the user should not be less than [20cm].
RF Exposure
Appendix
The antenna(s) used for this transmitter must not be co-located or operating
in conjunction with any other antenna or transmitter.
ASUS SpaceLink 802.11g Access Point
63
64
ASUS SpaceLink 802.11g Access Point

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