Airlinkplus RT211W User manual

54Mbps Wireless Access Point
User Manual

2003 All rights reserved. No part of this document may be
reproduced or transmitted in any form or by any means, electronic
or mechanical, for any purpose, without the express written
permission of the seller.
Disclaimer
Information in this document is subject to change without notice.
The material contained herein is supplied without representation or
warranty of any kind. The seller therefore assumes no
responsibility and shall have no liability of any kind arising from the
supply or use of this document or the material contained herein.
Trademarks
Microsoft and Windows are registered trademarks of Microsoft
Corporation. 54g is a registered trademark of Broadcom
corporation. All other trademarks mentioned in this document are
the property of their respective owners.
March 14, 2003 Rev01
F/W:2.02.10

i
Safety Instructions
For Installation
• Use only the type of power source indicated on the
marking labels.
• Use only the power adapter supplied with the product.
• Do not overload wall outlet or extension cords as this may
increase the risk of electric shock or file. If the power cord
is frayed, replace it with a new one.
• Proper ventilation is necessary to prevent the product
overheating. Do not block or cover the slots and openings
on the device, which are intended for ventilation and
proper operation. It is recommended to mount the product
with a stack.
• Do not place the product near any source of heat or
expose it to direct sunshine.
• Do not expose the product to moisture. Never spill any
liquid on the product.
• Do not attempt to connect with any computer accessory or
electronic product without instructions from qualified
service personnel. This may result in risk of electronic
shock or file.
• Do not place this product on an unstable stand or table.
For Using
• Power off and unplug this product from the wall outlet
when it is not in use or before cleaning. Pay attention to
the temperature of the power adapter. The temperature
might be high.
• After powering off the product, power on the product at
least 15 seconds later.
• Do not block the ventilating openings of this product.
• When the product is expected to be not in use for a period
of time, unplug the power cord of the product to prevent it
from the damage of storm or sudden increases in rating.

ii
For Service
Do not attempt to disassemble or open covers of this unit yourself.
Nor should you attempt to service the product yourself, which may
void the user’s authority to operate it. Contact qualified service
personnel under the following conditions:
• If the power cord or plug is damaged or frayed.
• If liquid has been spilled into the product.
• If the product has been exposed to rain or water.
• If the product does not operate normally when the
operating instructions are followed.
• If the product has been dropped or the cabinet has been
damaged.
• If the product exhibits a distinct change in performance.

iii
FCC Information
FCC Statement
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 the instructions, may cause
harmful interference to radio communication. 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.
FCC Conditions
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.
2. This device must accept any interference received, including
interference that may cause undesired operation.
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 minimum distance of 20cm between the
radiator & your body.

iv
About This User Manual
For brevity, throughout this manual the “Wireless Broadband
Router” is referred to as “the router” or “the device” and following
terms or abbreviations are used interchangeably:
• Access Point-AP
• Wireless LAN-WLAN
• Ethernet network-LAN-network
This User Manual contains information on how to install and
configure your Wireless Broadband Router to get your network
started accessing the Internet. From now on, we will guide you
through the correct configuration steps to get your device up and
run.

v
Contents
1Introduction..................................................1
1.1 Overview........................................................................1
1.2 Package Contents.........................................................1
1.3 Wireless Network Scenarios..........................................2
2Hardware Description & Installation.............5
2.1 Physical Outlook............................................................5
Front Panel..................................................................5
Rear Panel and Connectors........................................6
2.2 Hardware Connection....................................................6
Choosing a Place for the AP.......................................6
Connecting the AP......................................................7
3Setting Up Ethernet / WLAN Client..............9
3.1 Setting up TCP/IP..........................................................9
For Windows 98/ME..................................................10
For Windows 2000/XP...............................................10
3.2 Setting up Wireless Client............................................11
3.3 Checking Connection with the AP................................12
4Web Configuration.....................................13
4.1 Accessing Web-Based Configuration Utility.................13
To enable Your Settings ............................................14
4.2 Viewing System Status................................................15
4.3 LAN Configuration.......................................................15
Manually Specifying an IP Address...........................15
Enabling DHCP Server..............................................16
Setting the AP to be DHCP Client.............................16
Viewing Current DHCP Assignments........................17
4.4 Wireless LAN (2.4G) Configuration..............................18
4.5 Administration..............................................................23

1
1 Introduction
1.1 Overview
Thank you for choosing this 54Mbps Wireless Access Point. The
Access Point is a transparent bridge device which provides mobile
wireless clients the connectivity to a wired network. This enables
the wireless clients to access all available resources and
peripherals on the wired network. In addition, multiple Access
Points can be installed to extend the wireless service coverage
area for seamless wireless access.
With the support of new emerged 802.11g draft standard, the
Access Point provides data transfer of up to 54 Mbps, up to 5 times
faster than 802.11b. Since 802.11g operates on the same
frequency of 2.4 GHz as 802.11b, it is backwards compatible with
existing Wi-Fi 802.11b devices. The benefit is that you can
preserve the existing 802.11b infrastructure while migrating to the
new screaming fast 802.11g.
In addition, this Access Point has an integrated DHCP server which
automatically assigns IP addresses to your wireless devices. The
AP also implements a built-in Web server for easy configuration.
1.2 Package Contents
Check the contents of the package against the pack contents
checklist below. If any of the items is missing, then contact the
dealer from whom the equipment was purchased.
• 54Mbps Wireless Access Point x1
• Power Adapter and Cord x1
• CD-ROM x1
• RJ-45 Ethernet Cable x1

54Mbps Wireless Access Point User Manual
2
1.3 Wireless Network Scenarios
An AP is used as a bridge linking the wireless network to a wired
LAN and thus creating an Infrastructure network. According to the
scale of your network, you can install a single AP or multiple APs to
create a roaming wireless network.
The simplest Infrastructure network is depicted as the figure below
where a group of wireless clients and an AP composes a Basic
Service Set (BSS). As this 54Mbps AP is 802.11g and 802.11b
compliant, it is capable of linking both the 802.11g and 802.11b
wireless clients to your wired network.
Figure 1-1 Connecting to a single AP
For larger area, you can also choose to implement multiple APs to
extend the wireless service coverage area for seamless wireless
access. A group of wireless clients and multiple APs using the
same SSID form an Extended Service Set (ESS). The figure below
shows a typical roaming wireless network within which each AP
operates in an independent channel. But all the APs use an
identical SSID and security settings (if enabled).
For the mobile clients that want to wander across the different APs
but maintain the network connectivity at all times, they must
operate in Infrastructure mode and use the same SSID and
security settings (if enabled) with the APs. If the APs are “open”,
that is, periodically broadcast their SSIDs to allow the wireless

1. Introduction
3
clients to recognize their presence, then wireless clients can use
the special SSID “any” to associate with these “open” APs.
Figure 1-2 Roaming between multiple APs

5
2 Hardware Description &
Installation
2.1 Physical Outlook
Front Panel
The following illustration shows the front panel of the AP:
LED Indicators
The Access Point is equipped with three LEDs on the front panel
as described in the table below (from left to right):
LEDs Function Color Status Description
Off No power is supplied to the unit.
Power Green
Solid Power is connected to the unit.
Off WLAN interface is not initialized
properly.
On WLAN interface is initialized properly
and ready.
WLAN Wireless LAN
Port
Ready/Activity
Green
Blinking Transmitting/receiving packets on the
WLAN port.
Off Power is off or no Ethernet device is
connected.
On Ethernet device is connected.
LAN LAN Port
Status Orange
(100 Mbps)
Green
(10 Mbps) Blinking Transmitting/receiving packets on the
LAN port.

54Mbps Wireless Access Point User Manual
6
Rear Panel and Connectors
The following figure illustrates the rear panel of your 54Mbps
Wireless Access Point.
• DC 5V/2A: Power connector
• LAN: 10/100BaseT LAN port of RJ-45 connector.
Connects to a hub, switch or NIC-equipped PC in your
network. The LAN port supports Auto-MDIX feature; it
works with either a straight-through or crossover cable.
• Reset button
To reset the device to factory defaults, insert a
straightened paperclip into the Reset hole to press the
button. Keep pressing and power cycle (off and on) the
device. Wait for at least 5 seconds to release the button.
Then wait the device to finish booting.
If you want to restore your customized settings after loading
defaults, refer to “4.5 Administration” for more information.
2.2 Hardware Connection
Choosing a Place for the AP
• Place the device close to the power outlet for the cable to
reach it easily.
• Locate an optimum location for the AP, usually at the
center of your wireless network to provide best coverage
for wireless stations.
• Adjust the direction of the antennas to enhance the
receiving sensitivity.

2. Hardware Description & Installation
7
Connecting the AP
Follow the steps below to connect the related devices.
Step 1 Connecting the power adapter.
Connect the single DC output connector of the power
adapter to the power jack on the back of the AP. Then
connect the supplied power cord to the power adapter and
the other end to an AC outlet.
Step 2 Connecting to Ethernet network.
Attach one end of the Ethernet cable with RJ-45
connectors to your hub, switch or a PC’s Ethernet port,
and the other end to the LAN port of your AP.

9
3 Setting Up Ethernet / WLAN
Client
This chapter describes how to configure an Ethernet or wireless
station to access the AP’s built-in Web server for initial
configuration.
You can choose to access the AP’s Web interface via Ethernet or
wireless network. Whatever your choice, you must properly
configure the network settings of your PC to be on the same
subnet with the AP. As the AP is shipped with these defaults:
• IP address: 192.168.1.1
• Subnet mask: 255.255.255.0
• DHCP server: Disabled
Therefore, you should configure your PC’s TCP/IP settings to use a
static IP as below:
• IP address: 192.168.1.x (x is between 2 and 254)
• Subnet mask: 255.255.255.0
• Gateway: 192.168.1.1
The ensuing sections will guide you through the static IP
configurations. Once you have enabled the AP’s DHCP server
function, you may just set your PC to be a DHCP client.
3.1 Setting up TCP/IP
Before proceeding, make sure your computer is equipped with
Ethernet network card or wireless adapter and has appropriate
network card driver and TCP/IP installed.
Note: If TCP/IP protocol is not installed on your PC, refer to
Windows documentations for installation instructions.

54Mbps Wireless Access Point User Manual
10
For Windows 98/ME
Step 1 Click on the Start menu, point to Settings and click on
Control Panel.
Step 2 Double-click the Network icon.
Step 3 In the Network window, highlight TCP/IP protocol for your
NIC or wireless adapter and click Properties.
Step 4 On the IP Address tab, select Specify an IP address.
Then enter the IP address (192.168.1.1x) and subnet
mask (255.255.255.0) in the provided fields.
Select the Gateway tab and set the gateway as
192.168.1.1.
Step 5 Click OK twice to finish the configuration. If your network
settings have been changed, you will be prompted to
restart your computer. Click Yes to have new settings take
effect.
For Windows 2000/XP
Step 1 Click on the Start menu, point to Settings and click on
Control Panel.
Step 2 Double-click Network Dial-up Connections (Windows
2000) or Network Connections (Windows XP) in Control
Panel.
Step 3 Right-click the Local Area Connection icon for your NIC
or wireless adapter and then click Properties.
Step 4 On the General tab, highlight Internet Protocol (TCP/IP)
and then click Properties.
Step 5 Enable the Use the following IP Address option and
enter these settings:
• IP address: 192.168.1.x (x is between 2 and 254)
• Subnet mask: 255.255.255.0.
• Default Gateway: 192.168.1.1.
Step Click
OK to finish the configuration.

3. Setting Up Ethernet / WLAN Client
11
3.2 Setting up Wireless Client
If you choose to access the router via a wireless client, also verify
the following:
1. Make sure your PC is equipped with 802.11g or 802.11b
wireless adapter and has appropriate WLAN card driver/utility
and TCP/IP installed.
2. Set the wireless adapter to use appropriate TCP/IP settings as
described in previous section.
3. Launch the wireless adapter’s provided utility and verify that
your wireless client is configured with these settings:
• Operation Mode: Infrastructure
• SSID: 11g AP
• Authentication: Open
• WEP Mode: Disabled
Note: If you only finished the wireless settings and didn’t configure
the wireless adapter’s TCP/IP settings, even your link status
indicates a successful connection with the AP, this connection
applies to the “physical” network layer only. Your wireless adapter
cannot communicate with the AP. Make sure to set the TCP/IP
properties as described in previous section.

54Mbps Wireless Access Point User Manual
12
3.3 Checking Connection with the AP
You can use the Ping command to verify whether or not your
Ethernet/Wireless client has successfully connected to the 54Mbps
Wireless Access Point.
To execute the ping command, open the DOS window and ping the
IP address of the AP at the DOS prompt. For example:
ping 192.168.1.1
If the following response occurs:
Reply from 192.168.1.1 bytes=32 time=100ms TTL=253
Then the connection between the 54Mbps Wireless Access Point
and the network has been successfully established.
Otherwise, if you get a failed ping with the response of:
Request time out
Then the connection is fail. Verify your network setting is correct.
For Ethernet client, also check the cable between the AP and the
PC.

13
4 Web Configuration
4.1 Accessing Web-Based Configuration Utility
Once your PC is properly configured as described in "3. Setting Up
Ethernet / WLAN Client", you can proceed as follows for initial
configuration:
1. Start your Web browser and type http://192.168.1.1 in the
URL field. This address is the default private IP of your AP.
2. After connecting to the device, you will be prompted to enter
the username and password. Leave the username empty and
enter the default password of admin.
Figure 4-1 Login to Web Configuration Utility
After you login, the System Overview page of the 54Mbps
Wireless Access Point displays. From now on the Access Point
acts as a Web server sending HTML pages/forms on your request.
You can click the menu options at the top to start your
configuration task.
While working with this Web Configuration Utility, corresponding
configuration fields are displayed according to your specific
selection to avoid any possible conflicting setting. In addition,
should you input invalid values, the utility provides instant prompt
to help you recover from error inputs.

54Mbps Wireless Access Point User Manual
14
To enable Your Settings
After you have customized the settings and then click the Apply
button, the device will begin registering your settings. You will be
prompted to wait for a few seconds for the AP to commit changes
to permanent storage. During this process, it is important not to
switch on or off the AP otherwise damage may be caused to the
device.
After the settings have been registered, the screen will return to
previous page and the settings are effective. You may then
proceed with other configuration tasks.
Figure 4-2 Apply Changes
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Table of contents
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