D-Link AirPlus DWL-900AP Manuale utente

D-Link Air DWL-900AP

Wireless Access Point

Manual

Please see the Quick Install Guide, included separately, for installation instructions.

Building Networks for People

Contents

Contents of Package................................................................................3

Introduction .......................................................................................................4

LED Display......................................................................................................5

Connections .....................................................................................................6

Wireless Basics.............................................................................................7

Network Topology.....................................................................................12

Operation Modes with the DWL-900AP................................14

Network Functions of the Access Point ................................16

USB Configuration Utility....................................................................19

SNMP Management Utility................................................................27

Networking Basics....................................................................................40

Technical Specifications .....................................................................54

D-Link locations ..........................................................................................57

Limited Warranty........................................................................................58

Registration.....................................................................................................61

Contents of Package

• DWL-900AP Wireless Access Point

• Installation CD

• Quick Install Guide

• AC Adapter

• USB cable

• Power Supply/Cord

• User’s Manual

If any of the above items are missing, please contact your reseller.

System requirements:

Computer with USB port

Microsoft Windows XP, 2000, ME, 98, 98SE

Introduction

The D-Link Air DWL-900AP 802.11b Wireless Access Point is an ideal way

to extend the reach and number of computers connected to your wireless

network or as part of a wired LAN (Local Area Network) with a wireless

segment.

A Wireless Access Point may be used to serve different functions, including:

• Bridge - The Wireless Access Point can be used to provide

access to the shared network facilities of an Ethernet LAN.

• Wireless LAN Extension - The effective communication range of

wireless workstations can be increased.

• Improve Signal Quality - Providing a central relay station can

provide a communication path for WLAN components that

otherwise might be prevented from “seeing” other WLAN

members.

• Wireless LAN Security - The Wireless Access Point can be

configured to use encryption for improved security on a WLAN.

After completing the steps outlined in the Quick Install Guide (included

separately) you will have the ability to share information and resources, such

as files and printers, and take full advantage of a “connected” environment

for work and play!

This manual provides a quick introduction to wireless technology and its

application as it relates to networking. Take a moment to read through this

manual and familiarize yourself with wireless technology. But you should

also give yourself some time to become familiar with your new wireless

network.

LED Display

Front Panel

LED Display

On Blink Off

Power Unit is plugged in and

working normally.

Unit is booting up and

running self diagnostic

test

Unit is not plugged in

and it is off

LAN

Ethernet cable is

plugged in and there

is a valid network

connection.

The Ethernet port is

active

Ethernet cable not

plugged in or the

connection is not valid

WLAN N/A Detecting Wireless

LAN network activities

No Wireless LAN

network available in

the vicinity

Connections

Rear Panel

Connections

Power

5V=1A

Plug in the AC/DC adapter here. Please make sure to plug in adapter to the Wireless

Access Point before plugging the other end of the power adapter to an electrical

wall outlet or power strip.

Console

The USB console port is used to make the USB connection from the device to a

computer with the USB cable for first time configuration and configuration using the

Wireless AP USB Utility.

Ethernet The Ethernet port is used to connect the Wireless Access Point to the Ethernet LAN or a

single computer using an Ethernet cable (RJ-45).

Note: To use the USB port on the Wireless Access Point, the computer that performs

the configuration must have a USB interface with Windows XP, 2000, 98, or ME

installed. USB is not supported under Windows NT or Windows 95.

Caution: Use only the power adapter included with the

device!

Wireless Basics

D-Link Air wireless products are based on industry standards to provide easy

to use and compatible high-speed wireless connectivity within your home or

business. Strictly adhering to IEEE 802.11b, the D-Link Air wireless family of

products will allow you to access the data you want, when and where you

want it. No longer will you be tethered to a workstation or forced to run new

wiring. You will be able to enjoy the freedom that wireless networking

delivers.

A wireless LAN (WLAN) is a cellular computer network that facilitates

communication with radio signals instead of wires. Wireless LANs are used

increasingly in both home and corporate environments. Innovative ways to

utilize WLAN technology are helping people to work and communicate more

efficiently. Increased mobility and the absence of cabling and other fixed

infrastructure has proven to be beneficial for many users.

WLAN users can use the same network applications they use on an Ethernet

LAN. WLAN adapter cards used on laptop and desktop systems, support the

same protocols as Ethernet adapter cards. For most users, there is no

noticeable functional difference between a wired Ethernet desktop computer

or mobile WLAN workstation other than the added benefit of the ability to

roam within the WLAN-cell. Under many circumstances, it may be desirable

for mobile network devices to link to a conventional Ethernet LAN in order

use servers, printers or an Internet connection supplied through the wired

LAN. The Wireless Access Point is a device used to provide this link.

People use wireless LAN technology for many different purposes.

Wireless Basics (continued)

Mobility - Productivity increases when people have access to data in any

location within the operating range of the WLAN. Ad-hoc management

decisions based on real-time information can significantly improve worker

efficiency.

Low Implementation Costs - WLANs are easy to set up, manage, change

and relocate. Networks that frequently change, both physically and logically,

can benefit from WLANs ease of implementation. WLANs can operate in

locations where installation of wiring may be impractical. Furthermore, IEEE

standardization mandates interoperability of all WLAN devices that conform

to the 802.11b set of standards.

Installation Speed and Simplicity - Installing a wireless LAN system can be

fast and easy and can eliminate the need to pull cable through walls and

ceilings.

Installation Flexibility - Wireless technology allows the network to go where

wires cannot go.

Reduced Cost-of-Ownership - While the initial investment required for

wireless LAN hardware might be higher than the cost of wired LAN hardware,

overall installation expenses and life-cycle costs will be significantly lower.

Long-term cost benefits are greatest in dynamic environments requiring

frequent moves, adds, and changes.

Scalability - Wireless LAN systems can be configured in a variety of

topologies to meet the needs of specific applications and installations.

Configurations are easily changed and range from peer-to-peer networks

suitable for a small number of users to full infrastructure networks of

thousands of users that allows roaming over a broad area.

Wireless Basics (continued)

Our full range of D-Link Air Wireless LAN products include:

 Wireless PC cards used with laptop computers

 Wireless PCI cards used with desktop computers

 Wireless Access Points

 Wireless Home Gateways

Standards - Based Technology

The IEEE 802.11b standard designates that devices operate at an optimal

data rate of 11 Megabits per second. This means you will be able to transfer

large files quickly or even watch a movie in MPEG format over your network

without noticeable delays. This technology works by using multiple

frequencies in the 2.4GHz range utilizing Direct Sequence Spread Spectrum

(DSSS) technology. D-Link Air products will automatically sense the best

possible connection speed to ensure the greatest speed and range possible

with the technology.

Features and Standards

Wireless LAN technology is based on the internationally recognized IEEE

802.11 set of standards for wireless LANs. The Wireless Access Point is fully

compliant with the IEEE 802.11b standard and can inter-operate with other

compliant equipment.

The DWL-900AP Wireless Access Point also complies with the following

regulatory standards:

• FCC part 15 Class A with no external shielding

• FCC part 15 Class B, ETS 300-339 compliance, including CE mark

• The regulatory requirements for Japan, Europe and many other areas

of the world

Wireless Basics (continued)

The Wireless Access Point features include:

• Data transfer rates of up to 11 Mbps in optimal conditions

• An effective range of up to 900 feet (300 meters) outdoors or 300 feet

(100 meters) indoors

• 10BaseT Ethernet port interface for bridging Wireless LAN to an

Ethernet LAN

• Seamless roaming for notebook computers, wireless PCs, and other

computers equipped with Wireless LAN

• Built-in diagnostics including a power-up self-check

• Dual antenna assembly with optional diversity

• Firmware can be upgraded easily in the field

• Data encryption (WEP 64 and WEP 128)

• SNMP support

• DHCP support (client)

• Optional Short RF preamble

• USB Configuration

Installation Considerations

Designed to go up to 300 feet (100 meters) indoors and up to 900 feet (300

meters) outdoors, D-Link Air DWL-900AP lets you access your network from

virtually anywhere you want. Keep in mind, however, that the number and

thickness of walls, ceilings or other objects that the wireless signals must

pass thru may limit range. Typical ranges vary depending on the types of

materials and background RF noise in your home or business. The key to

maximizing range is to follow these basic principles:

1. Keep the number of walls and ceilings between the access point and

your receiving device to a minimum - Each wall or ceiling can reduce

your D-Link Air Wireless product’s range from 3-90 feet. For some

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