Cisco Linksys WAP55AG Manuel utilisateur

Slide 1

WWW.LINKSYS.COM

Dual-Band Wireless A + G

Access Point

Model No: WAP55AG

August 2003

Slide 2

Agenda

•Knowledge Check

•Product Information

–Product Description

–Features & Benefits

–Home & Business Usages

–Package Contents

–Access Point’s Front Panel / Back Panel

–Technical Specifications

–Environmental Specifications

•Product Installation

–Hardware Installation

–Device Configuration using Setup CD

–User Interface

•Troubleshooting

•FAQs

Knowledge Check

•Access Point

The Instant Wireless Network Access Point is a transparent Media

Access Control (MAC) bridge that provides access for wireless stations

to a wired local area network (LAN).

With an Access Point, wireless workstations can be added quickly and

easily to an existing wired network.

•802.11a -- an extension to 802.11 that applies to wireless LANs

and provides up to 54Mbps in the 5GHz band. 802.11a uses an

orthogonal frequency division multiplexing encoding scheme

rather than FHSS or DSSS.

•802.11b (also referred to as

802.11 High Rate

or Wi-Fi) -- an

extension to 802.11 that applies to wireless LANS and provides 11

Mbps transmission (with a fallback to 5.5, 2 and 1 Mbps) in the

2.4 GHz band. 802.11b uses only DSSS. 802.11b was a 1999

ratification to the original 802.11 standard, allowing wireless

functionality comparable to Ethernet.

Knowledge Check

•802.11g - A extension of the IEEE 802.11 standard for wireless

networking hardware. The 802.11g specifications used by Linksys

specify a maximum data transfer rate of 54Mbps using OFDM

modulation, an operating frequency of 2.4GHz, backward compatibility

with IEEE 802.11b devices and WEP encryption for security.

•OFDM (Orthogonal Frequency Division Multiplexing)

Orthogonal frequency-division multiplexing (OFDM) is a method of

digital modulation in which a signal is split into several narrowband

channels at different frequencies.

•ISM band - The FCC and their counterparts outside of the U.S. have

set aside bandwidth for unlicensed use in the ISM (Industrial,

Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in

particular, is being made available worldwide.

Knowledge Check

•Frequency Hopping Spread Spectrum (FHSS) uses a narrowband

carrier that changes frequency in a pattern that is known to both

transmitter and receiver. Properly synchronized, the net effect is to

maintain a single logical channel. To an unintended receiver, FHSS

appears to be short-duration impulse noise.

•Direct Sequence Spread Spectrum (DSSS) generates a redundant

bit pattern for each bit to be transmitted. This bit pattern is called a

chip (or chipping code). The longer the chip, the greater the

probability that the original data can be recovered. Even if one or

more bits in the chip are damaged during transmission, statistical

techniques embedded in the radio can recover the original data

without the need for retransmission. To an unintended receiver,

DSSS appears as low power wideband noise and is rejected (ignored)

by most narrowband receivers.

Knowledge Check

Wireless Network Type - Infrastructure

WAP55AG

Slide 8

Knowledge Check

Slide 9

•The Linksys Dual-Band Wireless A+G Access

Point gives you universal wireless

connectivity. It’s the best way to add

wireless capability to your existing wired

network, or to add bandwidth to your

wireless installation.

•The Dual-Band Wireless A+G Access Point

contains two separate wireless connectivity

radio transceivers, which support all three

popular wireless networking specification.

•Protects your data and privacy, the A+G

Access Point can encrypt all wireless

transmissions. The MAC Address filter lets

you decide exactly who has access to your

wireless network, while Dynamic Frequency

Selection (DFS) puts your network on the

cleanest channel in your location.

Product Description

Slide 10

Features and Benefits

Features

•Dual-band, tri-standard Access

Point communicates with

Wireless-A (802.11a), Wireless-

B (802.11b), and Wireless-G

wireless networks

•Protect your wireless

investment while preparing your

infrastructure for the future

•Advanced features: SNMP

manageability, and Dynamic

Frequency Selection (DFS)

•Powerful security: Up to 152-bit

wireless data encryption (WEP),

and wireless MAC address filter

Benefits

•Set up a high-speed Wireless-G

network in your home or office

•Data rates up to 54Mbps – almost

five times as fast as Wireless-B

(802.11b)

•Also interoperates with Wireless-B

networks (at 11Mbps)

•Advanced wireless security with

128-bit WEP encryption and MAC

filtering

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