Netgear WPN802 User Manual download pdf (Page 61)

Reference Manual for the NETGEAR RangeMax™ Wireless Access Point WPN802

Wireless Networking Basics B-7

202-10101-01, May 2005

WEP Configuration Options

The WEP settings must match on all 802.11 devices that are within the same wireless network as

identified by the SSID. In general, if your mobile clients will roam between access points, then all

of the 802.11 access points and all of the 802.11 client adapters on the network must have the same

WEP settings.

Note: Whatever keys you enter for an AP, you must also enter the same keys for the client adapter

in the same order. In other words, WEP key 1 on the AP must match WEP key 1 on the client

adapter, WEP key 2 on the AP must match WEP key 2 on the client adapter, and so on.

Note: The AP and the client adapters can have different default WEP Keys as long as the keys are

in the same order. In other words, the AP can use WEP key 2 as its default key to transmit while a

client adapter can use WEP key 3 as its default key to transmit. The two devices will communicate

as long as the AP’s WEP key 2 is the same as the client’s WEP key 2 and the AP’s WEP key 3 is

the same as the client’s WEP key 3.

Wireless Channels

The wireless frequencies used by 802.11b/g networks are discussed below.

IEEE 802.11b/g wireless nodes communicate with each other using radio frequency signals in the

ISM (Industrial, Scientific, and Medical) band between 2.4 GHz and 2.5 GHz. Neighboring

channels are 5 MHz apart. However, due to spread spectrum effect of the signals, a node sending

signals using a particular channel will utilize frequency spectrum 12.5 MHz above and below the

center channel frequency. As a result, two separate wireless networks using neighboring channels

(for example, channel 1 and channel 2) in the same general vicinity will interfere with each other.

Applying two channels that allow the maximum channel separation will decrease the amount of

channel cross-talk, and provide a noticeable performance increase over networks with minimal

channel separation.

The radio frequency channels used in 802.11b/g networks are listed in Table B-2:

Table B-2: 802.11b/g Radio Frequency Channels

Channel Center Frequency Frequency Spread

1 2412 MHz 2399.5 MHz - 2424.5 MHz

2 2417 MHz 2404.5 MHz - 2429.5 MHz

3 2422 MHz 2409.5 MHz - 2434.5 MHz

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 87 88

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Netgear WPN802 User Manual Page 61