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Page 46 / 141 Scroll up to view Page 41 - 45
ZyXEL P-330W User’s Guide
Chapter 5 Wireless
46
C
HAPTER
5
Wireless
This chapter discusses how to configure the Wireless screens on the P-330W.
5.1
Wireless LAN Overview
This section introduces the wireless LAN(WLAN) and some basic scenarios.
5.1.1
IBSS
An Independent Basic Service Set (IBSS), also called an Ad-hoc network, is the simplest
WLAN configuration.
An IBSS is defined as two or more computers with wireless adapters
within range of each other that from an independent (wireless) network without the need of an
access point (AP).
Figure 19
IBSS (Ad-hoc) Wireless LAN
5.1.2
BSS
A Basic Service Set (BSS) exists when all communications between wireless stations or
between a wireless station and a wired network client go through one access point (AP).
Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS is enabled,
wireless station A and B can access the wired network and communicate with each other.
When Intra-BSS is disabled, wireless station A and B can still access the wired network but
cannot communicate with each other.
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ZyXEL P-330W User’s Guide
47
Chapter 5 Wireless
Figure 20
Basic Service set
5.1.3
ESS
An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an
access point, with each access point connected together by a wired network. This wired
connection between APs is called a Distribution System (DS). An ESSID (ESS IDentification)
uniquely identifies each ESS.
All access points and their associated wireless stations within
the same ESS must have the same ESSID in order to communicate.
Page 48 / 141
ZyXEL P-330W User’s Guide
Chapter 5 Wireless
48
Figure 21
Extended Service Set
5.1.4
RTS/CTS
A hidden node occurs when two stations are within range of the same access point, but are not
within range of each other. The following figure illustrates a hidden node. Both stations (STA)
are within range of the access point (AP) or wireless gateway, but out-of-range of each other,
so they cannot “hear” each other, that is they do not know if the channel is currently being
used. Therefore, they are considered hidden from each other.
Figure 22
RTS/CTS
When station A sends data to the P-330W, it might not know that station B is already using the
channel. If these two stations send data at the same time, collisions may occur when both sets
of data arrive at the AP at the same time, resulting in a loss of messages for both stations.
Page 49 / 141
ZyXEL P-330W User’s Guide
49
Chapter 5 Wireless
5.2
Configuring Wireless
Click the
WIRELESS
link
to open the
Wireless Options
screen.
Figure 23
The Wireless Options Screen
5.3
Basic Settings
Click
BASIC SETTINGS
to configure the basic settings of your wireless LAN.
Note:
If you are configuring the P-330W from a computer
connected to the wireless LAN and you change the P-330W’s
SSID or WEP settings, you will lose your wireless connection
when you press Save. You must then change the wireless
settings of your computer to match the P-330W’s new settings.
Page 50 / 141
ZyXEL P-330W User’s Guide
Chapter 5 Wireless
50
Figure 24
Wireless: Basic Settings
The following table describes the basic wireless LAN labels in this screen.
Table 17
Wireless: Basic Settings
LABEL
DESCRIPTION
Disable Access
Point
Select this check box to disable the wireless LAN capabilities of your P-330W.
Band
Choose the operating mode of your wireless access point.
2.4Ghz (B+G)
offers the
greatest compatibility.
2.4 GHz (B)
will only allow 802.11b clients to connect to the
wireless LAN.
2.4 GHz (G)
will only allow 802.11g clients to connect to the wireless
LAN.
Mode
Mode allows you to change the wireless behavior of the P-330W.
AP
allows wireless
clients to connect to the P-330W.
Client
mode activates the Wireless ISP mode of
the router.
Use this mode to connect to a WISP or metro-area wireless network.
Network Type
Used when operating in Client mode.
This allows you to switch between
Infrastructure
and
Ad Hoc
networking modes.
SSID
(Service Set IDentity) The SSID identifies the Service Set with which a wireless
station is associated. Wireless stations associating to the access point (AP) must
have the same SSID. Enter a descriptive name (up to 32 printable 7-bit ASCII
characters) for the wireless LAN.
Note:
If you are configuring the P-330W from a computer connected
to the wireless LAN and you change the P-330W’s SSID or WEP
settings, you will lose your wireless connection when you press Apply
to confirm. You must then change the wireless settings of your
computer to match the P-330W’s new settings.
Channel
Number
To manually set the P-330W to use a channel, select a channel from the drop-down
list box.
Associated
Clients
Click
Show Active Clients
to be shown a list of wireless clients currently connected
to the Wireless LAN
Save
Click
Save
to save your changes back to the P-330W.
Reset
Click
Reset
to reload the previous configuration for this screen.

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