User's Manual

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3: Wireless LAN Configuration
3.1 Overview
IEEE 802.11, a Wireless LAN standard, requires one or more nodes and a wireless LAN access
point (hereinafter referred to AP) as basic network elements. Normally, the word “node” refers to the
notebook computers, personal computers, and PDAs that have Wireless LAN cards, although “node”
refers to LS100W devices in this manual.
3.1.1 Infrastructure Mode and Ad-hoc Mode
An AP is used to connect the LS100W to the Ethernet. Often it can be used to connect to the
Internet as well. This kind of mode is referred as an “infrastructure mode.” On wireless computer
networks, ”ad-hoc mode”, also called “peer-to-peer mode”, is a method for LS100W devices to
directly communicate with each other without an AP device. Ad-hoc mode can be very useful in
replacing cables between existing devices with a wireless connection method.
3.1.2 Network Name: SSID (Service Set Identifier)
In the wireless LAN network, users can set up the different names to the wireless LAN AP which
will compose the network. SSID is ID value for each AP, which is used to differentiate one network
from another. If users want to make the LS100W operate as an infrastructure mode within certain AP
network, users have to set up the SSID of the LS100W coincident with that of the AP. Therefore,
users have to check out the SSID of the AP first. However, when using ad-hoc mode, users must set
the same SSIDs to the LS100Ws which will be connected to each other. The maximum length of an
SSID that can be set in LS100W is 16 bytes. ASCII characters can be used to set it.
3.1.3 Channel
The LS100W searches for all accessible 802.11b Wireless LAN channels periodically, to find the
other APs. When the LS100W is first booted up, it searches for a preset AP (default value is ‘Default’),
and when the AP is found, it accesses that AP automatically. The LS100W should use the channel
belonging to the network group in which it belongs. In the case of infrastructure mode, the LS100W
checks the channel values being used in AP, and automatically sets the channel values identical to
the AP channels values. In ad-hoc mode, two channels in LS100W should be set to identical values.
Even when a certain value or an asterisk (‘ * ’) symbol is entered in a channel value entry using