User Manual

Getting Started Basic Configuration

2-13

To tell the SCS which ESS it belongs to, enter the Set/Define 80211 ESSID command. The exact string you

enter will be determined by the settings of the AP with which you want the SCS to communicate.

Figure 2-23: Configuring the ESS ID

Setting the ESSID to none (Set/Define 80211 ESSID None) allows the SCS to associate with any AP within

range.

2.4.5.6 Network Mode

There are two types of 802.11 networks: ad-hoc and infrastructure. In an ad-hoc network, devices

communicate directly with one another on a peer-to-peer basis. In an infrastructure network (the default),

several devices communicate with one or more APs. The APs may or may not be connected to a physical

Ethernet network. You must tell your SCS which type of network is present with the Set/Define 80211

Network Mode command.

Figure 2-24: Configuring the Network Mode

The network mode setting relates to the channel setting, explained next.

2.4.5.7 Channel

The frequency band allocated to 802.11 wireless communications is subdivided into different channels to

allow subnetworking. Your SCS needs to know which channel it should use for communications—the

channel will be the same as the one being used by the local AP. The default setting, Any, causes the SCS to

use the same channel used by the strongest AP with the same ESSID.

For infrastructure network mode, you should set the channel to Any so that the SCS can synchronize with

an AP. For Ad-Hoc network mode, you should set a specific channel number so that the SCS can start a new

IBSS if needed. When the channel is set to Any, the SCS can only join an existing IBSS.

Figure 2-25: Configuring the 802.11 Channel

2.4.5.8 WEP

Some 802.11 cards can be set with a WEP key, which will encrypt any data you transmit through wireless

communication. To enable WEP, enter the following command:

Figure 2-26: Enabling WEP

Local>> SET 80211 ESSID “floor3”

Local>> SET 80211 RESET

Local>> DEFINE 80211 NETWORKMODE ADHOC

Local>> SET 80211 RESET

Local>> DEFINE 80211 NETWORKMODE INFRASTRUCTURE

Local>> SET 80211 RESET

Local>> DEFINE 80211 CHANNEL 7

Local>> SET 80211 RESET

Local>> DEFINE 80211 WEP ENABLED

Local>> SET 80211 RESET