ZyXEL Communications Wireless Gateway Series User Manual

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ZyAIR Wireless Gateway Series User’s Guide 
Wireless Configuration and Roaming 
        6-1 
Chapter 6 
 Wireless Configuration and Roaming 
This chapter discusses how to configure the Wireless and Roaming screens on the ZyAIR. 
6.1 Wireless 
LAN 
Overview 
This section introduces the wireless LAN(WLAN) and some basic scenarios.  
6.1.1 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 6-1 IBSS (Ad-hoc) Wireless LAN 
6.1.2 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.