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ZyXEL Communications G-160 2.1.5 Roaming, Figure 2-3Infrastructure Network Example

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ZyAIR G-160 User’s Guide

Figure 2-3 Infrastructure Network Example

2.1.5 Roaming

In an infrastructure network, wireless stations are able to switch from one BSS to another as they move between the coverage areas. During this period, the wireless stations maintain uninterrupted connection to the network. This is roaming. As the wireless station moves from place to place, it is responsible for choosing the most appropriate AP depending on the signal strength, network utilization or other factors.

The following figure depicts a roaming example. When Wireless Station B moves to position X, the ZyAIR in wireless station B automatically switches the channel to the one used by access point 2 in order to stay connected to the network.

Using the ZyAIR Utility

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Contents

Page Copyright ZyXEL Limited Warranty Information for Canadian Users Federal Communications Commission (FCC) Interference Statement Page Customer Support Page Table of Contents Appendix B Types of EAP Authentication Index List of Figures List of Tables Preface Page Getting Started 1.1About Your ZyAIR 1.2ZyAIR Hardware and Utility Installation 1.3Disable Windows XP Wireless LAN Configuration Tool 1.3.1 The Connect to Wireless Network Screen Page 1.4Accessing the ZyAIR Utility 1.5Common Screen Command Buttons Page Using the ZyAIR Utility 2.1About Wireless LAN Network 2.1.1 Channel 2.1.2SSID 2.1.3 Transmission Rate (Tx Rate) Ad-Hoc(IBSS) Figure 2-1 Ad-hocNetwork Example To set up an ad-hocnetwork, configure all wireless stations in ad-hocnetwork type and use the same SSID and channel Infrastructure 2.1.5 Roaming 2.1.6 Profile 2.1.7 Threshold Controls 2.1.8 Wireless LAN Security 2.1.9 Data Encryption with WEP 2.1.10 Authentication Mode 2.1.11 Preamble Type 2.1.12 IEEE 2.1.13 WPA 2.1.14 WPA-PSKApplication Example 2.1.15 WPA with RADIUS Application Example 2.2The Main Screen Figure 2-9Main Table 2-1Main 2.2.1 Connecting to a Network 2.2.2 The New Connection screen This only works if the wireless device to which the ZyAIR is connected also supports this feature 2.2.3 The Advanced Screen Figure 2-11Main: Advanced Table 2-3Main: Advanced 2.3The Advanced Screen Table 2-4Advanced 2.4The Privacy Screen 2.4.1 WEP Configuration Figure 2-14WEP Configuration Table 2-6WEP Configuration The values for the keys must be set up exactly the same on all wireless devices in the same wireless LAN ASCII WEP key is case sensitive 2.4.2 802.1x Configuration 2.4.3 WPA-PSKConfiguration 2.5The Statistics Screen Figure 2-17Statistics Table 2-9Statistics 2.6The About Screen Figure 2-18About Table 2-10About Maintenance 3.1Removing the ZyAIR Utility 3.2Upgrading the ZyAIR Utility Page Troubleshooting 4.1Problems Starting the ZyAIR Utility Program 4.2Problems Communicating With Other Computers 4.3Problem with the Link Status Appendix A Product Specifications Page Appendix B Types of EAP Authentication LEAP Comparison of EAP Authentication Types Index