User's Manual

Appendix D Wireless LANs
B222s User’s Guide
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disabled, wireless client A and B can still access t he wired net w ork but cannot com municate with
each ot her.
Figure 163 Basic Service Set
ESS
An Ext ended Service Set ( ESS) consist s of a series of overlapping BSSs, each cont aining an access
point , w it h each access point connect ed t oget her by a wired network. This wired connect ion
bet ween APs is called a Distribut ion System ( DS) .
This t y pe of w ireless LAN t opology is called an I nfrastructure WLAN. The Access Point s not only
provide com m unicat ion wit h t he wired net w ork but also m ediat e wireless network traffic in t he
im m ediat e neighborhood.