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In the ESS diagram below, communication is done through the access points, which relay
data packets to other wireless stations or devices connected to the wired network. Wireless
stations can then access resources, such as a printer, on the wired network.
In an ESS environment, users are able to move from one access point to another without
losing the connection. In the diagram below, when the user moves from BSS (1) to BSS (2)
the adapter automatically switches to the channel used in BSS (2).
Roaming in an ESS network diagram
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