CNet WNOR5305 user manual download (Page 62 of 69)

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5.4 How does wireless networking work?
The 802.11 standard define two modes: infrastructure mode and ad hoc mode. In infrastructure mode, the wireless network
consists of at least one access point connected to the wired network infrastructure and a set of wireless end stations. This
configuration is called a Basic Service Set (BSS). An Extended Service Set (ESS) is a set of two or more BSSs forming a
single sub-network. Since most corporate WLANs require access to the wired LAN for services (file servers, printers, In-
ternet links) they will operate in infrastructure mode.
Example
example 1: wireless Infrastructure Mode
Ad hoc mode (also called peer-to-peer mode or an Independent Basic Service Set, or IBSS) is simply a set of 802.11 wire-
less stations that communicate directly with one another without using an access point or any connection to a wired net-
work. This mode is useful for quickly and easily setting up a wireless network anywhere that a wireless infrastructure does
not exist or is not required for services, such as a hotel room, convention center, or airport, or where access to the wired
network is barred (such as for consultants at a client site).
Example 2: wireless Ad Hoc Mode
Sample
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