Wireless Network Configurations

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There are a few main ways that
a wireless network can be configured. There are ad-hoc networks where nodes
all speak directly to each other. There are wireless LANS or
WLANS where one or more access points act as a bridge
between a wireless and a wired network. And there are mesh networks which
are kind of a hybrid of the two. Ad-hoc networks are the simplest of
the three, in an ad-hoc network, there isn’t really any supporting
network infrastructure. Every device involved with the network
communicates with every other device within range and
all nodes help pass along messages. Even though they’re the most simple,
ad-hoc networks aren’t the most common type of wireless network, but
they do have some practical applications. Some smartphones can establish ad-hoc
networks with other smartphones in the area so that people can exchange
photos, video or contact information. You’ll also sometimes see ad-hoc networks
used in industrial or warehouse settings, where individual pieces of equipment might
need to communicate with each other, but not with anything else. Finally, ad-hoc networks can be powerful
tools during disaster situations. If a natural disaster
like an earthquake or hurricane knocks out all of
the existing infrastructure in an area, disaster relief professionals can use
an ad-hoc network to communicate with each other while they perform search and
rescue efforts. The most common type of
wireless network you’ll run into in the business world
is a wireless LAN or WLAN. A wireless LAN consists of one or
more access points, which act as bridges between
the wireless and wired networks. The wired network operates as a normal
LAN, like the types we’ve already discussed, the wired LAN contains
the outbound internet link. In order to access resources
outside of the WLAN, wireless devices would
communicate with access points. They then forward traffic
along to the gateway router, where everything proceeds like normal. Finally, we have what’s
known as mesh networks. Mesh networks are kind
of like ad-hoc networks, since lots of the devices communicate with
each other wirelessly, forming a mesh. If you were to draw lines for
all the links between all the nodes, most mesh networks you’ll run into are
made up of only wireless access points and will still be connected
to a wired network. This kind of network let’s
you deploy more access points to the mesh without having to
run a cable to each of them. With this kind of setup, you can
really increase the performance and range of a wireless network.

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