interest in the marketplace existed for HSTR products and the technology
Many home networks use the star topology. A
star network features a central connection
point called a "hub" that may be a hub, switch
or router. Devices typically connect to the hub
with Unshielded Twisted Pair (UTP) Ethernet.
Compared to the bus topology, a star network
generally requires more cable, but a failure in
any star network cable will only take down one computer's network access
and not the entire LAN. (If the hub fails, however, the entire network also
Tree topologies integrate multiple star
topologies together onto a bus. In its simplest
form, only hub devices connect directly to the
tree bus, and each hub functions as the "root"
of a tree of devices. This bus/star hybrid
approach supports future expandability of the
network much better than a bus (limited in the
number of devices due to the broadcast traffic it generates) or a star
(limited by the number of hub connection points) alone.
Mesh topologies involve the concept of routes.
Unlike each of the previous topologies, messages
sent on a mesh network can take any of several
possible paths from source to destination. (Recall
that even in a ring, although two cable paths exist,
messages can only travel in one direction.) Some
WANs, most notably the Internet, employ mesh routing. A mesh network
in which every device connects to every other is called a full mesh. As
shown in the illustration below, partial mesh networks also exist in which
some devices connect only indirectly to others.