Network Topologies

Network Topologies

Network topology defines the structure of the network.

One part of the topology definition is the physical topology, which is the actual layout of the wire or media.

The other part is the logical topology,which defines how the media is accessed by the hosts for sending data.

Bus Topology

*A bus topology uses a single backbone cable that is terminated at both ends.

*All the hosts connect directly to this backbone.

 Ring Topology

* A ring topology connects one host to the next and the last host to the first.

* This creates a physical ring of cable.

Star Topology
 * A star topology connects all cables to a central point of concentration.  

 Extended Star Topology

* An extended star topology links individual stars together by connecting the hubs and/or switches.This topology can extend the scope and coverage of the network.  

Mesh Topology

* A mesh topology is implemented to provide as much protection as possible from interruption of service.

* Each host has its own connections to all other hosts.

* Although the Internet has multiple paths to any one location, it does not adopt the full mesh topology.

 Physical and Logical Topology