Saturday, September 12, 2009

Category of Topology


There are four types of Network Topologies:

Mesh Topology

- Every device has a dedicated point, a point link to every other device.

Advantage:
- Eliminating traffic problem
- This topology is robust

Disadvantage:
- Amount of cabling and the number of I/O port is required
-Installation and reconnection are difficult.

Star Topology

- Each device has a directed point to point link only to a central controller (HUB/Switch)

Advantage:

- Does not allow direct between devices
- Less expensive than mesh topology
- Easy to reconfigure and install
- It is robust


Bus Topology

- One long cable act as backbone to link all the device in a network and energy is transformed into heat.

Advantage

-Ease of installation

Disadvantage

-Difficult reconnection and fault isolation

Ring Topology

- Dedicated point to point connection only with two devices on the other side of it. A signal is passed along the ring in one direction.

Advantage:

- Easy to install and reconfigure

Disadvantage:

- Unidirection traffic a break in the ring can disable the entire network