Computer Network Topology

etwork topology is the geometric relationship between explaining the basic elements making up the network, the nodes, links, and station. Kinds of network topology there are 5 kinds of Star Topology, Ring Topology, Topology Bush, Mesh Topology, Tree Topology. All this is a Computer Network Topology.

The star topology is a form of network topology in the form of the convergence of the central node to each node or user. Network topologies including star network topology with high costs.

Excess Star Topology

Damage to one channel will affect only the channel network and the station adrift.

Including high-level security.

Resistant to network traffic and the reduction sibuk.Penambahan station can be done easily.

Shortage

If the central node is destroyed, then the entire circuit will stop,

Ring topology is the topology of the network form a series of dots, each connected to two other points, so as to form a circular path to form a ring. In the ring topology, communication data can be compromised if a single point of disorder. FDDI network to anticipate this weakness by sending the data clockwise and counter-clockwise simultaneously.

Excess ring topology

Efficient cable

There would be a collision of data transmission (collision), because at one time only one node can transmit data

Weakness of the ring topology

Error-sensitive, so if there is interference in a node resulted in disruption of the entire network.

Developing a network of more rigid

Difficult to detect damage

Collision can occur [two data packets mixed] required special handling and management

Has the characteristic features of bus topology:

A. Old technology, connected by a cable in a row

2. Does not require active equipment to connect the terminal / computer

3. Greatly affect the performance of the communication between computers, because it can only be used by a computer

4. Wires "cut" and use BNC connectors of type T

5. Threshold of 50 ohm cable connectors mounted

6. If the cable is broken then other computers can not communicate with other

7. 8 hard to do the tracking problem. Discontinue support.

Bus topology advantages is the development of a network or adding new workstations can be done easily without disturbing the other workstations.

The bus topology is a weakness if there is interference in the cable along the center of the whole network will be impaired.

Mesh topology is a form of connection between devices where each device is connected directly to other devices on the network. As a result, the mesh topology each device can communicate directly with the target device (dedicated link).

Mesh topology advantages are:

Relationship links dedicated to ensure the data is sent directly to the destination computer without having to go through another computer so it can more quickly because one link is used specifically to communicate with the destination computer only (not used beramai-ramai/sharing).

Robust properties, namely the event of disturbances in connection with computer A computer B because damage to the cable connections (links) between A and B, then the disorder will not affect a computer's connection to other computers.

Privacy and security in mesh topology is more secure, because the communication that occurs between the two computers will not be accessible by other computers.

Facilitate the process of identifying problems in the event of damage to connections between computers.

However, the mesh topology is not without its flaws. Some deficiencies can be noted that:

Requires a lot of wiring and Port I / O. more and more computers on the mesh topology is needed more and more wired links and port I / O (see calculation formula and the Port needs wired).

It is at once also indicate that the topology of this type * Because every computer must be connected directly to another computer then the installation and configuration becomes more difficult.

The number of cables used are also indicated a possible need for space in the room where the computers are located.

The tree topology is a combination of the characteristics of the star topology and bus topology. This topology consists of a collection of star topology are connected in a bus topology as the backbone. Computers connected to the hub, while the other hub on the lines connecting the spine or backbone.