Network Topology

In this post, you have seen Network Topology Information in deeply. Firstly you have seen what is , then meaning of topology. Also with diagram and its type. advantages and disadvantages. This post is going to be very important for you and for those who want to know what network topology is, this post is special. let’s take a look at this post.

What is topology ?

Physical or Logical Arrangement of a network is called as Topology.

What is Network Topology?

A topology provides a different layout to create a network. While connecting computers and other networking devices together to form a network, the user needs to consider the structure, layout and cabling requirements.

There are mainly two types of topologies.

  1.  Physical: Physical Structure of the Network.
  2.  Logical: Data Through the network across devices and how signals perform on the network media.

Network Topology Types

1) Bus Topology

2)Star Topology

3)Ring Topology

4)Tree Topology

5) Mesh Topology –1) Full Mesh Topology

                                 2) Partial Mesh Topology

What is node: Node is a connection point on network for data transmission. It can be a computer or printer or any type of device that is capable of sending and receiving the data over the network.

1)Bus Network topology:

A Bus is the central cable or single coaxial cable. That connects all devices on a local-Area Network (LAN) it is also called backbone.

               This is often used to the main network connections constituting the internet. Bus networks are fairly inexpensive. And are easy to install therefore ideally suitable for small networks. Ethernet systems utilize a Bus topology.

Advantages:

This method makes it easy to connect a computer or device to the central cable, and typically requires less cable than the star Topology Option.

Disadvantage:

1) The entire network shuts down if there is a break in the main cable.

2) It is difficult to identify the cause for the problem if the network shuts down.

Diagram:

2) Star Network Topology:

In a Star Topology system are connected to a central node, called a hub or Switch.

Devices communicate across the network by passing data through the central node.

Advantage:

one Faulty node does not affect the rest of the network.

Disadvantage:

If the central node fails, the entire network becomes unusable.

Diagram :

3) Ring Network Topology:

Local Area Network whose topology is in the form of a ring. That is, all the nodes are connected in a closed loop. Data travels through many points before reaching its destination which makes it an inefficient network in comparison to a Star Network.

Advantage:

Ring network scan span larger distances than other types of network (Bus) because each node regenerates messages as they pass through it.

Disadvantage:

If the central node fails. The entire network becomes unusable.

Diagram:

4) Tree Topology:

This is a hybrid Topology that combines characteristics of both the linear bus and star topologies. in a tree network, groups of star-configured network are connecte to a linear Bus backbone cable.

Advantage:

A Tree Topology is a better choice for large computer networks as it ‘divides’ the whole network into easily manageable parts.

Disadvantage:

1) The dependency of the whole network is on a central hub or  switch.

2) Failure of the central hub or switch can cripple the whole network.

Diagram:

Network topology

5) Mesh Topology:

In a Mesh network, devices are connect with many Redundant interconnections between network nodes.

      In a true Mesh Topology every node has a link to another node in the network.

There are two types of Mesh Topologies

1)Full Mesh Topology

2)Partial Mesh Topology

1)Full Mesh Topology:

Every node has a circuit joined to every other node in a network.

Through this incurs a high execution cost. It yields the best measure of idleness or redundancy, which can support diversion of system activity to alternate Switch, even if by chance, any one of those nodes falls flat.

        A full mesh topology is typically deployed in a backbone network.

Diagram:

What is network topology

2)Partial Mesh Topology:

This topology comparatively costs less to actualize but also yields less redundancy. The arrangement as the term indicates partial a few nodes are configured in a full mesh while other nodes are just associate with maybe a couple of nodes in the network.

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