Network Topology and its types

This can be defined as a physical map or blue print of the network. That is schematic arrangements of different nodes present in the network.

There are five common topologies:

  • Bus topology
  • Ring topology
  • Mesh topology
  • Star topology
  • Hybrid topology

Bus topology:

This is the most common way of designing out network where each nodes present in the network are connected to common cable media called bus.

Disadvantages:

  • Data collision when network traffic is high
  • Single point of failure as cable fails entire system will go down.
  • Not secure as data tapping can be done.

Ring topology:

In this each devices is connected to each other in a ring fashion that is back to back having two neighbors.

This topology used token ring to pass the information and all the message travel through a ring in same direction.

Disadvantage:

  • Single point of failure
  • Unidirectional traffic flow

Mesh Topology:

In this each devices is connected to each other.

Advantages:

  • More secure as each is having its own connection with other.
  • No single point of failure.

Disadvantages:

  • It is expensive.
  • It is practically impossible for larger network.
  • The number of connection grows exponentially as number of nodes increases that is c= n * (n-1)/2

This is of again two types:

  • Partial mesh
  • Full mesh

Star topology:

In this each devices is connected to central node called switch or hub. It is hub and spoke technology.

Disadvantages:

  • Single point of failure.

Hybrid Topology:

This is lately used which is combination of two or more topologies.

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Categories: Networking

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