View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
  1. What Is
April 4, 2023updated 20 Jan 2024 3:32am

What is topology?

Network topology can be either physical or logical, and there are multiple kinds of it

By Silvia Pellegrino

Topology is a widely used term. In particular, in the networking field, it is used to describe the layout of a computer network.

There are two kinds of networks: physical and logical, and topology can refer to both of them.

3D rendering Conceptual image of internet Computer network, and gadget communication
Network topology helps to define the layout and structure of the network / Image: nmedia/Shutterstock

Definition of topology

The term network topology refers to the arrangements, either physical or logical, of nodes and connections within a network. It could be said that a topology explains how a network is physically connected, and how the information in the network flows logically.

Nodes are situated in a computer network, and they are physical networked devices, such as PCs and printers. These devices, consequently, recognise messages from other nodes and forward them.

In order to access the node, there must be an identification check – such as an IP address. Network topology helps to define the layout and structure of the network, which can have one physical topology, but also multiple logical topologies simultaneously.

There are a few differences between physical and logical topology. The former is the main component of a network, as it connects every node on the network to a central hub.

However, physical topology is how the device is actually interconnected through wires and cables. The latter, on the other hand, is how devices can connect to the user.

Content from our partners
Green for go: Transforming trade in the UK
Manufacturers are switching to personalised customer experience amid fierce competition
How many ends in end-to-end service orchestration?

What are the different topologies?

In a computer network there are six main kinds of physical topologies:

  • Bus topology
  • Ring topology
  • Star topology
  • Mesh topology
  • Tree topology

Bus topology is considered the simplest kind of physical topology, as it requires less cabling than others and it is very cost-efficient. However, it also has a few disadvantages, such as its limitations in the number of nodes that can be connected to it. It requires the nodes to be in a linear order.

In bus topologies, each device connects to a single cable, and they don’t transmit data bi-directionally: the data can only go from one end to the other.

The most widely used type of physical topology is hybrid. It is a computer topology that is a combination of multiple topologies. It has a very complex design and is quite expensive. In a hybrid topology, all topologies are interconnected in such a way to form a hybrid.

Therefore, it can handle a large number of nodes and it is very reliable, if one node fails it won’t affect the whole network. Another disadvantage is that it requires a multi-station access unit (MAU), which is a wiring concentrator (passive hub) used in Token Ring networks. Maus is the core wiring component for building both Token Ring local area networks (LANs) and direct traffic from one station to the next.

Some other types of topologies are:

  • point-to-point topology
  • daisy chain topology

Selecting the right topology can improve both data efficiency and performance, as well as reduce operational costs.

How is network topology used?

One of the principal uses of network topology is to determine and define the configurations of different communication networks, such as computers and radios. In other words, network topology helps the user understand two things:

  • the different elements of the network and where they connect
  • how the elements of the network interact and what can be expected from their performance

Topology is important for businesses, as it allows for a smoother communication system. As such, it can help with noticeable financial savings. Even if not compulsory, topologies help establish better connections in the network. More businesses than ever depend on technology, and networking can get more complicated. This is how and where topology would be used: it gives users a plan, to have better oversight of all the components of the network.

Read more: Could quantum computing make our energy grid sustainable?

Websites in our network
Select and enter your corporate email address Tech Monitor's research, insight and analysis examines the frontiers of digital transformation to help tech leaders navigate the future. Our Changelog newsletter delivers our best work to your inbox every week.
  • CIO
  • CTO
  • CISO
  • CSO
  • CFO
  • CDO
  • CEO
  • Architect Founder
  • MD
  • Director
  • Manager
  • Other
Visit our privacy policy for more information about our services, how New Statesman Media Group may use, process and share your personal data, including information on your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.
THANK YOU