What is Network Congestion? Causes, Effects & How It’s Managed

Now visualize driving on a multilane highway during peak hours. It becomes impossible for all vehicles to flow when too many try to utilize the same space at the same time. This is what the digital world witnesses. To learn Why Do Networks Experience Traffic, one needs to understand what is network congestion first.

Common Causes of Traffic in the Digital World

In essence, a network is overloaded with traffic when the number of data packets coming into the network surpasses the network’s overall capacity to process them. Such an Internet traffic overload usually occurs due to the following:

• Limited Bandwidth

  In case a particular Internet package allows a certain speed, but it gets exceeded by the users due to heavy gaming or 4K stream watching, data inevitably gets backed up.

• Too Many Connected Devices

  It includes all the smartphones, TVs, laptops, and any other smart devices connected to the same network.

• Old Hardware

  It means that old routers or switches simply cannot cope with current traffic because they lack the necessary hardware to do that.

This is how the main factors responsible for the network’s congestion should be identified first.

The Visible Impact on the End User

When a network gets overloaded, the data packets need to form a line. If the line is full, then there is nothing else to do other than to drop the packet. The result is a bottleneck, which is responsible for causing several frustrations to the user:

• Latency or Lag: There is an excessive delay from when a task is performed to when the results show up.
• Packet Loss: Jittery audio, missing voices, and video distortion during online live conferences.
• Buffering Problems: The videos get interrupted as the system catches up with the data packets.

Also Read: Ways to Improve Network Security for Your Business

Traffic Flow Control by the Systems

Networking engineers do not just relax when the networks start to collapse; they make use of highly sophisticated congestion control technologies.

Instead of letting the information stream freely, network management systems employ highly intelligent approaches:

• Traffic Shaping: Prioritizing vital time-sensitive data (e.g., live video chat) over less important ones (e.g., large background software installation).
• Active Queue Management: Purposefully discarding some small share of information at the beginning of the process in order to indicate to the sending devices that they have to reduce transmission speed.
• Load Balancing: Protocols that redirect information from overloaded routers to unused routes.

Conclusion

An internet traffic overload for a short period of time is an inevitable consequence of the development of digitalization. Yet, thanks to determining the network delay causes and using congestion control technologies, network engineers can handle the process easily.