What is Network Redundancy and What are its Benefits?

Imagine having a business that is highly reliable, with network availability and connectivity with the Internet and within its various locations, then suddenly an unplanned network outages occur that will surely affect the revenue of that business in a bad way. Network redundancy address that kind of curveball wherein the network is designed to quickly react and restore network services once a serious downtime happens.

Network redundancy provides multiple fallback plans in case a network failure occurs to keep services up and valuable data flowing through the network. Meaning, redundant networks are synonymous with a reliable network that will greatly benefit the customers.

Having network redundancy implemented in the network also means that various network devices and technologies are in place, which means having redundancy also means having a complex network.

The more complex the design of the network means that it is harder to understand, and it also increases the risk of human errors and bugs on the software that may cause new modes of failure. That is why it is very important to plan, design, and implement network redundancy because once it is done, the benefits outweigh the risks.


Network Redundancy Types

Designing a redundant network requires a deep understanding of how to address various types of challenges that the task requires. Below are several network infrastructure design considerations that are taken into account to establish network redundancy systems that act as a failsafe to ensure continuity of services:


Pathway Redundancy

This redundancy emphasizes several alternate network paths for the information within the network. Basically ensuring that if a link is down, there is an alternative way of reaching the destination by means of established alternate routes, which is being done by the network devices ensuring network availability.


Power Redundancy

Most network devices are dependent on electric power for them to function. That is why having a backup power source in the location of your network devices may it be a simple equipment room or a high-end data center, is a must. This ensures that the worst-case scenario of having a power outage can be addressed by power backup systems, like having a generator on-site or a UPS, to make sure that there is continuity of network service.


Geographic Redundancy

This redundancy ensures that if ever the main data center encounters a severe outage like a city-wide blackout that lasts longer than the power backup systems can provide an alternate data center which is in a different location from the affected one can take over to ensure the business continuity.


Data Redundancy

Data redundancy is usually present together with at least one of the redundancy types above because the data is considered as one of the most important assets of a business or organization. That is why having backup data either on a separate backup server or cloud is needed to make sure that data is readily available despite any untoward downtime.


Benefits of Network Redundancy

Putting a network contingency in place enables the business to prevent revenue loss caused by unplanned outages. Do take note that even if the downtimes are unplanned, they can be mitigated with proactive solutions. Here are several benefits of having extensive backup systems in your entire network:



24/7 network availability is an obvious advantage of implementing redundant networks. This is important to customers who rely upon 24-hour services such as hospitals and banks.



IT security, in general, relies on redundancy to be qualified as effective. Redundant networks allow us to have state-of-the-art security measures in place and the backing of successful compliance audits. With redundant networks, downtime doesn’t leave your information vulnerable as team members work to isolate and resolve the security concern.



Being able to have multiple paths to access the same location means that it will be less likely that you will experience slow connections.


Business Continuity

The most important benefit of them all is keeping the business running and serving its customers. No matter what catastrophe occurs, the network should be able to serve its customers, whether it be a major disaster or a simple inconvenience.

Download our Free CCNA Study Guide PDF for complete notes on all the CCNA 200-301 exam topics in one book.

We recommend the Cisco CCNA Gold Bootcamp as your main CCNA training course. It’s the highest rated Cisco course online with an average rating of 4.8 from over 30,000 public reviews and is the gold standard in CCNA training: