Top challenges facing network engineers

Poor network performance is the bane of a network engineer’s life – and we’re not just talking about slow networks. Although speed is important, so is reliability. Engineers need networks that can handle spikes in traffic and provide failovers when systems go down. Active-active network architecture is one solution, but it requires the right infrastructure to support it.

As the number of connected devices grows, so do the potential points of failure. Scalability becomes critical, and engineers must ensure networks can handle increased demand without compromising performance. Additionally, as networks expand, security risks multiply, requiring constant vigilance and robust defences.

Network perimeters aren’t as clear as they once were, meaning many risks are now outside the control of the network engineer. Threats can enter a network via something as simple as an employee responding to a phishing email. While encryption helps protect a network, it can also make it harder to monitor network activity, making monitoring and managing a network more complex. 

Mis-labelled servers or switches can cause a real headache for engineers, particularly on larger networks or in data centres. Sometimes the only information an engineer has is the IP address (which isn’t written on the device) or the serial number (which is often covered by other items in the rack). This could result in costly mistakes such as replacing a drive in the wrong server, for example.

Without up-to-date backups of device configurations, recovering from failures or rolling back changes can be nearly impossible. Ensuring backups are regularly tested and functional is a time-consuming but critical task for network engineers.

Networks evolve rapidly, with frequent updates, new services, and architectural changes. However, these changes are not always reflected in documentation, leading to inefficiencies and wasted time when troubleshooting or onboarding new engineers.

While multi-vendor networks and multi-cloud architectures offer flexibility and growth opportunities, they also introduce complexity. Engineers must navigate different interfaces, commands, and protocols, often requiring additional training or skillsets to manage these environments effectively.

Delaying hardware upgrades due to budget constraints can lead to compatibility issues between older and newer devices. These delays often result in higher costs down the line, as engineers are forced to implement workarounds or replace outdated equipment entirely.

With the increasing demand for digital services, traffic spikes are becoming more frequent and unpredictable. Engineers must ensure networks can handle these surges without compromising performance, often requiring advanced load balancing and traffic management solutions.

As new technologies like AI, machine learning, and IoT emerge, engineers are under pressure to adopt these innovations while maintaining network stability. Striking the right balance between embracing new tools and ensuring reliable operations is a constant challenge.