Problem of the Month: DNS Server Performance

Without functioning DNS servers, our web searches would go nowhere.  Why?  The Domain Name System (DNS) is responsible for finding the correct IP addresses for all domain names (google.com or wyebot.com, for example) entered into a web browser.  Once found, the IP addresses are used to communicate with origin servers to allow users to access …

The Difference Between iPerf and Speedtest Network Tests

If there’s one thing we all want more of, it’s fast internet.  In fact, speed is one of the most important things used to measure network performance. So, how do you test it? What is commonly referred to as speed, is often technically called throughput. Throughput tells you how much data was “effectively” transferred between …

Problem of the Week: How to Train New Network Technicians Without Losing Time for Other Tasks

On the job training is important for any position, but perhaps none more so than for new network technicians. After all, the functioning of your network and success is dependent upon hands-on experience with setup and installation, troubleshooting, and repair. Training new technicians often presents novel challenges and takes current critical people away from the …

Problem of the Week: Understanding Airtime Utilization

What do we mean by Airtime Utilization?  Free airtime describes how much time is available on a channel for data transmissions.  Any time a device communicates with another device or an access point (AP) it uses airtime. Airtime Utilization is a per-channel statistic that defines what percentage of the channel is currently being used, and …

Problem of the Week: Are Site Surveys the Best Investment?

Are you familiar with site surveys?  You probably, and should have, had one when your wireless network was installed, but you might not have thought about it since.  Site surveys determine exactly where access points (APs) should be placed for optimum network performance. Those performing the site survey know that physical obstructions (walls, ceilings) and …

How do you troubleshoot last week’s problems?

It’s an unfortunate fact that, frequently, problems are not reported to IT while they are occurring. Maybe this is because IT isn’t onsite, maybe it’s because the problem seemed to resolve itself quickly, or maybe it didn’t seem like a big enough problem to warrant flagging down IT. Whatever the reason, the fact is that …