Wi-Fi troubleshooting

No more stumbling around in the fog – thanks to a cloud:
The LMC's WLAN anomaly detection.

Valid data for error detection and structured elimination of errors

Modern network management from the cloud

Game over: The time-wasting guessing game “Find the Wi-Fi error” is history.

Yes, the propagation of electromagnetic waves follows the principle of cause and effect and is therefore calculable and predictable. In theory. Because the effect of waves bouncing around offices at 2.4 or 5 Gigahertz puts an end to physical predictability. “Hey, something’s wrong with the Wi-Fi,” tops the hit list of the most feared messages arriving at IT departments. Pure chaos is not alone in determining the propagation of Wi-Fi signals. Complexity scientists speak of deterministic chaos, rather like what happens to racked-up billiard balls at the start of a game when they are hit by a speeding cue ball. The paths of the balls can be calculated from Newtonian mechanics. In theory.

Rather like Wi-Fi practice: Radio networks on the same channel causing interference, stray Bluetooth signals, a leaky microwave oven, walls, furniture, people moving around, or even a full cup of coffee standing in the signal path. Any number of causes with effects that are difficult to assess. What comes next can be described as “empirical procedure”, to put it kindly. What is in fact little more than trial and error – change something, see what happens. And that until – hopefully, and for whatever reason – things improve. Or a spontaneous purchase is made – the more, the better – and an actually superfluous access point is installed. And this Wi-Fi guessing game isn't just a side hustle. According to a study (CWNA Certified Wireless Network Administrator Study Guide) this burns up an average of 40 percent of IT administrators’ working time.

But the stumbling around in the fog has come to an end thanks, of all things, to a cloud. Cloud-controlled network management with a good portion of Wi-Fi intelligence cannot cure frozen video streams or smooth out choppy Voice-over-Wi-Fi telephone calls at the push of a button. But it does provide meaningful, up-to-date data from the Wi-Fi components and, based on this, proposes solutions to get the data traffic back into shape. Read here how the Wi-Fi functions of the LANCOM Management Cloud put an end to guessing games and pave the way for structured problem solving.

WLAN anomaly detection

The best complaints are those that never happen. With its WLAN anomaly detection, the LANCOM Management Cloud actually fixes errors even before the hotline rings.

Notifications on Wi-Fi anomalies

The WLAN anomaly detection has found a condition that is not as it should be: Although all of the access points are online – otherwise a red alert would have appeared – one of them has an inconsistency. If desired, the cloud can also send these alerts by e-mail.

List view with detailed data

After clicking on the orange alert button, a list of the affected devices is displayed. With a further click on the arrow symbol next to the warning triangle, the IT administrator sees what's going on: It has exceeded the preset maximum channel load. And the anomaly detection not only identifies the problem and when it occurred, it also presents potential solutions.

Adequate solutions

Anomaly detection not only names the problem and when it occurred, but also presents possible causes and suggested solutions.

Ability to act quickly

In this case, the IT manager opts for a 4-channel scheme for the Wi-Fi instead of the previous setting of 3 channels. This relieves the load on the radio field to get the Wi-Fi up and running again, before the first noticeable connection problems even occur.

Clarity instead of guesswork: A boon for all IT admins

The preset limits for triggering the alert messages can be adjusted at any time. This also applies to the other metrics monitored by the anomaly detection: Apart from the channel load, these are noise, transmission quality, the maximum number of concurrent Wi-Fi users, and the availability of the 5-GHz channel, i.e. whether the frequency band is impaired by radar signals, for example from weather services or the military. 

Thanks to the historical view, interference events can be reconstructed almost like a detective, and remedial action can be taken in a targeted manner:

Yesterday at 9:34 AM there was sudden interference on 2.4 GHz. Talking to the janitor reveals the troublemaker: A microwave oven was recently placed in the communal kitchen: it is past its prime and obviously has gaps in its shielding. So get rid of the troublemaker and replace it with an intact device.

Every day at 2.30 PM the access point for the visitor hotspot reports an overload. The result of quick search: The trainees take their afternoon break and the social media and streaming activity skyrockets. Solution: the available bandwidth of the hotspot could be reduced or, more elegant and effective, certain applications could be blocked on this hotspot network by using a firewall filter.

Welcome to the fact-based world of Wi-Fi troubleshooting in the LANCOM Management Cloud, with not much trial, even fewer errors, and a range of quick and workable solutions.

More about the technical side of anomaly detection

Would you like to have a deeper insight into the functions and possible applications of WLAN anomaly detection in the LANCOM Management Cloud?

Then feel free to visit our technology page!

There you can see exactly how anomaly detection works, what metrics are analyzed, and what troubleshooting assistance it offers.

Technology WLAN anomaly detection

Even more shooting support

Now that you have time to focus on the really important and enjoyable parts of your job: Why not read one of our info papers, tech papers or white papers on software-defined / cloud-managed networks!

Besides, the LMC is not your only helper. In our FAQs, tutorials and in our Support Knowledge Base you will find additional answers to your questions as well as tips and tricks for using the LMC:

On the test bench

Take a close look at the WLAN anomaly detection of the LANCOM Management Cloud yourself! In our test system, you can click through the user interface and experience directly how your new suppression fire partner feels.

Request "live view" access

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