Quality in WiFi networks
Capacity measurements (throughput)
We are leaders in Spain in measuring the quality of WiFi networks. We have our own methodology and instrumentation for the verification of service levels, both in customer facilities and in our own laboratory.
Our instrumentation and measurement protocols (compatible TR-398 from the Broadband Forum) for the verification of WiFi networks have been used to measure service levels (SLA) in thousands of projects throughout the national geography.
So, for example, in the attached graph we can see how the traffic of an AP is reduced depending on the number of WiFi stations connected. The "green" equipment is of better quality.
In the lower left graph we have the traffic in the air by virtual WiFi stations
We have a laboratory in which measurements can be made with our instrumentation and we also make available to our distributors / customers our portable equipment for field measurements.
Capability Testing Methodology
To carry out this type of measurement, we normally use equipment from Candela Technologies. This instrumentation allows the elaboration of tests with multiple equipments to simulate the scenarios in the most realistic way possible.
Its main SW module is called LANforge FIRE, this subsystem allows to generate and receive several network protocols. It is used to create load on a network under test. It reports statistics such as sent and received packets, latency, packet loss and many other network features. The system SW (LANforge) supports real protocols and TCP/UDP connections, so it can generate load against web servers, VOIP gateways, firewalls, load balancers and many other network components. LANforge can virtualize network adapters and clients (WiFi or wired) are viewed by the access point as stand-alone devices.
When it comes to simulating wireless clients, the system uses a small number of radio cards with multiple clients. It is important to point out that the access point sees these clients as different and unique devices, since both the firmware logic and the middle and upper level access protocols are executed individually for each of them. For example, an analysis of the controller log or access point would not see any difference in behavior over other devices or conventional workstations..
Each team can create up to 64 virtual clients on each of the Wireless cards, with unique MAC address, IP address, routing table and following the level 2 and 3 protocols in the same way as a physical device.
The LANforge system consists of a manager and one or more traffic-generating machines (resources). The resources are connected to the manager through a management network. The devices under test are connected to ports that are not LANforge system administration ports, either wired or wireless. The graphical user interface can run on LANforge machines or on a PC or laptop by connecting to the manager.
LANforge has the capacity to record measurements, visualize and generate reports from them. All resources communicate their statistics to the manager continuously and are displayed in real time in the user interface (GUI).
A very useful view in order to guarantee the effectiveness of the test protocols is the one that gives us in real time a very detailed information of the state of all the clients (levels of radio signals, association, channel, rates of sending / reception of data ...)
Here you can see some photos of the equipment we use.
More information on the use of this equipment for WiFi measurements is available on the Candela website
- Experts in the study and design of WiFi networks for maximum performance.
- Experience with the latest ac / ax technologies (WiFi 6)
- Tools for the calculation of coverage in all types of situations.
- Verification of designs with your own measurements in the field.
- Possibility of carrying out tests with hundreds or thousands of WiFi clients.
- Verifications in the field or in our laboratory.
- Services for the comparison of WiFi providers.
- Services for SLA measurements or certification of facilities.
In addition, our test protocols may also include WiFi security verification.
Here you can see, for example, a MITM (man in the middle) attack to audit an AP. We can see how with the first AP we succeed with the attack, we can "steal" customers and see all their traffic to the internet. In the second AP the attack is not successful because this equipment has an anomaly detection system and false access points.
Because not all WiFis are the same!