Guest User 4/14/21 Guest User 4/14/21

MQTT Test Results for Three Popular Brokers

Chris Wellens 8/3/20 Chris Wellens 8/3/20

Product Review: SNMP Testing Tools

Chris Wellens 8/2/20 Chris Wellens 8/2/20

TCP Test Results: FreeBSD

I wanted to explore the Test Suite’s capabilities and ran it against various TCP/IP stack implementations.

Here are the results from a vintage 2016 release of FreeBSD 10. Note that while vintage, this code is found in many embedded systems.

Chris Wellens 7/24/20 Chris Wellens 7/24/20

Are Network Speed Tests Reliable?

It is likely that you have used one of the many network "Speed Tests". Are they trustworthy? Do they really give us a measure of our network provider's service?

Chris Wellens 7/21/20 Chris Wellens 7/21/20

Testing DNS over TLS (DoT) in Iran

The Internet's Domain Name System (DNS) is one of the strong forces that holds the Internet together. There are many forces that wish to control or restrict the Internet. A convenient place to exercise that control is DNS.

Chris Wellens 6/25/20 Chris Wellens 6/25/20

About Latency Claims

Recently we have seen a small flood of articles and promotional materials that make claims about network latency. We find many of those claims to be hyperbolic and sometimes quite misleading. Let us begin, as we almost always will begin, by informally defining the terms "latency" and "jitter".

Chris Wellens 6/19/20 Chris Wellens 6/19/20

Elements of End to End Latency

Some new technologies — 5G and Wi-Fi 6 — may (and probably do) reduce latency. However, there is no such things as zero latency in computer networks.

Chris Wellens 5/5/20 Chris Wellens 5/5/20

Product Review: KMAX Network Emulator

In this review, I cover the aspects of the KMAX Network Emulator most important to me: Throughput, Latency, and Data Integrity. I also inspected the unit itself and its ease-of-use aspects.

Chris Wellens 4/23/19 Chris Wellens 4/23/19

TCP/IP Test Tools Survey

I have surveyed all the available TCP/IP Test Tools for both network operators and application developers. Some test and measure throughput and performance; others generate traffic streams. Some are paid but most are free. Let me know if I have missed one!

Chris Wellens 3/6/19 Chris Wellens 3/6/19

Test Results: TCP/IP on Windows 7

Here are the results of testing the Windows 7 TCP/IP stack using the IWL TCP/IP Tests. These results are from 2016, but they are instructive.

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