NETWORK TROUBLESHOOTING, WITHOUT THE GUESSWORK
Diagnose.
Test. Fix.
Find the likely cause, prove it with the right test, and take the next action. Equipment comes last—not first.
Start with the symptom
Follow evidence-first troubleshooting paths before replacing hardware or buying tools.
Explore →LEARN A TESTRun the right test
Understand what a test proves, what it does not prove, and what result should come next.
Explore →FIND A TOOLBuy only what the job requires
Match capabilities to the actual diagnostic task instead of shopping from generic best-of lists.
Explore →THE NETFIXLAB RULE
Evidence before equipment.
We do not recommend a tester, tracer, switch, cable, or adapter until the troubleshooting path shows why it is needed.