What are the basic troubleshooting steps for network problems?

Question

Accepted Answer

1) Identify the problem, 2) establish a theory of probable causes, 3) test the theory, 4) establish and implement a plan of action, 5) verify the solution and add preventive measures, 6) document findings, actions, and outcomes.
Basic Troubleshooting Approaches:

* The six-step cycle: identify → theory → test → plan & implement → verify → document. *
A systematic troubleshooting process follows these steps:

Step
Action

1. Identify the Problem
First step in troubleshooting. Although tools can be used, conversation with the user is often very helpful.

2. Establish a Theory of Probable Causes
After identifying the problem, establish a theory of probable causes. This yields more than a few probable causes.

3. Test the Theory to Determine Cause
Based on probable causes, test your theories to determine which one is the cause. A technician may apply a quick fix. If quick fix doesn't work, you might need research.

4. Establish a Plan of Action and Implement
After determining exact cause, establish a plan of action to resolve the problem and implement the solution.

5. Verify Solution and Implement Preventive Measures
After correcting the problem, verify full functionality. Implement preventive measures if applicable.

6. Document Findings, Actions, and Outcomes
In the final step, document your findings, actions, and outcomes. Very important for future reference.

Go deeper:

Wikipedia — Troubleshooting — the general logic of hypothesise-test-eliminate, including the half-splitting technique for narrowing a fault fast.

Step	Action
1. Identify the Problem	First step in troubleshooting. Although tools can be used, conversation with the user is often very helpful.
2. Establish a Theory of Probable Causes	After identifying the problem, establish a theory of probable causes. This yields more than a few probable causes.
3. Test the Theory to Determine Cause	Based on probable causes, test your theories to determine which one is the cause. A technician may apply a quick fix. If quick fix doesn't work, you might need research.
4. Establish a Plan of Action and Implement	After determining exact cause, establish a plan of action to resolve the problem and implement the solution.
5. Verify Solution and Implement Preventive Measures	After correcting the problem, verify full functionality. Implement preventive measures if applicable.
6. Document Findings, Actions, and Outcomes	In the final step, document your findings, actions, and outcomes. Very important for future reference.