The second step of LAN successful troubleshooting is recreating the problem known. If you’re already identity the LAN on the network, now you should ask yourself if you understand the symptoms, and verify the reported problem yourself if possible. All of network problems are much easier to solve if they can be recreated on demand. [...]

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Basically, to be successful in LAN troubleshooting you must focus on 8 ways:

Identify the exact issue or problem.
Recreate the problem if possible.
Localize and Isolate the cause.
Formulate a plan for solving the problem.
Implement the plan.
Test to verify that the problem has been resolved.
Document the problem and solution.
Provide feedback to [...]

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Once you have collected data about the symptoms, you will then need to conduct tests to validate or eliminate what you think the problems could be. If adequate symptoms are known, perhaps the evaluation process is mental and does not involve the network or physical testing at all. Once you think you understand the problem, [...]

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Analyze the network as a whole rather than in a piecemeal fashion. One technician following a logical sequence will usually be more successful than a team of technicians, each with their own theories and methods for troubleshooting.
The logical technician asks the user questions, runs diagnostics, and thoroughly collects information. In a short time, he or [...]

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The rocket scientist analyzes and re-analyzes the situation until the exact cause at the root of the problem has been identified and corrected with surgical precision. This sometimes requires taking a high-end protocol analyzer and collecting a huge sample (megabytes) of the network traffic while the problem is present and inspecting it in minute detail. [...]

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The key to successful troubleshooting is for the technician to know how the network functions under normal conditions. This enables the technician to recognize abnormal operation quickly.

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Did you hear a story about how several blindfolded people were tasked with describing an elephant? All disagreed with the others because the only information they had was what each experienced directly. The person touching the trunk described how an elephant was like a large snake. The person touching the leg described how an elephant [...]

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Asterisk is PBX open-source platform for telecommunications. Asterisk is flexible system, because it can be use on different operating systems like Windows, Linux, Mac OS X, Open BSD, etc. Only the software as a base. Asterisk is with features such as high-end, IVR, voicemail, automatic call distribution, it is highly programmable and capable of VoIP [...]

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“when the only tool you have is a hammer, everything begins to look like a nail.”
That first saying as an example can be interpreted in many ways. One way to interpret this is that the user was able to bludgeon the network hard and long enough that the marginal or failed element was eliminated in [...]

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Local area networks are integral to the operation of many businesses today. Network engineers and network technicians have taken on the vital role of keeping these business-critical networks up and running. This guide provides these frontline network troubleshooters with practical advice on how to maintain LANs and solve common problems.

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