Kevin | Network Engineer

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3 troubleshooting mistakes you don’t want to make!

If I could go back in time, this is the first thing I would teach my past self. Doing these will save you a ton of time and headaches trouble shooting the most common network and IT issues. #networktroubleshooting #howtotroubleshoot #technology #informationtechnology #guide

2025/2/2 Edited to

Troubleshooting effectively in IT and networking can be challenging, especially for those new to the field. Often, the simplest mistakes—like skipping essential checks—can lead to significant delays. The first mistake is skipping Layer 1 checks, which include verifying all physical connections and power supply to devices. Many network issues stem from basic connectivity problems, so ensure that cables are correctly plugged in and functioning. The second mistake is not utilizing a layered approach when troubleshooting. Following a structured method based on the OSI model is crucial for isolating issues effectively. This means examining each layer systematically—from the physical Layer 1 to the application Layer 7—before diving into complex diagnostics. Start with the basics; make sure devices are connected before troubleshooting further up the stack. Finally, many overlook the importance of IP addressing, which can lead to misconfigured settings that disrupt network operations. It's essential to verify that the correct IP addresses, subnet masks, and default gateways are set for each device. Regularly checking these settings can save considerable time during troubleshooting. Adopting these approaches not only streamlines the troubleshooting process but also builds a strong foundation for new network administrators.

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