From the course: Troubleshooting Network Connectivity
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DNS/IP addressing issues
From the course: Troubleshooting Network Connectivity
DNS/IP addressing issues
- [Instructor] Some of the quirkiest network issues can result from problems with DNS. Normally it starts with a call from a user saying, "I can't get to the Internet." I have a few questions I usually ask. The first is, how long have you had issues? This will determine if they just moved in to this apartment or cubicle, and if it ever worked from here or if they've been in the same spot for a year and it just now broke. It should also allow correlations like did this report coincide with a power flicker or maintenance that was just performed? My next question is, what are the symptoms? What is it do when you open your browser and navigate to resources? Users will generally report back that they can't access email and when they open their browser, the page cannot be displayed. At this point, it could really be anything. Starting at the beginning, I'll have the user check their network setting via CLI with ipconfig/all I'll verify that their IP address is valid. If it is valid, I'll…
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