Observe how intermittent wifi can can come from a multitude of sources. Understand how limited spectrum in the 2.4Ghz range can impact service. Explore the 5Ghz range as an alternative to the congested 2.4 frequency range. Discover the core mechanics of wifi distribution that make it a contention based medium.
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- [Narrator] Few things can be as frustrating or problematic…as flaky wireless.…Usually it comes in as a report from the user saying,…"the wireless is terrible," but by the time I get there,…everything is fine.…This could be any of a very large number of issues.…I usually prefer to start at the physical layer…and work my way up the stack.…The physical layer can be really tricky…depending on the environment I'm running in.…Occasionally, I'll be in an environment out of my control.…
Think an office complex.…I generally can't dictate what other tenants…are allowed to do with their wireless,…which means they could be the source of my issues.…All of my APs will be in some sort of…network monitoring system, looking for connectivity failures…or high CPU conditions on the device.…If I've ruled out issues with the access point itself,…I'm going to look for interference issues.…Interference usually comes into play with 2.4 gigahertz…networks, though they can affect 5 gigahertz networks also.…
2.4 is especially susceptible because it only has…
Even if you're rusty on your OSI model knowledge, this course is invaluable if you're having trouble with your network. It offers a clear, practical troubleshooting guide to narrowing down and solving most problems related to network connectivity.
- Troubleshooting the physical layer: POTS, Ethernet, and more
- Troubleshooting the data link layer
- Troubleshooting the network layer
- Troubleshooting the transport layer
- Troubleshooting Wi-Fi
- Troubleshooting proactively