Wi-Fi Issues Caused by Wired Problems

The Most Common Wi-Fi issues caused by wired problems.

Wi-Fi gets blamed for nearly every networking problem. But after doing some troubleshooting the issue comes from the wired infrastructure.We take a look at four common issues that look like Wi-Fi issues but are really wired problems. There may be below common Wi-Fi issues caused by wired problems.

Switch Ports

Common problems occur during switch provisioning. Your installer connects the AP to the switch but it’s not working properly. The main IT person is not there on-site and users are beginning to get frustrated. It is possible the AP was plugged into the wrong port but sometimes it’s not easy to trace the cable.

Power over Ethernet

You may have seen the LED on an AP not being on. Or maybe the AP is in a reboot cycle. It could be connected but not serving any clients. This could possibly be a PoE problem. Either the AP is not receiving PoE because the switch doesn’t support it or PoE is disabled at the switch port.

Link Negotiation

The users may experience slow Wi-Fi and after troubleshooting everything, including the RF, but wasn’t able to identify a problem. If we had started at the physical layer first, we may have seen the issue right away. How many times we have come across bad cables where the APs negotiate at poor speeds. Sometimes even at half duplex!

VLAN

We may have a Wi-Fi test showing DHCP was not successful. As part of troubleshooting, you might not know if the wireless device is able to see the SSID, associate, pass authentication, get DHCP, etc.

Is there a missing VLAN somewhere? Maybe we have the incorrect VLAN.

We can solve theses issues. Testing on every steps like restarting the device and wait for the time to get stable the lights.

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