PoE & Wi-Fi
When Wi-Fi problems are actually cabling problems
Symptoms that point to the copper plant, quick checks before a WLAN survey, and when to retest AP links.
Not every “Wi-Fi is slow” ticket is RF. Some are failed or marginal permanent links, wrong category, or PoE instability on the AP uplink.
Symptoms that suggest copper
- Single AP flaps while neighbours are fine
- PoE devices drop under load
- New APs on old Cat5e runs in long channels
- Patching “fixes” that move the fault with the cord
Quick checks
- Confirm outlet ↔ panel ID mapping
- Swap known-good patch cords
- Retest the permanent link to the correct category limits
- Only then invest in a full WLAN survey
Boundary
Cabling evidence narrows the search. It does not replace RF expertise.