Dear @kissenger,

What do I need to do to configure the EAP to work with the network switch?

The TL-SG1005P is an unmanaged PoE switch, no configuration required.

But when I use a PoE enabled network switch (which I bought for the purpose), I cannot access the EAP225 on the network (SSID shows, can connect but 'No internet, secured', cannot access tplinkeap.net).  On the network switch, the PoE light for the connected port lights up, but not the networking light.

Please confirm that you are using the originally provided power adapter (Output: 48VDC / 1.25A) to power up the SG1005P switch. And try plugging the power adapter of the SG1005P switch to another power outlet for checking.

FYI, here is another post that discussed a similar issue and found it's the power wiring issue. https://community.tp-link.com/en/business/forum/topic/225892

Dear @gahanpa,

gahanpa wrote

Hi, Is it still working? i have the exact same problem. Originally i used the supplied passive POE device but the LAN side of the EAP 225 kept having intermittent drop outs. Not cable related as i put a laptop on the far end of the cable and had no outages. So now i have TL-SG1005P to supply POE .. the EAP 225 boots up (solid green light) but doesn't have any network access on the LAN side (and doesn't give any useable IP to wireless clients ... under-whelmed by the EAP 225 at this point as it's not delivering a reliable connection LAN side :-(

I saw a similar issue that the PoE switch can power up the device well but no LAN connection, and it turned out to be the power outlet issue, check this post for details.

I think you may also check the power outlet, perhaps try changing another power outlet, or using a shorter cable for tests.