Hopefully someone else has also experienced this or can shed some light on the behavior I’m seeing. I currently have RB760iGS (Hex S) running in a controlled test environment. Port 5 PoE output is enabled and is powering a WiFi AP.
When I do a quick reboot or power-off/power-on, the Hex S reboots, but the PoE output does not come back on. If I unplug the Hex S and let it sit for approx. 3 minutes, then plug it back in, it boots up and PoE output works just fine again.
Is this a known issue? It seems to me that a capacitor needs to fully drain (or something similar) before the router is able to bring the PoE output back online. This is a complete wild guess, however
Here’s my update for this issue. Have been advised by support to RMA my original Hex S. It turns out that the initial production of RB760iGS/Hex S has this problem, and also specifically will tell you that PoE “auto-on” setting is not supported should you try to enable it on the interface.
I’ve purchased a new Hex S which now does support the PoE auto-on setting and also definitely does NOT exhibit my original problem. The PoE output now works consistently when set to “forced on” every time this new Hex S boots, regardless of power loss or what have you.
If you have recently purchased a Hex S that has these PoE problems, and you want the PoE output to work consistently and/or need the PoE auto-on feature, RMA your device. Assuming it’s still under warranty, that is - my RMA was denied since I bought it well over a year ago. Now I’m stuck with the bad router, but will simply use it for experiments or testing as it works OK besides the PoE problems.
Note that I did disassemble both of these routers for inspection and there are obvious changes to the hardware to correct the PoE problems - most notably a completely different relay, capacitor and some minor circuit design changes.
