today I noticed a strange phenomenon in my home network: Among other devices, I have a CRS328-24P-4S+ as my central switch, providing PoE for all access points. One of those is a RBcAPGi-5acD2nD. This device was connected to port 8 on the CRS328 and was working perfectly with the PoE setting on auto on. As I rearranged a few things in my network cabinet, I moved the cable going to the cAP ac from port 8 to port 7. After that move, I found that the cAP ac didn’t power on again. Setting PoE for the port to forced on, it immediately sprang to life.
Do any of you have an idea why PoE auto on works on port 8 and not on port 7? All other settings are exactly identical, and in this case I was even using the exact same wires/cables. Moving to port 1, PoE auto on works as well, so what could be “wrong” with port 7 to make it fail when detecting a PoE device? Any ideas will be appreciated. TIA!
I had a similar thing with my CRS328-24P… Connected poe device that received power, unplugged, plugged again - no power. I had to power cycle the port:
/interface/ethernet/poe/power-cycle ether7;
After that it worked again, exactly once.
Support suggested to RMA, but the device is still in operation… The AP is just plugged to another port.
Crazy thing is… I think it was port 7 for me as well…
Yeah, I had tried that as well - but it didn’t help, not even once. Perhaps this is related to some design flaw or “quirk” which somehow affects port 7 more than any other. (I didn’t try all 24 of them, but those ten or twelve that I tried actually worked.)
Anyway, following advice from support, I contacted the dealer that I bought it from as it should still be covered under the MikroTik warranty. Today the dealer informed me that they cannot repair/exchange it so they will refund me. (They do no longer carry MikroTik it seems.) However, meanwhile the price has gone up by almost 200 Euros, so even if I get a refund, I still need to top it up out of my own pocket in order to be able to afford a new device. That sucks. :-/
Short and final update: MikroTik only covers 12 months of warranty - the switch is approx. 18 months old, so I am entirely at the mercy of the dealer mentioned above. As they don’t carry MikroTik anymore, they refuse to exchange/repair the switch, so I’ll have to bite the bullet, collect my money from them, and pay out of my own pocket to get a replacement (which should be a similar cost compared to what MikroTik would need to actually repair it).
One thing is for sure: When I get the new switch, I’ll test out every single port to make sure it works with PoE set to auto on.
