I managed to do a a very stupid thing, I blew up a port on my CRS328-24P-4S+RM and took down my RB960PGS as well.
To be fair, it took normal operations to do so...
Here are the steps, which I do not advise to follow:
- Connect power to RB960PGS (48V adapter to drive 802.3af cameras)
- Accidentally use crossover cable to connect CRS328 to the RB960PGS
- ???
- Magic smoke!
The carnage:
- Dead PoE port in CRS328 (poe-out status: overload)
- Dead RB960PGS, well, no PoE input, and if powered by the jack, and first port is connected the device would power off (short).
I managed to resurrect the RB960PGS, the PoE input diode was blown, replaced that and it worked. That is after I figured out that the cable I was using was crossed (ie: where the +24V supposed to be it was seeing -24V).
I am yet to disassemble the CRS328 (I hope there is a protection diode that is shorted... I hope), otherwise I am looking for a replacement PSE-24 board apparently Mikrotik doesn't supply separately. Alternatively I would just live with a dead port.