on a CRS354-48P-4S+2Q+RM (48 Port PoE Switch), two devices didn't get power from the switch. (no log entry or something else)
i replaced an Cisco Catalyst 3750 and there the devices are up. Double-checked everything, seems the Mikrotik Switch force to have PoE Mode-B on the Ports, but my Device is a PoE Mode-A (Doorbird, https://www.doorbird.com/poe )... the old Cisco power all devices up, no matter if Mode A or Mode B.
The Mikrotik Help https://help.mikrotik.com/docs/display/ ... utpolarity
Are the Cisco's and some other "cheaper" PoE Switch Manufacturer are here more "tolerant" to accept both Modes?however other vendors can use opposite or Mode A pinout on PD. Reverse polarity would require using a crossover cable but Mode A PD would require Mode B to Mode A converter.
Do someone know a "converter" for Gigabit? I have some PoE Injectors here, but my heart is bleeding to use an PoE Injector behind a PoE Switch...
Best Regards,
YAN