Hello,
We are facing an issue where the 1920s PoE+ switches fails to give power to some specific access points and other PoE devices from other vendors (Netgear, MikroTik). The PDs will simply not power up. Are there any known compatibilty concerns specific to the 1920s switches? Is this related to PDs using different PoE modes (Alt A / B / 4-pair) and the switch not being able to serve all modes?
What has been tested:
- Different cables and surrounding hardware
- Replace the switch with a few other PoE switches like other HP, Cisco and Zyxel PoE switches of different sizes. The setup with all PDs works excellent when using an other switch.
- Replace the switch with other 1920s switches (identical) and the issue persists.
The switches involved does give out PoE on PDs of different brands like Extreme Networks. So far we suspect the issue to be related to PoE modes. All documentation mentions 802.3at or 802.3af but nothing about supported modes.
Hope to find the answer to this, cheers.