airMAX - Configure a PoE Bridge

Option A. - (Traditional) Two devices, two PoE's (requires a switch or router)

 

Option B. - (PoE Pass-through) Two devices, one PoE

Note: This is possible only when a UBNT radio has a second Ethernet port to activate for this purpose. When enabled, the device allows Power over Ethernet (PoE) power to pass from the main port to the secondary port, thereby powering an additional device. From within the airOS configuration console, select the |Advanced| tab > Advanced Ethernet Settings > PoE Passthrough: [X] Enable.

 

Option B1. - (PoE Linking) Two independently powered devices, one PoE

Inspired by a Ubiquiti Support Forum post by @esseph, this is a similar configuration to (B.) above, however it introduces an added feature. If you power the first radio through the "Secondary" port rather than the "Main" port, power is not lost to the next device if the first radio is rebooted.

NOTE: For this configuration, do NOT enable PoE Passthrough as referenced in B. above. Use it with "PoE Passthrough: [ ] Enable" UN-checked.

 

Option C. - (PoE Bridge) Two devices, two PoE's

Note: There is no switch or router required, or possible.

 

Option D. - (PoE Bridge and Pass-through) Three or Four devices, two PoE's

Note: This is possible only when a UBNT radio has a second Ethernet port to activate for this purpose. When enabled, the device allows Power over Ethernet (PoE) power to pass from the main port to the secondary port, thereby powering an additional device. From within the airOS configuration console, select the |Advanced| tab > Advanced Ethernet Settings > PoE Passthrough: [X] Enable.