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What PoE standards are needed to power up the AP39xx?

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TitleWhat PoE standards are needed to power up the AP39xx?
What PoE standards are needed to power up the AP39xx?
  • IdentiFi 
  • ExtremeCloud Appliance (XCA)
  • Firmware 10.x
  • AP39xx Series
  • AP3915i
  • AP3935i/e
  • AP3965i/e
  • 802.3at
  • 802.3af
  • To get 4x4:4 spatial streams (MU-MIMO) support on the AP39XX you will need to power the AP with 802.3at (30W)
  • If 802.3af is the only option available, you will get reduced functionality of 2x2:2 on both radios.
  • Supports LLDP Inline Power Negotiation for PoE+ 
  • Caveats:
    • X440 (G1) and X460 (G1) do not support hardware-based two-event classification for 802.3at, so LLDP must be configured.
    • Summit G2 series switches, as well as S/K series support hardware-based two-event classification so LLDP is not required.

You can force an AP to only use 802.3AT power with the option "Low Power Mode Override", which can be found under the following path:

Identifi Controller:
  1.  Click AP tab > Select AP in question
  2.  Click Properties Tab > Then Advanced Button as seen here:
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  3. Check the box next to "Low Power Mode Override" (may cause AP reboot) as seen here:
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Go to Configure > Devices > AP > Select the AP > Advanced > Select "Low Power Mode".

Check this box to have AP ALWAYS operate in 4x4 mode regardless what was negotiated with the Switch PoE4). When this option is cleared, the AP operates in 2x2 or 4x4 depending on what was negotiated with the Switch Poe using the 2-event classification.
  • AP sends Power Status element with "Power Mode" set to 0 when "Low Power Mode Override" is enabled.
  • AP sends Critical Log "entering Low Power mode" only if negotiated .af with Switch PoE and "Low Power Mode Override" is disabled. Otherwise, Critical Log is not sent.
  • Controller "Network Health" shows only APs that have "Power Mode" bit in the Power Status set to 1.

The default configuration for the 39xx AP is disabled.

Additional notes
See Also:  If the 39xx AP is under loaded you will get a notification on the AP Logs Tab, example:
03/31/16 11:39:21   1548Y-xxxxxxx    Critical    17 sec in cycle 1: AP powered by AF instead of AT PS, entering low power mode(2x2 R1,2x2 R2)
Also on the Home screen of the Extreme Wireless Assistant you will see:

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