Ive got a Netgear GS108PEv3 switch.

How can i enable / disable the POE function on a port by port basis on this switch, i couldnt find anything in the manual or by hunting around the web GUI.

screenshot of web gui on GS108PEv3 switch


You cannot disable the POE ports in this switch.

The ports are auto-sensing,

(802.1af) they will enable PoE once the switch has discovered a signature resistance on the designated pair.

POE+ or 802.1at devices which, your switch uses. These leverage a.c impedance using a capacitor on the phantom transformer circuit to detect a POE compliant device. It then uses LLDP-MED to negotiate power levels of the device.

None of the POE versions will supply a legacy device (non POE compliant) power if it doesn't detect the signature circuitry signal of a POE standard.

If your model supports the console, you could try there. But it looks like it was left out by design.

Hope this helps.

  • Thanks, as long as its auto-sensing thats fine, i just wanted to make sure non POE devices plugged into POE ports (due to lack of port space) would be ok. – sam Feb 27 '18 at 9:10
  • "once a PoE packet request has been sent by the device connecting to it" is pretty much nonsense as a device can't send any packets before it's powered up. PoE uses MDI sensing to detect powered devices (using signature resistors). – Zac67 Feb 27 '18 at 12:16
  • Lol, that was taken from netgears answer at their support site. I didn't even notice the mix of 802.1at/lldp-med and 802.1af. thanks for the comment. I updated it – Tim_Stewart Feb 27 '18 at 20:28

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