PoE issue with low power device (DOREMiDi MR-1 PoE) on Netgear M4250 switch

Hello shumaku,

Thank you for your post and for taking the time to share your insights.

From a physical observation perspective, the behavior is very clear:

• The LEDs on the DOREMiDi MR-1 PoE pulse repeatedly
• The device appears to start up briefly
• After a short time, it powers down again
• This cycle repeats continuously

This strongly suggests that PoE power is being applied and then withdrawn by the switch.

Regarding power consumption:

The manufacturer of the DOREMiDi MR-1 PoE has confirmed the following:

“This issue may be due to the low power consumption of the MR-1 PoE. Some PoE switches continuously cycle between powering on and off because the powered devices consume low power.”

The MR-1 PoE has an approximate power draw of ~1.5W, which appears to be below the effective sustain threshold used by the Netgear PoE controller. While I fully agree that, per IEEE 802.3af specifications, a Class 0 or Class 1 PD should be supported within the defined power range, the real-world behavior on this switch indicates that PoE power is being removed after initial negotiation.

As mentioned earlier, the same device operates continuously and reliably on a Cisco LGS108P, which suggests a difference in PoE power sustain or detection behavior rather than standards compliance of the PD itself.

To further investigate this, I have now opened a support case with Netgear and have provided logs extracted directly from the switch to assist with the analysis.

Thanks again for your input — it is very much appreciated.