Cisco 8865 not able to power on EM connected to SG350

[AssuranceTL8844]

Cisco 8865 connected to SG350- 52 MP POE Gig port, not able to power on EM 8800 28 button module. The message on phone display is "The phone is unable to power the accessory". The port is not drawing power more than 13 watts. PFA screenshot of port.

While we connected to a 2960, the phone drew 16.9 watts and EM came up. Any suggestions.

[Flavio Miranda]

It seems that CDP is not ok. Try to enable LLDP also.

[AssuranceTL8844]

Upgraded to image_tesla_hybrid_2.5.5.47_release_cisco_signed.bin which fixed the issue.

[emilio_]

Deactivate CDP on that port. The reason why the switch supplies no more than 13W is due to CDP negotiation. If no power is negotiated (either CDP or LLDP) and you have configured Port Mode PoE (which you have already configured), the switch will provide up to the limit configured (20W in your case).

[Jitendra Kumar]

try disable CDP.

# config terminal
(config)# interface TenGigabitEthernet4/1
(config-if)# no cdp enable

if you not have much config on the switch then you can try to reset the switch many cases i see its resolved.

Thanks,

Jitendra