Enterasys C5K125-48P2 Not Passing the correct amount of power of PoE+


I've been running into a lot of problems with poe devices that are class4 and require PoE+. I have VoIP phones that aren't getting the correct amount of power. I have lldp enabled on the port with the phone.

Is there any known issues with PoE+ that anyone has seen?

I fixed our phone issue by telling the phones (cisco) to not use power negotiation, but its not working its expansion module.

6 replies

Userlevel 1
Hello Jose Figueroa,

What is the model of the phone and expansion module?

Thank you.
The phone model is CP-9951-C-K9= and the expansion module is CP-CKEM-C=
Userlevel 1
Hello Jose Figueroa,

I would like to work with you to investigate this issue further. Can you please open a case with the GTAC?

Thank you.
Userlevel 7
Just wanted to check and see if there were any updates to the issue so that this can be marked "solved."
Userlevel 1
We have released firmware version 6.81.06.0002 on the C5/B5 to support the negotiation of PoE via LLDP.
Userlevel 7
Langley, Michael wrote:

We have released firmware version 6.81.06.0002 on the C5/B5 to support the negotiation of PoE via LLDP.

Reference: https://gtacknowledge.extremenetworks.com/articles/Q_A/Cisco-CP-9951-w-key-pad-extender-CP-CKEM-C-no...

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