WS-C2960X-48FPD-L 2960X switch loosing POE power on some ports, requires cold boot to fix

[takehurst]

I have just started deploying Avaya IP phones on Cisco 2960X switches stacked. After some time a block of 14 ports will quit providing POE.  Nothing fixes the issue until we cold boot the switch.  Anyone has this problem? Here is stack information

cisco WS-C2960X-48FPD-L (APM86XXX) processor (revision M0) with 524288K bytes of memory.
Processor board ID FOC2022Z3G7
Last reset from reload command
2 Virtual Ethernet interfaces
1 FastEthernet interface
250 Gigabit Ethernet interfaces
10 Ten Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:56:2B:43:EB:00
Motherboard assembly number : 73-16686-05
Power supply part number : 341-0527-02
Motherboard serial number : FOC20226MH6
Power supply serial number : DCB20166Z0Z
Model revision number : M0
Motherboard revision number : A0
Model number : WS-C2960X-48FPD-L
Daughterboard assembly number : 73-14200-03
Daughterboard serial number : FOC202317PD
System serial number : FOC2022Z3G7
Top Assembly Part Number : 68-100463-01
Top Assembly Revision Number : C0
Version ID : V05
CLEI Code Number : CMMLJ00ARD
Daughterboard revision number : A0
Hardware Board Revision Number : 0x18

Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 52 WS-C2960X-48FPD-L 15.2(4)E6 C2960X-UNIVERSALK9-M
2 52 WS-C2960X-48FPD-L 15.2(4)E6 C2960X-UNIVERSALK9-M
3 52 WS-C2960X-48FPD-L 15.2(4)E6 C2960X-UNIVERSALK9-M
4 52 WS-C2960X-48FPD-L 15.2(4)E6 C2960X-UNIVERSALK9-M
5 52 WS-C2960X-48FPD-L 15.2(4)E6 C2960X-UNIVERSALK9-M

[Martin]

How many PoE devices you got connected to the switch?  add the power up they are pulling you can check by using command show inline power.  If it adds up to close or more than the PSU power in the switch then this could be your issue

[takehurst]

Sorry should have said we are not out of power. Have plenty of PS power left.

[takehurst]

Sorry should have added we are not out of power supply power.

[Georg Pauwen]

Hello,

try and configure:

power inline port 2x-mode

on the ports affected. 

[takehurst]

Hey all,

The problem. Ports don't provide POE via CDP or LLDP.  The temp fix is to cold boot switch. Nothing else works. 

I have spent that last 2 weeks working through 2960X POE issues. TAC has confirmed that there are issues with IOS 15.2(4) E5 and recommend upgrading to E6 code.  Problem is my 2960X switches are running E6 code. not all ports fail. Just some. Had 3 switches fail. But have hundreds being deployed as we type this.  Had 6 TAC engineers Case (SR685943203) and now a 7th wanting to look at a 2960X switch I have a in a failed state. No resolution at this time.  

Anyone solve this?