Wired Intelligent Edge

I have a stack consistent of two switches:

sw11# show stacking 

Stack ID         : 01002c59-e512c640                                                     
MAC Address      : 2c59e5-12c663
Stack Topology   : Ring                                    
Stack Status     : Active                                  
Uptime           : 2d 23h 35m  
Software Version : WB.15.12.0010

 Mbr                                                                         
 ID  Mac Address   Model                                  Pri Status         
 --- ------------- -------------------------------------- --- ---------------
 1   2c59e5-12c640 HP J9727A 2920-24G-PoE+ Switch         128 Standby        
 2   d4c9ef-aaa040 HP J9728A 2920-48G Switch              128 Commander      
sw11# 

 The problem is that the half of the ports doesn't delivering power via POE (detection status: disabled):

sw11# show power-over-ethernet brief 

 Status and Counters - Port Power Status

  Member 1 Power
  Available: 370 W  Used: 0 W  Remaining: 370 W

  PoE   | Power  Power    Alloc Alloc Actual Configured  Detection   Power Pre-std
  Port  | Enable Priority By    Power Power  Type        Status      Class Detect
  ----- + ------ -------- ----- ----- ------ ----------- ----------- ----- ------
  1/1   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/2   | Yes    critical value 12 W  0.0 W              Disabled    0     off   
  1/3   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/4   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/5   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/6   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/7   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/8   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/9   | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/10  | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/11  | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/12  | Yes    high     value 12 W  0.0 W              Disabled    0     off   
  1/13  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/14  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/15  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/16  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/17  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/18  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/19  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/20  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/21  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/22  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/23  | Yes    low      value 12 W  0.0 W              Searching   0     off   
  1/24  | Yes    low      value 12 W  0.0 W              Searching   0     off   
 

I can manually put disabled ports to "searching" by executing 

sw11(config)# interface 1/1-1/24 power-over-ethernet
sw11(config)# reload

After that, PoE works fine on ports 1-12, but only for some time. On the next day ports 1-12 again "disabled". The question is: how to permanently turn on searching for poe devices on all ports?

Are you saving the configuration after you changes?

So turn on POE on all ports.

interface (Iface list) power-over-ethernet

wri mem

reload

See if that retains the changes.

I sure wish that people would actually reply back to let others know if suggestions to their problems worked...

Recieving same issue, expect PoE ports 2/1-2/12 will not enable. They stay in an Disabled State. Rebooting switch causes a temporary solution, then reverts. Running WB.15.17.0010 on an 3 2920 stack.    

Having quite the same problem and subscribing to the thread.

You will need to log a call if there is an actual fault.

You may be able to see somethng useful with commands like this:

show logging -r -w

- w shows the Warning arlarms (do a ? to see other options). Example below has warnings as power cables were disconnected/reconnected.

W 02/20/16 19:42:06 00576 chassis: 50V Power Supply 1 is Faulted. Failures: 2
W 02/20/16 19:42:05 00071 chassis: Power Supply failure:  Supply: 1, Failures: 2
W 02/20/16 19:35:17 00071 chassis: Power Supply OK:  Supply: 1, Failures: 1
W 02/20/16 19:35:17 00576 chassis: 50V Power Supply 1 is OK. Failures: 1
W 02/20/16 19:35:11 00576 chassis: 50V Power Supply 1 is Faulted. Failures: 1
W 02/20/16 19:35:11 00071 chassis: Power Supply failure:  Supply: 1, Failures: 1

Also

show power-over-ethernet brief
show power-over-ethernet
show run int 1/12

I was able to figure out that it wasn't the PoE issue that's causing the problem.

Can you please tell us what was the issue. Even we are facing the same issue. Power-over-ethernet goes to disabled mode frequently. Have to enable PoE by running command "power-over-ethernet" on the disable ports. But this is a temporary solution.

I found a possible solution to this problem that I'd like to share. 

The following command allows the switch to calculate power draw on actual power usage instead of the reported LLDP value:  no lldp config 1-24 dot3TlvEnable poe_config

This link is a very good writeup explaining the problem.

https://www.sourceonetechnology.com/insufficient-power-allocation-error-message-on-hp-switches/

I hope this helps

"The following command allows the switch to calculate power draw on actual power usage instead of the reported LLDP value:  no lldp config 1-24 dot3TlvEnable poe_config"This fixed a similiar issue that I started having on an 8212zl