PoE Problem on Cisco 2960X

[Mehmet Can]

Hello Everyone,

I have an interesting problem on 2960x.

I have 11 Avaya IP Telephone on 2960X. Our problem is IP telephone showing get electric with PoE but IP telephone not working. I seeing "show power inline" output IP telephone using 4.0 watt value port statistic but port not showing "UP"..  When i did port shutdown/no shutdown or reboot switch IP Telephones working fine 1 week or less. After facing again. We dont have any error log in buffer.

I sharing output below. 

[Deepak Kumar]

Hi,

Share the Logs, firmware version no etc. 

I hope you verified your configuration and LLDP is enabled.

Share a another output from below command:

show interfaces status err-disabled

Regards,

Deepak Kumar 

[Mehmet Can]

Hi Deepak,

Yes, LLDP run command enabled.

No output for show interfaces status err-disabled. 

All log are included ise authentication logs.. 

Version: c2960x-universalk9-mz.152-2.E7.bin

Port output when we face the problem.

Sw#show int des
Interface                      Status         Protocol Description
Vl1                            admin down     down     
Vl10                           up             up       
Fa0                            admin down     down     
Gi1/0/1                        down           down     
Gi1/0/2                        down           down     
Gi1/0/3                        down           down     
Gi1/0/4                        down           down     
Gi1/0/5                        down           down     
Gi1/0/6                        down           down     
Gi1/0/7                        down           down     
Gi1/0/8                        up             up       
Gi1/0/9                        down           down     
Gi1/0/10                       down           down     
Gi1/0/11                       down           down     
Gi1/0/12                       down           down     
Gi1/0/13                       down           down     
Gi1/0/14                       down           down     
Gi1/0/15                       down           down     
Gi1/0/16                       down           down     
Gi1/0/17                       down           down     
Gi1/0/18                       down           down     
Gi1/0/19                       down           down     
Gi1/0/20                       up             up       
Gi1/0/21                       down           down     
Gi1/0/22                       down           down     
Gi1/0/23                       down           down     
Gi1/0/24                       up             up       
Gi1/0/25                       down           down     
Gi1/0/26                       down           down     
Gi1/0/27                       down           down     
Gi1/0/28                       down           down     
Gi1/0/29                       down           down     
Gi1/0/30                       down           down     
Gi1/0/31                       down           down     
Gi1/0/32                       down           down     
Gi1/0/33                       down           down     
Gi1/0/34                       down           down     
Gi1/0/35                       down           down     
Gi1/0/36                       down           down     
Gi1/0/37                       down           down     
Gi1/0/38                       down           down     
Gi1/0/39                       down           down     
Gi1/0/40                       down           down     
Gi1/0/41                       down           down     
Gi1/0/42                       down           down     
Gi1/0/43                       down           down     
Gi1/0/44                       down           down     
Gi1/0/45                       down           down     
Gi1/0/46                       down           down     
Gi1/0/47                       down           down     
Gi1/0/48                       down           down     
Gi1/0/49                       down           down     
Gi1/0/50                       down           down     
Te1/0/1                        up             up       
Te1/0/2                        down           down     

Module   Available     Used     Remaining
          (Watts)     (Watts)    (Watts) 
------   ---------   --------   ---------
1           740.0       47.4       692.6
Interface Admin  Oper       Power   Device              Class Max
                            (Watts)                            
--------- ------ ---------- ------- ------------------- ----- ----
Gi1/0/1   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/2   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/3   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/4   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/5   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/6   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/7   auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/8   auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/9   auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/10  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/11  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/12  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/13  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/14  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/15  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/16  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/17  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/18  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/19  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/20  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/21  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/22  auto   on         5.7     Ieee PD             2     30.0 
Gi1/0/23  auto   on         5.7     Ieee PD             2     30.0 
Gi1/0/24  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/25  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/26  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/27  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/28  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/29  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/30  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/31  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/32  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/33  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/34  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/35  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/36  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/37  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/38  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/39  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/40  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/41  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/42  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/43  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/44  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/45  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/46  auto   off        0.0     n/a                 n/a   30.0 
Gi1/0/47  auto   on         4.0     Ieee PD             1     30.0 
Gi1/0/48  auto   on         4.0     Ieee PD             1     30.0 

[Deepak Kumar]

Hi,

You will only get output while your port is down and it is in error disabled mode. I suggested to run this command while you will face issue. 

Share Switch configuration.

Regards,

Deepak Kumar

[Mehmet Can]

I have errdisable recovery interval 30 config in switch. If ports should err-disable this config fix the ports.

What makes you think ports err-disable?

[Leo Laohoo]

CSCuj64918, CSCul93272

[Mehmet Can]

Hello Leo,

Not matching our problem.

[Deepak Kumar]

Hi,

It is suggested to change IOS version. There are several bugs has reported for similar issues. I will try and will get back to you.

Regards,

Deepak Kumar

[Leo Laohoo]

A number of people have seen some "funny stuff" happening when using 15.2(2)E7 and a lot of the issues were resolved when they downgraded to 15.2(2)E6.
If you're brave, try 15.2(2)E9.

[Mehmet Can]

I will upgrade suggest version today. I hope our problem solve.

c2960x-universalk9-mz.152-4.E6