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PoE Problem on Cisco 2960X

Mehmet Can
Beginner
Beginner

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. 

 

 

9 Replies 9

Deepak Kumar
Advocate
Advocate

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 

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

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 

 

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

 

 

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

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
VIP Community Legend VIP Community Legend
VIP Community Legend
CSCuj64918, CSCul93272

Hello Leo,

Not matching our problem.

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

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

Leo Laohoo
VIP Community Legend VIP Community Legend
VIP Community Legend
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.

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

 

c2960x-universalk9-mz.152-4.E6

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