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New Member

No inline power on a 4506-E port.

Hi,

We have just purchased and installed a 4506-E chassis.  It contains a supervisor, two POE blades and 3 non-poe blades.  Version is 12.2(53)SG1.  Anyhoo, one of the ports isn't providing power to an IP phone.  We can plug the phone into any of the other POE ports and it works fine.  Is there a way to test an idividual port for POE problems?  What could the problem be?  The port works for normal data but will not provide power.

Thanks,

Daniel

  • LAN Switching and Routing
12 REPLIES
Hall of Fame Super Gold

Re: No inline power on a 4506-E port.

Try the command "sh power inline" and verify if you have enough power.

New Member

Re: No inline power on a 4506-E port.

Available:1400(w), Used:37(w), Remaining

:1363(w)

Thanks,

Daniel

Hall of Fame Super Gold

Re: No inline power on a 4506-E port.

Ok.  Lots of power left for you.

Can you post the command "sh power in ".

Can you post the command "sh module".

Can you post the config of the interface.

Is CDP enabled globally?

New Member

Re: No inline power on a 4506-E port.

sh power in g3/17
Available:1400(w)  Used:37(w)  Remaining:1363(w)

Interface Admin  Oper            Power(Watts)     Device              Class
                            From PS    To Device
--------- ------ ---------- ---------- ---------- ------------------- -----

Gi3/17    auto   off        0.0        0.0        n/a                 n/a

Interface  AdminPowerMax   AdminConsumption
             (Watts)           (Watts)
---------- --------------- --------------------

Gi3/17                20.0                 15.4


sh module
Chassis Type : WS-C4506-E

Power consumed by backplane : 0 Watts

Mod Ports Card Type                              Model            

---+-----+--------------------------------------+------------------+-----------
1     6  Sup 6L-E 10GE (X2), 1000BaseX (SFP)    WS-X45-SUP6L-E    
2    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E  
3    48  10/100/1000BaseT Premium POE E Series  WS-X4648-RJ45V+E  
4    48  10/100/1000BaseT (RJ45)                WS-X4648-RJ45-E   
5    48  10/100/1000BaseT (RJ45)                WS-X4648-RJ45-E   
6    48  10/100/1000BaseT (RJ45)                WS-X4648-RJ45-E  

show interfaces g3/17 capabilities
GigabitEthernet3/17
  Model:                 WS-X4648-RJ45V+E-RJ-45
  Type:                  10/100/1000-TX
  Speed:                 10,100,1000,auto
  Duplex:                half,full,auto
  Auto-MDIX:             yes
  Trunk encap. type:     802.1Q
  Trunk mode:            on,off,desirable,nonegotiate
  Channel:               yes
  Broadcast suppression: percentage(0-100), hw
  Multicast suppression: percentage(0-100), hw
  Flowcontrol:           rx-(off,on,desired),tx-(off,on,desired)
  VLAN Membership:       static, dynamic
  Fast Start:            yes
  CoS rewrite:           yes
  ToS rewrite:           yes
  Inline power:          yes (Cisco Voice Protocol/IEEE Protocol 802.3af)
  SPAN:                  source/destination
  UDLD:                  yes
  Link Debounce:         no
  Link Debounce Time:    no
  Port Security:         yes
  Dot1x:                 yes
  Maximum MTU:           9198 bytes (Jumbo Frames)
  Multiple Media Types:  no
  Diagnostic Monitoring: N/A
  Queuing:               rx-(N/A), tx-(1p7q1t)

Thanks,

Daniel

Hall of Fame Super Gold

Re: No inline power on a 4506-E port.

Nothing out of the ordinary from your last post.

We can plug the phone into any of the other POE ports and it works fine.

Define "ports"?  Desk ports or directly-connected-to-the-switch ports?

Is there a way to test an idividual port for POE problems?

Ok, let me make a confession.  I'm no expert of the 4500 so please don't get annoyed that this command may not work.  Try performing a cable test from your switch to the phone by using the command "test cable tdr ".  Wait for about 10-15 seconds and perform the "sh cable tdr int ".  If this is possible, can you kindly post the result?

Purple

Re: No inline power on a 4506-E port.

     Try another device  like an AP if you have one lieing around.   Try resetting the module with the questionable port .  If this doesn't fix it then get an RMA to get it replaced...

Purple

Re: No inline power on a 4506-E port.

     Try another device  like an AP if you have one lieing around.   Try resetting the module with the questionable port .  If this doesn't fix it then get an RMA to get it replaced...

New Member

Re: No inline power on a 4506-E port.

unfortunatley those commands aren't recognised.  I will try to reset the module.

Thanks,
Daniel

New Member

Re: No inline power on a 4506-E port.

Hello, did the reset worked? have you had the issue again?

One of my customer have a similar problem, some of the poe interfaces from one of the cards stop working. They had an ip phone receiving poe in one port (for example 1/17) if the try to plug another ip phone in other port (1/2) it did not set up. If they change the ip phone from 1/17 to 1/2 it did not work and if the plugged back the ip phone from 1/2 to 1/17 it didn´t work again. After reseting the module it is working ok again all the interfaces, but, I am afraid it could fail again.Do you have any new issue?

I have found this other post: https://supportforums.cisco.com/message/3038815#3038815 . Did it applie to your issue?

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