Device 'IEEE PD' under "show power inline" output

Muhammad Anser Khan · ‎04-04-2010

Dear All,

I have connected Cisco IP Phone 7975 to the 3560 PoE switchport. It registered first but after 8 mins IP phone re trying to get the IP.

We have seen the following logs:

Apr 4 15:16:43.261: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi0/1, port set to untrusted.

Apr 4 15:17:24.240: %ILPOWER-7-DETECT: Interface Gi0/1: Power Device detected: IEEE PD

Apr 4 15:17:25.271: %ILPOWER-5-POWER_GRANTED: Interface Gi0/1: Power granted

Apr 4 15:17:30.967: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up

Apr 4 15:17:31.974: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up

Apr 4 15:17:33.954: %SWITCH_QOS_TB-5-TRUST_DEVICE_DETECTED: cisco-phone detected on port Gi0/1, port trust enabled.

Apr 4 15:25:37.908: %SWITCH_QOS_TB-5-TRUST_DEVICE_LOST: cisco-phone no longer detected on port Gi0/1, port set to untrusted.

It is showing IEEE PD in the following output:

Switch#show power inline

Available:370.0(w) Used:240.3(w) Remaining:129.7(w)

Interface Admin Oper Power Device Class Max

(Watts)

--------- ------ ---------- ------- ------------------- ----- ----

Gi0/1 auto on 12.0 Ieee PD 3 15.4

When we change the switchport to other switchport Gi0/20, the issue seems to be resolved.

Switch#show power inline

Gi0/20 auto on 12.0 IP Phone 7975 3 15.4

What could be the issue. This is a new IP Phone. Before this IP Phone, other IP Phone was working fine on this same port (G0/1)

Regards,

Anser

David Hailey · ‎04-10-2010

To me, this likely indicates a bad phone or possibly a bad cable. Essentially, what you're seeing is that the switch recognize an IEEE Powered Device (IEEE PD) and the phone is drawing power but it is having problems staying powered up and registerd to the CUCM. I'd try the phone on another switchport just to verify that the phone is the actual issue. If so, RMA the phone.

Hailey

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ctucker1405 · ‎08-13-2010

I'm a little late to the party, but we just ran into this issue. Make sure that CDP is not disabled on the port you are connecting the Cisco phone to. With CDP turned off the switch will regonize it as a IEEE PD. We are also running QoS, and the trust state would not go operational with the phone recognized as a IEEEPD (which in turn would not let the phone register with our voice router).

Hope this helps,

Chris

Muralidharan.p · ‎11-08-2010

Hi All,

Currently Im facing the same problem IEE PD in Show power inline. In CDP and swtich MAC table are not shwoing the phone's Mac address but in ARP table im able to see the MAC of phone and even the IP of phone and also im getting reply for ICMP when im pining the phone's IP. I already changes the switch port but the phone is not registering to the CUCM.

zulhaidi@bridgenet-int.com · ‎08-08-2016

I'm having the similar issue as well. When I tested the phone connected straight to the switchport, it works!. Surely physical connectivity issue from user cubicle network faceplate to the patch management rack.

HJZ

EverydayDiesel · ‎02-21-2017

what does PD mean exactly?

I am trying to power a camera that is

Power over Ethernet IEEE 802.3at Type 2 Class 4, max. 23.1 W, typical 16.7 W

but for some reason I dont seem to be able to give it enough power

https://supportforums.cisco.com/discussion/13231061/getting-full-poe-power-out-2960-s

jason.brwn08 · ‎04-19-2021

This was our exact problem Zulhaidi Mohamad Hashim. Bad faceplate to patch management cable run. Thank you brother.

Ven Taylor · ‎11-30-2010

Ran into this just a minute ago.

I kept resetting the port's power by configuring it like this:

conf t

int g1/0/5

power inline never

cdp disable

end

conf t

int g1/0/5

power inline auto

cdp enable

end

Had to do it twice, but the port came up and powered on the phone.

Best of luck!

Ven

Ven Taylor

Hamdi Ben Fredj · ‎08-13-2018

Thanks Ven Taylor,

thant's worked for me , the Phone is powered again and working .

Thanks

FirstFoot · ‎03-06-2011

It worked for me when i "shut and no shut"

Also un plug and plug it back the cables.

/D.G.Naidu

tbergquist · ‎03-26-2013

Seeing a similar issue. The phones will run fine for a while. If you look at the phone it looks like it is registered, but when you lift the handset, nothing. All buttons are unresponsive too. Device shows up as Ieee PD under show power inline.

I have to power cycle the phone (shut/no shut) to get it back up. After the phone reboot it shows up correctly under "Show Power inline"

Seeing this randomly across multiple switches, and multiple phones/phone models.

Wonder if this is a code issue on the switches. That seems to be the common theme.

LCMC · ‎10-21-2016

Hi everyone.

I did the Troubleshooting commented, but does not work.

my last resource was check the UTP cable and I found that the port on the jack panel was as wrongly

Regards.

Luis Coiro

Hesameddin Alizadeh · ‎06-30-2017

Hi Anser

I am not sure if your problem has been still exist, but referring to some kind of IP Telephony you need more Power Inline on your Port which would be 15.4 Watts.

Please check this command on your Port: power inline port 2x-mode

Regards
Hesam

tech_gubby · ‎05-10-2021

Bouncing the port fixed this issue.

antonma2 · ‎10-15-2022

12 years later...

Happened the same to me with a switch 9300 and AP 9120. We fixed it replacing the cable.