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Webcast-Catalyst9k
New Member

How to find out how much power my ip phone uses connected to a cat4500?

Hi,

on a 4500 I am currently trying to get the information how much power a connected poe ip phone uses.

I got the following command output:

show power inline gi1/1

Interface Admin Oper Power(Watts) Device Class

From PS To Device

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

Gi1/1 auto on 7.5 7.0 Ieee PD 2

Interface AdminPowerMax AdminConsumption

(Watts) (Watts)

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

Gi1/1 20.0 15.4

===================

show power inline police gi1/1

Interface Admin Oper Admin Oper Cutoff Oper

State State Police Police Power Power

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

Gi1/1 auto on none n/a n/a 3.2

It would be fine if somebody could explain exactly the following terms:

- Power from PS

- Power to Device -> amount of power the phone uses?

- Operational Power -> also the amount of power the phone uses?

- Admin Power Max

- Admin Power Consumption

Best Regards,

Thorsten Steffen

2 REPLIES
Hall of Fame Super Gold

Re: How to find out how much power my ip phone uses connected to

Your phone is pulling 15.4 watts of power but the port is allowing up to 20.0 watts.

New Member

Re: How to find out how much power my ip phone uses connected to

That's not what I think.

In my eyes it pulls 3.2 watts which is the operational power shown in the second output. Further it's a class 2 device which afaik pulls not more than 6,49 watts.

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