4500 POE will not power a polycom 560 phone

Answered Question
Jun 11th, 2010
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We have a 4500 with a Polycom 560 phone what will not power up with inline power. I have confirmed all the power settings and am not able to figrue out why this phone will not power on with POE.


IOS Ver: cat4000-i5k91s-mz.122-25.EWA14.bin


1     2  Supervisor IV 1000BaseX (GBIC)         WS-X4515 

2    48  10/100BaseTX (RJ45)V                   WS-X4148-RJ45V


show power

Power                                             Fan      Inline
Supply  Model No          Type       Status       Sensor   Status
------  ----------------  ---------  -----------  -------  -------
PS1     PWR-C45-2800AC    AC 2800W   good         good     good
PS2     PWR-C45-2800AC    AC 2800W   good         good     good

Power supplies needed by system    : 1
Power supplies currently available : 2

Power Summary                      Maximum
(in Watts)              Used     Available
----------------------   ----     ---------
System Power (12V)        340        1360
Inline Power (-50V)         0        1400
Backplane Power (3.3V)      0          40
----------------------   ----     ---------
Total                     340        2800


power cap
Power Summary                      Maximum
(in Watts)              Used     Available
----------------------   ----     ---------
System Power (12V)        340        1360
Inline Power (-50V)         0        1400
Backplane Power (3.3V)      0          40
----------------------   ----     ---------
Total                     340        2800




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

Fa2/37    auto   off        0.0        0.0        n/a                 n/a

Correct Answer by Aaron Harrison about 6 years 11 months ago

Hi

That card only supports Cisco Pre-Standard PoE.

:

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

IEEE 802.3af

Although the IEEE draft for power over Ethernet standards are not yet fully defined, the Cisco Catalyst 4006 chassis, auxiliary power shelf, and PEM are ready to support delivery of up to 15.4 watts per Ethernet port. New inline power line cards supporting both the IEEE 802.3af standard and Cisco inline power implementation will be available when the standard is ratified. For IEEE 802.3af compliance, an existing Cisco 48-port 10/100 Inline Power line card (part number WS-X4148-RJ45V) must be replaced with a new IEEE 802.3af-compliant line card.

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

Basically for non-Cisco devices (unless they claim to support Cisco pre standard PoE) you need a standards based 802.3af card. This means replacing your line card.

If you just have this one device or a small number power bricks may be a cheaper solution.

Regards

Aaron

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Correct Answer
Aaron Harrison Fri, 06/11/2010 - 12:54
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Hi

That card only supports Cisco Pre-Standard PoE.

:

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

IEEE 802.3af

Although the IEEE draft for power over Ethernet standards are not yet fully defined, the Cisco Catalyst 4006 chassis, auxiliary power shelf, and PEM are ready to support delivery of up to 15.4 watts per Ethernet port. New inline power line cards supporting both the IEEE 802.3af standard and Cisco inline power implementation will be available when the standard is ratified. For IEEE 802.3af compliance, an existing Cisco 48-port 10/100 Inline Power line card (part number WS-X4148-RJ45V) must be replaced with a new IEEE 802.3af-compliant line card.

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

Basically for non-Cisco devices (unless they claim to support Cisco pre standard PoE) you need a standards based 802.3af card. This means replacing your line card.

If you just have this one device or a small number power bricks may be a cheaper solution.

Regards

Aaron

Please rate helpful posts...

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