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POE issue with HP 5300 and 2600

Omair Naim
Occasional Visitor

POE issue with HP 5300 and 2600

I have HP 5300 and 2600 on edge and have Cisco 1130 and 1242 access points connecte to them. I have about 500 access points and the issue is I am not getting required power from switch for the access point, like Cisco 1130 needs 12.2 Watts but I always get average of 8.5 Watts on the POR port connected to access point. I have opened case with Cisco as well and they say that you need to get proper POE switch for that, also I opened case with HP and they say that it should deliver as per POE design guide. I do have ample power available to be delivered to ports. See below: Is there any way to increase power to POE ports in 5300 and 2600 series.

DF-H-CL1# sh cdp neighbors

CDP neighbors information

Port Device ID | Platform Capability
---- ----------------------------- + ---------------------------- ----------
A13 House-Keeping-Inside.cisco... | Cisco IOS Software, C1240...
A22 KITCHEN-WORKSHOP.cisco.com | Cisco IOS Software, C1130...

------------------------------------------------------------------------------
IDF-H-CL1# sh power-management A13

Status and Counters - Port Power Status for port A13

Power Enable : Yes

Priority : Critical Configured Type :
Detection Status : Delivering Power Class : 3

Over Current Cnt : 0 MPS Absent Cnt : 0
Power Denied Cnt : 0 Short Cnt : 0

Voltage : 487 dV Current : 166 mA
Power : 8084 mW
-------------------------------------------------------------------------------
IDF-H-CL1# sh power-management A22

Status and Counters - Port Power Status for port A22

Power Enable : Yes

Priority : Low Configured Type :
Detection Status : Delivering Power Class : 3

Over Current Cnt : 0 MPS Absent Cnt : 0
Power Denied Cnt : 0 Short Cnt : 0

Voltage : 486 dV Current : 178 mA
Power : 8650 mW
-------------------------------------------------------------------------------

IDF-H-CL1# sh power-management

Status and Counters - System Power Status for slot A

Maximum Power : 408 W Operational Status : On
Power In Use : 125 W +/- 6 W Usage Threshold (%) : 80
6 REPLIES
Matt Hobbs
Honored Contributor

Re: POE issue with HP 5300 and 2600

If I recall correctly, certain Cisco devices rely on CDPv2 to recieve enough power. Since the ProCurve devices do not support this (only read only CDPv1) by default not enough power will be sent. To rectify it, you need to disable CDP on the switches "no cdp run".

Omair Naim
Occasional Visitor

Re: POE issue with HP 5300 and 2600

Thanks for your response, I did disable CDP and still the same result. I am not getting above 8.5W in average.

Regards
Omair
Pieter 't Hart
Honored Contributor

Re: POE issue with HP 5300 and 2600

Omair Naim
Occasional Visitor

Re: POE issue with HP 5300 and 2600

I did it globally.
Pieter 't Hart
Honored Contributor

Re: POE issue with HP 5300 and 2600

when reading
http://www.hp.com/rnd/pdfs/poe_planning_implementation.pdf
there are two models RPS/EPS (600/610), which one do you use ?
how many POE slots are connected (page 3-11 to 3-15).

>>> Power In Use : 125 W +/- 6 W <<<
means more than mentioned two AP's are serviced from this RPS/EPS?

from page 2-6, there is a "priority setting" => can you try setting priority on a port to high?
See if this port gets full power?

Pieter
Omair Naim
Occasional Visitor

Re: POE issue with HP 5300 and 2600

I have External PS on connecting to one module thats why if you notice in below I am getting complete 408W for Module A. I did try changing Power priority to highest which is critical but no luck.

Status and Counters - System Power Status for slot A

Maximum Power : 408 W Operational Status : On
Power In Use : 120 W +/- 6 W Usage Threshold (%) : 80

Omair