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Contributor II

AP275 Radio disabled due to low power

Greetings,

 

We are installing our 1st AP275.  We have many AP175s installed useing Cisco 2960 POE switches using 2X power. These 175s are all working fine with POE+.  However, on the AP275, the radio keeps shutting down and the field tech says he gets a message (via console port) saying something like, "radio shutting down due to low power'.  I cant remember the exact message, but he is heading back out again today.  I overnighted him a mid-span external POE injecter (PowerDsine 9001GO) to try again today.  Does anyone have any other suggestions?

 

Thanks!

 

Mike

Re: AP275 Radio disabled due to low power

Did the installer use the ethernet cable glands?  From the install Guide:

 

Failure to use the included Ethernet cable glands can lead to connectivity and POE issues. 

 

  1. Slide the sealing nut over the cable (without the RJ45 connector attached to the end).

  2. Slide the clamping ring over the cable.

  3. Using a crimping tool, attach the shielded RJ45 connector to the end of the cable.

  4. Remove the weatherproof cap on the Ethernet port.

  5. Insert the RJ45 connector to the Ethernet port.

  6. Screw the clamping ring onto the Ethernet port.

  7. Screw the sealing nut onto the clamping ring. 

Seth R. Fiermonti
Consulting Systems Engineer - ACCX, ACDX, ACMX
Email: seth@hpe.com
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Contributor II

Re: AP275 Radio disabled due to low power

Yes, The Glands were installed properly.  We even had him patch the 275 in right at the switch and got the same message.

Re: AP275 Radio disabled due to low power

What does the power output at the switch say for PoE details?
Seth R. Fiermonti
Consulting Systems Engineer - ACCX, ACDX, ACMX
Email: seth@hpe.com
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Guru Elite

Re: AP275 Radio disabled due to low power

Mjotech:

 

The unit needs fully compliant 802.3at power 275 draws 23W .  The AP 175 only draws 16.

 

PoE+ is not necessarily 802.3at compliant.

 

What is the cable length?



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Contributor II

Re: AP275 Radio disabled due to low power

Seth,

 

I will post the statement.  Do you know what command to use to get this statement?

Contributor II

Re: AP275 Radio disabled due to low power

consumption g1/0/6
Interface  Consumption      Admin
           Configured    Consumption (Watts)
---------- -----------  -------------------

Gi1/0/6       YES                30.0

Guru Elite

Re: AP275 Radio disabled due to low power

Mjotech,

 

Thank you for that information.  Please report back when the POE injector is installed.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Contributor II

Re: AP275 Radio disabled due to low power

OK,  we get the same alarm with the injector.  The tech consoles in, the gets the statement;

Shutting down Eth1 due to insufficient power".  Then says "shutting down Radio due to insufficient power". 

Contributor II

Re: AP275 Radio disabled due to low power

FYI.. We have a ticket open with TAC, but they dont have a clue either.

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