1131AG inline poe low power error

[danletkeman]

LOW_POWER_CLASSIC_NO_INJECTOR_CONFIGURED

Using an AIR-PWRINJ3 injector. I have tried configuring it every which way and now matter what I get this error message and the radios are off.

IOS version 123-8.JEA

Does this injector work with this AP? I'm using the 6ft cable that came with the injector.

[ethiel]

This is a known issue. The following link will walk you through exactly what you need to do.

http://www.cisco.com/en/US/products/ps6521/products_installation_guide_chapter09186a0080721420.html#wp1059924

[danletkeman]

I went throught that link and I tried all kinds of things. Nothing seemed to work for me. This is what i was doing.

either this:

power inline negotiation injector installed

or this:

power inline negotiation injector override

neither of them worked.

Any other ideas?

Thanks,

Dan.

[ethiel · Accepted solution]

Did you reboot the AP after the changes? What type of switch are you using? You might be able to disable the inline power on the switchport.

Also, you can try disabling CDP on the switchport (no cdp enable). That was my workaround until they added the power inline commands to the APs.

After any of these tests you may need to reboot before the AP will bring its radio up.

[danletkeman]

Thanks, that worked great. Any idea when this will be fixed?

[ethiel]

Well, there's not a lot they can do about it. The problem is if the switch advertises it is power capable, but that it cannot produce enough power, the AP will always need be be forced. Since injectors are passive, they cannot/should not try to re-write the packets from the switch that say the power is insufficient.

I suppose one answer would be that it will be fixed when all remaining switches support AF standard power, but I don't like that any more than you.

I have been discussing this with Cisco lately, so hopefully they will find some clever way of working arouund this, but for the forseeable future we are stuck with one of the above workarounds.

[akuachaser]

I have just run into this same problem and the link to the work arounds no longer exists. I've tried searching and come up with nothing. Any help would be greatly appreciated, thanks.

[Rob Huffman]

Hi AJ,

Have a look at this info;

http://www.cisco.com/en/US/docs/wireless/access_point/1240/installation/guide/124h_c4.html#wp1057645

Hope this helps!

Rob