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e to low PoE, radio is transmitting at degraded power

Any idea how this impact the Access point?

Due to low PoE, radio is transmitting at degraded power

  • Other Wireless - Mobility Subjects
4 REPLIES
Gold

Re: e to low PoE, radio is transmitting at degraded power

I assume this is a 1252 AP. This message means that the AP isn't getting the full 20W of power to fully bring up both radios. Depending on how much power it is getting will determine which data rates and number of transmitters will be available.

http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn421120.html#wp366903

Re: e to low PoE, radio is transmitting at degraded power

Thanks for answer, in the 1252 show that message but the radios are UP:

Enable UP both radios

I just wodering why the two radios are up, it means that there is no impact in the AP?

Re: e to low PoE, radio is transmitting at degraded power

or does it impact with the N protocol?

Hall of Fame Super Red

Re: e to low PoE, radio is transmitting at degraded power

Hi Alejandro,

Just to add a note to the great tips from Dan (+5 points here Dan :) Here is the reference for this enquiry;

1250 Access Point PoE Enhancements

The dual-radio 1250 series access point can operate in four different modes when powered using Power over Ethernet (PoE):

•20.0 W (Full Power)-This mode is equivalent to using a power injector or an AC/DC adapter.

•16.8 W-Both transmitters are used but at reduced power. Legacy data rates are not affected, but the M0 to M15 data rates are reduced. Throughput should be minimally impacted because all data rates are still enabled. The range is affected because of the lower transmit power. All receivers remain enabled.

•15.4 W-Only a single transmitter is enabled. Legacy data rates and M0 to M7 rates are minimally affected. M8 to M15 rates are disabled because they require both transmitters. Throughput is better than the legacy rate but less than the 20 and 16.8 W power modes.

•11.0 W (Low Power)-The access point runs, but both radios are disabled.

http://www.cisco.com/en/US/docs/wireless/controller/release/notes/crn421120.html#wp366903

Hope this helps!

Rob

"May your heart always be joyful And may your song always be sung May you stay forever young " - Dylan
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