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Cisco AIR-CAP2702 getting Medium Power on 2930F

Hello people,

 

When I connect Cisco AIR-CAP2702 Access Points to Aruba 2930F switches, 9 times out of 10 they come up with "Medium Power (15.4W)". Rarely they manage full power.

 

Things I have tried:

 

  • Activate ”Pre-standard 802.3af switches” on APs
  • Activate ”power-over-ethernet pre-std-detect” on switches
  • Configure ”power-over-ethernet critical” on switches' interfaces towards AP’s
  • Deactivate LLDP on switches' interfaces towards AP’s

None of it made any difference.

 

Have anybody experienced (and solved) anything similar?

 

 

Lars

MVP Expert

Re: Cisco AIR-CAP2702 getting Medium Power on 2930F

Greetings!

 

Could you provide the output of 'show power-over-ethernet' and 'show power-over-ethernet <port>' so we can see how the switch is allocating power to the port, and the available power budget?

 

Also, if there are any log entries being generated when an AP is connected, a sanitized version of those may also be useful.



Matthew Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com   |   Matt @ Twitter
New Contributor

Re: Cisco AIR-CAP2702 getting Medium Power on 2930F

Solved it.

 

On the switchport connected to the AP, you need this configuration:

 

poe-lldp-detect enabled

It will come up as low power, transition to medium power and finally settle on full power.

 

 

Lars

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