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Cisco Bug: CSCut53436 - When a POE+ AP connects to 2960x w/ CDP it does not receive enough power

Last Modified

Feb 14, 2018

Products (25)

  • Cisco Catalyst 2960-X Series Switches
  • Cisco Catalyst 2960S-24PD-L Switch
  • Cisco Catalyst 2960X-24PS-L Switch
  • Cisco Catalyst 2960X-48LPS-L Switch
  • Cisco Catalyst 2960X-24PD-L Switch
  • Cisco Catalyst 2960X-24TS-LL Switch
  • Cisco Catalyst 2960S-48TD-L Switch
  • Cisco Catalyst 2960S-48LPS-L Switch
  • Cisco Catalyst 2960X-48TD-L Switch
  • Cisco Catalyst 2960X-48TS-LL Switch
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Known Affected Releases

15.0(2)EX

Description (partial)

Symptom:
Wireless AP running CDP connects to a 2960X does not get required power. It receives 13 W in stead of 16.8W. We get the following CDP debugs:
APf40f.1b73.adf8#
*Dec 21 23:19:31.795: CDP-ILP: sent cdp msg:power consumed  pwr=16800Spare Pair turned OFF and current index 0
*Dec 21 23:19:31.795: CDP-ILP: sent cdp msg:power request reqid=15325 manid=2 rlevel(3)=16800 15400 13000
*Dec 21 23:19:39.787: %CLEANAIR-6-STATE: Slot 0 disabled
*Dec 21 23:19:39.787: %CLEANAIR-6-STATE: Slot 1 disabled
*Dec 21 23:19:43.895: CDP-ILP: rcvd cdp msg:power available reqid=15325 manid=2 alevel=16800 mlevel=16800
*Dec 21 23:19:43.895: CDP-ILP: power state:NEGOTIATED event:BOTH_ID_unCHANGED unchanged
*Dec 21 23:20:27.527: CDP-ILP: sent cdp msg:power consumed  pwr=16800Spare Pair turned OFF and current index 0

Conditions:
2960x running 15.0(2)EX5. The interface the AP is connecting to has a MACRO and the AP is using CDP.
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