Here's the "sh run all"  interface config, anyway switches are brand new and config is very basic, just a data VLAn in access mode.   interface GigabitEthernet1/0/2 switchport access vlan 111 switchport mode access no switchport nonegotiate no switchport protected no switchport block unicast no switchport block multicast switchport port-security maximum 65535 vlan voice no switchport port-security mac-address sticky no ip arp inspection trust ip arp inspection limit rate 15 burst interval 1 ip arp inspection limit rate 15 load-interval 300 carrier-delay 2 no shutdown tx-ring-limit 0 tx-queue-limit 0 power inline auto max 30000 cdp tlv location cdp tlv server-location cdp tlv app ipv6 mld snooping tcn flood snmp trap mac-notification change added snmp trap mac-notification change removed snmp trap link-status mls qos cos 0 mls qos dscp-mutation Default DSCP Mutation Map no onep application openflow exclusive arp arpa arp timeout 14400 spanning-tree port-priority 128 spanning-tree cost 0 channel-group auto hold-queue 75 in hold-queue 40 out ip igmp snooping tcn flood I've also seen this log just before AP came back in IEEPD status : 001372: Sep 12 12:37:15.179: CDP-AD: Aging entry for AP5C5A.C799.428A, on interface GigabitEthernet1/0/1 001373: Sep 12 12:37:15.179: CDP-EV: Notify registered clients about the entry deletion from CDP cache for GigabitEthernet1/0/1 ... View more

HTY-B486-1-1TC01A-ED(config-if)#no shut 000388: Sep 12 09:17:13.147: ILP uses DC Disconnect(Gi1/0/1): state= ILP_SHUT_OFF_S, event= CLI_START_DETECT_EV 000389: Sep 12 09:17:13.147: ILP uses DC Disconnect(Gi1/0/1): state= ILP_DETECTING_S, event= CLI_START_DETECT_EV 000390: Sep 12 09:17:14.678: ILP uses DC Disconnect(Gi1/0/1): state= ILP_DETECTING_S, event= IEEE_CLASS_DONE_EV 000391: Sep 12 2019 09:17:14.678: %ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD 000392: Sep 12 2019 09:17:15.143: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down 000393: Sep 12 09:17:15.663: ILP uses DC Disconnect(Gi1/0/1): state= ILP_PD_DETECTED_S, event= IEEE_PWR_GOOD_EV 000394: Sep 12 2019 09:17:15.663: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted 000395: Sep 12 2019 09:17:15.681: %SYS-5-CONFIG_I: Configured from console by FP16098 on vty0 (10.225.239.58) 000396: Sep 12 09:17:18.463: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= PHY_LINK_UP_EV 000397: Sep 12 2019 09:17:20.459: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up 000398: Sep 12 2019 09:17:21.462: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up 000399: Sep 12 2019 09:17:24.657: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down 000400: Sep 12 2019 09:17:25.660: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down 000401: Sep 12 09:17:26.506: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= PHY_LINK_UP_EV 000402: Sep 12 2019 09:17:28.502: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up 000403: Sep 12 2019 09:17:29.501: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up 000404: Sep 12 09:19:26.127: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000405: Sep 12 09:19:26.127: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000406: Sep 12 09:19:26.130: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000407: Sep 12 09:19:27.130: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000408: Sep 12 09:19:27.130: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000409: Sep 12 09:19:28.129: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000410: Sep 12 09:19:28.129: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000411: Sep 12 09:19:28.129: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000412: Sep 12 09:19:56.491: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV 000413: Sep 12 09:19:56.491: ILP uses DC Disconnect(Gi1/0/1): state= ILP_LINK_UP_S, event= ILP_POWER_POLICE_DISABLE_EV ... View more

Hi,   8.3.150.0 ... View more

Hi,   HTY-B486-1-1TC01A-ED2960#sh run int gi1/0/1 Building configuration... Current configuration : 90 bytes ! interface GigabitEthernet1/0/1 switchport access vlan 222 switchport mode access end Before the crash : HTY-B486-1-1TC01A-ED2960#sh cdp neighbors gi1/0/1 detail ------------------------- Device ID: AP5C5A.C7B8.86A0 Entry address(es): IP address: 10.78.16.125 IPv6 address: FE80::5E5A:C7FF:FEB8:86A0 (link-local) Platform: cisco AIR-AP2802E-S-K9, Capabilities: Router Trans-Bridge Interface: GigabitEthernet1/0/1, Port ID (outgoing port): GigabitEthernet0 Holdtime : 118 sec Version : Cisco AP Software, ap3g3-k9w8 Version: 8.5.140.0 Technical Support: http://www.cisco.com/techsupport Copyright (c) 2014-2015 by Cisco Systems, Inc. advertisement version: 2 Power drawn: 26.100 Watts Power request id: 932, Power management id: 2 Power request levels are:26100 15400 0 0 0 Management address(es): IP address: 10.78.16.125 ... View more

Thank you for your answer : Switch seems to provide enough power : HTY-xxxxxxxxxxxxxxxxxxx#sh power inline Module Available Used Remaining (Watts) (Watts) (Watts) ------ --------- -------- --------- 1 370.0 130.5 239.5 Interface Admin Oper Power Device Class Max (Watts) --------- ------ ---------- ------- ------------------- ----- ---- Gi1/0/1 auto on 26.1 Ieee PD 4 30.0 Gi1/0/2 auto on 26.1 Ieee PD 4 30.0 Gi1/0/3 auto on 26.1 Ieee PD 4 30.0 Gi1/0/4 auto on 26.1 Ieee PD 4 30.0 Gi1/0/5 auto on 26.1 Ieee PD 4 30.0 ... View more