有2个AP WA6320-C用WIFI连上上不了网，DHCP分配不到wifi 电脑IP

有个AP WA6320-C（172.16.12.18）用WIFI连上上不了网，DHCP分配不到wifi 电脑IP，AC检查ap状态IP都有，指示灯也正常，许可都有注册。

<H3C WX2540H>display wlan ap all

Total number of APs: 16

Total number of connected APs: 15

Total number of connected manual APs: 15

Total number of connected auto APs: 0

Total number of connected common APs: 15

Total number of connected WTUs: 0

Total number of inside APs: 0

Maximum supported APs: 48

Remaining APs: 33

Total AP licenses: 22

Local AP licenses: 22

Server AP licenses: 0

Remaining local AP licenses: 7

Sync AP licenses: 0

                                 AP information

 State : I = Idle,      J  = Join,       JA = JoinAck,    IL = ImageLoad

         C = Config,    DC = DataCheck,  R  = Run,   M = Master,  B = Backup

AP name                        APID  State Model           Serial ID

1451-7e05-d160                 17    R/M   WA6320-C        219801A2BS8213E004YY

1451-7e1c-ff20                 18    R/M   WA6320-C        219801A2BS8215E007FC

4873-97b8-1020                 1     R/M   WA6320-C        219801A2BS8216E004V1

4873-97b8-1160                 2     R/M   WA6320-C        219801A2BS8216E004VC

4873-97b8-1200                 3     R/M   WA6320-C        219801A2BS8216E004VJ

4873-97b8-14a0                 6     R/M   WA6320-C        219801A2BS8216E004W6

4873-97b8-1500                 4     R/M   WA6320-C        219801A2BS8216E004W9

9c06-1bd8-1ba0                 8     R/M   WA5320-C        219801A18Q8174E00001

9c06-1bd8-2180                 7     R/M   WA5320-C        219801A18Q8174E00048

9c06-1bd8-2da0                 9     R/M   WA5320-C        219801A18Q8174E00145

9c06-1bd8-3d40                 10    R/M   WA5320-C        219801A18Q8174E00270

wuliuqu-ap001-box              22    R/M   WA6320S-E       219801A34A8235E005GP

wuliuqu-ap003-gate             25    R/M   WA6320S-E       219801A34A8236E0044R

smallbox-office-ap001          16    I     WA6320-C        219801A2BS8213E004ZC

smallbox-office-ap002          15    R/M   WA6320-C        219801A2BS8213E004Z2

wuliuqu-ap002-rainbox          24    R/M   WA6320S-E       219801A34A8235E002YK

AP name                        APID  State Model           Serial ID

1451-7e05-d160                 17    R/M   WA6320-C        219801A2BS8213E004YY

1451-7e1c-ff20                 18    R/M   WA6320-C        219801A2BS8215E007FC

smallbox-office-ap001          16    I     WA6320-C        219801A2BS8213E004ZC（上不了网已经拔线）

smallbox-office-ap002          15    R/M   WA6320-C        219801A2BS8213E004Z2（上不了网，排查问题中）

核心交换机172.16.12.254（H3C S500v2）同时也是提供上网段IP的DHCP服务，无线控制器172.16.12.252（WX2540H）连接的是核心的4网口.核心交换机通过光口20口 通过光纤转发 连接新办公室ap的poe交换机172.16.12.250（网口全部设置了TRUNK类型）(S5008PV5-2)10光口,poe交换机GigabitEthernet1/0/1,3,5,7连接到4台AP (4台WA6320-C，2台上的到网，2台分配不了wifi连接设备的上网段IP，二无法上网)。发现此现象的前的操作是前段时间，把这2台AP的name原本是默认mac的改成smallbox-office-ap001/ap002.过几天拔线确认，这2台无法上网（连接的设备自动分配的是169.254开头的ip二是上网段IP）。