瘦WAP712C离线

MSG360-4+两台瘦WAP712C，运作22小时左右，两台AP就会离线，重启MSG360-4也无法恢复，只能通过快速配置恢复出厂设置。MSG360-4目前版本为Release 5272，试过升级，但升级后恢复出厂设置都无法连上两台AP，只能恢复现在的版本，以下为离线时的日志：

<190>Sep 16 23:57:11 2019 H3C %%10SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=192.168.0.254-User=admin; Command is quit 

<189>Sep 16 23:57:11 2019 H3C %%10SHELL/5/SHELL_LOGOUT: admin logged out from 192.168.0.254.  

<188>Sep 17 00:02:25 2019 H3C %%10CWS/4/CWS_AP_DOWN: CAPWAP tunnel to AP 88df-9e93-10e0 went down. Reason: Neighbor dead timer expired. 

 <190>Sep 17 00:02:25 2019 H3C %%10APMGR/6/APMGR_AP_OFFLINE: AP 88df-9e93-10e0 went offline. State changed to Idle. 

 <188>Sep 17 00:02:28 2019 H3C %%10CWS/4/CWS_AP_DOWN: CAPWAP tunnel to AP 88df-9e93-5500 went down. Reason: Neighbor dead timer expired.  

<190>Sep 17 00:02:28 2019 H3C %%10STAMGR/6/STAMGR_CLIENT_OFFLINE: Client 30b4-9e27-a75d went offline from BSS 88df-9e93-5511 with SSID GSSUSA on AP 88df-9e93-5500. State changed to Unauth. Reason:AP down. 

<190>Sep 17 00:02:28 2019 H3C %%10APMGR/6/APMGR_AP_OFFLINE: AP 88df-9e93-5500 went offline. State changed to Idle. <189>Sep 17 00:03:49 2019 H3C %%10WEB/5/LOGIN: admin logged in from 192.168.0.254 

<189>Sep 17 00:07:58 2019 H3C %%10SHELL/5/SHELL_LOGIN: admin logged in from 192.168.0.254. 

<190>Sep 17 00:07:59 2019 H3C %%10SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=192.168.0.254-User=admin; Command is super  

<190>Sep 17 00:07:59 2019 H3C %%10SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=192.168.0.254-User=admin; Command is system-view