WX3520终端掉线

Client 0658-17b9-901c went offline from BSS bcd0-ebd7-deb3 with SSID Guardian-Staff on AP B2G-W-04-N02 Radio ID 2. State changed to Unauth. Reason: AC received message for deleting the client entry.
首先有这样一条下线日志，后面AP会20s后重新上线，然后出现下面日志

Client 0658-17b9-901c roamed from BSSID bcd0-ebd7-deb3 on AP B2G-W-04-N02 Radio ID 2 of AC IP 127.0.0.1 to BSSID bcd0-ebd7-deb3 on AP B2G-W-04-N02 Radio ID 2 of AC IP 127.0.0.1 successfully.
为什么会有这种从原AP漂移到原AP的日志呢，10s后出现下面这条日志就会掉线

Client 0658-17b9-901c went offline from BSS bcd0-ebd7-deb3 with SSID Guardian-Staff on AP B2G-W-04-N02 Radio ID 2. State changed to Unauth. Reason: AC received message for deleting the client entry.
后面就是这些日志

STAMGR/6/STAMGR_CLIENT_ONLINE: Client 0658-17b9-901c went online from BSS bcd0-ebd7-deb3 vlan 218 with SSID Guardian-Staff on AP B2G-W-04-N02 Radio ID 2. State changed to Run.
%Feb 28 14:30:40:750 2023 AC-1 STAMGR/6/STAMGR_CLIENT_SNOOPING: Detected client IP change: Client MAC: 0658-17b9-901c, IP: 10.1.218.47, -NA-, -NA-, -NA-, Username: -NA-, AP name: B2G-W-04-N02, Radio ID: 2, Channel number: 153, SSID: Guardian-Staff, BSSID: bcd0-ebd7-deb3.
%Feb 28 14:30:40:750 2023 AC-1 STAMGR/6/STAMGR_ROAM_SUCCESS: Client 0658-17b9-901c roamed from BSSID bcd0-ebd7-deb3 on AP B2G-W-04-N02 Radio ID 2 of AC IP 127.0.0.1 to BSSID bcd0-ebd7-deb3 on AP B2G-W-04-N02 Radio ID 2 of AC IP 127.0.0.1 successfully. 

目前都是苹果手机有问题，会断开连接，断开时获取不到地址，过一会又能自动重连上 
目前AC版本：H3C Comware Software, Version 9.1.053, ESS 1053P03

断联是什么原因呢，从log中能看出吗，还是需要debug，是不是控制器版本太老了