We have just rolled out our new AP's C9105AXI-Z connecting to our 9800-CL via Flex Connect. We have found an issue when the WAN link to a site goes down and then recovers (mainly due to ISP maintenance) the AP goes into a constant disjoin/rejoin phase until we manually reboot the AP. During this, I can still ping the AP perfectly fine without drops, just it constantly drops registration to the 9800 controller and users connecting to these AP's are unable to get an IP via DHCP.
Jan 10 03:20:28.212: %CAPWAPAC_SMGR_TRACE_MESSAGE-5-AP_JOIN_DISJOIN: Chassis 1 R0/0: wncd: AP Event: AP Name: *********** Mac: *********** Session-IP: *********** CAPWAP DTLS session closed for AP, cause: DTLS server session shutdown
Jan 10 03:20:39.084: %CAPWAPAC_SMGR_TRACE_MESSAGE-5-AP_JOIN_DISJOIN: Chassis 1 R0/0: wncd: AP Event: AP Name: *********** Mac: *********** Session-IP: *********** CAPWAP DTLS session closed for AP, cause: DTLS server session shutdown
9800-CL - 17.6.4 (Latest firmware)
C9105AXI-Z - 17.6.4.56 (I think is latest?)
Ironically, we had this same type of issue running on our old AIR-AP183I-Z-K9 connecting to the old 5500 controller. Was hoping the upgrading of AP model and controller would have solved this issue.
