Troubleshooting Tip: CAPWAP was disconnected, and no attempts are being made to re-establish the connection

[ibasha]

Description	This article describes how to resolve CAPWAP disconnection in FortiExtender.
Scope	FortiExtender-2xx, 1xx, 5xx.
Solution	Scenario: FortiExtender has lost connection CAPWAP and does not re-establish the connection. It has been observed that the FortiExtender is stuck in Sulking mode/CWWS_MAINIP and the EXTD ac_disc daemon is enabled, but no outputs are seen. Extender status:     name : FEX-01     mode : CAPWAP     session : active       fext-addr : 0.0.0.0       ingress-intf :       fext-wan-addr : 100.x.x.x       controller-addr : 0.0.0.0:5246,25246       controller-name :       management-state : CWWS_MAINIP         session : standby       fext-addr : 0.0.0.0       ingress-intf :       fext-wan-addr : 100.x.x.x       controller-addr : 0.0.0.0:5246,25246       controller-name :       management-state : CWWS_SULKING (S)     base-mac : AC:71:2E:xx:xx:xx     network-mode : ip-passthrough (capwap)     fgt-backup-mode : backup     discovery-type : broadcast     discovery-interval : 5     echo-interval : 30     report-interval : 30     statistics-interval : 120     mdm-fw-server : fortiextender-firmware.forticloud.com     os-fw-server : fortiextender-firmware.forticloud.com However, after restarting the Extender daemon, the discover request/response works fine: get system app-status             name type command pid state            SYSLOGD APP_T_MONIPID syslogd 1113 RUNNING            CONFIG APP_T_INFRA json_config 1116 RUNNING            ZEBRA APP_T_MONIPID zebra 1118 RUNNING            OSPFD APP_T_MONIPID ospfd 1120 RUNNING            NETD APP_T_INFRA netd 1123 RUNNING            EXTD APP_T_MONIHB extenderd 1359 RUNNING execute restartapp EXTD 1359 get extender status Extender Status     name : AN-02024-FEX-01     mode : CAPWAP     session : active       fext-addr : 192.168.200.99       ingress-intf : lan       fext-wan-addr : 100.93.231.128       controller-addr : 192.168.200.110:5246,25246       controller-name : FGT40FTK2209CX1S       uptime : 0 days, 0 hours, 2 minutes, 26 seconds       management-state : CWWS_RUN     session : standby       fext-addr : 0.0.0.0       ingress-intf :       fext-wan-addr : 100.93.231.128       controller-addr : 0.0.0.0:5246,25246       controller-name :       management-state : CWWS_SULKING (S)     base-mac : AC:71:2E:64:96:F6     network-mode : ip-passthrough (capwap)     fgt-backup-mode : backup     discovery-type : broadcast     discovery-interval : 5     echo-interval : 30     report-interval : 30     statistics-interval : 120     mdm-fw-server : fortiextender-firmware.forticloud.com     os-fw-server : fortiextender-firmware.forticloud.com If the issue persists, raise a ticket with Fortinet Technical Support and provide the following debug logs: get modem status get extender status show full execute log event display debug info execute debug EXTD state on execute debug EXTD ac_disc on execute debug EXTD event on execute debug EXTD info on execute debug log-to-console on Disable the debug once done: execute debug log-to-console on execute debug clear