Problems with V2110, synchronization and backup tunnel

[FES]

Hi,
we have two V2110 controllers in 9.21.08 in HA to manage our 800 extreme ap's with 400 local aps in each controller.
we have monitorig the controller with netskght in order to receive all the traps from de aps and controllers.
we have receiving alerts with lost backup tunel from the master controller to its foreing aps, but in the slave controller all is normal and all the aps are working fine.
Anyone have this deployment?
we have 30 sec to tunel timeout. the
The doen message and up message with 1 sec delay.
Device: 192.168.29.21
Severity: Critical
Message: STRING: "14465086085F0000" STRING: "AP name 'V-BIB-PRIMERA_1A':: disconnected from the system(poll timeout)"
Trap: apTunnelAlarmDevice: 192.168.29.21
Severity: Critical
Message: STRING: "14465086085F0000" STRING: "AP with Serial Number '14465086085F0000' has been connected to controller"
Trap: apTunnelAlarm

[Umut_Aydin]

Hi,

please take a look in to the logs of the Controller .
What do you get here?Which message.

If not please set the AP and AC log level to informational and configure a Syslog Server in order get more info's in the Controller logs. (Controller-> Logs)

Please set one of the Ap to factory default over the AP CLI ( cset f ) and delete the AP from the WebGUI as well.( AP Bulk conf)

Let's see if this maybe helps.

Check if you enabled secure connection - Controller->Network->Secure Connection.

Other option would be if you have 2 DHCP Server with overlapping IP scope for both COntroller?!

I assume HA is up.

If nothing helps please open a case and GTAC should work on this.

Regards
Umut