11.4.0 Peer device "disconnected" but syncing

Hi Ana,

I suspect your config sync and failover is via production interface and device trust between the peers were made via management interface.

That is the reason you don't face any issue with config sync and failover, though the peer is showing disconnected.

It is most likely to be a issue with device trust or mgmt connectivity issue.

Possible cause-1: If there is connectivity issue between trusted peers on management port, it will show device disconnected.

It will be fixed once mgmt reach-ability is made.

Possible cause-2: Since recently you have upgraded the firmware, it is most likely to be a certificate issue. No connectivity issue between peers, but peer certificate got expired or need to be renewed.

In this case, i suggest you to renew the device certificate of both peers and re-add in device trust peer list and accordingly changes to be done at Device Group as well.

Please let me know if you have any queries and also update me the status.

Thanks and Regards

Narendren S