F5 Split Brain HA issue

I recently faced an F5 Split Brain issue, where both F5 boxes acted as Active/Active. Here is the list of troubleshooting steps you need to check to fix the issue.

1) Check Network Reachability between HA Interfaces of both F5 Devices

2) Verify Configuration Sync Status (tmsh show cm sync-status)

3) Check both the TCP/UDP ports are allowed between two F5 Devices

4) Check the HA failover status (  show /cm failover-status )

5) Check the Port Lockdown settings on Self IP ( HA Interface)

6) Check the Clock Sync between two F5 Boxes

7) Check the Certificate Issues

I was able to solve the issue with this troubleshooting methodology.