This event is triggered when either of the following connections are detected down by NSX Manager: (i) connection between NSX Manager and Host Firewall agent. (ii) connection between NSX Manager and Control Plane Agent. (iii) connection between Control Plane Agent to Controllers. Action required: (i) If NSX Manager to Host Firewall Agent connection is down, check NSX Manager and Firewall Agent logs to get error details. You can try Fabric Synchronize API to try and retificy this issue. (ii) If NSX Manager to Control Plane Agent connection is down, please check NSX Manager and Control Plane Agent logs to get the error detail, check whether the Control Plane Agent process is down. (iii) If Control Plane Agent to Controllers connection is down, please go to UI Installation page to check the connection status for crossponding Host. Frequency of traps: When (i) NSX Manager looses connection with Firewall agent on host or (ii) NSX Manager losses connection with Control plane agent on host or (iii) Control plane agent on Host looses connection with NSX Controllers. Affects: VMs on that Host might get affected.