This issue is resolved in NSX-T 4.0 available at VMware downloads.
Workaround:
To work around this issue, we will need to restart the RCPM (Routing Control Plane Manager) service on the edge node(s).
- login to the Edge nodes using root credentials and run:
service nsx-edge-rcpm restart
- Then once services have restarted, in the NSX-T UI mark the alarms as resolved.
Please note that this workaround is disruptive to production datapath so it is advisable to perform it in a scheduled maintenance window, the downtime is expected to be from 30 seconds to 1 minute.