This topic describes the general guidelines that you can follow to troubleshoot any problem with NSX for vSphere.
Go to the NSX Dashboard and see if there are any errors or warnings displayed for a component.
Go to Monitor tab of the primary NSX Manager, and see if there are any triggered system events. For more details on system events and alarms, refer to NSX Logging and System Events.
Use the GET api/2.0/services/systemalarms API to view alarms on NSX object. For more information on API, refer to NSX API Guide.
Resolve the problem as described in the NSX Troubleshooting Guide.
If your problem is not resolved, download the technical support logs and contact VMware support. See "How to file a Support Request in My VMware". For more information on how to download logs, refer NSX Logging and System Events.