Edge service gateway (ESG) repair on NSX-V
If you want to repair you ESG, the best approach is to force sync the edge or redeploy it.
Both options can result in about 5-10 minutes of downtime, so you will want to plan the best time to perform this actions when users will not be impacted.
The force sync usually requires less downtime. So its better to try the force sync method first.
This documentation describes the force sync operation:
This documentation describes the redeploy operation: