You can send a synchronization request from an NSX Manager to an NSX Edge.

Run force sync when you want to synchronize the edge configuration as known to the NSX Manager to all the components.
Note: For NSX Data Center 6.2 or later, force sync avoids data loss for east-west routing traffic, however, north-south routing and bridging might experience an interruption.
In NSX 6.4.3 or earlier, NSX Manager takes the following actions during the force sync operation:
  • Deletes the configuration of the Edge appliances, starting with Index 0, and then Index 1.
  • Reboots the Edge appliances. Both Index 0 and Index 1 are rebooted simultaneously. This action results in high downtime.
  • Publishes or applies the latest configuration to the Edge appliances.
  • Closes the connection to the host.
  • If the NSX Manager is primary or stand-alone, and the edge is a logical distributed router, the controller cluster is synced.
  • Sends a message to all relevant hosts to sync the distributed router instance.
Starting with NSX 6.4.4, NSX Manager takes the following actions during the force sync operation:
  • If the Edge appliances are in a Bad state, then NSX Manager deletes the Edge configuration, reboots the bad Edge appliances, and publishes the latest configuration to the Edge appliances.
  • If the Edge appliances are not in a Bad state, then NSX Manager does not reboot the Edge appliances, and directly publishes the latest configuration to the Edge appliances. By eliminating unnecessary reboot of the Edge appliances, downtime is reduced.
  • Closes the connection to the host.
  • If the NSX Manager is primary or stand-alone, and the edge is a logical distributed router, the controller cluster is synced.
  • Sends a message to all relevant hosts to sync the distributed router instance.
Important: In a cross-vCenter NSX environment, you must first run force sync on an NSX Edge instance on the primary NSX Manager. When that is complete, force sync the NSX Edge instance on the secondary NSX Managers.

Procedure

  1. Log in to the vSphere Web Client.
  2. Click Networking & Security > NSX Edges.
  3. Select an NSX Edge instance.
  4. Click Actions (Actions) and select Force Sync.