You can migrate one vSphere Distributed Switch at a time to NSX-T.

Overview of Migration Process

During the migration you will complete the following steps:
  • Prepare your NSX-T environment.
    • Configure a compute manager in the NSX-T environment.
    • Add the vCenter Server system that manages the vSphere Distributed Switch (versions 6.5.0 and 6.6.0) you want to migrate.
    • Start the migration coordinator service.
  • Import configuration from vSphere.
    • Enter the details of your vSphere environment.
    • The configuration is retrieved and pre-checks are run.
  • Select the vSphere Distributed Switch that you want to migrate.
  • Resolve issues with the configuration.

    Provide answers to configuration questions that must be resolved before you can migrate your vSphere environment to NSX-T. Resolving issues can be done in multiple passes by multiple people.

  • Migrate configuration.
    • After all configuration issues are resolved, you can import the configuration to NSX-T. Configuration changes are made on NSX-T, but no changes are made to the vSphere environment yet.
  • Migrate Hosts.
    • NSX-T software is installed on the hosts. VM interfaces are disconnected from vSphere Distributed Switch port groups and connected to the new NSX-T segments.
      Caution: If you select In-Place migration mode, there is a traffic interruption during the Migrate Hosts step. However, if you select Maintenance migration mode, traffic interruption does not occur.
  • Finish Migration.
    • After you have verified that the migrated networking is working correctly, you can click Finish to clear the migration state. You can now migrate another vSphere Distributed Switch to NSX-T.