The migration process includes setting up a new NSX-T environment and running the migration coordinator. You also might need to change your existing NSX for vSphere environment to ensure that it can migrate to NSX-T.

Caution:

Deploy a new NSX-T environment to be the destination for the NSX for vSphere migration.

During the Import Configuration step, all Edge node interfaces in the destination NSX-T environment are shut down. If the destination NSX-T environment is already configured and is in use, starting the configuration import will interrupt traffic.

During the migration you will complete the following steps:
  • Create a new NSX-T environment.
    • Deploy an NSX Manager appliance to create the NSX-T environment.

      Install the NSX Manager appliances on ESXi hosts that are not part of the NSX for vSphere environment that is migrating.

    • Configure a compute manager in the NSX-T environment. Add the vCenter Server as a compute resource. Use the exact IP or hostname specified in NSX for vSphere vCenter Server registration.
    • Deploy additional NSX Manager appliances to create a cluster.
    • Start the migration coordinator service.
    • If you want to import users from NSX for vSphere, set up VMware Identity Manager.
    • Create an NSX-T IP pool to use for the NSX-T Edge TEPs. These IPs must be able to communicate with all existing NSX for vSphere VTEPs.
  • Import configuration from NSX for vSphere.
    • Enter the details of your NSX for vSphere environment.
    • The configuration is retrieved and pre-checks are run.
  • Resolve issues with the configuration and deploy NSX-T Edge nodes.
    • Review Messages and the reported configuration issues to identify any blocking issues or other issues that require a change to the NSX for vSphere environment.
      • If you make any changes to the NSX for vSphere you must restart the migration and import the configuration again.
    • Deploy NSX Edge nodes.
      • Deploy the correct number of appropriately sized NSX-T Edge appliances.
      • Join the Edge nodes to the management plan from the command line.
    • Provide answers to configuration questions that must be resolved before you can migrate your NSX for 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 NSX for vSphere environment yet.
  • Migrate Edges.
    • Routing and Edge services are migrated from NSX for vSphere to NSX-T.
      Caution: There is an interruption of North-South traffic during the Migrate Edges step. All traffic that was previously traversing through the Edge Services Gateways (North-South traffic) moves to the NSX-T Edges.
  • Migrate Hosts.
    • NSX for vSphere software is removed from the hosts, and NSX-T software is installed. VM interfaces are connected to the new NSX-T segments.
      Caution: There is a traffic interruption during the Migrate Hosts step.
  • Finish Migration.
    • After you have verified that the new NSX-T environment is working correctly, you can finish the migration, which clears the migration state.