To resolve this issue, before removing a Distributed Port Group, verify that:
- All virtual machines connected to the corresponding labeled network are migrated to a
different labeled network. - All VMkernel adapters connected to the distributed port group are migrated to a different
port group, or are deleted.
You can safely remove the Distributed Port Group after all the ports connected to the Port Group are migrated to a different labeled network.
For more information, see the
Setting Up Networking with vSphere Distributed Switches section in the
vSphere Networking Guide.