You can export vSphere distributed switch and distributed port group configurations to a file.
About this task
The file preserves valid network configurations, enabling distribution of these configurations to other deployments.
This functionality is available only with the vSphere Web Client 5.1 or later. VDS settings and port-group settings are imported as part of the import.
As a best practice, export the VDS configuration before preparing the cluster for VXLAN. For detailed instructions, see http://kb.vmware.com/kb/2034602.