A physical adapter can become a bottleneck for network traffic if the adapter speed does not match application requirements. You can change the connection speed and duplex of a physical adapter to transfer data in compliance with traffic rate.


  1. Browse to a host in the vSphere Web Client navigator.
  2. Click the Manage tab, and select Physical adapters from Networking.

    The physical network adapters of the host appear in a table that contains details for each physical network adapter.

  3. Select the physical network adapter from the list and click Edit.
  4. Select speed and duplex mode of the physical network adapter from the drop-down menu.
  5. (Optional) If the physical adapter supports SR-IOV, enable it and configure the number of virtual functions to use for virtual machine networking.
  6. Click OK.