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 the traffic rate.

If the physical adapter supports SR-IOV, you can enable it and configure the number of virtual functions to use for virtual machine networking.

1

In the vSphere Web Client, navigate to a host.

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

Click OK.