Assign bandwidth for host management, virtual machines, iSCSI storage, NFS storage, vSphere vMotion, vSphere Fault Tolerance, Virtual SAN, and vSphere Replication on the physical adapters that are connected to a vSphere Distributed Switch.

To enable bandwidth allocation for virtual machines by using Network I/O Control, configure the virtual machine system traffic. The bandwidth reservation for virtual machine traffic is also used in admission control. When you power on a virtual machine, admission control verifies that enough bandwidth is available.

Verify that vSphere Distributed Switch is version 6.0.0 and later.

Verify that Network I/O Control on the switch is version 3.

Verify that Network I/O Control is enabled. See Enable Network I/O Control on a vSphere Distributed Switch.

1

In the vSphere Web Client, navigate to the distributed switch.

2

On the Manage tab, click Resource Allocation.

3

Click System Traffic.

You see the bandwidth allocation for the types of system traffic.

4

Select the traffic type according to the vSphere feature that you want to provision and click Edit.

The network resource settings for the traffic type appear.

5

From the Shares drop-down menu, edit the share of the traffic in the overall flow through a physical adapter.

Network I/O Control applies the configured shares when a physical adapter is saturated.

You can select an option to set a pre-defined value, or select Custom and type a number from 1 to 100 to set another share.

6

In the Reservation text box, enter a value for the minimum bandwidth that must be available for the traffic type.

The total reservation for system traffic must not exceed 75% of the bandwidth supported by the physical adapter with the lowest capacity of all adapters connected to the distributed switch.

7

In the Limit text box, set the maximum bandwidth that system traffic of the selected type can use.

8

Click OK to apply the allocation settings.

vCenter Server propagates the allocation from the distributed switch to the host physical adapters that are connected to the switch.