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.
Before you begin
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.
About this task
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.
- In the vSphere Web Client, navigate to the distributed switch.
- On the Manage tab, click Resource Allocation.
- Click System Traffic.
You see the bandwidth allocation for the types of system traffic.
- 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.
- 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.
- 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.
- In the Limit text box, set the maximum bandwidth that system traffic of the selected type can use.
- 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.