6.5.1

Table Of Contents
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.
Bandwidth Allocation for Virtual Machine Trac
Version 3 of Network I/O Control lets you configure bandwidth requirements for individual virtual
machines. You can also use network resource pools where you can assign a bandwidth quota from the
aggregated reservation for the virtual machine traffic and then allocate bandwidth from the pool to
individual virtual machines.
About Allocating Bandwidth for Virtual Machines
Network I/O Control allocates bandwidth for virtual machines by using two models: allocation across the
entire vSphere Distributed Switch based on network resource pools and allocation on the physical
adapter that carries the traffic of a virtual machine.
Network Resource Pools
A network resource pool represents a part of the aggregated bandwidth that is reserved for the virtual
machine system traffic on all physical adapters connected to the distributed switch.
For example, if the virtual machine system traffic has 0.5 Gbps reserved on each 10 GbE uplink on a
distributed switch that has 10 uplinks, then the total aggregated bandwidth available for VM reservation
on this switch is 5 Gbps. Each network resource pool can reserve a quota of this 5 Gbps capacity.
vSphere Networking
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