ESXi allows you to shape outbound traffic on standard switches. The traffic shaper restricts the network bandwidth available to any port, but you can also configure it to temporarily allow bursts of traffic to flow through a port at higher speeds.

A traffic shaping policy is defined by three characteristics: average bandwidth, peak bandwidth, and burst size.

Average Bandwidth

Establishes the number of bits per second to allow across a port, averaged over time (the allowed average load).

Peak Bandwidth

The maximum number of bits per second to allow across a port when it is sending a burst of traffic. This tops the bandwidth used by a port whenever it is using its burst bonus. This parameter can never be smaller than the average bandwidth.

Burst Size

The maximum number of bytes to allow in a burst. If this parameter is set, a port might gain a burst bonus when it does not use all its allocated bandwidth. Whenever the port needs more bandwidth than specified by Average Bandwidth, it might be allowed to temporarily transmit data at a higher speed if a burst bonus is available. This parameter tops the number of bytes that can be accumulated in the burst bonus and transferred at a higher speed.


Browse to a host in the vSphere Web Client navigator.


Click the Manage tab, and click Networking > Virtual Switches.


Select a standard switch from the list and click Edit settings.


Click Traffic shaping and enable or disable traffic shaping policy exceptions with the Status drop-down menu.

The Status policy is applied to each virtual adapter attached to the port group, not to the standard switch as a whole. If you enable the traffic policy exception, you set limits on the amount of networking bandwidth allocation for each virtual adapter associated with this particular port group. If you disable the policy, services have a clear connection to the physical network by default.


For each traffic shaping policy (Average Bandwidth, Peak Bandwidth, and Burst Size), enter a bandwidth value.


Click OK.