Citrix SD-WAN Center 11.4

MOS for applications

The mean opinion score (MOS) provides a numerical measure of the quality of the experience that an application delivers to end users. It is primarily used for VoIP applications. In Citrix SD-WAN, MOS is also used to assess the quality of non-VoIP applications by judging the traffic as if it were a VoIP call.

Citrix SD-WAN Center calculates and displays MOS for the traffic that passes through the virtual path. Enable the Estimate MOS option for each application on every Citrix SD-WAN appliance to display the MOS scores of these applications in Citrix SD-WAN Center.

For more information about enabling MOS for applications in Citrix SD-WAN, see Add Rule Groups and Enable MOS.


Enable the Track Performance option, under Rules to estimate MOS for applications and display it in Citrix SD-WAN Center. For more information on rules, see Rules by IP address and port number.

To view MOS for applications:

In Citrix SD-WAN Center, navigating to Reporting > Applications, and in the timeline control select a time period.

You can select and view reports of a particular time frame by using the timeline controls. For more information, see, Timeline controls.

You can also create, save and open report views. For more information, see, Manage views.

localized image

You can view the following metrics:

  • Name: Name of the application.
  • Average Virtual WAN MOS: Average quality score calculated over the selected time period.
  • Lowest Virtual WAN MOS: Lowest quality score calculated within the selected time period.  

The scores are graded as follows:

  • 5 – Users are very satisfied.
  • 4 – Users are satisfied.
  • 3 – Users are dissatisfied.
  • 2 – Users are very dissatisfied.
  • 1 – Not recommended.
MOS for applications

In this article