As a result, the port range for audio would be ports 50000 through 50001, inclusive. If the first port is port 50000 and there are a total of two ports, that means the second port must be port 50001 (port ranges have to be contiguous). If the audio port count is 2 (which is not a valid value, but is used here for illustration purposes), that means that only two ports are allocated for audio. The port start indicates the first port used for that modality for example, if the audio port start is equal to 50000 that means that the first port used for audio traffic is port 50000. Get-CsService -MediationServer | Select-Object Identity, AudioPortStart, AudioPortCountĪs you can see in the preceding commands, each port type – audio, video, and application sharing – is assigned two separate property values: the port start and the port count. Get-CsService -ApplicationServer | Select-Object Identity, AudioPortStart, AudioPortCount Get-CsService -ConferencingServer | Select-Object Identity, AudioPortStart, AudioPortCount, VideoPortStart, VideoPortCount, AppSharingPortStart, AppSharingPortCount (Which, in turn, means that none of these ranges are unique.) You can verify the existing port ranges for your Conferencing, Application, and Mediation servers by running the following three commands from within the Skype for Business Server Management Shell: With QoS, each modality must have a unique set of ports: if you use ports 10000 through 10999 for video, then you'll have to use a different range (for example, 11000 through 11999, for audio).īy default, audio and video port ranges do not overlap in Skype for Business Server however, the port ranges assigned to application sharing overlap with both the audio and video port ranges. This can create problems for Quality of Service, because the port ranges overlap. Similarly, suppose you reserve ports 10000 through 10999 for video, but then reserve ports 10500 through 11999 for audio.
If you do not, QoS will not work as expected. That means that you must also reserve ports 10000 through 10999 for video on your Application and Mediation servers. To use a simple example, suppose you use ports 10000 through 10999 for video on your Conferencing servers. To implement Quality of Service, you should configure identical port ranges for audio, video, and application sharing on your Conferencing, Application, and Mediation servers furthermore, those port ranges must not overlap in any way.
#What port does skype use qos how to#
This article describes how to configure port ranges and a Quality of Service policy for your Conferencing, Application, and Mediation servers.