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Planning for Quality of Service (QoS)

Lync Server 2010
 

Topic Last Modified: 2011-09-30

Each communication type that you enable for Quality of Service (QoS) must use a nonoverlapping port range for its traffic. Nonoverlapping port ranges are set by default for audio/video when you install Microsoft Lync Server 2010. You can change these ranges if you need to.

The default port ranges for Lync Server 2010 are as shown in the following table. You can actually use any port from 1024 to 65535. As noted earlier, DSCP marking is disabled by default. If you are using QoS for application sharing, you will need to adjust the port ranges so that none of them overlap with the others. These are the default values:

 

Communication type Port range

Audio

49152 to 57500

Video

57501 to 65535

Application sharing

49152 to 65535

Audio and video traffic on clients require a minimum of 40 ports, 20 for audio and 20 for video. By default, all communication types on the client use the entire port range from 1024 to 65535, so you will need to change these port ranges in order to enable QoS. Management is easier if the port range on the client is within the port range for the same communication type, but the only requirement is that each server and each client have a nonoverlapping port range.

You can use the following worksheet to ensure that you have all the information that you need to enable QoS.

 

Component Communication type Executable name DSCP value Priority

A/V Conferencing service

Audio

AVMCUSvc.exe

Video

AVMCUSvc.exe

A/V Edge service

Audio

MediaRelaySvc.exe

Video

MediaRelaySvc.exe

Application sharing

MediaRelaySvc.exe

Peer-to-peer file transfer

MediaRelaySvc.exe

Application Sharing service

Application sharing

ASMCUSvc.exe

Mediation Server

Audio

MediationServerSvc.exe

Response Group application

Audio

OcsAppServerHost.exe

Conference Announcement service

Audio

OcsAppServerHost.exe

UCMA applications

Audio

OcsAppServerHost.exe

Lync 2010

Audio

Communicator.exe

Video

Communicator.exe

Application sharing

Communicator.exe

Peer-to-peer file transfer

Communicator.exe

Lync 2010 Attendant

Audio

Communicator.exe

Lync 2010 Phone Edition

Audio

Communicator.exe

 
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