assigned to network traffic across multiple connections for a session with
quality of service (QoS)-supported routers. Four TCP/IP streams (real-time,
interactive, background, and bulk) and one UDP/RTP stream (for voice) are
available to carry ICA traffic between the user device and the server. Each
virtual channel is associated with a specific priority and transported in the
corresponding connection. You can set the channels independently, based on the
TCP port number used for the connection. The four priorities are:
- Very High –
For real-time activities, such as webcam conferences.
- High – For
interactive elements, such as the screen, keyboard, and mouse.
- Medium – For
bulk processes, such as client drive mapping.
- Low – For
background activities, such as printing.
XenDesktop support multiple channel streaming connections for Virtual Delivery
Agents (VDAs) installed on Windows 8 and Windows 7 environments. Work with your
company's network administrator to ensure the Common Gateway Protocol (CGP)
ports configured in the
Multi-Port Policy setting are assigned correctly on
the network routers.
The Secure Sockets
Layer (SSL) connections are only supported when the connections are traversing
a NetScaler Gateway that supports multi-stream. When running on an internal
corporate network, multi-stream connections with SSL are not supported.
Quality of service
(QoS) is supported only when multiple session reliability ports, or the CGP
ports, are configured.
Caution: Use transport security when using this feature. Citrix
recommends using Internet Protocol Security (IPsec) or Secure Sockets Layer