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Quality of Service (QoS) policy

APPLIES TO:
  • Parallels Remote Application Server

Network administrators can use QoS to guarantee throughput for mission-critical applications so that their transactions can be processed in an acceptable amount of time. Network administrators can also use QoS to manage User Data Protocol (UDP) traffic. Unlike Transmission Control Protocol (TCP), UDP is an inherently unreliable protocol that does not receive feedback from the network and, therefore, cannot detect network congestion. Network administrators can use QoS to manage the priority of applications that rely on UDP, such as multimedia applications, so that they have the required bandwidth even in times of network congestion, but do not overwhelm the network.

Display data prioritization automatically controls virtual channel traffic so that display, keyboard, and mouse data is given a higher priority over other virtual channel traffic, such as printing or file transfers. This prioritization is designed to ensure that your screen performance is not adversely affected by bandwidth intensive actions, such as large print jobs.

The default bandwidth ratio is 70:30. Display and input data will be allocated 70 percent of the bandwidth, and all other traffic, such as clipboard, file transfers, or print jobs, will be allocated 30 percent of the bandwidth.

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RAS




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