Quality of Service (QoS)

A Quality of Service (QoS) policy ensures data transfer in accordance with the requirements set for traffic classes. In Kaspersky SD-WAN, the following components contribute to the quality of service:

• Traffic classes - indicate the priority of traffic processing and distribute traffic among queues. For example, you can use one of the traffic classes for real-time traffic that requires minimizing packet loss. You can map traffic to traffic classes when creating or editing a traffic classifier.
• Traffic classifiers determine whether or not the DSCP values specified in the traffic packet header fields must be trusted. If a traffic classifier does not trust DSCP values, it maps them to traffic classes. You can specify a traffic classifier when creating or editing a quality of service rule to make the quality of service rule use this traffic classifier.
• Quality of service rules determine whether the bandwidth of traffic processed by traffic classifiers is limited. You can specify a quality of service rule when you create or edit a transport service to make the transport service use this quality of service rule.
• Constraints are used to configure how the paths are built in transport services. You can create two types of constraints:
  • Manual-TE constraints add Manual-TE paths to transport services.
  • Threshold constraints specify link monitoring thresholds that are used to build Auto-TE paths in transport services.

  You can specify a constraint when creating or editing a transport service to make the transport service use this constraint.

• Traffic classification rules identify traffic with particular values of the L2 – L4 header fields, as well as traffic of specified applications, in the overall stream of traffic. You can specify a traffic classification rule when creating or editing a traffic filter to make the traffic filter use this traffic classification rule.
• Traffic filters filter traffic based on specified traffic classification rules. You can specify a traffic filter when creating or editing a transport service or ACL interface to make the transport service or ACL interface use this traffic filter.

In this Help section Managing traffic classes Managing traffic classifiers Managing quality of service rules Managing Manual-TE constraints Managing threshold constraints Managing traffic classification rules Managing traffic filters

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