QoS Traffic Policing

QoS Traffic Policing is one of the most critical functions of Stingray Service Gateway. DPI technology achieves high output by classifying all traffic by priorities, providing wider bandwidth to specific applications and protocols.

Service description

QoS (Quality of Service) helps a network device (router or similar) optimize traffic to be sufficient for the user’s critical applications. The service can dynamically apply various methods of differentiation to traffic.

QoS is mostly applicable in IP telephony, IPTV, video conferencing, and other delay-sensitive services.

Availability and high quality of service are the leading indicators of a provider’s performance. Stuttering sound, video with colour squares, slow pages’ downloads are very annoying for end users. These issues can be improved by managing QoE (Quality of Experience) with the Stingray platform’s QoS function.

Tasks QoS performs

Ensures Internet access quality and speed

Ensures traffic evenness

Differentiates and prioritizes traffic

Prevents network overload


Hierarchy of Prioritization

To ensure QoS, Stingray SG allows traffic prioritization on all stages of its delivery to the user:

  • by common channel
  • by the subscriber's tariff
  • by VLAN and ports if there are several UPLINKS (channels to upper provider) and need for balancing

Traffic Mapping by Changing the Priority Field

Stingray SG changes packets that pass through it after defining a protocol or an autonomous system to ensure the required QoS on the router or shaper. The following fields are supported:

  • DSCP/TOS in the headline of IP packets
  • priority in VLAN and Q-in-Q packets' headlines
  • traffic class in the headline of MPLS packets

Tariff Plans for Users

Stingray SG allows limiting the bandwidth for the user (within the tariff plan) and prioritizing traffic within this bandwidth. These features enable Stingray SG to provide a high quality of service for the most demanded applications, — even if the same IP address is assigned to several users, one of which loads the channel unevenly (for example, by running a torrent client). Setting high priority to sensitive services like streaming video, IP telephony, IPTV ensures their stable operation and high quality.

Uplink Expenses Decreasing and QoE Increasing

Purchasing additional UPLINK speed during peak hours can be avoided thanks to the QoS function's ability to assign a lower priority for background applications (torrents, file downloads, updates, etc.) and a higher priority for online video, web browsing, or online games. Therefore during peak hours, the user will not notice quality deterioration, and network will not exceed the UPLINK speed.

Channel's Upper Limit Control

Stingray Service Gateway allows monitoring the channel's upper limit. When a user approaches this limit, the service prioritizes traffic by protocols and directions: Stingray SG forces low-priority traffic out of high bandwidth favouring high priority traffic instead


  • Load-resistant and always available network
  • Real-time mapping and automated solution of network and applications performance issues
  • AUP
  • Possibility to set up custom policies and quotes to block the specific content or to prevent network abuse

Where to begin?

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