Traffic shaping

Info
  • The bounded latency of Milan-AVB is ensured by using traffic shaping mechanisms.
  • The Stream Reservation Protocol (SRP) reserves only the required bandwidth for each stream, exclusively between the Talker and Listener. The remaining bandwidth stays available for other traffic.
  • The Forward Queuing for Time-Sensitive Streams (FQTSS) ensures that packets are transmitted so that they reach their destination in time.
  • Up to 75% of the available bandwidth can be used for Milan-AVB traffic. If no stream requires the bandwidth, it is available for all other traffic.

Traffic shaping is an essential part of Milan-AVB and the biggest difference compared to other networked audio protocols.

Two components are crucial for traffic shaping:

  1. The Stream Reservation Protocol (SRP) that configures a path from a Talker to a Listener.
  2. The traffic shaper in a switch. The technology is based on the credit-based shaper and is often referred to as Forwarding and Queuing for Time-Sensitive Streams (FQTSS).