The TC-1 traffic class is targeted towards real-time, interactive multimedia applications, with the following characteristics:


  • Low bit-rate
  • Low frame delay, frame delay variation, frame loss


The attributes of this class are aligned to the characteristics of the DSCP Expedited Forwarding per-hopbehaviour described in RFC4594.TC-1 provides a committed level of premium capacity with limited ability to burst above its CIR, suitable forapplications that require deterministic performance and are likely to be sensitive to packet loss.


The TC-2 traffic class is targeted towards real-time, interactive multimedia applications, with the following characteristics:


  • High bit-rates, and large Ethernet frame sizes
  • Low frame delay, frame delay variation, frame loss


The attributes of this class are aligned to the characteristics of the DSCP Assured Forwarding (AF) per-hopbehaviour described in RFC4594.TC-2 provides a committed level of premium capacity with limited ability to burst above its CIR, suitable forapplications that require deterministic performance and are likely to be sensitive to frame delay variation(FDV/jitter) and frame loss (FLR).