Tag :: FADT

Fair Adaptive Dynamic thresholds (FADT) provides efficient allocation of shared packet buffer resources amongst various virtual output queues. FADT is useful when queues are getting congested and buffer resources should be allocated in a way tdat prioritizes certain queues while avoiding starvation of lower priority queues. the scheme works on each incoming packet by calculating instantaneous queue threshold based on available free resources. Queue buffer threshold is calculated as:

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Priority-Flow-Control (PFC) Fair Adaptive Dynamic Threshold (FADT) configuration facilitates efficient utilization of packet buffer resources for both lossy and lossless traffic. Reserve headroom buffer resources to absorb in-flight packets for congested, lossless flows. Assign default or user-defined PFC profiles to interface/PFC priority pairs, called Priority Groups (PG), to dynamically manage packet buffer usage and assertion of PFC pause.

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