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: Sources must set the ECT(1) codepoint in the IP header to identify as L4S-capable.

: Implements a "virtual RTT" to prevent flows with very low Round-Trip Times from dominating others. Prague

: To maintain consistently low queuing delay (on the order of milliseconds) while fully utilizing network capacity. Key Features : : Sources must set the ECT(1) codepoint in

The is a scalable congestion control mechanism designed for the L4S (Low Latency, Low Loss, and Scalable Throughput) architecture. and Scalable Throughput) architecture.