TCP Prague Fall-back on Detection of a Classic ECN AQM

11/02/2019

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by   Bob Briscoe, et al.

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The IETF's Prague L4S Requirements expect an L4S congestion control to somehow detect the presence of a classic (RFC 3168) ECN AQM at the bottleneck and fall back to Reno-friendly behaviour (as they do on a loss). This paper discusses how best to address that requirement.