LAUSR

This paper presents the packet-scale paradigm for designing end-to-end congestion control protocols for ultra-high speed networks. The paradigm discards the legacy framework of RTT-scale protocols, and instead builds upon two revolutionary foundations—that of continually probing for available bandwidth at short timescales, and that of adapting the data sending rate so as to avoid overloading the network. Through experimental evaluations with a prototype, we report high performance gains along several dimensions in high-speed networks—the steady-state throughput, adaptability to dynamic cross-traffic, RTT-fairness, and co-existence with the conventional TCP traffic mixes. The paradigm also opens up several issues that are less of a concern for traditional protocols—we summarize our approaches for addressing these.