We have presented the design, implementation and evaluation of PCP, a novel architecture for distributed congestion control with minimal router support. By using short, paced, high-rate bursts, PCP is able to quickly converge to the desired bandwidth in the common case of lightly loaded links with good history. Although our results are somewhat preliminary, we have demonstrated that our approach can significantly outperform TCP, and approach optimal, for response time, loss rate, queue occupancy, and fairness. We believe PCP's combination of techniques shows great promise as a distributed resource allocation mechanism for modern networks.