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[RPRWG] Question about the Fairness Message

  As defined in D0.2, the type A and type B fairness messages are sent out periodically to propagate fair rate information to upstream nodes. In another word, it means that all congested or uncongested nodes both send this fairness message onto the ring. Assume that one node received the fairness message from another node, but how could the node judge which node is congested ? And then how could the node get the number of hops to the congested node? 

Best Regards,
PHD. of Tsinghua University