{"draft":"draft-ietf-tcpm-prr-rfc6937bis-21","doc_id":"RFC9937","title":"Proportional Rate Reduction (PRR)","authors":["M. Mathis","N. Cardwell","Y. Cheng","N. Dukkipati"],"format":["HTML","TEXT","PDF","XML"],"page_count":"20","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"TCP Maintenance and Minor Extensions","abstract":"This document specifies a Standards Track version of the Proportional\r\nRate Reduction (PRR) algorithm that obsoletes the Experimental\r\nversion described in RFC 6937.   PRR regulates the amount of data\r\nsent by TCP or other transport protocols during fast recovery.  PRR\r\naccurately regulates the actual flight size through recovery such\r\nthat at the end of recovery it will be as close as possible to the\r\nslow start threshold (ssthresh), as determined by the congestion\r\ncontrol algorithm.","pub_date":"December 2025","keywords":["loss recovery","SACK","self clock","fast retransmit","fast recovery"],"obsoletes":["RFC6937"],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC9937","errata_url":null}