@techreport{nielsen-tsvwg-sctp-tlr-02, number = {draft-nielsen-tsvwg-sctp-tlr-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-nielsen-tsvwg-sctp-tlr/02/}, author = {karen Nielsen and Rafaelle De Santis and Anna Brunstrom and Michael Tüxen and Randall R. Stewart}, title = {{SCTP Tail Loss Recovery Enhancements}}, pagetotal = 42, year = 2015, month = oct, day = 19, abstract = {Loss Recovery by means of T3-Retransmission has significant detrimental impact on the delays experienced through an SCTP association. The throughput achievable over an SCTP association also is negatively impacted by the occurrence of T3-Retransmissions. The present SCTP Fast Recovery algorithms as specified by {[}RFC4960{]} are not able to adequately or timely recover losses in certain situations, thus resorting to loss recovery by lengthy T3-Retransimissions or by non-timely activation of Fast Recovery. In this document we specify a number of enhancements to the SCTP Loss Recovery algorithms which amends some of these deficiencies with a particular focus on Loss Recovery for drops in Traffic Tails. The enhancements supplement the existing algorithms of {[}RFC4960{]} with proactive probing and timer driven activation of the Fast Retransmission algorithm as well as a number of enhancements of the Fast Retransmission algorithm in itself are specified.}, }