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Checking references for intended status: Experimental ---------------------------------------------------------------------------- ** Obsolete normative reference: RFC 4960 (Obsoleted by RFC 9260) == Outdated reference: A later version (-32) exists of draft-ietf-tsvwg-sctpsocket-29 == Outdated reference: A later version (-27) exists of draft-tuexen-tsvwg-sctp-multipath-01 Summary: 1 error (**), 0 flaws (~~), 3 warnings (==), 1 comment (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 Network Working Group T. Dreibholz 3 Internet-Draft M. Becke 4 Intended status: Experimental University of Duisburg-Essen 5 Expires: November 6, 2011 May 05, 2011 7 SCTP Socket API Extensions for Concurrent Multipath Transfer 8 draft-dreibholz-tsvwg-sctpsocket-multipath-01.txt 10 Abstract 12 This document describes extensions to the SCTP sockets API for 13 configuring the CMT-SCTP and CMT/RP-SCTP extensions. 15 Status of this Memo 17 This Internet-Draft is submitted in full conformance with the 18 provisions of BCP 78 and BCP 79. 20 Internet-Drafts are working documents of the Internet Engineering 21 Task Force (IETF). Note that other groups may also distribute 22 working documents as Internet-Drafts. The list of current Internet- 23 Drafts is at http://datatracker.ietf.org/drafts/current/. 25 Internet-Drafts are draft documents valid for a maximum of six months 26 and may be updated, replaced, or obsoleted by other documents at any 27 time. It is inappropriate to use Internet-Drafts as reference 28 material or to cite them other than as "work in progress." 30 This Internet-Draft will expire on November 6, 2011. 32 Copyright Notice 34 Copyright (c) 2011 IETF Trust and the persons identified as the 35 document authors. All rights reserved. 37 This document is subject to BCP 78 and the IETF Trust's Legal 38 Provisions Relating to IETF Documents 39 (http://trustee.ietf.org/license-info) in effect on the date of 40 publication of this document. Please review these documents 41 carefully, as they describe your rights and restrictions with respect 42 to this document. Code Components extracted from this document must 43 include Simplified BSD License text as described in Section 4.e of 44 the Trust Legal Provisions and are provided without warranty as 45 described in the Simplified BSD License. 47 Table of Contents 49 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 50 2. Concurrent Multipath Transfer and Resource Pooling 51 Activation/Deactivation (SCTP_CMT_ON_OFF) . . . . . . . . . . . 3 52 3. Security Considerations . . . . . . . . . . . . . . . . . . . . 3 53 4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4 54 5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 4 55 6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 4 56 6.1. Normative References . . . . . . . . . . . . . . . . . . . 4 57 6.2. Informative References . . . . . . . . . . . . . . . . . . 4 58 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 5 60 1. Introduction 62 This draft describes extensions to the SCTP sockets API (see 63 [I-D.ietf-tsvwg-sctpsocket], [RFC4960]) which allow an application to 64 configure the behaviour of the Concurrent Multipath Transfer (CMT) 65 extensions CMT-SCTP, CMT/RPv1-SCTP and CMT/RPv2-SCTP (see 66 [I-D.tuexen-tsvwg-sctp-multipath], [Globecom2010], [ConTEL2011], 67 [AINA2010], [IAS2006]). 69 2. Concurrent Multipath Transfer and Resource Pooling Activation/ 70 Deactivation (SCTP_CMT_ON_OFF) 72 This socket option activates or deactivates CMT and sets the 73 corresponding Resource Pooling variant to be applied. The 74 sctp_assoc_value structure is used to specify the association for 75 which the CMT state should be changed and the new CMT state. 77 Definition of the sctp_assoc_value structure: 79 struct sctp_assoc_value { 80 sctp_assoc_t assoc_id; 81 uint32_t assoc_value; 82 }; 84 assoc_id: Holds the identifier for the association of which the CMT 85 state should be changed. Ignored for one-to-one style sockets. 87 assoc_value: 89 0 Turns CMT off. 91 1 Turns plain CMT-SCTP on. No Resource Pooling is applied. 93 2 Turns CMT-SCTP on. CMT/RPv1 Resource Pooling as defined in 94 [AINA2010] is applied. 96 3 Turns CMT-SCTP on. CMT/RPv2 Resource Pooling as defined in 97 [ConTEL2011] is applied. 99 3. Security Considerations 101 Security considerations for the SCTP sockets API are described by 102 [I-D.ietf-tsvwg-sctpsocket]. 104 4. IANA Considerations 106 This document does not require IANA actions. 108 5. Acknowledgments 110 The authors would like to thank Michael Tuexen for his support. 112 6. References 114 6.1. Normative References 116 [RFC4960] Stewart, R., "Stream Control Transmission Protocol", 117 RFC 4960, September 2007. 119 [I-D.ietf-tsvwg-sctpsocket] 120 Stewart, R., Tuexen, M., Poon, K., Lei, P., and V. 121 Yasevich, "Sockets API Extensions for Stream Control 122 Transmission Protocol (SCTP)", 123 draft-ietf-tsvwg-sctpsocket-29 (work in progress), 124 April 2011. 126 [I-D.tuexen-tsvwg-sctp-multipath] 127 Becke, M., Dreibholz, T., Iyengar, J., Natarajan, P., and 128 M. Tuexen, "Load Sharing for the Stream Control 129 Transmission Protocol (SCTP)", 130 draft-tuexen-tsvwg-sctp-multipath-01 (work in progress), 131 December 2010. 133 6.2. Informative References 135 [ConTEL2011] 136 Dreibholz, T., Becke, M., Adhari, H., and E. Rathgeb, "On 137 the Impact of Congestion Control for Concurrent Multipath 138 Transfer on the Transport Layer", Proceedings of the 11th 139 IEEE International Conference on 140 Telecommunications (ConTEL), April 2011. 142 [AINA2010] 143 Dreibholz, T., Becke, M., Pulinthanath, J., and E. 144 Rathgeb, "Applying TCP-Friendly Congestion Control to 145 Concurrent Multipath Transfer", Proceedings of the IEEE 146 24th International Conference on Advanced Information 147 Networking and Applications (AINA), April 2010. 149 [Globecom2010] 150 Dreibholz, T., Becke, M., Rathgeb, E., and M. Tuexen, "On 151 the Use of Concurrent Multipath Transfer over Asymmetric 152 Paths", Proceedings of the IEEE Global Communications 153 Conference (GLOBECOM), December 2010. 155 [IAS2006] Iyengar, J., Amer, P., and R. Stewart, "Concurrent 156 Multipath Transfer Using SCTP Multihoming Over Independent 157 End-to-End Paths", Journal IEEE/ACM Transactions on 158 Networking, October 2006. 160 Authors' Addresses 162 Thomas Dreibholz 163 University of Duisburg-Essen, Institute for Experimental Mathematics 164 Ellernstrasse 29 165 45326 Essen, Nordrhein-Westfalen 166 Germany 168 Phone: +49-201-1837637 169 Fax: +49-201-1837673 170 Email: dreibh@iem.uni-due.de 171 URI: http://www.iem.uni-due.de/~dreibh/ 173 Martin Becke 174 University of Duisburg-Essen, Institute for Experimental Mathematics 175 Ellernstrasse 29 176 45326 Essen, Nordrhein-Westfalen 177 Germany 179 Phone: +49-201-183-7667 180 Fax: +49-201-183-7673 181 Email: martin.becke@uni-due.de