SCTP Socket API Extensions for Concurrent Multipath Transfer
draft-dreibholz-tsvwg-sctpsocket-multipath-19
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2019-09-10
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Network Working Group T. Dreibholz
Internet-Draft SimulaMet
Intended status: Experimental M. Becke
Expires: March 13, 2020 HAW Hamburg
H. Adhari
University of Duisburg-Essen
September 10, 2019
SCTP Socket API Extensions for Concurrent Multipath Transfer
draft-dreibholz-tsvwg-sctpsocket-multipath-19
Abstract
This document describes extensions to the SCTP sockets API for
configuring the CMT-SCTP and CMT/RP-SCTP extensions.
Status of This Memo
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This Internet-Draft will expire on March 13, 2020.
Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
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Internet-Draft SCTP Socket API Extensions September 2019
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Concurrent Multipath Transfer and Resource Pooling
Activation/Deactivation (SCTP_CMT_ON_OFF) . . . . . . . . . . 2
3. Testbed Platform . . . . . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 3
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
6. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 3
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 3
7.1. Normative References . . . . . . . . . . . . . . . . . . 3
7.2. Informative References . . . . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 6
1. Introduction
This draft describes extensions to the SCTP sockets API (see
[RFC6458], [RFC4960]) which allow an application to configure the
behaviour of the Concurrent Multipath Transfer (CMT) extensions CMT-
SCTP, CMT/RPv1-SCTP, CMT/RPv2-SCTP and MPTCP-like (see
[I-D.tuexen-tsvwg-sctp-multipath], [Globecom2010], [PAMS2012],
[Dre2012], [PAMS2011], [SoftCOM2011], [ConTEL2011], [AINA2010],
[IAS2006]).
2. Concurrent Multipath Transfer and Resource Pooling Activation/
Deactivation (SCTP_CMT_ON_OFF)
This socket option activates or deactivates CMT and sets the
corresponding Resource Pooling variant to be applied. The
sctp_assoc_value structure is used to specify the association for
which the CMT state should be changed and the new CMT state.
Definition of the sctp_assoc_value structure:
struct sctp_assoc_value {
sctp_assoc_t assoc_id;
uint32_t assoc_value;
};
assoc_id: Holds the identifier for the association of which the CMT
state should be changed. Ignored for one-to-one style sockets.
assoc_value:
0 Turns CMT off.
1 Turns plain CMT-SCTP on. No Resource Pooling is applied.
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Internet-Draft SCTP Socket API Extensions September 2019
2 Turns CMT-SCTP on. CMT/RPv1 Resource Pooling as defined in
[AINA2010] is applied.
3 Turns CMT-SCTP on. CMT/RPv2 Resource Pooling as defined in
[ConTEL2011] is applied.
4 Turns CMT-SCTP on. MPTCP-like Resource Pooling as defined in
[SoftCOM2011], [ConTEL2011], [PAMS2012] is applied.
3. Testbed Platform
A large-scale and realistic Internet testbed platform with support
for the multi-homing feature of the underlying SCTP protocol is
NorNet. A description of NorNet is provided in [PAMS2013-NorNet],
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