SCTP Socket API Extensions for Concurrent Multipath Transfer
draft-dreibholz-tsvwg-sctpsocket-multipath-22
Network Working Group T. Dreibholz
Internet-Draft SimulaMet
Intended status: Experimental M. Becke
Expires: September 14, 2021 HAW Hamburg
H. Adhari
University of Duisburg-Essen
March 13, 2021
SCTP Socket API Extensions for Concurrent Multipath Transfer
draft-dreibholz-tsvwg-sctpsocket-multipath-22
Abstract
This document describes extensions to the SCTP sockets API for
configuring the CMT-SCTP and CMT/RP-SCTP extensions.
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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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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
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