Stream Control Transmission Protocol
draft-ietf-tsvwg-rfc4960-bis-01
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2019-03-11
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Network Working Group R. Stewart
Internet-Draft Netflix, Inc.
Obsoletes: 4960 (if approved) M. Tuexen
Intended status: Standards Track Muenster Univ. of Appl. Sciences
Expires: September 12, 2019 K. Nielsen
Kamstrup A/S
March 11, 2019
Stream Control Transmission Protocol
draft-ietf-tsvwg-rfc4960-bis-01
Abstract
This document obsoletes RFC 4960, if approved. It describes the
Stream Control Transmission Protocol (SCTP). SCTP is designed to
transport Public Switched Telephone Network (PSTN) signaling messages
over IP networks, but is capable of broader applications.
SCTP is a reliable transport protocol operating on top of a
connectionless packet network such as IP. It offers the following
services to its users:
o acknowledged error-free non-duplicated transfer of user data,
o data fragmentation to conform to discovered path MTU size,
o sequenced delivery of user messages within multiple streams, with
an option for order-of-arrival delivery of individual user
messages,
o optional bundling of multiple user messages into a single SCTP
packet, and
o network-level fault tolerance through supporting of multi-homing
at either or both ends of an association.
The design of SCTP includes appropriate congestion avoidance behavior
and resistance to flooding and masquerade attacks.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
Stewart, et al. Expires September 12, 2019 [Page 1]
Internet-Draft Stream Control Transmission Protocol March 2019
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 12, 2019.
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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . 6
1.2. Architectural View of SCTP . . . . . . . . . . . . . . . 6
1.3. Key Terms . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 11
1.5. Functional View of SCTP . . . . . . . . . . . . . . . . . 11
1.5.1. Association Startup and Takedown . . . . . . . . . . 12
1.5.2. Sequenced Delivery within Streams . . . . . . . . . . 13
1.5.3. User Data Fragmentation . . . . . . . . . . . . . . . 13
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Internet-Draft Stream Control Transmission Protocol March 2019
1.5.4. Acknowledgement and Congestion Avoidance . . . . . . 13
1.5.5. Chunk Bundling . . . . . . . . . . . . . . . . . . . 14
1.5.6. Packet Validation . . . . . . . . . . . . . . . . . . 14
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