Stream Control Transmission Protocol
draft-ietf-tsvwg-rfc4960-bis-08
Network Working Group R. R. Stewart
Internet-Draft Netflix, Inc.
Obsoletes: 4960 (if approved) M. Tüxen
Intended status: Standards Track Münster Univ. of Appl. Sciences
Expires: 3 June 2021 K. E. E. Nielsen
Kamstrup A/S
30 November 2020
Stream Control Transmission Protocol
draft-ietf-tsvwg-rfc4960-bis-08
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:
* acknowledged error-free non-duplicated transfer of user data,
* data fragmentation to conform to discovered path MTU size,
* sequenced delivery of user messages within multiple streams, with
an option for order-of-arrival delivery of individual user
messages,
* optional bundling of multiple user messages into a single SCTP
packet, and
* 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.
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Internet-Draft Stream Control Transmission Protocol November 2020
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Table of Contents
1. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . 6
2.2. Architectural View of SCTP . . . . . . . . . . . . . . . 7
2.3. Key Terms . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4. Abbreviations . . . . . . . . . . . . . . . . . . . . . . 12
2.5. Functional View of SCTP . . . . . . . . . . . . . . . . . 12
2.5.1. Association Startup and Takedown . . . . . . . . . . 13
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2.5.2. Sequenced Delivery within Streams . . . . . . . . . . 13
2.5.3. User Data Fragmentation . . . . . . . . . . . . . . . 14
2.5.4. Acknowledgement and Congestion Avoidance . . . . . . 14
2.5.5. Chunk Bundling . . . . . . . . . . . . . . . . . . . 14
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