Stream Control Transmission Protocol
draft-ietf-tsvwg-rfc4960-bis-01

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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

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   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
   Provisions Relating to IETF Documents
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   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
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   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
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   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

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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       1.5.4.  Acknowledgement and Congestion Avoidance  . . . . . .  13
       1.5.5.  Chunk Bundling  . . . . . . . . . . . . . . . . . . .  14
       1.5.6.  Packet Validation . . . . . . . . . . . . . . . . . .  14