Stream Control Transmission Protocol (SCTP) Chunk Flags Registration
RFC 6096

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Internet Engineering Task Force (IETF)                         M. Tuexen
Request for Comments: 6096            Muenster Univ. of Applied Sciences
Updates: 4960                                                 R. Stewart
Category: Standards Track                                         Huawei
ISSN: 2070-1721                                             January 2011

  Stream Control Transmission Protocol (SCTP) Chunk Flags Registration

Abstract

   This document defines the procedure for registering chunk flags with
   the Internet Assigned Numbers Authority (IANA) for the Stream Control
   Transmission Protocol (SCTP).  It updates RFC 4960 and also defines
   the IANA registry for contents for currently defined chunk types.  It
   does not change SCTP in any other way.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6096.

Copyright Notice

   Copyright (c) 2011 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Tuexen & Stewart             Standards Track                    [Page 1]
RFC 6096              SCTP Chunk Flags Registration         January 2011

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . 3
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
     3.1.  Updated IETF-Defined Chunk Extension  . . . . . . . . . . . 3
     3.2.  New IETF Chunk Flags Registration . . . . . . . . . . . . . 4
     3.3.  Initial Registrations . . . . . . . . . . . . . . . . . . . 4
       3.3.1.  DATA Chunk Flags  . . . . . . . . . . . . . . . . . . . 4
       3.3.2.  INIT Chunk Flags  . . . . . . . . . . . . . . . . . . . 5
       3.3.3.  INIT ACK Chunk Flags  . . . . . . . . . . . . . . . . . 5
       3.3.4.  SACK Chunk Flags  . . . . . . . . . . . . . . . . . . . 5
       3.3.5.  HEARTBEAT Chunk Flags . . . . . . . . . . . . . . . . . 5
       3.3.6.  HEARTBEAT ACK Chunk Flags . . . . . . . . . . . . . . . 5
       3.3.7.  ABORT Chunk Flags . . . . . . . . . . . . . . . . . . . 5
       3.3.8.  SHUTDOWN Chunk Flags  . . . . . . . . . . . . . . . . . 5
       3.3.9.  SHUTDOWN ACK Chunk Flags  . . . . . . . . . . . . . . . 6
       3.3.10. ERROR Chunk Flags . . . . . . . . . . . . . . . . . . . 6
       3.3.11. COOKIE ECHO Chunk Flags . . . . . . . . . . . . . . . . 6
       3.3.12. COOKIE ACK Chunk Flags  . . . . . . . . . . . . . . . . 6
       3.3.13. ECNE Chunk Flags  . . . . . . . . . . . . . . . . . . . 6
       3.3.14. CWR Chunk Flags . . . . . . . . . . . . . . . . . . . . 6
       3.3.15. SHUTDOWN COMPLETE Chunk Flags . . . . . . . . . . . . . 6
       3.3.16. AUTH Chunk Flags  . . . . . . . . . . . . . . . . . . . 7
       3.3.17. ASCONF ACK Chunk Flags  . . . . . . . . . . . . . . . . 7
       3.3.18. PAD Chunk Flags . . . . . . . . . . . . . . . . . . . . 7
       3.3.19. FORWARD TSN Chunk Flags . . . . . . . . . . . . . . . . 7
       3.3.20. ASCONF Chunk Flags  . . . . . . . . . . . . . . . . . . 7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   5.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 7
   6.  Normative References  . . . . . . . . . . . . . . . . . . . . . 8

Tuexen & Stewart             Standards Track                    [Page 2]
RFC 6096              SCTP Chunk Flags Registration         January 2011

1.  Introduction

   [RFC4960], which currently defines the Stream Control Transmission
   Protocol (SCTP), provides a procedure to define new chunk types.
   However, several protocol extensions currently being discussed need
   to define new chunk flags for existing chunks.

   This document updates RFC 4960 to overcome this limitation.  It
   defines the procedure to register chunk flags and specifies the
   registry entries for existing chunk types.  The protocol is not