General Internet Signaling Transport (GIST) over Stream Control Transmission Protocol (SCTP) and Datagram Transport Layer Security (DTLS)
RFC 6084

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Internet Engineering Task Force (IETF)                             X. Fu
Request for Comments: 6084                                   C. Dickmann
Category: Experimental                          University of Goettingen
ISSN: 2070-1721                                             J. Crowcroft
                                                 University of Cambridge
                                                            January 2011

              General Internet Signaling Transport (GIST)
            over Stream Control Transmission Protocol (SCTP)
              and Datagram Transport Layer Security (DTLS)

Abstract

   The General Internet Signaling Transport (GIST) protocol currently
   uses TCP or Transport Layer Security (TLS) over TCP for Connection
   mode operation.  This document describes the usage of GIST over the
   Stream Control Transmission Protocol (SCTP) and Datagram Transport
   Layer Security (DTLS).

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for examination, experimental implementation, and
   evaluation.

   This document defines an Experimental Protocol for the Internet
   community.  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).  Not
   all documents approved by the IESG are a candidate for any level of
   Internet Standard; see 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/rfc6084.

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

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RFC 6084                 GIST over SCTP and DTLS            January 2011

   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.

   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
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology and Abbreviations  . . . . . . . . . . . . . . . .  4
   3.  GIST over SCTP . . . . . . . . . . . . . . . . . . . . . . . .  5
     3.1.  Message Association Setup  . . . . . . . . . . . . . . . .  5
       3.1.1.  Overview . . . . . . . . . . . . . . . . . . . . . . .  5
       3.1.2.  Protocol-Definition: Forwards-SCTP . . . . . . . . . .  5
     3.2.  Effect on GIST State Maintenance . . . . . . . . . . . . .  6
     3.3.  PR-SCTP Support  . . . . . . . . . . . . . . . . . . . . .  6
     3.4.  API between GIST and NSLP  . . . . . . . . . . . . . . . .  7
   4.  Bit-Level Formats  . . . . . . . . . . . . . . . . . . . . . .  7
     4.1.  MA-Protocol-Options  . . . . . . . . . . . . . . . . . . .  7
   5.  Application of GIST over SCTP  . . . . . . . . . . . . . . . .  8
     5.1.  Multihoming Support of SCTP  . . . . . . . . . . . . . . .  8
     5.2.  Streaming Support in SCTP  . . . . . . . . . . . . . . . .  8
   6.  NAT Traversal Issue  . . . . . . . . . . . . . . . . . . . . .  8
   7.  Use of DTLS with GIST  . . . . . . . . . . . . . . . . . . . .  9
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   10. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 10
   11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     11.1. Normative References . . . . . . . . . . . . . . . . . . . 10
     11.2. Informative References . . . . . . . . . . . . . . . . . . 11

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