SCTP-Based Transport Mapping Layer (TML) for the Forwarding and Control Element Separation (ForCES) Protocol
RFC 5811

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Internet Engineering Task Force (IETF)                     J. Hadi Salim
Request for Comments: 5811                             Mojatatu Networks
Category: Standards Track                                       K. Ogawa
ISSN: 2070-1721                                          NTT Corporation
                                                              March 2010

            SCTP-Based Transport Mapping Layer (TML) for the
      Forwarding and Control Element Separation (ForCES) Protocol

Abstract

   This document defines the SCTP-based TML (Transport Mapping Layer)
   for the ForCES (Forwarding and Control Element Separation) protocol.
   It explains the rationale for choosing the SCTP (Stream Control
   Transmission Protocol) and also describes how this TML addresses all
   the requirements required by and the ForCES protocol.

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/rfc5811.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   described in the Simplified BSD License.

Hadi Salim & Ogawa           Standards Track                    [Page 1]
RFC 5811                     ForCES SCTP TML                  March 2010

   This document may contain material from IETF Documents or IETF
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   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
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   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................3
   2. Definitions .....................................................3
   3. Protocol Framework Overview .....................................4
      3.1. The PL .....................................................5
      3.2. The TML ....................................................5
           3.2.1. TML and PL Interfaces ...............................5
           3.2.2. TML Parameterization ................................6
   4. SCTP TML Overview ...............................................7
      4.1. Rationale for Using SCTP for TML ...........................7
      4.2. Meeting TML Requirements ...................................8
           4.2.1. SCTP TML Channels ...................................9
           4.2.2. Satisfying TML Requirements ........................14
   5. SCTP TML Channel Work ..........................................16
   6. IANA Considerations ............................................16
   7. Security Considerations ........................................17
      7.1. IPsec Usage ...............................................17
           7.1.1. SAD and SPD Setup ..................................18
   8. Acknowledgements ...............................................18
   9. References .....................................................19
      9.1. Normative References ......................................19
      9.2. Informative References ....................................20
   Appendix A.  Suggested SCTP TML Channel Work Implementation .......21
     A.1.  SCTP TML Channel Initialization ...........................21
     A.2.  Channel Work Scheduling ...................................21
       A.2.1.  FE Channel Work Scheduling ............................21
       A.2.2.  CE Channel Work Scheduling ............................22
     A.3.  SCTP TML Channel Termination ..............................23
     A.4.  SCTP TML NE-Level Channel Scheduling ......................23