Synonymous Flow Label Framework
draft-bryant-mpls-sfl-framework-05

Document Type Active Internet-Draft (mpls WG)
Last updated 2017-06-26
Replaces draft-bryant-mpls-synonymous-flow-labels
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MPLS Working Group                                             S. Bryant
Internet-Draft                                                   M. Chen
Intended status: Informational                                     Z. Li
Expires: December 28, 2017                                        Huawei
                                                              G. Swallow
                                                            S. Sivabalan
                                                           Cisco Systems
                                                               G. Mirsky
                                                                Ericsson
                                                           June 26, 2017

                    Synonymous Flow Label Framework
                   draft-bryant-mpls-sfl-framework-05

Abstract

   draft-ietf-mpls-flow-ident describes the requirement for introducing
   flow identities within the MPLS architecture.  This document
   describes a method of accomplishing this by using a technique called
   Synonymous Flow Labels in which labels which mimic the behaviour of
   other labels provide the identification service.  These identifiers
   can be used to trigger per-flow operations on the on the packet at
   the receiving label switching router.

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
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   This Internet-Draft will expire on December 28, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bryant, et al.          Expires December 28, 2017               [Page 1]
Internet-Draft                   MPLS FI                       June 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   2
   3.  Synonymous Flow Labels  . . . . . . . . . . . . . . . . . . .   3
   4.  User Service Traffic in the Data Plane  . . . . . . . . . . .   4
     4.1.  Applications Label Present  . . . . . . . . . . . . . . .   4
       4.1.1.  Setting TTL and the Traffic Class Bits  . . . . . . .   5
     4.2.  Single Label Stack  . . . . . . . . . . . . . . . . . . .   5
       4.2.1.  Setting TTL and the Traffic Class Bits  . . . . . . .   6
     4.3.  Aggregation of SFL Actions  . . . . . . . . . . . . . . .   6
   5.  Equal Cost Multipath Considerations . . . . . . . . . . . . .   7
   6.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   [I-D.ietf-mpls-flow-ident] describes the requirement for introducing
   flow identities within the MPLS architecture.

   This document describes a method of accomplishing this by using a
   technique called Synonymous Flow Labels (SFL) (see (Section 2)) in
   which labels which mimic the behaviour of other labels provide the
   identification service.  These identifiers can be used to trigger
   per-flow operations on the packet at the receiving label switching
   router.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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