Signaling Flow-ID Label Capability and Flow-ID Readable Label Depth Using IGP and BGP-LS
draft-xzc-lsr-mpls-flc-flrd-00

Document Type Active Internet-Draft (individual)
Authors Xiao Min  , Zheng Zhang  , Weiqiang Cheng 
Last updated 2021-02-21
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LSR Working Group                                                 X. Min
Internet-Draft                                                  Z. Zhang
Intended status: Standards Track                               ZTE Corp.
Expires: August 25, 2021                                        W. Cheng
                                                            China Mobile
                                                       February 21, 2021

  Signaling Flow-ID Label Capability and Flow-ID Readable Label Depth
                          Using IGP and BGP-LS
                     draft-xzc-lsr-mpls-flc-flrd-00

Abstract

   Flow-ID Label (FL) is used for MPLS flow identification and flow-
   based performance measurement with alternate marking method.  The
   ability to process Flow-ID labels is called Flow-ID Label Capability
   (FLC), and the capability of reading the maximum label stack depth
   and performing FL-based performance measurement is called Flow-ID
   Readable Label Depth (FRLD).  This document defines a mechanism to
   signal the FLC and the FRLD using IGP and BGP-LS.

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   This Internet-Draft will expire on August 25, 2021.

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Internet-Draft Signaling FLC and FLRD using IGP and BGP-LS February 2021

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Advertising FLC Using IGP . . . . . . . . . . . . . . . . . .   3
     2.1.  Advertising FLC Using IS-IS . . . . . . . . . . . . . . .   3
     2.2.  Advertising FLC Using OSPFv2  . . . . . . . . . . . . . .   3
     2.3.  Advertising FLC Using OSPFv3  . . . . . . . . . . . . . .   4
   3.  Advertising FRLD Using IGP  . . . . . . . . . . . . . . . . .   4
   4.  Signaling FLC and FRLD in BGP-LS  . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   As specified in [I-D.ietf-mpls-inband-pm-encapsulation], Flow-ID
   Label (FL) is used for MPLS flow identification and flow-based
   performance measurement with alternate marking method.

   Flow-ID Label may appear multiple times in a label stack with
   variable depth, so both the Flow-ID Label Capability (FLC) and the
   Flow-ID Readable Label Depth (FRLD) are defined in
   [I-D.ietf-mpls-inband-pm-encapsulation].

   Analogous to [I-D.ietf-isis-mpls-elc] and [I-D.ietf-ospf-mpls-elc],
   this document defines a mechanism to signal the FLC and the FRLD
   using IGP and BGP-LS, specifically, IGP includes IS-IS, OSPFv2 and
   OSPFv3.

1.1.  Terminology

   This memo makes use of the terms defined in
   [I-D.ietf-mpls-inband-pm-encapsulation] and [RFC8491].

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

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2.  Advertising FLC Using IGP

   Even though FLC is a property of the node, in some cases it is
   advantageous to associate and advertise the FLC with a prefix, so FLC
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