Service Function Chaining (SFC) Operations, Administration and Maintenance (OAM) Framework
draft-ietf-sfc-oam-framework-15

Document Type Active Internet-Draft (sfc WG)
Last updated 2020-07-17 (latest revision 2020-05-25)
Replaces draft-aldrin-sfc-oam-framework
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Details
Internet Engineering Task Force                                S. Aldrin
Internet-Draft                                                    Google
Intended status: Informational                         C. Pignataro, Ed.
Expires: November 26, 2020                                 N. Kumar, Ed.
                                                                   Cisco
                                                             R. Krishnan
                                                                  VMware
                                                             A. Ghanwani
                                                                    Dell
                                                            May 25, 2020

                    Service Function Chaining (SFC)
       Operations, Administration and Maintenance (OAM) Framework
                    draft-ietf-sfc-oam-framework-15

Abstract

   This document provides a reference framework for Operations,
   Administration and Maintenance (OAM) for Service Function Chaining
   (SFC).

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on November 26, 2020.

Copyright Notice

   Copyright (c) 2020 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Aldrin, et al.          Expires November 26, 2020               [Page 1]
Internet-Draft              SFC OAM Framework                   May 2020

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Document Scope  . . . . . . . . . . . . . . . . . . . . .   4
     1.2.  Acronyms and Terminology  . . . . . . . . . . . . . . . .   4
       1.2.1.  Acronyms  . . . . . . . . . . . . . . . . . . . . . .   4
       1.2.2.  Terminology . . . . . . . . . . . . . . . . . . . . .   5
   2.  SFC Layering Model  . . . . . . . . . . . . . . . . . . . . .   5
   3.  SFC OAM Components  . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  The SF Component  . . . . . . . . . . . . . . . . . . . .   8
       3.1.1.  SF Availability . . . . . . . . . . . . . . . . . . .   8
       3.1.2.  SF Performance Measurement  . . . . . . . . . . . . .   9
     3.2.  The SFC Component . . . . . . . . . . . . . . . . . . . .   9
       3.2.1.  SFC Availability  . . . . . . . . . . . . . . . . . .   9
       3.2.2.  SFC Performance Measurement . . . . . . . . . . . . .  10
     3.3.  Classifier Component  . . . . . . . . . . . . . . . . . .  10
     3.4.  Underlay Network  . . . . . . . . . . . . . . . . . . . .  10
     3.5.  Overlay Network . . . . . . . . . . . . . . . . . . . . .  10
   4.  SFC OAM Functions . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Connectivity Functions  . . . . . . . . . . . . . . . . .  11
     4.2.  Continuity Functions  . . . . . . . . . . . . . . . . . .  11
     4.3.  Trace Functions . . . . . . . . . . . . . . . . . . . . .  12
     4.4.  Performance Measurement Functions . . . . . . . . . . . .  12
   5.  Gap Analysis  . . . . . . . . . . . . . . . . . . . . . . . .  13
     5.1.  Existing OAM Functions  . . . . . . . . . . . . . . . . .  13
     5.2.  Missing OAM Functions . . . . . . . . . . . . . . . . . .  14
     5.3.  Required OAM Functions  . . . . . . . . . . . . . . . . .  14
   6.  Operational Aspects of SFC OAM at the Service Layer . . . . .  14
     6.1.  SFC OAM Packet Marker . . . . . . . . . . . . . . . . . .  14
     6.2.  OAM Packet Processing and Forwarding Semantic . . . . . .  15
     6.3.  OAM Function Types  . . . . . . . . . . . . . . . . . . .  16
   7.  Candidate SFC OAM Tools . . . . . . . . . . . . . . . . . . .  16
     7.1.  ICMP  . . . . . . . . . . . . . . . . . . . . . . . . . .  16
     7.2.  BFD/Seamless-BFD  . . . . . . . . . . . . . . . . . . . .  16
     7.3.  In-Situ OAM . . . . . . . . . . . . . . . . . . . . . . .  17
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