Multi-Layer Active OAM for Service Function Chains in Networks
draft-wang-sfc-multi-layer-oam-10

Document Type Active Internet-Draft (individual)
Last updated 2017-09-22
Stream (None)
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
SFC WG                                                         G. Mirsky
Internet-Draft                                                 ZTE Corp.
Intended status: Standards Track                                 W. Meng
Expires: March 25, 2018                                  ZTE Corporation
                                                           B. Khasnabish
                                                            ZTE TX, Inc.
                                                                 C. Wang
                                                      September 21, 2017

     Multi-Layer Active OAM for Service Function Chains in Networks
                   draft-wang-sfc-multi-layer-oam-10

Abstract

   A multi-layer approach to the task of Operation, Administration and
   Maintenance (OAM) of Service Function Chains (SFCs) in networks is
   presented.  Based on the requirements towards active OAM for SFC, a
   multi-layer model is introduced.  A mechanism to detect and localize
   defects using the multi-layer model is also described.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 25, 2018.

Copyright Notice

   Copyright (c) 2017 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
   carefully, as they describe your rights and restrictions with respect

Mirsky, et al.           Expires March 25, 2018                 [Page 1]
Internet-Draft       Multi-Layer Active OAM for SFC       September 2017

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     2.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Multi-layer Model of SFC OAM  . . . . . . . . . . . . . . . .   4
   4.  Requirements for Multi-layer Model of Active OAM  . . . . . .   4
   5.  Active OAM Identification in SFC NSH  . . . . . . . . . . . .   6
   6.  SFC OAM multi-layer model . . . . . . . . . . . . . . . . . .   6
   7.  Echo Request/Echo Reply for SFC in Networks . . . . . . . . .   7
     7.1.  SFC Echo Request Transmission . . . . . . . . . . . . . .   9
     7.2.  SFC Echo Request Reception  . . . . . . . . . . . . . . .   9
     7.3.  SFC Echo Reply Transmission . . . . . . . . . . . . . . .   9
     7.4.  Overlay Echo Reply Reception  . . . . . . . . . . . . . .  10
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     9.1.  SFC Active OAM Protocol . . . . . . . . . . . . . . . . .  11
     9.2.  SFC Active OAM Message Type . . . . . . . . . . . . . . .  11
     9.3.  SFC Echo Request/Echo Reply Parameters  . . . . . . . . .  12
     9.4.  SFC Echo Request/Echo Reply Message Types . . . . . . . .  12
     9.5.  SFC Echo Reply Modes  . . . . . . . . . . . . . . . . . .  12
     9.6.  SFC TLV Type  . . . . . . . . . . . . . . . . . . . . . .  13
     9.7.  SFC OAM UDP Port  . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   [RFC7665] defines components necessary to implement Service Function
   Chain (SFC).  These include a classifier which performs
   classification of incoming packets.  A Service Function Forwarder
   (SFF) is responsible for forwarding traffic to one or more connected
Show full document text