Identification of Overlay Operations, Administration, and Maintenance (OAM)
draft-mirsky-rtgwg-oam-identify-04

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RTGWG Working Group                                            G. Mirsky
Internet-Draft                                                 ZTE Corp.
Intended status: Informational                         February 26, 2020
Expires: August 29, 2020

 Identification of Overlay Operations, Administration, and Maintenance
                                 (OAM)
                   draft-mirsky-rtgwg-oam-identify-04

Abstract

   This document analyzes how the presence of Operations,
   Administration, and Maintenance (OAM) control command and/or special
   data is identified in some overlay networks and an impact on the
   choice of identification may have on OAM functionality.

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   This Internet-Draft will expire on August 29, 2020.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions used in this document . . . . . . . . . . . . . .   2
     2.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   2
     2.2.  Keywords  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  A Control Channel in an Overlay Network . . . . . . . . . . .   3
   4.  Overlay Network Encapsulations  . . . . . . . . . . . . . . .   4
     4.1.  Encapsulations with Meta-data . . . . . . . . . . . . . .   4
       4.1.1.  Available Solutions . . . . . . . . . . . . . . . . .   6
     4.2.  Fixed-size Encapsulations . . . . . . . . . . . . . . . .   6
     4.3.  Source Information Availability . . . . . . . . . . . . .   7
     4.4.  On-path OAM . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Conclusions . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  Acknowledgment  . . . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     9.2.  Informational References  . . . . . . . . . . . . . . . .   9
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Operations, Administration, and Maintenance (OAM) protocols are used
   to detect, localize defects in the network, and monitor network
   performance.  Some OAM functions, e.g., failure detection, work in
   the network proactively, while others, e.g., defect localization,
   usually performed on-demand.  These tasks achieved by a combination
   of active, passive, and hybrid OAM methods, as defined in [RFC7799].

   This document analyzes how the presence of Operations,
   Administration, and Maintenance (OAM) control command and/or special
   data, i.e., OAM packet, is identified in some overlay networks, and
   an impact the choice of identification may have on OAM functionality
   of active and hybrid OAM methods for the respective overlay network
   encapsulation.

2.  Conventions used in this document

2.1.  Terminology

   AMM Alternate Marking method

   BIER Bit Indexed Explicit Replication

   DetNet Deterministic Networks

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   GUE Generic UDP Encapsulation

   HTS Hybrid Two-step

   NSH Network Service Header

   NVO3 Network Virtualization Overlays

   OAM Operations, Administration and Maintenance

   SFC Service Function Chaining

   TLV Type-Length-Value