On-demand Continuity Check (CC) and Connectivity Verification(CV) for Overlay Networks
draft-ooamdt-rtgwg-demand-cc-cv-00

Abstract

This document defines Overlay Echo Request and Echo Reply that enable on-demand Continuity Check, Connectivity Verification among other operations in overlay networks.

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Copyright Notice

Copyright (c) 2016 IETF Trust and the persons identified as the document authors. All rights reserved.

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Table of Contents

• 1. Introduction
• 1.1. Conventions used in this document
• 1.1.1. Terminology
• 1.1.2. Requirements Language
• 2. On-demand Continuity Check and Connectivity Verification
• 2.1. Overlay Echo Request Transmission
• 2.2. Overlay Echo Request Reception
• 2.3. Overlay Echo Reply Transmission
• 2.4. Overlay Echo Reply Reception
• 3. IANA Considerations
• 3.1. Overlay Ping Type
• 3.2. Overlay Ping Parameters
• 3.3. Overlay Ping Message Types
• 3.4. Overlay Ping Reply Modes
• 4. Security Considerations
• 5. Acknowledgement
• 6. References
• 6.1. Normative References
• 6.2. Informative References
• Authors' Addresses

1. Introduction

Operations, Administration, and Maintenance (OAM) toolset provides methods for fault management and performance monitoring in each layer of the network, in order to improve their ability to support services with guaranteed and strict Service Level Agreements (SLAs) while reducing operational costs.

1.1. Conventions used in this document

1.1.1. Terminology

Term "Overlay OAM" used in this document interchangeably with longer version "set of OAM protocols, methods and tools for Overlay networks".

CC Continuity Check

CV Connectivity Verification

FM Fault Management

G-ACh Generic Associated Channel

Geneve Generic Network Virtualization Encapsulation

GUE Generic UDP Encapsulation

MPLS Multiprotocol Label Switching

NVO3 Network Virtualization Overlays

OAM Operations, Administration, and Maintenance

SFC Service Function Chaining

SFP Service Function Path

VxLAN Virtual eXtensible Local Area Network

VxLAN-GPE Generic Protocol Extension for VxLAN

1.1.2. Requirements Language

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 [RFC2119].

2. On-demand Continuity Check and Connectivity Verification

    
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      |         Version Number        |         Global Flags          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      | Message Type  |   Reply mode  |  Return Code  | Return S.code |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                        Sender's Handle                        |
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      |                         Sequence Number                       |
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      ~                              TLVs                             ~
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