Virtual Machine Mobility Protocol for L2 and L3 Overlay Networks
draft-ietf-nvo3-vmm-04

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Network Working Group                                        B. Sarikaya
Internet-Draft                                       Denpel Informatique
Intended status: Best Current Practice                         L. Dunbar
Expires: February 10, 2019                                    Huawei USA
                                                           B. Khasnabish
                                                           ZTE (TX) Inc.
                                                              T. Herbert
                                                              Quantonium
                                                              S. Dikshit
                                                           Cisco Systems
                                                          August 9, 2018

    Virtual Machine Mobility Protocol for L2 and L3 Overlay Networks
                       draft-ietf-nvo3-vmm-04.txt

Abstract

   This document describes a virtual machine mobility protocol commonly
   used in data centers built with overlay-based network virtualization
   approach.  For layer 2, it is based on using a Network Virtualization
   Authority (NVA)-Network Virtualization Edge (NVE) protocol to update
   Address Resolution Protocol (ARP) table or neighbor cache entries at
   the NVA and the source NVEs tunneling in-flight packets to the
   destination NVE after the virtual machine moves from source NVE to
   the destination NVE.  For Layer 3, it is based on address and
   connection migration after the move.

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
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   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 February 10, 2019.

Sarikaya, et al.        Expires February 10, 2019               [Page 1]
Internet-Draft            VM Mobility Solution               August 2018

Copyright Notice

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   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   3
   3.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Overview of the protocol  . . . . . . . . . . . . . . . . . .   4
     4.1.  VM Migration  . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Task Migration  . . . . . . . . . . . . . . . . . . . . .   6
       4.2.1.  Address and Connection Migration in Task Migration  .   7
   5.  Handling Packets in Flight  . . . . . . . . . . . . . . . . .   8
   6.  Moving Local State of VM  . . . . . . . . . . . . . . . . . .   9
   7.  Handling of Hot, Warm and Cold Virtual Machine Mobility . . .   9
   8.  Virtual Machine Operation . . . . . . . . . . . . . . . . . .  10
     8.1.  Virtual Machine Lifecycle Management  . . . . . . . . . .  10
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   12. Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  11
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     13.2.  Informative references . . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   Data center networks are being increasingly used by telecom operators
   as well as by enterprises.  In this document we are interested in
   overlay-based data center networks supporting multitenancy.  These
   networks are organized as one large Layer 2 network geographically
   distributed in several buildings.  In some cases geographical
   distribution can span across Layer 2 boundaries.  In that case need