Scaling the Address Resolution Protocol for Large Data Centers (SARP)
draft-nachum-sarp-01

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Network Working Group                                      Youval Nachum
Internet Draft                                               Tal Mizrahi
Intended status: Informational                           Ilan Yerushalmi
Expires: September 2012                                          Marvell
                                                          March 11, 2012

       Scaling the Address Resolution Protocol for Large Data Centers
                                  (SARP)
                         draft-nachum-sarp-01.txt

Abstract

   This  document  provides  a  recommended  architecture  and  network
   operation  named  SARP.  SARP  is  based  on  fast  proxies  that
   significantly  reduce  broadcast  domains  and  ARP/ND  broadcast
   transmissions. SARP supports smooth and fast virtual machine (VM)
   mobility without any modification to the VM, while keeping the
   connection up and running efficiently.  SARP is targeted for massive
   scaling data centers with a significant number of VMs using ARP and
   ND protocols.

Status of this Memo

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   This Internet-Draft will expire on September 11, 2012.

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Copyright Notice

   Copyright (c) 2012 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents
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   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. SARP Motivation.......................................... 3
      1.2. SARP Overview ........................................... 3
      1.3. SARP Deployment Options ................................. 5
   2. Abbreviations Used in this Document .......................... 5
   3. SARP Description ............................................. 6
      3.1. Control Plane: ARP/ND ................................... 6
         3.1.1. ARP/ND Request for a Local VM ...................... 6
         3.1.2. ARP/ND Request for a Remote VM ..................... 6
      3.2. Data Plane: Packet Transmission ......................... 7
         3.2.1. Local Packet Transmission .......................... 7
         3.2.2. Packet Transmission Between Sites .................. 7
      3.3. VM Local Migration ...................................... 8
      3.4. VM Migration from One Site to Another ................... 8
         3.4.1. ARP/ND Table of Mobile VMs ......................... 9
      3.5. Multicast and Broadcast ................................ 10
      3.6. Non IP packet .......................................... 10
      3.7. ARP caching ............................................ 10
      3.8. SARP Interaction with Overlay networks ................. 10
   4. Security Considerations ..................................... 11
   5. IANA Considerations ......................................... 11
   6. References .................................................. 11
      6.1. Normative References ................................... 11
      6.2. Informative References ................................. 11
   7. Acknowledgments ............................................. 12

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1. Introduction

1.1. SARP Motivation

   SARP provides operational recommendations that mitigate performance
   degradation due to the data center architecture. SARP can be used in
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