Multicast in the Data Center Overview
draft-mcbride-armd-mcast-overview-01

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Document Type Active Internet-Draft (individual)
Authors Mike McBride  , Hui Liu 
Last updated 2012-03-09
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Internet Engineering Task Force                               M. McBride
Internet-Draft                                                    H. Lui
Intended status: Informational                       Huawei Technologies
Expires: September 11, 2012                               March 10, 2012

                 Multicast in the Data Center Overview
                  draft-mcbride-armd-mcast-overview-01

Abstract

   There has been much interest in issues surrounding massive amounts of
   hosts in the data center.  There was a discussion, in ARMD, involving
   the issues with address resolution for non ARP/ND multicast traffic
   in data centers with massive number of hosts.  This document provides
   a quick survey of multicast in the data center and should serve as an
   aid to further discussion of issues related to large amounts of
   multicast in the data center.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on September 11, 2012.

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   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   include Simplified BSD License text as described in Section 4.e of

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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Multicast Applications in the Data Center  . . . . . . . . . .  3
     2.1.  Client-Server Applications . . . . . . . . . . . . . . . .  3
     2.2.  Non Client-Server Multicast Applications . . . . . . . . .  4
   3.  L2 Multicast Protocols in the Data Center  . . . . . . . . . .  5
   4.  L3 Multicast solutions in the Data Center  . . . . . . . . . .  6
   5.  Challenges of using multicast in the Data Center . . . . . . .  7
   6.  Layer 3 / Layer 2 Topological Variations . . . . . . . . . . .  8
   7.  Address Resolution . . . . . . . . . . . . . . . . . . . . . .  9
     7.1.  Solicited-node Multicast Addresses for IPv6 address
           resolution . . . . . . . . . . . . . . . . . . . . . . . .  9
     7.2.  Direct Mapping for Multicast address resolution  . . . . .  9
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 10
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   10. Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   11. Informative References . . . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10

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1.  Introduction

   Data center servers often use IP Multicast to send data to clients or
   other application servers.  IP Multicast is expected to help conserve
   bandwidth in the data center and reduce the load on servers.
   Increased reliance on multicast, in next generation data centers,
   requires higher performance and capacity especially from the
   switches.  If multicast is to continue to be used in the data center,
   it must scale well within and between datacenters.  There has been
   much interest in issues surrounding massive amounts of hosts in the
   data center.  There was a discussion, in ARMD, involving the issues
   with address resolution for non ARP/ND multicast traffic in data
   centers.  This document provides a quick survey of multicast in the
   data center and should serve as an aid to further discussion of
   issues related to multicast in the data center.

   ARP/ND issues are not addressed in this document except to explain
   how address resolution occurs with multicast.  ARP/ND issues are
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