OSPF Flooding Reduction in MSDC
draft-xu-ospf-flooding-reduction-in-msdc-00

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Network Working Group                                              X. Xu
Internet-Draft                                                    Huawei
Intended status: Standards Track                         January 4, 2017
Expires: July 8, 2017

                    OSPF Flooding Reduction in MSDC
              draft-xu-ospf-flooding-reduction-in-msdc-00

Abstract

   OSPF is commonly used as a underlay routing protocol for MSDC
   (Massively Scalable Data Center) networks.  This document proposes
   some extensions to OSPF so as to reduce the OSPF flooding within MSDC
   networks greatly.  The reduction of the OSPF flooding is much
   beneficial to improve the scalability of MSDC networks.  These
   modifications are applicable to both OSPFv2 and OSPFv3.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 8, 2017.

Copyright Notice

   Copyright (c) 2017 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
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Modifications to Current OSPF Behaviors . . . . . . . . . . .   4
     3.1.  OSPF Routers as Non-DRs . . . . . . . . . . . . . . . . .   4
     3.2.  Controllers as DR/BDR . . . . . . . . . . . . . . . . . .   5
   4.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   OSPF is commonly used as a underlay routing protocol for Massively
   Scalable Data Center (MSDC) networks.  In addition, centrolized
   controllers are becoming fundemental network elements in most MSDCs.
   One or more controllers are usually connected to all routers within
   the MSDC network via a Local Area Network (LAN) which is dedicated
   for network management purpose (called management LAN), as shown in
   Figure 1.

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           +----------+                  +----------+
           |Controller|                  |Controller|
           +----+-----+                  +-----+----+
                |DR                            |BDR
                |                              |
                |                              |
   ---+---------+---+----------+-----------+---+---------+-Management LAN
      |             |          |           |             |
      |Non-DR       |Non-DR    |Non-DR     |Non-DR       |Non-DR
      |             |          |           |             |
      |         +---+--+       |       +---+--+          |
      |         |Router|       |       |Router|          |
      |         *------*-      |      /*---/--*          |
      |        /     \   --    |    //    /    \         |
      |        /     \     --  |  //      /    \         |
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