Mechanisms for Directory Assisting TRILL
draft-dunbar-trill-scheme-for-directory-assist-02

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TRILL Working Group                                        L. Dunbar
Internet Draft                                           D. Eastlake
Intended status: Standard Track                               Huawei
Expires: April 2013                                 Radia Perlman
                                                                Intel
                                                      Igor Gashinsky
                                                                Yahoo
                                                          YiZhou Li
                                                             Huawei
                                                      October 20, 2012

                 Mechanisms for Directory Assisting TRILL
           draft-dunbar-trill-scheme-for-directory-assist-02.txt

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on April 20, 2009.

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   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
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   (http://trustee.ietf.org/license-info) in effect on the date of
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                       Expires April 20, 2013                 [Page 1]
Internet-Draft  Scheme for Directory assisted RBridge

   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

Abstract

   This draft describes the mechanisms of using directory server(s) to
   assist TRILL (Transparent Interconnection of Lots of Links) edge
   switches in reducing ARP/ND and unknown unicast flooding across
   TRILL domain in data center environment.

Conventions used in this document

   The term ''Subnet'' and ''VLAN'' are used interchangeably in this
   document because it is common to map one subnet to one VLAN. The
   term ''TRILL switch'' and ''RBridge'' are used interchangeably in this
   document.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC-2119 [RFC2119].

Table of Contents

   1. Introduction ................................................ 3
   2. Terminology ................................................. 3
   3. Push Model of Directory Assisted RBridge Edge in DC Environment4
      3.1. Minimize the mapping entries maintained by RBridge Edge . 4
      3.2. Messages to trigger pushing from directory .............. 5
      3.3. Actions by Push Directory Servers ....................... 5
      3.4. Applicable Components of ESADI used in Push Scheme ...... 6
      3.5. Aggregated entries to push down ......................... 6
   4. Pull model of Directory Assisted RBridge Edge in DC Environment7
   5. Push-Pull Hybrid Model ....................................... 9
   6. Manageability Considerations ................................. 9
   7. Security Considerations ...................................... 9
   8. IANA Considerations ........................................ 10
   9. Acknowledgments ............................................ 10
   10. References ................................................ 10
   Authors' Addresses ............................................ 12
   Intellectual Property Statement  .............................. 12
   Disclaimer of Validity ........................................ 13

Dunbar                 Expires April 20, 2013                 [Page 2]
Internet-Draft  Scheme for Directory assisted RBridge

1. Introduction

   [TRILL-Directory-Framework] describes the framework for using
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