TRILL (Transparent Interconnection of Lots of Links) Edge Directory Assistance Framework
draft-ietf-trill-directory-framework-03

The information below is for an old version of the document
Document Type Active Internet-Draft (trill WG)
Last updated 2013-02-21
Replaces draft-dunbar-trill-directory-assisted-edge
Stream IETF
Intended RFC status (None)
Formats pdf htmlized bibtex
Reviews
Stream WG state WG Document
Document shepherd None
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
TRILL working group                                 L. Dunbar
Internet Draft                                    D. Eastlake
Category: Informational                                Huawei
                                                Radia Perlman
                                                        Intel
                                               Igor Gashinsky
                                                        Yahoo

Expires: April 2013                         February 21, 2013

          TRILL (Transparent Interconnection of Lots of Links)
                   Edge Directory Assistance Framework

                draft-ietf-trill-directory-framework-03

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups. Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other
   documents at any time. It is inappropriate to use Internet-Drafts
   as reference material or to cite them other than as "work in
   progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt.

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Dunbar, et al           Expires November 2013                 [Page 1]
Internet-Draft    TRILL Directory Assistance Framework  Oct 2012

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

Abstract

   Edge RBridges currently learn the mapping between MAC addresses
   and their egress RBridges by observing the data packets traversed
   or by the TRILL ESADI protocol. When ingress RBridge receives a
   data frame whose destination address (MAC&VLAN) that RBridge does
   not know, the data frame is flooded within the VLAN across the
   TRILL campus.

   This draft describes the framework for using directory services
   to assist edge RBridges by reducing multi-destination frames,
   particularly unknown unicast frames flooding, and ARP/ND,
   improving TRILL (Transparent Interconnection of Lots of Links)
   network scalability in environments such as data centers.

Table of Contents

   1. Introduction ................................................ 4
   2. Terminology ................................................. 5
   3. RBridge Campus Impact of Massive Number of End Stations in a
   DC  ............................................................ 5
      3.1. Issues of Flooding Based Learning in DCs ............... 5
      3.2. Some Examples .......................................... 7
   4. Benefits of Directory Assisted Edge RBridge in DC ........... 8
   5. Generic operation of Directory Assistance ................... 9
      5.1. Information in Directory for Edge Bridges .............. 9
      5.2. Push Model ............................................ 10
      5.3. Pull Model ............................................ 12
   6. Conclusion and Recommendation............................... 14
   7. Security Considerations..................................... 14
   8. IANA Considerations ........................................ 14
   9. Acknowledgements ........................................... 14
   10. References ................................................ 14
      10.1. Normative References.................................. 14

Dunbar, et al                                           [Page 2]
Internet-Draft    TRILL Directory Assistance Framework  Oct 2012

      10.2. Informative References................................ 15
   Authors' Addresses ............................................ 15

Dunbar, et al                                           [Page 3]
Internet-Draft    TRILL Directory Assistance Framework  Oct 2012

1. Introduction

   Edge RBridges (devices implementing [RFC6325], also known as
   TRILL (Transparent Interconnection of Lots of Links) Switches)
Show full document text