TRILL (Transparent Interconnection of Lots of Links): The ESADI (End Station Address Distribution Information) Protocol
draft-ietf-trill-esadi-00

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Document Type Active Internet-Draft (trill WG)
Last updated 2012-06-25
Replaces draft-hu-trill-rbridge-esadi
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TRILL Working Group                                         Hongjun Zhai
INTERNET-DRAFT                                                Fangwei Hu
Intended status: Proposed Standard                                   ZTE
Updates: 6325                                              Radia Perlman
                                                              Intel Labs
                                                         Donald Eastlake
                                                                  Huawei
Expires: December 24, 2012                                 June 25, 2012

         TRILL (Transparent Interconnection of Lots of Links):
   The ESADI (End Station Address Distribution Information) Protocol
                    <draft-ietf-trill-esadi-00.txt>

Abstract

   The IETF TRILL (Transparent Interconnection of Lots of Links)
   protocol provides least cost pair-wise data forwarding without
   configuration in multi-hop networks with arbitrary topologies and
   link technologies. TRILL supports for multi-pathing of both unicast
   and multicast traffic. Devices that implement the TRILL protocol are
   called RBridges (Routing Bridges) or TRILL Switches.

   The ESADI (End Station Address Distribution Information) protocol is
   a VLAN (Virtual Local Area Network) scoped way that TRILL switches
   can communicate end station addresses to each other.  An RBridge
   announcing VLAN-x connectivity (normally a VLAN-x appointed
   forwarder) and running the TRILL ESADI protocol can receive remote
   address information and/or transmit local address information for
   VLAN-x to other such RBridges.  This document updates RFC 6325,
   specifically the documentation of the ESADI protocol.

Status of This Memo

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

   Distribution of this document is unlimited. Comments should be sent
   to the TRILL working group mailing list: <rbridge@postel.org>.

   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."

H. Zhai, et al                                                  [Page 1]
INTERNET-DRAFT                                              TRILL: ESADI

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/1id-abstracts.html. The list of Internet-Draft
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H. Zhai, et al                                                  [Page 2]
INTERNET-DRAFT                                              TRILL: ESADI

Table of Contents

      1. Introduction............................................4
      1.1 Content and Precedence.................................5
      1.2 Terminology............................................5

      2. ESADI Protocol Overview.................................6
      3. ESADI DRB Determination................................10

      4. ESADI PDU processing...................................11
      4.1 Sending of ESADI PDUs.................................12
      4.2 Receipt of ESADI PDUs.................................13

      5. End Station Addresses..................................14
      5.1 Learning Confidence Level.............................14
      5.2 Forgetting End Station Addresses......................14

      6. ESADI-LSP Contents.....................................15
      6.1 ESADI Parameter Data..................................15
      6.2 MAC Reachability TLV..................................16

      7. IANA Considerations....................................17
      7.1 ESADI Participation and Capability Flags..............17
      7.2 TRILL GENAPP TLV......................................17

      8. Security Considerations................................19

      9. References.............................................20
      9.1 Normative references..................................20
      9.2 Informative References................................21

H. Zhai, et al                                                  [Page 3]
INTERNET-DRAFT                                              TRILL: ESADI

1. Introduction

   The IETF TRILL (Transparent Interconnection of Lots of Links)
   protocol [RFC6325] provides least cost pair-wise data forwarding
   without configuration in multi-hop networks with arbitrary topologies
   and link technologies, safe forwarding even during periods of
   temporary loops, and support for multi-pathing of both unicast and
   multicast traffic.  TRILL accomplishes this by using the IS-IS
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