TRILL Smart Endnodes
draft-perlman-trill-smart-endnodes-00

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Last updated 2012-11-28
Replaced by draft-ietf-trill-smart-endnodes
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INTERNET-DRAFT                                             Radia Perlman
Intended Status: Proposed Standard                            Intel Labs
Expires: June 2, 2013                                          Fanwei Hu
                                                         ZTE Corporation
                                                         Donald Eastlake
                                                                  Huawei
                                                Kesava Vijaya Krupakaran
                                                                    Dell
                                                       November 29, 2012

                         TRILL Smart Endnodes 
                 draft-perlman-trill-smart-endnodes-00

Abstract

   This draft addresses the problem of the size and freshness of the
   endnode learning table in access RBridges, by allowing endnodes to
   volunteer for endnode learning and encapsulation/decapsulation. Such
   an endnode is known as a "smart endnode". Only the attached RBridge
   can distinguish a "smart endnode" from a "normal endnode". The smart
   endnode uses the nickname of the attached RBridge, so this solution
   does not consume extra nicknames.

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
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   Internet-Drafts.

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Copyright and License Notice

   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
   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.

Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Added information in TRILL-Hello . . . . . . . . . . . . . . .  4
   3.  Multi-homing . . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  7
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  7
     6.1  Normative References  . . . . . . . . . . . . . . . . . . .  7
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . .  7

 

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1  Introduction

   The IETF TRILL (Transparent Interconnection of Lots of Links)
   protocol implemented by devices called RBridges (Routing Bridges,
   [RFC6325]), provides optimal pair-wise data frame forwarding without
   configuration, safe forwarding even during periods of temporary
   loops, and support for multipathing of both unicast and multicast
   traffic.  TRILL accomplishes this by using IS-IS([RFC1195])
   ([RFC6165]) ([RFC6326bis])link state routing and enncapsulating
   traffic using a header that includes a hop count. Devices that
   implement TRILL are called "RBridges" (Routing Bridges) or TRILL  
   Switches.

   An RBridge that attaches to endnodes is called an "edge RBridge",
   whereas one that exclusively forwards encapsulated frames is known as
   a "transit RBridge". An edge RBridge traditionally is the one that
   encapsulates a native Ethernet packet with a TRILL header, or that
   receives a TRILL-encapsulated packet and removes the TRILL header. To
   encapsulate, the edge RBridge must keep an "endnode table" consisting
   of (MAC, TRILL egress switch nickname) pairs, for those MAC addresses
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