TRILL Transparent Transport over MPLS
draft-ietf-trill-transport-over-mpls-08

Document Type Active Internet-Draft (trill WG)
Last updated 2018-03-20 (latest revision 2018-03-18)
Replaces draft-muks-trill-transport-over-mpls
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INTERNET-DRAFT                                            Mohammed Umair
Intended Status: Informational                  Kingston Smiler Selvaraj
                                                              IPInfusion
                                                     Donald Eastlake 3rd
                                                                  Huawei
                                                               Lucy Yong
                                                                    Self
Expires: September 17, 2018                               March 18, 2018

                 TRILL Transparent Transport over MPLS
               draft-ietf-trill-transport-over-mpls-08.txt

Abstract

   This document specifies methods to interconnect multiple Transparent
   Interconnection of Lots of links (TRILL) sites with an intervening
   MPLS network using existing TRILL and VPLS standards. This draft
   addresses two problems as follows:

   1) Providing connection between more than two TRILL sites that are
      separated by an MPLS provider network.

   2) Providing a single logical virtualized TRILL network for different
      tenants that are separated by an MPLS provider network.

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 authors or the TRILL working group mailing list:
   trill@ietf.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.

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   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
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M.Umair, K.Smiler, et al                                        [Page 1]
INTERNET-DRAFT                     TRILL Transparent Transport over MPLS

Table of Contents

      1. Introduction............................................3
      1.1. Terminology...........................................3

      2. TRILL Over MPLS Model...................................5

      3. VPLS Model..............................................6
      3.1 Entities in the VPLS Model.............................7
      3.2 TRILL Adjacency for VPLS model.........................8
      3.3 MPLS encapsulation for VPLS model......................8
      3.4 Loop Free provider PSN/MPLS............................8
      3.5 Frame Processing.......................................8

      4. VPTS Model..............................................9
      4.1 Entities in the VPTS Model............................11
      4.1.1 TRILL Intermediate Routers (TIR)....................11
      4.1.2 Virtual TRILL Switch/Service Domain (VTSD)..........12
      4.2 TRILL Adjacency for VPTS model........................12
      4.3 MPLS encapsulation for VPTS model.....................12
      4.4 Loop Free provider PSN/MPLS...........................12
      4.5. Frame Processing.....................................13
      4.5.1 Multi-Destination Frame Processing..................13
      4.5.2 Unicast Frame Processing............................13

      5. VPTS Model Versus VPLS Model...........................14
      6. Packet Processing Between Pseudowires..................14

      7. Efficiency Considerations..............................15
      8. Security Considerations................................15
      9. IANA Considerations....................................16

      Normative References......................................17
      Informative References....................................18

      Acknowledgements..........................................19
      Authors' Addresses........................................19

M.Umair, K.Smiler, et al                                        [Page 2]
INTERNET-DRAFT                     TRILL Transparent Transport over MPLS

1. Introduction

   The IETF Transparent Interconnection of Lots of Links (TRILL)
   protocol [RFC6325] [RFC7177] [RFC7780] provides transparent
   forwarding in multi-hop networks with arbitrary topology and link
   technologies using a header with a hop count and link-state routing.
   TRILL provides optimal pair-wise forwarding without configuration,
   safe forwarding even during periods of temporary loops, and support
   for multipathing of both unicast and multicast traffic. Intermediate
   Systems (ISs) implementing TRILL are called Routing Bridges
   (RBridges) or TRILL Switches
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