Transparent Interconnection of Lots of Links (TRILL) Transparent Transport over MPLS
RFC 8385

Document Type RFC - Informational (June 2018; No errata)
Last updated 2018-06-11
Replaces draft-muks-trill-transport-over-mpls
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Internet Engineering Task Force (IETF)                          M. Umair
Request for Comments: 8385                                         Cisco
Category: Informational                               S. Kingston Smiler
ISSN: 2070-1721                                            PALC Networks
                                                         D. Eastlake 3rd
                                                                  Huawei
                                                                 L. Yong
                                                             Independent
                                                               June 2018

          Transparent Interconnection of Lots of Links (TRILL)
                    Transparent Transport over MPLS

Abstract

   This document specifies methods to interconnect multiple TRILL
   (Transparent Interconnection of Lots of Links) sites with an
   intervening MPLS network using existing TRILL and VPLS (Virtual
   Private LAN Service) standards.  This document addresses two
   problems: 1) providing connection between more than two TRILL sites
   that are separated by an MPLS provider network and 2) providing a
   single logical virtualized TRILL network for different tenants that
   are separated by an MPLS provider network.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/rfc8385.

Umair, et al.                 Informational                     [Page 1]
RFC 8385          TRILL Transparent Transport over MPLS        June 2018

Copyright Notice

   Copyright (c) 2018 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
   (https://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 ................................................3
   2. TRILL-over-MPLS Model ...........................................5
   3. VPLS Model ......................................................5
      3.1. Entities in the VPLS Model .................................6
      3.2. TRILL Adjacency for VPLS Model .............................7
      3.3. MPLS Encapsulation for VPLS Model ..........................7
      3.4. Loop-Free Provider PSN/MPLS ................................7
      3.5. Frame Processing ...........................................7
   4. VPTS Model ......................................................7
      4.1. Entities in the VPTS Model .................................9
           4.1.1. TRILL Intermediate Router (TIR) ....................10
           4.1.2. Virtual TRILL Switch/Service Domain (VTSD) .........10
      4.2. TRILL Adjacency for VPTS Model ............................10
      4.3. MPLS Encapsulation for VPTS Model .........................10
      4.4. Loop-Free Provider PSN/MPLS ...............................11
      4.5. Frame Processing ..........................................11
           4.5.1. Multi-destination Frame Processing .................11
           4.5.2. Unicast Frame Processing ...........................11
   5. VPTS Model versus VPLS Model ...................................11
   6. Packet Processing between Pseudowires ..........................12
   7. Efficiency Considerations ......................................12
   8. Security Considerations ........................................12
   9. IANA Considerations ............................................13
   10. References ....................................................13
       10.1. Normative References ....................................13
       10.2. Informative References ..................................14
   Acknowledgements ..................................................15
   Authors' Addresses ................................................16

Umair, et al.                 Informational                     [Page 2]
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