TRILL: Campus Label and Priority Regions
draft-ietf-trill-rbridge-vlan-mapping-09

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Document Type Active Internet-Draft (trill WG)
Last updated 2013-07-04
Replaces draft-perlman-trill-rbridge-vlan-mapping
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TRILL Working Group                                        Radia Perlman
INTERNET-DRAFT                                                Intel Labs
Intended status: Proposed Standard                     Anil Rijhsinghani
                                                           HP Networking
                                                         Donald Eastlake
                                                                  Huawei
                                                           Ayan Banerjee
                                                                 Insieme
                                                             Dinesh Dutt
                                                                 Cumulus
Expires January 2, 2014                                     July 3, 2013

                TRILL: Campus Label and Priority Regions
             <draft-ietf-trill-rbridge-vlan-mapping-09.txt>

Abstract

   Within a TRILL campus, the data label (VLAN or Fine Grained Label)
   and priority of TRILL encapsulated frames is preserved. However, in
   some cases it may be desired that data label and/or priority be
   mapped at the boundary between regions of such a campus. This
   document describes an optional TRILL switch feature to provide this
   function.

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.

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   Task Force (IETF), its areas, and its working groups.  Note that
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   Drafts.

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R. Perlman, et al.                                              [Page 1]
INTERNET-DRAFT                         TRILL: Label and Priority Regions

Table of Contents

      1. Introduction............................................3
      1.1 TRILL Campus Regions...................................4
      1.2 Terminology............................................5

      2. Internal and Cut Set Configuration and Mappings.........6
      2.1 Multiple Crossings.....................................7
      2.2 Native Frame Considerations............................8
      2.3 More than Two Regions..................................8
      2.4 Mapping Implementation.................................9

      3. End Node Address Learning Between Regions..............11
      4. Cut Set Attraction of Labels and Multicast.............12
      5. Advertisement of Label and Priority Mappings...........13

      6. IANA Considerations....................................13
      7. Security Considerations................................13
      8. Normative References...................................14
      9. Informative References.................................14
      Appendix Z: Change Summary................................15
      Authors' Addresses........................................18

R. Perlman, et al.                                              [Page 2]
INTERNET-DRAFT                         TRILL: Label and Priority Regions

1. Introduction

   The IETF TRILL protocol provides transparent forwarding, with a
   number of additional features, by use of link state routing and
   encapsulation with a hop count as specified in [RFC6325] [RFC6327]
   [RFCclear] and [RFCfgl].

   Devices implementing the TRILL protocol are called TRILL switches or
   RBridges (Routing Bridges). A TRILL campus is an area of TRILL
   switches and possibly bridges bounded by and interconnecting end
   stations and Layer 3 routers, analogous to a customer bridge LAN
   (which is an area of bridges interconnecting end stations, Layer 3
   routers, and TRILL switches). In a TRILL campus, native frames (as
   defined in [RFC6325]), when they arrive at their first or ingress
   RBridge, are encapsulated, routed in encapsulated form via zero or
   more transit TRILL switches, and finally decapsulated and delivered
   by their egress TRILL switch or switches.

   TRILL switch ports have some features specified in IEEE 802.1Q as
   described in [RFC6325], with TRILL being implemented above those
   ports. Such ports provide for the association of incoming frames with
   a particular frame priority and customer VLAN (see Appendix D of
   [RFC6325]) or, in TRILL, 24-bit Fine Grained Label [RFCfgl].

   Bridge ports can map frame priorities, a process called "priority
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