PBB-EVPN ISID-based CMAC-Flush
draft-ietf-bess-pbb-evpn-isid-cmacflush-01

Document Type Active Internet-Draft (bess WG)
Authors Jorge Rabadan  , Senthil Sathappan  , Kiran Nagaraj  , Masahiro Miyake  , Taku Matsuda 
Last updated 2020-10-30
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BESS Workgroup                                           J. Rabadan, Ed.
Internet-Draft                                              S. Sathappan
Intended status: Standards Track                              K. Nagaraj
Expires: May 3, 2021                                               Nokia
                                                               M. Miyake
                                                              T. Matsuda
                                                                Softbank
                                                        October 30, 2020

                     PBB-EVPN ISID-based CMAC-Flush
               draft-ietf-bess-pbb-evpn-isid-cmacflush-01

Abstract

   Provider Backbone Bridging (PBB) can be combined with Ethernet VPN
   (EVPN) to deploy Ethernet Local Area Network (ELAN) services in large
   Multi-Protocol Label Switching (MPLS) networks (PBB-EVPN).  Single-
   Active Multi-homing and per-ISID Load-Balancing can be provided to
   access devices and aggregation networks.  In order to speed up the
   network convergence in case of failures on Single-Active Multi-Homed
   Ethernet Segments, PBB-EVPN defines a flush mechanism for Customer
   MACs (CMAC-flush) that works for different Ethernet Segment Backbone
   MAC (BMAC) address allocation models.  This document complements
   those CMAC-flush procedures for cases in which no PBB-EVPN Ethernet
   Segments are defined (the attachment circuit is associated to a zero
   Ethernet Segment Identifier) and a Service Instance Identifier based
   (ISID-based) CMAC-flush granularity is required.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on May 3, 2021.

Rabadan, et al.            Expires May 3, 2021                  [Page 1]
Internet-Draft       PBB-EVPN ISID-based CMAC-flush         October 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology and Conventions . . . . . . . . . . . . . . .   4
   2.  Solution requirements . . . . . . . . . . . . . . . . . . . .   5
   3.  EVPN BGP Encoding for ISID-based CMAC-flush . . . . . . . . .   6
   4.  Solution description  . . . . . . . . . . . . . . . . . . . .   7
     4.1.  ISID-based CMAC-Flush activation procedures . . . . . . .   8
     4.2.  CMAC-Flush generation . . . . . . . . . . . . . . . . . .   8
     4.3.  CMAC-flush process upon receiving a CMAC-flush
           notification  . . . . . . . . . . . . . . . . . . . . . .   9
   5.  Conclusions . . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   [RFC7623] defines how Provider Backbone Bridging (PBB) can be
   combined with Ethernet VPN (EVPN) to deploy ELAN services in very
   large MPLS networks.  [RFC7623] also describes how Single-Active
   Multi-homing and per-ISID Load-Balancing can be provided to access
   devices and aggregation networks.  When Access Ethernet/MPLS Networks
   exists, [I-D.ietf-bess-evpn-virtual-eth-segment] describes how
   virtual Ethernet Segments can be associated to a group of Ethernet
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