PBB-EVPN ISID-based CMAC-Flush
draft-ietf-bess-pbb-evpn-isid-cmacflush-01
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.
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material or to cite them other than as "work in progress."
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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