PBB-EVPN ISID-based CMAC-Flush
draft-snr-bess-pbb-evpn-isid-cmacflush-06
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2019-10-14
(latest revision 2019-07-26)
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BESS Workgroup J. Rabadan, Ed.
Internet Draft S. Sathappan
Intended status: Standards Track K. Nagaraj
Nokia
M. Miyake
T. Matsuda
Softbank
Expires: January 27, 2020 July 26, 2019
PBB-EVPN ISID-based CMAC-Flush
draft-snr-bess-pbb-evpn-isid-cmacflush-06
Abstract
Provider Backbone Bridging (PBB) can be combined with Ethernet VPN
(EVPN) to deploy ELAN services in very large 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 CMAC-Flush
mechanism that works for different Ethernet Segment BMAC address
allocation models. This document complements those CMAC-Flush
procedures for cases in which no PBB-EVPN Ethernet Segments are
defined (ESI 0) and an ISID-based CMAC-Flush granularity is desired.
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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Sathappan,Nagaraj,Rabadan et al.Expires January 27, 2020 [Page 1]
Internet-Draft PBB-EVPN ISID-based CMAC-flush July 26, 2019
The list of Internet-Draft Shadow Directories can be accessed at
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This Internet-Draft will expire on January 27, 2020.
Copyright Notice
Copyright (c) 2019 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
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Table of Contents
1. Problem Statement . . . . . . . . . . . . . . . . . . . . . . . 2
2. Solution requirements . . . . . . . . . . . . . . . . . . . . . 4
3. EVPN BGP Encoding for ISID-based CMAC-flush . . . . . . . . . . 5
4. Solution description . . . . . . . . . . . . . . . . . . . . . 6
4.1 ISID-based CMAC-Flush activation procedures . . . . . . . . 7
4.2 CMAC-Flush generation . . . . . . . . . . . . . . . . . . . 7
4.3 CMAC-Flush process upon receiving a CMAC-Flush
notification . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6. Conventions used in this document . . . . . . . . . . . . . . . 9
7. Security Considerations . . . . . . . . . . . . . . . . . . . . 9
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 9
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
9.1 Normative References . . . . . . . . . . . . . . . . . . . . 9
9.2 Informative References . . . . . . . . . . . . . . . . . . . 10
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 10
11. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 10
17. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 10
1. Problem Statement
[RFC7623] defines how Provider Backbone Bridging (PBB) can be
Sathappan,Nagaraj,Rabadan et al.Expires January 27, 2020 [Page 2]
Internet-Draft PBB-EVPN ISID-based CMAC-flush July 26, 2019
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
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