[bess] RFC 9541 on Flush Mechanism for Customer MAC Addresses Based on Service Instance Identifier (I-SID) in Provider Backbone Bridging EVPN (PBB-EVPN)

A new Request for Comments is now available in online RFC libraries.

        RFC 9541

        Title:      Flush Mechanism for Customer MAC 
                    Addresses Based on Service Instance Identifier 
                    (I-SID) in Provider Backbone Bridging EVPN (PBB-EVPN) 
        Author:     J. Rabadan, Ed.,
                    S. Sathappan,
                    K. Nagaraj,
                    M. Miyake,
                    T. Matsuda
        Status:     Standards Track
        Stream:     IETF
        Date:       March 2024
        Mailbox:    jorge.rabadan@nokia.com,
                    senthil.sathappan@nokia.com,
                    kiran.nagaraj@nokia.com,
                    masahiro.miyake@g.softbank.co.jp,
                    taku.matsuda@g.softbank.co.jp
        Pages:      11
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-bess-pbb-evpn-isid-cmacflush-09.txt

        URL:        https://www.rfc-editor.org/info/rfc9541

        DOI:        10.17487/RFC9541

Provider Backbone Bridging (PBB) can be combined with Ethernet
Virtual Private Networks (EVPNs) to deploy Ethernet Local Area
Network (E-LAN) services in large Multiprotocol Label Switching
(MPLS) networks. That combination is what we refer to as "PBB-EVPN."
Single-Active multihoming and per Service Instance Identifier (I-SID)
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 multihomed Ethernet Segments (ESs),
PBB-EVPN defines a flush mechanism for Customer MACs (C-MACs) called
"C-MAC flush" that works for different Ethernet Segment Backbone MAC
(B-MAC) address allocation models. This document complements those
C-MAC flush procedures for cases in which no PBB-EVPN ESs are defined
(i.e., the attachment circuit is associated with a zero Ethernet
Segment Identifier (ESI)) and the C-MAC flush requires I-SID-level
granularity.

This document is a product of the BGP Enabled ServiceS Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
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