Flush Mechanism for Customer MAC Addresses Based on Service Instance Identifier in Provider Backbone Bridging EVPN

Abstract

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.

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

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