Configuration Guide

Table Of Contents
©2021 Extreme Networks, Inc. All rights reserved
October 2021
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2.7
Backbone Edge Bridges (BEB) and Backbone
Core Bridges (BCB)
The BEB provides the boundary between the MACinMAC SPBM domain and virtualized service domain.
At the BEBs, VLANs or VRFs are mapped into ISIDs based on the local service provisioning. As such, all
nodes within the SPBM backbone will have no knowledge of the addresses within the virtualized services
VSNs (C-MAC or IP addresses). Only the BEB nodes will contain a C-MAC table (or FDB), and if configured,
a VRF IP forwarding table. All backbone nodes will have no knowledge of the virtualized service VSNs, C-
MAC and VRF addresses.
In the SPBM core, the bridges are referred to as Backbone Core Bridges (BCBs). BCBs forward
encapsulated traffic based on the BMAC-DA.
2.8
Connectivity Fault Management (CFM)
Platform
(current Rel.)
Feature
Modular OS VSP OS (VOSS) Stackable OS (BOSS)
ERS 8800
(7.2)
VSP 9000
(4.1)
VSP 8000
VSP 7200
(5.0)
VSP 4000
(5.0)
VSP7000
(10.4)
ERS4800
(5.9)
ERS5900
(7.0)
CFM for SPB
BVLAN
CFM for CVLAN
(7.1.1)
(3.4) tbd
-
-
-
Simplified CFM
configuration
(3.4)
(3.1)
Full EDM support
(7.1.1)
Table 2: CFM Support
Connectivity Fault Management (CFM) offers loopbacks and link trace for troubleshooting and continuity
checks for fast fault detection - loopback and link trace features of CFM are supported. These commands
allow operators, service providers and customers to verify the connectivity that they provide or utilize and
to debug systems. This is accomplished through:
Loopback messaging to an intermediate or endpoint within a domain for the purpose of fault
verification. (LBM)
Linktrace messaging to a maintenance endpoint with intermediate points responding to indicate
the path of the traffic within a domain for the purpose of fault isolation. (LTM)
IEEE 802.1ag – Connectivity Fault Management (Per Service/VLAN OAM)
Maintenance Domain – MD
MD is management domain on a network, typically owned and operated by a single entity
MD are configured with Names and Levels, where the eight levels range from 0 to 7.