Chapter 131 Ethernet Oam Connectivity Fault Management - Dell PowerConnect J-EX4200-24T Software Manual

CHAPTER 131
Ethernet OAM Connectivity Fault
Management
Ethernet OAM Connectivity Fault Management—Overview
Understanding Ethernet OAM Connectivity Fault Management for a J-EX Series Switch
Ethernet OAM Connectivity Fault Management—Overview on page 3463
Example of Ethernet OAM Connectivity Fault Management Configuration on page 3464
Configuring Ethernet OAM Connectivity Fault Management on page 3468
Configuration Statements for Ethernet OAM Connectivity Fault Management on page 3472
Operational Mode Commands for Ethernet OAM Connectivity Fault
Management on page 3492
Understanding Ethernet OAM Connectivity Fault Management for a J-EX Series
Switch on page 3463
Ethernet interfaces on J-EX Series Switches and the Junos OS for J-EX Series switches
support the IEEE 802.1ag standard for Operation, Administration, and Management
(OAM). The IEEE 802.1ag specification provides for Ethernet connectivity fault
management (CFM). CFM monitors Ethernet networks that might comprise one or more
service instances for network-compromising connectivity faults.
The major features of CFM are:
Fault monitoring using the continuity check protocol. This is a neighbor discovery and
health check protocol that discovers and maintains adjacencies at the VLAN or link
level.
Path discovery and fault verification using the linktrace protocol.
Fault isolation using the loopback protocol.
CFM partitions the service network into various administrative domains. For example,
operators, providers, and customers might be part of different administrative domains.
Each administrative domain is mapped into one maintenance domain providing enough
information to perform its own management, thus avoiding security breaches and making
end-to-end monitoring possible.
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