
Copyright ® 2011 by Edgecore Networks Corp. All rights reserved. Confidential
IEEE 802.1ag
Common name: Connectivity Fault Management
• Scope: an end-to-end connection
• Proactive connectivity monitoring using continuity check messages,
fault verification through loop back messages, and fault isolation by
examining end-to-end connections between provider edge devices
or between customer edge devices
• CFM is implemented as a service level protocol based on service
instances which encompass only that portion of the metropolitan
area network supporting a specific customer
• CFM can also provide controlled management access to a hierarchy
of maintenance domains (such as the customer, service provider,
and equipment operator)
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