This chapter describes the commands used to manage the Connectivity Fault Management (CFM). CFM refers to the service OAM of Ethernet used to manage individual Layer 2 Ethernet services. The CFM protocol can discover and verify the path through 802.1 bridges and LANs. OcNOS adheres to the IEEE 802.1ag 2007 standard.

CFM includes the features required by ITU Y.1731 standard OAM Functions and Mechanisms for Ethernet Based Networks. This recommendation identifies the functions required to enable fault management (such as fault localization and defect detection) and performance monitoring in an Ethernet network.