Ethernet Connectivity Fault Management (Eth-Cfm) - Alcatel-Lucent 7750 SR Manual

Os services guide

Hide thumbs Also See for 7750 SR:

Table of Contents

Ethernet Connectivity Fault Management (ETH-CFM)

Ethernet Connectivity Fault Management (ETH-CFM) is defined in two similar standards: IEEE

802.1ag and ITU-T Y.1731. They both specify protocols, procedures, and managed objects to

support transport fault management, including discovery and verification of the path, detection

and isolation of a connectivity fault for each Ethernet service instance. CFM functionalities are

supported on SR and ESS platforms.

IEEE 802.1ag can detect:

CFM uses Ethernet frames and can be distinguished by its ether-type and special Ethernet

multicast addresses. CFM frames are only processed by IEEE MAC bridges. With CFM,

interoperability can be achieved between different vendor equipment in the service provider

network up to and including customer premises bridges. The following table lists CFM-related

acronyms used in this section.

7750 SR OS Services Guide

Loss of connectivity

Unidirectional loss

Merging of services

Continuity check message

Connectivity fault management

Loopback message

Loopback reply

Linktrace message

Linktrace reply

Maintenance entity

Maintenance association

Maintenance association identifier

Maintenance domain

Maintenance association end point

Maintenance association end point identifier

MIP half function

Maintenance domain intermediate point