Ethernet Client Signal Failure (ETH-CSF)

When relating to Ethernet Client Signal Failure (ETH-CSF), the following should be considered:

ETH-CSF Considerations

• ETH-CSF is used by an ECFM MEP entity to propagate to a peer MEP Entity the detection of a failure or defect event in an Ethernet client signal.
• ETH-CSF is generated by the Server and processed by the Client
• ETH-CSF is only applicable to point-to-point Ethernet transport applications.
• Configuration information required by an ECFM MEP to support ETH-CSF transmission are:
• Local MEG level
• ETH-CSF transmission period
• Priority
• Drop eligibility – Frames with ETH-CSF information are always marked as drop ineligible.
• Configuration information required by a MEP to support ETH-CSF reception is:
• Local MEG level – MEG level at which the receiving MEP operates.
• The ETH-CSF defect types:
• Client loss of signal (C-LOS)
• Client forward defect indication (C-FDI)
• Client reverse defect indication (C-RDI)
• Skylight Flex supports "Client loss of signal" (C-LOS)
• Skylight Flex supports ETH-CSF Client role with ETH-CSF reception and processing capability. ETH-CSF server component which generates ETH-CSF messages is not supported.