ExtremeXOS® User Guide

To create a CFM segment, use the following command:

create cfm segment segment_name destination mac_addr {copy segment_name_to_copy}

To delete a CFM segment, use the following command:

delete cfm segment [segment_name | all]

To add a CFM domain to a CFM segment, use the following command:

configure cfm segment segment_name add domain domain_name association association_name

To delete a CFM domain from a CFM segment, use the following command:

configure cfm segment segment_name delete domain association

To configure the transmission interval between two consecutive DMM or two consecutive LMM frames, use the following command:

configure cfm segment segment_name {frame-delay | frame-loss} transmit-interval interval

The same transmit-interval is used for both delay and loss measurements.

To get separate values for delay and loss measurements, use the following command:

configure cfm segment frame-delay/frame-loss transmit interval interval

To configure the dot1p priority of a DMM frame, use the following command:

configure cfm segment segment_name frame-delay dot1p dot1p_priority

To configure the dot1p priority of a LMM frame, use the following command:

configure cfm segment segment_name frame-loss dot1p dot1p_priority

To configure the dot1p priority of the CFM segment, use the following command:

configure cfm segment segment_name dot1p dot1p_priority

The same priority is used for both delay and loss measurements.

To get separate values of priority for delay and loss measurements, use the following command:

configure cfm segment segment_name frame-delay dot1p dot1p_priority

configure cfm segment segment_name frame-loss dot1p dot1p_priority

To configure the alarm and clear threshold value for CFM segment, use the following command:

configure cfm segment segment_name [alarm-threshold | clear-threshold] value

To configure the window size to be used for calculating the threshold values, use the following command:

configure cfm segment segment_name window size

The same window size is used for both delay and loss measurements.

To get separate values of window size for delay and loss measurements, use the following:

configure cfm segment segment_name frame-loss window window_size

configure cfm segment segment_name frame-delay window window_size

To configure the window size of a DMM frame to be used for calculating the threshold values, use the following command:

configure cfm segment segment_name frame-delay window window_size

To configure the window size of a LMM frame to be used for calculating the threshold values, use the following command:

configure cfm segment segment_name frame-loss window window_size

To trigger DMM frames at the specified transmit interval, use the following command:

enable cfm segment frame-delay measurement segment_name mep mep_id [continuous | count ] value

To disable the transmission of the DMM frames for a particular CFM segment, use the following command:

disable cfm segment frame-delay measurement segment_name mep mep_id

To show the configuration and status of a specific CFM segment, use the following command:

show cfm segment {segment_name}

To show the configuration and status of a specific CFM segment doing delay measurement, use the following command:

show cfm segment frame-delay {segment_name]}

To show the configuration and status of a specific CFM segment doing loss measurement, use the following command:

show cfm segment frame-loss {segment_name]}

To display the frame delay statistics for the CFM segment, use the following command:

show cfm segment frame-delay statistics {segment-name}

To configure the timeout value for a CFM segment, use the following command:

configure cfm segment segment_name timeout msec

To add or delete the local MEP for a given CFM segment, use the following command:

configure cfm segment segment_name frame-loss [add|delete] mep mep_id

To set the percentage of frames lost in a measurement period so that it will be marked as SES (severely errored second), use the following command:

configure cfm segment segment_name frame-loss ses-threshold percent

To set the number of consecutive measurements used to determine the availability status of a CFM segment, use the following command:

configure cfm segment segment_name frame-loss consecutive frames

To start the transmission of LMM frames for the set transmit interval, use the following command:

enable cfm segment frame-loss measurement segment_name mep mep_id [continuous | count frames]

Note

For the above command, If the the segment is not completely configured, frames are not transmitted and an error occurs.

To stop the transmission of the LMM frames for a particular CFM segment, use the following command:

disable cfm segment frame-loss measurement segment_name mep mep_id

To display the frame loss or frame delay statistics for the CFM segment, use the following command:

show cfm segment {{segment_name} | {frame-delay {segment_name}} | {frame-loss {segment_name {mep mep_id}}}}

Note

Frame-loss measurements are not supported on platforms where the VLAN packet statistics are not retrieved, and on up-meps.

Managing a CFM Segment