create cfm segment destination

create cfm segment segment_name destination mac_addr {copy segment_name_to_copy}


Creates a CFM segment.

Syntax Description


An alpha numeric string identifying the segment name.


Specifies the MAC address.


Specifies the CFM segment whose configuration is to be copied.



Usage Guidelines

Use this command to explicitly create a CFM segment where the segment name is a 32-byte long alpha-numeric character string.


The following command creates a CFM segment named segment-new using MAC address 00:11:22:11:33:11 and copying segment-old:

create cfm segment segment-new destination 00:11:22:11:33:11 copy segment-old
Here, the copy existing cfm segment is an optional parameter, and if used, the following configurations from the existing CFM segment are copied to the newly created segment:
  • DMM transmission interval

  • Class of service

  • Threshold values

  • Measurement window size

  • Timeout value


    The copy option is not shown in "show config" as it is used only for copying the existing values when creating a segment.

If you later configure any of the above mentioned information in segment-new, the old value(s) which were copied from segment-old will be overwritten with the new one in segment-new, as is done for any other commands. The same will not be true on the reverse case. If you modify the values of segment-old, the modified value will NOT be propagated to the CFM segments which use segment-old's configurations. In other words, the configurations of segment-old that are at the time of creating segment-new will alone be copied and not any other changes that are made to segment-old later on.


This command was first available in ExtremeXOS 12.3.

Platform Availability

This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, X870, 5320, 5420, and 5520 series switches.