create cfm domain dns md-level

create cfm domain dns name md-level level


Creates a maintenance domain (MD) in the DNS name format and assigns an MD level to that domain.

Syntax Description


Assigns the name you want for this domain, using the DNS name format. Enter alphanumeric characters for this format; the maximum is 43 characters.


Specifies the MD level you are assigning to this domain. Enter a value between 0 and 7.



Usage Guidelines

You can have up to 8 domains on a switch, and each one must have a unique MD level.

You assign each domain a maintenance domain (MD) level, which function in a hierarchy for forwarding CFM messages. The levels are from 0 to 7; with the highest number being superior in the hierarchy.

The IEEE standard 801.2ag specifies different levels for different network users, as follows:
  • 5 to 7 for end users

  • 3 and 4 for Internet service providers (ISPs)

  • 0 to 2 for operators (entities carrying the information for the ISPs)


    MEPs with intervals 3 and 10 cannot be created in this domain as the domain name format is of dns type.


The following command creates a domain, using the DNS name format, named extreme and assigns that domain an MD level of 2:

create cfm domain dns extreme md-level 2


This command was first available in ExtremeXOS 11.4.

Platform Availability

This command is available on ExtremeSwitching 5320, 5420, 5520, and 5720 series switches.