IEEE 802.1ag Long MAID format

Maintenance Association Identifier (MAID) is a 48 byte field included in the Continuity Check Message (CCM) frame to identify the Maintenance Domain (MD) and Maintenance Association (MA) to which this CCM belongs to. This helps in detecting cross connection errors in the service.

IEEE 802.1ag standard defines two possible formats for MAID.

Short format which does not include MD maintenance domain name and has only short MA name.
Long format which includes MD name.

By default, short MAID format is configured when a MA is configured. You can set the MAID format for a particular maintenance association to long, using the maid-format command.

device(config)# protocol cfm
device(config-cfm)# domain name md1 level 4
device(config-cfm-md-md1)# ma-name ma1 id 30 vlan-id 30 priority 7
device(config-cfm-md-md1)# maid-format long

The no form of the command sets the maid format back to short. For more information on commands, please refer the SLX-OS Command Reference guide.

Note

The maid format cannot be changed after a MEP is configured under that MA. You must delete the MEP and then change the MAID format.