cfm default md

Function

The cfm default md command creates the default MD.

The undo cfm default md command deletes the default MD.

By default, the default MD is not created.

Format

cfm default md [ level level ]

undo cfm default md

Parameters

Parameter	Description	Value
level level	Specifies the level of the default MD.	The value is an integer that ranges from 0 to 7. A larger value indicates a higher MD priority. By default, the level of the default MD is 7 (highest level).

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To identify and locate faults on an MP or a link in an MD, create the default MD.

Precautions

IEEE 802.1ag has two versions: IEEE 802.1ag Draft 7 and IEEE Standard 802.1ag-2007. This command can be used only on the device running IEEE Standard 802.1ag-2007.

The level of the default MD must be higher than that of all MDs to which MEPs configured on the local device belong. In addition, the default MD must be of the same level as the higher-level MD. The default MD transmits higher-level CCMs and creates MIPs to send LTR messages.

On the device configured with the default MD, a MIP can be created based on the default MD in the MA that is not associated with a VLAN. The interface where the default MD is configured generates a MIP based on the MIP creation rule.

To modify the MD level, delete the default MD and reconfigure it.

Prerequisites

CFM has been enabled globally using the cfm enable (system view) command.

Example

# Create the default MD at level 6.

<HUAWEI> system-view
[HUAWEI] cfm enable
[HUAWEI] cfm default md level 6