cfm if-down trigger ccm-send-stop

Function

The cfm if-down trigger ccm-send-stop command triggers the MEP on an interface to stop sending CCMs when the interface goes Down.

The undo cfm if-down trigger ccm-send-stop command restores the default configuration.

By default, the MEP on an interface is not triggered to stop sending CCMs when the interface goes Down.

Format

cfm if-down trigger ccm-send-stop

undo cfm if-down trigger ccm-send-stop

Parameters

None

Views

Interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Figure 1 VLAN stacking scenario with an inward-facing MEP configured

As shown in Figure 1, in a VLAN stacking scenario with an inward-facing MEP configured, a VLL is configured between Switch1 and Switch2, 802.1ag detection is configured between Switch2 and Switch3, and the MEP on Switch3 is inward-facing. If the interface where the MEP resides goes Down, to prevent the MEP from continuing to send CCMs so that other services can detect the fault information detected by CC, run the cfm if-down trigger ccm-send-stop command in the interface view.

Prerequisites

Run the cfm enable command to enable CFM globally.

Example

# Trigger the MEP on GE 0/0/1 to stop sending CCMs when the interface goes Down.

<HUAWEI> system-view
[HUAWEI] cfm enable
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] cfm if-down trigger ccm-send-stop