mpls l2vpn trigger if-down

Function

The mpls l2vpn trigger if-down command enables the notification of physical layer faults.

The undo mpls l2vpn trigger if-down command disables the notification of physical layer faults.

By default, the notification of physical layer faults is disabled.

Format

mpls l2vpn trigger if-down

undo mpls l2vpn trigger if-down

Parameters

None

Views

100GE interface view, 10GE interface view, 25GE interface view, 400GE interface view, 40GE interface view, 50GE interface view, FlexE interface view, GE optical interface view, GE interface view, GE electrical interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2vpn	write

Usage Guidelines

Usage Scenario

On an MPLS network where a GE main interface, a 100GE interface, a 10GE WAN interface or a 10GE LAN interface is configured with a remote LDP VPWS connection, you can configure physical layer fault notification to expedite fault detection, so that upper-layer applications can quickly recover after a physical layer fault occurs.

After the notification of physical layer faults is enabled:

If a physical layer fault occurs on the PW side, the local AC interface is Down.
If a physical layer fault occurs on the AC side, the local PE notifies the peer PE of the fault and the peer AC interface is Down.
After the fault is rectified, the Down AC interface automatically becomes Up.
Pre-configuration Tasks
An LDP PW has been created using the mpls l2vc command.

Prerequisites

An LDP PW has been created using the mpls l2vc command.

Example

# Enable the notification of physical layer faults.

<HUAWEI> system-view
[~HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] mpls l2vc 1.1.1.1 1
[*HUAWEI-GigabitEthernet0/1/0] mpls l2vpn trigger if-down