mpls mldp bfd enable

Function

The mpls mldp bfd enable command enables dynamic BFD to monitor an mLDP P2MP tunnel.

The undo mpls mldp bfd enable command disables dynamic BFD from monitoring an mLDP P2MP tunnel.

By default, this function is disabled.

Format

mpls mldp bfd enable

undo mpls mldp bfd enable

Parameters

None

Views

MPLS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-ldp	write

Usage Guidelines

Usage Scenario

No tunnel protection is provided for mLDP P2MP tunnels. If an LSP fails, traffic can only be switched using route change-induced hard convergence, which renders low performance. BFD for mLDP P2MP tunnel applies to NG-MVPNs and VPLS networks on which mLDP P2MP trees with primary and backup roots are configured. If a P2MP tunnel fails, BFD for mLDP P2MP tunnel rapidly detects the fault and switches traffic to the backup tunnel, which reduces traffic loss and improves fault convergence performance in an NG-MVPN over mLDP P2MP scenario or a VPLS over mLDP P2MP scenario.

Prerequisites

The MPLS view has been displayed using the mpls command.

Example

# Enable dynamic BFD to monitor an mLDP P2MP tunnel.

<HUAWEI> system-view
[~HUAWEI] bfd
[*HUAWEI-bfd] quit
[*HUAWEI] mpls
[*HUAWEI-mpls] mpls mldp bfd enable