mldp label-withdraw-delay

Function

The mldp label-withdraw-delay command sets the timer for delaying in deleting mLDP P2MP LSP labels.

The undo mldp label-withdraw-delay command restores the default delay time.

The default timer period is 2s.

Format

mldp label-withdraw-delay delay-time-value

undo mldp label-withdraw-delay [ delay-time-value ]

Parameters

Parameter	Description	Value
delay-time-value	Sets the timer for delaying in deleting mLDP P2MP LSP labels.	The value is an integer ranging from 2 to 60, in seconds.

Parameter

Description

Value

delay-time-value

Sets the timer for delaying in deleting mLDP P2MP LSP labels.

The value is an integer ranging from 2 to 60, in seconds.

Views

MPLS-LDP view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-ldp	write

Usage Guidelines

Usage Scenario

On an mLDP P2MP network, if a downstream node detects a link fault, the node automatically starts the timer for delaying in deleting mLDP P2MP LSP labels. After the timer times out, the downstream node sends a message to instruct an upstream node to withdraw a label. This timer helps prevent local link flapping from spreading globally and prevent global LSPs from alternating between being torn down and established.

Prerequisites

mLDP P2MP has been enabled using the mldp p2mp command in the MPLS-LDP view.

Example

# Set the delay timer to 3s for deleting mLDP P2MP LSP labels.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls ldp
[*HUAWEI-mpls-ldp] mldp p2mp
[*HUAWEI-mpls-ldp] mldp label-withdraw-delay 3