mpls ldp timer hello-send

Function

The mpls ldp timer hello-send command sets the value of the Hello send timer.

The undo mpls ldp timer hello-send command restores the default value of the Hello send timer.

By default, the value of the Hello send timer is one third of the value of the Hello hold timer.

Format

mpls ldp timer hello-send interval

undo mpls ldp timer hello-send

Parameters

Parameter	Description	Value
interval	Specifies the value of the Hello send timer.	The value is an integer ranging from 1 to 65535, in seconds.

Parameter

Description

Value

interval

Specifies the value of the Hello send timer.

The value is an integer ranging from 1 to 65535, in seconds.

Views

Remote MPLS LDP peer view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-ldp	write

Usage Guidelines

Usage Scenario

An LSR periodically sends Hello packets according to the Hello send timer value to the neighboring LSR to advertise its presence on the network and sets up a Hello adjacency.

The default timer value is recommended. On a network that is not in good situation, you can reduce the Hello send timer value properly. This enables the network to recover as soon as possible if a fault occurs.

There are two types of Hello send timers:

Link-Hello send timer: used to maintain the local adjacency. You can run the mpls ldp timer hello-send command in the interface view to set the timer value.
Target-Hello send timer: used to maintain the remote adjacency. You can run the mpls ldp timer hello-send command in the remote MPLS LDP peer view to set the timer value.
NOTE:
If the Hello send timer value is greater than one third of the Hello hold timer value, the Hello send timer value that takes effect is equal to one third of the Hello hold timer value.

Prerequisites

The remote LDP peer must be configured.

Configuration Impact

The Hello send timer value that takes effect is not necessarily the same as the set value. If the Hello send timer value is greater than one third of the Hello hold timer value, the Hello send timer value that takes effect is equal to one third of the link-Hello hold timer value.

Example

# Set the target-Hello send timer value to 60s.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls ldp
[*HUAWEI-mpls-ldp] quit
[*HUAWEI] mpls ldp remote-peer bji
[*HUAWEI-mpls-ldp-remote-bji] mpls ldp timer hello-send 60