mpls ldp timer hello-send

Function

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

The undo mpls ldp timer hello-send command restores the default setting.

By default, the value of a Hello send timer is one third the value of a 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 a Hello send timer.	The value is an integer ranging from 1 to 65535, in seconds.

Views

VLANIF interface view, GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-trunk interface view, remote MPLS LDP peer view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

An LSR sends Hello messages to the neighboring LSR to advertise its presence on the network and sets up the Hello adjacency. The Hello messages are sent at an interval specified by the Hello send timer.

The default value of the Hello send timer is recommended. On a network with poor performance, you can reduce the value of the Hello send timer, enabling the network to recover from faults as soon as possible.

Hello send timers are classified into the following types:

Link-Hello send timer: maintains the local adjacency. The mpls ldp timer hello-send command in the interface view sets a value of the timer.
Target-Hello send timer: maintains the remote adjacency. The mpls ldp timer hello-send command in the remote MPLS LDP peer view sets a value of the timer.

Prerequisites

The remote LDP peer has been configured or MPLS LDP has been enabled on the interface.

Precautions

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

Example

# Set the value of the link Hello send timer to 10 seconds.

<HUAWEI> system-view
[HUAWEI] interface vlanif 100
[HUAWEI-Vlanif100] mpls ldp
[HUAWEI-Vlanif100] mpls ldp timer hello-send 10

# Set the value of the link Hello send timer to 10 seconds.

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] mpls ldp
[HUAWEI-GigabitEthernet0/0/1] mpls ldp timer hello-send 10

# Set the value of the target Hello send timer to 20 seconds.

<HUAWEI> system-view
[HUAWEI] mpls ldp remote-peer bji
[HUAWEI-mpls-ldp-remote-bji] mpls ldp timer hello-send 20