hello-option holdtime

Function

The hello-option holdtime command sets the neighbor timeout period carried in PIM Hello packets to be sent by a router.

The undo hello-option holdtime command restores the default configuration.

By default, the neighbor timeout period carried in PIM Hello packets to be sent by a router is 105s.

Format

hello-option holdtime holdtimeValue

undo hello-option holdtime

Parameters

Parameter	Description	Value
holdtimeValue	Specifies the neighbor timeout period carried in PIM Hello messages to be sent.	The value is an integer ranging from 1 to 65535, in seconds.

Parameter

Description

Value

holdtimeValue

Specifies the neighbor timeout period carried in PIM Hello messages to be sent.

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

Views

VPN instance PIM view, PIM view of a public network instance

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
pim	write

Usage Guidelines

Usage Scenario

You can run this command to set the neighbor timeout period carried in PIM Hello packets to be sent by a router. If the receive end does not receive any Hello packet from the local device within the timeout period, the receive end considers that the local neighbor is aged. If routers need to quickly detect PIM neighbor changes, set this parameter to a smaller value, but the value must be greater than the configured interval for sending Hello messages.

Prerequisites

The multicast routing function has been enabled using the multicast routing-enable command in the public network instance view or VPN instance view.

Configuration Impact

If the hello-option holdtime command is run more than once, the latest configuration overrides the previous one.

Example

# In the public network instance, set the neighbor timeout period carried in PIM Hello packets to be sent by the router to 120 seconds.

<HUAWEI> system-view
[~HUAWEI] multicast routing-enable
[*HUAWEI] pim
[*HUAWEI-pim] hello-option holdtime 120