timer hello (IPv6)

Function

The timer hello command globally sets an interval at which IPv6 PIM interfaces send Hello messages.

The undo pim timer hello command restores the default value.

By default, IPv6 PIM interfaces send Hello messages at an interval of 30 seconds.

Format

timer hello helloInterval

undo timer hello

Parameters

Parameter	Description	Value
helloInterval	Specifies the interval at which IPv6 PIM interfaces send Hello messages.	The value is an integer ranging from 1 to 18000, in seconds.

Parameter

Description

Value

helloInterval

Specifies the interval at which IPv6 PIM interfaces send Hello messages.

The value is an integer ranging from 1 to 18000, in seconds.

Views

IPv6 PIM view, VPN instance IPv6 PIM view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
pim	write

Usage Guidelines

Usage Scenario

A Router on an IPv6 PIM-SM network needs to send Hello messages periodically to maintain PIM neighbor relationships. To set the interval at which IPv6 PIM interfaces send Hello messages, run the timer hello command. To have a Router rapidly sense IPv6 PIM neighbor changes, set a Hello packet sending interval smaller than the configured neighbor timeout period.

Prerequisites

The multicast routing function has been enabled using the multicast ipv6 routing-enable command in the public network instance view.

Configuration Impact

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

Example

# In the public network instance, specify 40 seconds as the interval at which IPv6 PIM interfaces send Hello messages.

<HUAWEI> system-view
[~HUAWEI] multicast ipv6 routing-enable
[*HUAWEI] pim-ipv6
[*HUAWEI-pim6] timer hello 40