pim ipv6 timer hello

Function

The pim ipv6 timer hello command sets an interval at which an IPv6 PIM interface sends Hello messages.

The undo pim ipv6 timer hello command restores the default setting.

By default, an IPv6 PIM interface sends Hello messages at an interval of 30 seconds.

Format

pim ipv6 timer hello interval

undo pim ipv6 timer hello

Parameters

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

Parameter

Description

Value

interval

Specifies the interval at which an IPv6 PIM interface sends Hello messages.

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

Views

100ge sub-interface view, 100GE interface view, 10GE sub-interface view, 10GE interface view, 200GE sub-interface view, 25GE sub-interface view, 25GE interface view, 400GE sub-interface view, 400GE interface view, 40GE sub-interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, FlexE interface view, GE optical interface view, GE sub-interface view, GE interface view, GE electrical interface view, Global VE sub-interface view, Loopback interface view, PW-VE sub-interface view, VE sub-interface view, VLANIF interface view, Virtual template view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
pim	write

Usage Guidelines

Usage Scenario

A router on a PIM-SM network needs to send Hello messages periodically to maintain PIM neighbor relationships. To set the interval at which an interface sends Hello messages, run the pim ipv6 timer hello command. To have a router rapidly sense PIM neighbor changes, set a Hello packet sending interval smaller than the neighbor timeout period configured using the hello-option holdtime or pim ipv6 hello-option holdtime command.

Set a proper interval value in the pim ipv6 timer hello command based on the configuration of the hello-option holdtime or pim ipv6 hello-option holdtime command configured on PIM neighbors.

Prerequisites

The multicast ipv6 routing-enable command is run in the public network instance view.

Configuration Impact

If the pim ipv6 timer hello command is run more than once, the latest configuration overrides the previous one.

Example

# Specify 40 seconds as the interval at which GE0/1/0 sends Hello messages.

<HUAWEI> system-view
[~HUAWEI] multicast ipv6 routing-enable
[*HUAWEI] interface GigabitEthernet 0/1/0
[*HUAWEI-GigabitEthernet0/1/0] ipv6 enable
[*HUAWEI-GigabitEthernet0/1/0] pim ipv6 timer hello 40