pim ipv6 hello-option override-interval

Format

pim ipv6 hello-option override-interval interval

undo pim ipv6 hello-option override-interval

Parameters

Parameter	Description	Value
interval	Specifies the interval carried in a Hello message sent by a PIM interface to override a prune action.	The value is an integer ranging from 1 to 65535, in milliseconds.

Parameter

Description

Value

interval

Specifies the interval carried in a Hello message sent by a PIM interface to override a prune action.

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

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

Hello messages sent by the Router carry lan-delay and override-interval parameters. lan-delay indicates the delay in sending Prune messages in a LAN. When the values of lan-delay on all Routers on the same link are different, the maximum value among these values is used after negotiation.

If one Router receives a Prune message from an upstream interface, it indicates that other downstream Routers still exist in the LAN. If the Router still needs to receive multicast data, it must send a Join message to the upstream interface to override the prune action within the set override-interval.

When receiving a Prune message from a downstream interface, the Router does not perform the prune action immediately until the PPT times out. The PPT equals the value of the lan-delay plus the override-interval. If the Router receives a Join message from its downstream device before the PPT expires, the Router cancels the prune action.

Prerequisites

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

Configuration Impact

If the pim ipv6 hello-option override-interval command or pim ipv6 silent command is run several times, the latest configuration overrides the previous one.

Example

# Set the interval carried in a Hello message sent by GE 0/1/0 to override a prune action to 2000 milliseconds.

<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 hello-option override-interval 2000