pim hello-option override-interval (Mtunnel view)

Function

The pim hello-option override-interval command sets the interval for overriding the prune action carried in a Hello message sent by a PIM interface.

The undo pim hello-option override-interval command restores the default setting.

By default, the interval for overriding the prune action carried in a Hello message sent by a PIM interface is 2500 milliseconds.

Format

pim hello-option override-interval interval

undo pim hello-option override-interval

Parameters

Parameter	Description	Value
interval	Specifies the interval for overriding the prune action carried in a Hello message sent by a PIM interface is 2500 milliseconds.	The value is an integer that ranges from 1 to 65535, in milliseconds

Parameter

Description

Value

interval

Specifies the interval for overriding the prune action carried in a Hello message sent by a PIM interface is 2500 milliseconds.

The value is an integer that ranges from 1 to 65535, in milliseconds

Views

MTI interface view, Mtunnel view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
pim	write

Usage Guidelines

Usage Scenario

Hello messages sent by routers carry lan-delay and override-interval. lan-delay indicates the delay for transmitting messages in the LAN. When the values of lan-delay on all routers on the same link are different, the maximum value of these values is used.

If a router receives a Prune message from the 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 in the override-interval period.

When receiving a Prune message from a downstream interface, the router does not perform the prune action immediately until the Prune-Pending Timer (PPT) times out. The PPT equals the value of the lan-delay plus the override-interval. If the router receives a Join message from the downstream interface in PPT, the router cancels the prune action.

Prerequisites

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

Configuration Impact

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

Example

# Set the interval for overriding the prune action carried in the Hello message sent by Mtunnel 10 to 2000 milliseconds.

<HUAWEI> system-view
[~HUAWEI] ip vpn-instance mytest
[*HUAWEI-vpn-instance-mytest] ipv4-family
[*HUAWEI-vpn-instance-mytest-af-ipv4] route-distinguisher 100:1
[*HUAWEI-vpn-instance-mytest-af-ipv4] multicast routing-enable
[*HUAWEI-vpn-instance-mytest-af-ipv4] multicast-domain share-group 224.1.1.1 binding mtunnel 10
[*HUAWEI-vpn-instance-mytest-af-ipv4] commit
[~HUAWEI-vpn-instance-mytest-af-ipv4] quit
[~HUAWEI-vpn-instance-mytest] quit
[~HUAWEI] interface Mtunnel 10
[~HUAWEI-MTunnel10] pim hello-option override-interval 2000