graceful-restart period (IPv6)

Function

The graceful-restart period command configures the minimum PIM GR period.

The undo graceful-restart period command restores the default minimum PIM GR period.

By default, the minimum PIM GR period is 120 seconds.

Format

graceful-restart period period

undo graceful-restart period

Parameters

Parameter	Description	Value
period	Specifies the minimum PIM GR period.	The value is an integer that ranges from 90 to 3600 in seconds.

Views

PIM-IPv6 view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The graceful-restart period command ensures the minimum time for maintaining forwarding entries.

Prerequisites

IPv6 multicast routing has been enabled globally using the multicast ipv6 routing-enable command in the system view.

Precautions

Unicast protocol GR forms the basis of PIM GR; therefore, the minimum PIM GR period should be longer than the corresponding unicast protocol GR period.

The PIM GR period also depends on the complexity of the network topology and increases with the expansion of unicast route capacity and multicast route capacity.

Example

# Set the minimum PIM GR period in the PIM-IPv6 view to 150 seconds.

<HUAWEI> system-view
[HUAWEI] multicast ipv6 routing-enable
[HUAWEI] pim-ipv6
[HUAWEI-pim6] graceful-restart
[HUAWEI-pim6] graceful-restart period 150