graceful-restart (OSPFv3)

Function

The graceful-restart command enables GR of the OSPFv3 process.

The undo graceful-restart command disables GR of the OSPFv3 process.

By default, OSPFv3 GR is not enabled.

Format

graceful-restart [ period period | ack-time time | retransmit-interval interval | lsa-checking-ignore | planned-only ] ^*

undo graceful-restart [ period [ period ] | ack-time [ time ] | retransmit-interval [ interval ] | lsa-checking-ignore | planned-only ] ^*

Parameters

Parameter	Description	Value
period period	Specifies the GR period.	The value is an integer ranging from 1 to 1800, expressed in seconds. By default, the value is 120 seconds.
ack-time time	Specifies the period during which a switch waits for the Grace-LSA Ack message from its neighbor.	The value is an integer ranging from 1 to 30, expressed in seconds. By default, the value is 15 seconds.
retransmit-interval interval	Specifies the interval for retransmitting Grace-LSAs.	The value is an integer ranging from 1 to 5, expressed in seconds. By default, the value is 5 seconds.
lsa-checking-ignore	Indicates that strict check is not performed on LSAs. By default, switches perform strict check on received LSAs.	-
planned-only	Indicates that switches support Planned-GR only. By default, switches support Planned-GR and Unplanned-GR.	-

Views

OSPFv3 view

Default Level

2: Configuration level

Usage Guidelines

ack-time is an optional parameter. After the parameter is specified, the restarter can discover more neighbors in ack-time period.

Example

# Enable GR of the OSPFv3 process.

<HUAWEI> system-view

[HUAWEI] ospfv3 1

[HUAWEI-ospfv3-1] graceful-restart