Reference Guide
By default, FTOS implements an enhanced flooding procedure that dynamically and 
intelligently determines when to optimize flooding. Whenever possible, the OSPF task attempts 
to reduce flooding overhead by selectively flooding on a subset of the interfaces between two 
routers.
When you enable flood-2328, this command configures FTOS to flood LSAs on all 
interfaces.
graceful-restart grace-period
Specifies the time duration, in seconds, that the router’s neighbors continue to advertise the router as fully adjacent 
regardless of the synchronization state during a graceful restart.
S4820T
Syntax
graceful-restart grace-period seconds
To disable the grace period, use the no graceful-restart grace-period 
command.
Parameters
seconds
Time duration, in seconds, that specifies the duration of the restart 
process before OSPF terminates the process. The range is from 40 to 
1800 seconds.
Defaults Not Configured
Command Modes ROUTER OSPF
Command History
This guide is platform-specific. For command information about other platforms, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.8.1.0 Introduced on the S-Series. Added support for Multi-Process OSPF.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.1.1.1
Introduced on the E-Series.
graceful-restart helper-reject
Specify the OSPF router to not act as a helper during graceful restart.
S4820T
Syntax
graceful-restart helper-reject ip-address
To return to default value, use the no graceful-restart helper-reject command.
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