Graceful-Restart Grace-Period - Dell Force10 Z9000 Reference Manual

Command History
Version 8.3.11.1
Version 8.3.7.0
Version 7.8.1.0
Version 7.6.1.0
Version 7.5.1.0
Usage
In OSPF, flooding is the most resource-consuming task. The flooding algorithm, described in
Information
RFC-2328, requires that OSPF flood LSAs (Link State Advertisements) on all interfaces, as
governed by LSA's flooding scope (see Section 13 of the RFC). When multiple direct links
connect two routers, the RFC-2328 flooding algorithm generates significant redundant
information across all links.
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 will continue to advertise the router as fully adjacent
regardless of the synchronization state during a graceful restart.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax graceful-restart grace-period seconds
To disable the grace period, use the no graceful-restart grace-period
command.
Parameters
seconds
Defaults Not Configured
Command Modes ROUTER OSPF
Command History
Version 8.3.11.1
Version 8.3.7.0
Version 7.8.1.0
Version 7.5.1.0
pre-Version
6.1.1.1
1052
Introduced on the Z9000.
Introduced on the S4810.
Added support for Multi-Process OSPF.
Introduced on the S-Series.
Introduced on the C-Series and E-Series.
Time duration, in seconds, that specifies the duration of the restart
process before OSPF terminates the process. The range is 40 to 1800
seconds.
Introduced on the Z9000.
Introduced on the S4810.
Introduced on the S-Series. Added support for Multi-Process OSPF.
Introduced on the C-Series.
Introduced on the E-Series.