Dell 9.7(0.0) manual Graceful-restart grace-period seconds

Usage Information

VersionDescription

7.6.1.0Introduced on the S-Series.

7.5.1.0Introduced on the C-Series and E-Series.

In OSPF, flooding is the most resource-consuming task. The flooding algorithm, described in 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, Dell Networking OS 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 Dell Networking OS 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.

NOTE: This command enables OSPFv2 graceful restart globally by setting the grace period (in seconds) that an OSPFv2 router’s neighbors continues to advertise the router as adjacent during a graceful restart.

S6000

Syntax graceful-restart grace-period seconds

Parameters

Defaults

Command Modes

Command History

To disable the grace period, use the no graceful-restartgrace-periodcommand.

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.
Not Configured
ROUTER OSPF

This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide.

The following is a list of the Dell Networking OS version history for this command.

1078 Open Shortest Path First (OSPFv2 and OSPFv3)