Dell C9000 series, Reference Manual

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The ISIS graceful restart-enabled router can co-exist in mixed topologies where some
routers are graceful restart-enabled and others are not. For neighbors that are not
graceful restart-enabled, the restarting router brings up the adjacency per the usual
methods.
graceful-restart interval
Set the graceful restart grace period, the time during that all graceful restart attempts are prevented.
C9000 Series
Syntax
graceful-restart interval minutes
To return to the default, use the
no graceful-restart interval
command.
Parameters
minutes Enter the graceful-restart interval minutes. The range is from 1
to 20 minutes. The default is
5 minutes .
Defaults 5 minutes
Command Modes ROUTER ISIS
Command History 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.
Version Description
9.9(0.0) Introduced on the C9010.
9.5(0.1) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.3.11.1 Introduced on the Z9000.
8.3.1.0 Introduced on the E-Series.
Intermediate System to Intermediate System (IS-IS) 1065