graceful-restart ietf
Enable graceful restart on an IS-IS router.
Syntax
graceful-restart ietf
To return to the default, use the no graceful-restart ietf command.
Parameters
ietf Enter ietf to enable graceful restart on the IS-IS router.
Defaults Graceful restart disabled.
Command
Modes
ROUTER ISIS
Command
History
Version 9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
Every graceful restart enabled router’s HELLO PDUs includes a restart TLV. This
restart enables (re)starting as well as the existing ISIS peers to detect the GR
capability of the routers on the connected network. A flag in the Restart TLV
contains restart request (RR), restart acknowledge (RA) and suppress adjacency
advertisement (SA) bit flags.
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.
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
Version 9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
804
Intermediate System to Intermediate System (IS-IS)
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