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Command Modes ROUTER ISIS
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
The domain password is inserted in Level 2 link state PDUs (LSPs), complete sequence number PDUs
(CSNPs), and partial sequence number PDUs (PSNPs).
Related
Commands
● area-password — configures an IS-IS area authentication password.
● isis priority — configures the authentication password for an interface.
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
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
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
Supported Modes Full–Switch
Intermediate System to Intermediate System (IS-IS) 691