default-information originate
Generates a default route into an IS-IS routing domain and controls the distribution of default
information.
Syntax
default-information originate [always] [metric metric] [route-
map map-name]
To disable the generation of a default route into the specified IS-IS routing domain,
use the no default-information originate [always] [metric metric]
[route-map map-name] command.
Parameters
always (OPTIONAL) Enter the keyword always to have the default
route always advertised.
metric metric (OPTIONAL) Enter the keyword metric then a number to
assign to the route. The range is from 0 to 16777215.
route-map
map-name
(OPTIONAL) A default route the routing process generates if
the route map is satisfied.
Defaults Not configured.
Command
Modes
• ROUTER ISIS (for IPv4)
• CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command
History
Version 9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
When you use this command to redistribute routes into a routing domain, the
router becomes an autonomous system (AS) boundary router. An AS boundary
router does not always generate a default route into a routing domain. The router
still requires its own default route before it can generate one.
How a metric value assigned to a default route advertises depends on the metric-
style command configuration. If the metric-style command is set for Narrow
mode and the metric value in the default-information originate command
is set to a number higher than 63, the metric value advertised in the LSPs is 63. If
the
metric-style command is set for Wide mode, the metric value in the
default-information originate command is advertised.
Related
Commands
• redistribute — redistributes routes from one routing domain to another routing
domain.
• isis metric — configures a metric for an interface.
• metric-style — sets the metric style for the router.
• show isis database — displays the IS-IS link state database.
Intermediate System to Intermediate System (IS-IS)
799
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