Users Guide

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 specied 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 satised.
Defaults Not congured.
Command Modes
• ROUTER ISIS (for IPv4)
• CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
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
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
conguration. 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 — congures a metric for an interface.
• metric-style — sets the metric style for the router.
• show isis database — displays the IS-IS link state database.
description
Enter a description of the IS-IS routing protocol.
Syntax
description {description}
Intermediate System to Intermediate System (IS-IS) 773