Administrator Guide

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.
description
Enter a description of the IS-IS routing protocol.
C9000 Series
Syntax
description {description}
To remove the description, use the no description {description} command.
Parameters
description Enter a description to identify the IS-IS protocol (80 characters maximum).
Defaults none
Command Modes ROUTER ISIS
Command History
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.
pre-7.7.1.0 Introduced.
Related
Commands
router isis — Enter ROUTER mode on the switch.
distance
Define the administrative distance for learned routes.
C9000 Series
Syntax
distance weight [ip-address mask [prefix-list]]
To return to the default values, use the no distance weight command.
Parameters
weight The administrative distance value indicates the reliability of a routing information source.
The range is from 1 to 255. (A higher relative value indicates lower reliability. Routes with
smaller values are given preference.) The default is 115.
Intermediate System to Intermediate System (IS-IS) 787