Administrator Guide

The default level is level-1.
For more information about this command, refer to Configuring the IS-IS Metric Style.
The following table describes the correct value range for the isis metric command.
Metric Sytle Correct Value Range
wide 0 to 16777215
narrow 0 to 63
wide transition 0 to 16777215
narrow transition 0 to 63
transition 0 to 63
To view the interface’s current metric, use the show config command in INTERFACE mode or the show
isis interface
command in EXEC Privilege mode.
Configuring the Distance of a Route
To configure the distance for a route, use the following command.
• Configure the distance for a route.
ROUTER ISIS mode
distance
Changing the IS-Type
To change the IS-type, use the following commands.
You can configure the system to act as a Level 1 router, a Level 1-2 router, or a Level 2 router.
To change the IS-type for the router, use the following commands.
• Configure IS-IS operating level for a router.
ROUTER ISIS mode
is-type {level-1 | level-1-2 | level-2-only}
Default is level-1-2.
• Change the IS-type for the IS-IS process.
ROUTER ISIS mode
is-type {level-1 | level-1-2 | level-2}
Example of the show isis database Command to View Level 1-2 Link State Databases
To view which IS-type is configured, use the show isis protocol command in EXEC Privilege mode.
The show config command in ROUTER ISIS mode displays only non-default information. If you do not
change the IS-type, the default value (level-1-2) is not displayed.
The default is Level 1-2 router. When the IS-type is Level 1-2, the software maintains two Link State
databases, one for each level. To view the Link State databases, use the show isis database
command.
412
Intermediate System to Intermediate System