System information

Configuring IS-IS
10-15
A router’s priority for becoming the designated router is indicated by an arbitrary
number. Routers with a higher value are more likely to become the designated router.
By default, routers have a priority value of 64.
Use the isis priority command to select the designated router priority in Interface
Configuration mode, as shown below:
MOT(config-if)#isis priority <n> {level-1 | level-2}
n is a number from 0 to 127 that gives a priority value to the designated router.
level-1 indicates a Level 1 IS-IS router.
level-2 indicates a Level 2 IS-IS router.
Assigning a Password to an IS-IS Interface
You can assign different passwords for the different IS-IS routing levels. Specifying
Level 1 or Level 2 configures the password for only Level 1 or Level 2 routing,
respectively. By default, authentication is disabled.
Use the isis password command in Interface Configuration mode to configure the
authentication password for the specified interface, perform the following task in
interface configuration mode:
MOT(config-if)#isis password <password> {level-1 | level-2}
where:
password is the unencrypted text password that is 1-8 characters in length.
level-1 indicates a Level 1 IS-IS router.
level-2 indicates a Level 2 IS-IS router.
Note: Priorities can be configured for Level 1 and Level 2 individually.