CLI Guide

isis priority
Set the priority of the designated router you select.
Syntax
isis priority value [level-1 | level-2]
To return to the default values, use the no isis priority [value] [level-1 | level-2] command.
Parameters
value This value sets the router priority. The higher the value, the higher the priority. The range
is from 0 to 127. The default is 64.
level-1 (OPTIONAL) Specify the priority for Level 1. This setting is the default.
level-2 (OPTIONAL) Specify the priority for Level 2.
Defaults value = 64; level-1 (if not otherwise specied).
Command Modes INTERFACE
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
You can congure priorities independently for Level 1 and Level 2. Priorities determine which router on a LAN is the
designated router. Priorities are advertised within hellos. The router with the highest priority becomes the
designated intermediate system (DIS).
NOTE: Routers with a priority of 0 cannot be a designated router.
Setting the priority to 0 lowers the chance of this system becoming the DIS, but does not prevent it. If all the
routers have priority 0, one with highest MAC address becomes DIS even though its priority is 0.
is-type
Congure IS-IS operating level for a router.
Syntax
is-type {level-1 | level-1-2 | level-2-only}
To return to the default values, use the no is-type command.
Parameters
level-1 Allows a router to act as a Level 1 router.
level-1-2 Allows a router to act as both a Level 1 and Level 2 router. This setting is the default.
level-2-only Allows a router to act as a Level 2 router.
Defaults level-1-2
Command Modes ROUTER ISIS
Supported Modes Full–Switch
Intermediate System to Intermediate System (IS-IS) 779