Administrator Guide

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 specified).
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OSCommand Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
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.
Usage Information
You can configure 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
Configure IS-IS operating level for a router.
C9000 Series
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
Command History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
806 Intermediate System to Intermediate System (IS-IS)