Administrator Guide

Version Description
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
To protect your network from unauthorized access, use this command to prevent unauthorized routers
from forming adjacencies.
You can assign different passwords for different routing levels by using the keywords level-1 and
level-2.
The no form of this command disables the password for Level 1 or Level 2 routing, using the respective
keywords level-1 or level-2.
This password provides limited security as it is processed as plain text.
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 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
9.7(0.0) Introduced on the S6000-ON.
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.
Intermediate System to Intermediate System (IS-IS) 691