Command Line Reference Guide
Parameters
value
This value sets the router priority. The higher the value, the higher the
priority. The range is 0 to 127. The default is 64.
level-1 (OPTIONAL) Specify the priority for Level 1. This 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
Version 9.0(1.3) Introduced on the S5000.
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.
S5000
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 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
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
The IS-IS protocol automatically determines area boundaries and are able to keep Level 1 and
Level 2 routing separate. Poorly planned use of this feature may cause configuration errors,
such as accidental area partitioning.
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