Users Guide

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-specic. 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
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
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
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 conguration errors, such as accidental area
partitioning.
If you are conguring only one area in your network, you do not need to run both Level 1 and Level 2 routing
algorithms. You can congure the IS type as Level 1.
log-adjacency-changes
Generate a log messages for adjacency state changes.
Syntax
log-adjacency-changes
To disable this function, use the no log-adjacency-changes command.
Defaults Adjacency changes are not logged.
Command Modes ROUTER ISIS
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
854
Intermediate System to Intermediate System (IS-IS)