Dell 9.7(0.0) manual Is-type level-1 level-1-2 level-2-only

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.

Syntax

Parameters

Defaults

Command Modes

Command History

is-type {level-1 level-1-2 level-2-only}

To return to the default values, use the no is-typecommand.

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.
level-1-2
ROUTER ISIS

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.

Usage Information

VersionDescription

9.7(0.0) Introduced on the S6000-ON.

9.0.2.0Introduced on the S6000.

8.3.19.0Introduced on the S4820T.

8.3.12.0Introduced on the S4810.

8.3.11.1Introduced on the Z9000.

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.

If you are configuring only one area in your network, you do not need to run both Level 1 and Level 2 routing algorithms. You can configure the IS type as Level 1.

Intermediate System to Intermediate System (IS-IS) 877