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Home Documentation Junos OS Junos CLI Reference CLI Reference I

Junos CLI Reference

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Junos CLI Reference
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isis-instance

date_range 17-May-24
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Syntax

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isis-instance igpinstance-
name{ ... }

Hierarchy Level

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[edit logical-systems logical-system-name protocols],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols],
[edit protocols]

Description

Enable multiple IGP instances of IS-IS routing on the routing device.

The isis-instance statement is the one statement you must include in the configuration to run multiple IS-IS on the routing device.

Enabling IS-IS on an interface (by including the interface statement at the [edit protocols isis-instance igpinstance-name] hierarchy level), disabling it (by including the disable statement), and not actually having IS-IS run on an interface (by including the passive statement) are mutually exclusive states.

All the configuration options available under the [edit protocols isis-instance igpinstance-name] hierarchy level are similar to the options available under the [edit protocols isis] hierarchy level.

Note:

Junos OS does not support configuring the same logical interface in multiple IGP instances of IS-IS.

We do not support graceful restart for an IS-IS instance. Graceful restart is enabled by default. Therefore, you must explicitly disable graceful restart.

Default

IS-IS is disabled on the routing device.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 21.1R1.

Related Documentation

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