enable isis

enable isis {area area_name}


This command enables the specified IS-IS router process on the current virtual router.

Syntax Description

area_name Specifies the name of the IS-IS router process to be enabled.



Usage Guidelines

If no area name is specified, all IS-IS router processes on the current virtual router are enabled. Once a router process is enabled, IS-IS PDUs are sent and processed provided that the following conditions are met:
  • The router process has a system ID and area address configured.

  • At least one associated VLAN (Virtual LAN) interface has IPv4 or IPv6 forwarding enabled.

This command has no effect on router processes that are already enabled.


The following command enables the IS-IS process named areax:

enable isis area areax


This command was first available in ExtremeXOS 12.1.

Platform Availability

This command is available on platforms with a Core license.