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apply isis
Function
The apply isis command sets the action for changing the level of routes imported to IS-IS in a routing policy.
The undo apply isis command restores the default setting.
By default, the action for changing the level of routes imported to IS-IS is not set in a routing policy.
Parameters
| Parameter | Description | Value |
|---|---|---|
| level-1 | Indicates IS-IS Level-1 routes. | - |
| level-1-2 | Indicates IS-IS Level-1 and Level-2 routes. | - |
| level-2 | Indicates IS-IS Level-2 routes. | - |
Usage Guidelines
Usage Scenario
A large number of external routes can be imported to IS-IS, which causes extra burdens on IS-IS-enabled devices. To solve this problem, run the apply isis command to set the level of the routes to be imported to IS-IS.
Prerequisites
The apply isis command can be used only after the route-policy command is used.
Precautions
When a routing policy takes effect, it affects route receiving and advertising in IS-IS.
