Applying IPv4 IS-IS accept policies globally

Apply IS-IS accept policies globally. Use IS-IS accept policies to filter incoming IS-IS routes the device receives over the SPBM cloud. Accept policies apply to incoming traffic and determine whether to add the route to the routing table.

After you apply the IS-IS accept filters, the device removes and re-adds all routes with updated filters.

IS-IS accept policies are disabled by default.

Note

Note

  • After you apply IS-IS accept policies globally the application can disrupt traffic and cause temporary traffic loss. After you configure the IS-IS accept policies value to Apply, the device reapplies the accept policies, which deletes all of the IS-IS routes, and adds the IS-IS routes again. You should make all the relevant accept policy changes, and then apply IS-IS accept policies globally at the end.

  • If the route policy changes, you must reapply the IS-IS accept policy, unless it was the last sequence in the configuration.

Before you begin

  • Enable IS-IS globally.

  • Ensure the manual area exists.

  • Ensure the IP IS-IS filter exists.

Procedure

  1. In the navigation pane, expand Configuration > IP.
  2. Click IS-IS.
  3. Click the Accept Global tab.
  4. Select a name from the list or enter name in the DefaultPolicyName field, to specify the route policy name for the default filter.
  5. Select Apply to apply the default policy.

Accept Global field descriptions

Use the data in the following table to configure the Accept Global tab.

Name

Description

DefaultPolicyName

Specifies the route policy name for the default filter.

DefaultBackbonePolicyName

Specifies the backbone host route policy name for the default filter.

Apply

Applies the default policy when you configure the field to apply. The device only activates the default policy if the route map (the default policy name) has a value. If you do not select apply, the device takes no action. The GRT always returns no action.
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