Configure an AS Path List

Configure an AS path list to restrict the routing information a router learns or advertises to and from a neighbor. The AS path list acts as a filter that matches AS paths.

Before you begin

  • Change the VRF instance as required to configure BGP on a specific VRF instance. The VRF must have an RP trigger of BGP. Not all parameters are configurable on non-default VRFs.

Procedure

  1. In the navigation pane, expand Configuration > IP.
  2. Click Policy.
  3. Click the As Path List tab.
  4. Click Insert.
  5. Enter the appropriate information for your configuration.
  6. Click Insert.

As Path List field descriptions

Use the data in the following table to use the As Path List tab.

Name

Description

Id

Specifies the AS path list.

MemberId

Specifies the AS path access list member ID.

Mode

Specifies the action to take if the system selects a policy for a specific route. Select permit (allow the route) or deny (ignore the route).

AsRegularExpression

Specifies the expression to use for the AS path.