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
- 
                                        To perform this procedure on a non-default VRF, you must first change the VRF instance. For information about how to use EDM for a non-default VRF, see Select and Launch a VRF Context View. All parameters might not be available in non-default VRFs. 
- The VRF must have an RP trigger of BGP. 
Procedure
- In the navigation pane, expand .
- Select Policy.
- Select the As Path List tab.
- Select Insert.
- Enter the appropriate information for your configuration.
- Select 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. | 




