Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
 

Apply, Modify, or Add BGP Polices

Applying Policies

  1. BGP policies that have already been defined at a router can be applied as an in policy or as an out policy. Navigate to Network > Protocols > BGP > BGP Neighbors... function to bring up the BGP Neighbors window, from which a row can be selected. Double-click on a selected row or click on the Modify button to bring up the Modify BGP Neighbors window as shown in the following figure.
    Figure 1: Modify BGP NeighborsGUI for configuring BGP neighbor with fields for AS numbers 65100 and 65200, nodes TPE3640 and AS200, interface Ethernet2/0, neighbor IP 10.2.38.2, status up, address family vpn-wandl, and options for grouping, RR Client, Cluster ID, Multi Hop, Confederation ID, and Multipath. Includes tabs for In Policy and Out Policy and buttons for OK, Cancel, and Help.
  2. Select either the In Policy tab or the Out Policy tab to see the Available Policies at that node and the Applied Policies lists. Selected policies in the Available Policies list can be moved to the Applied Policies list by clicking on the Add-> button and, vice versa, selected policies in the Applied Policies list can be moved to the Available Policies list by clicking on the <-Remove button. The following figure shows an example of a BGP policy (setlocalpref) that has been moved to the router’s Applied Policies list.
    Figure 2: Applying an In PolicyGraphical user interface for configuring BGP neighbor policies, featuring tabs for Properties, In Policy, and Out Policy. Includes lists for Available and Applied Policies, buttons for adding or removing policies, and a Policy Editor option. Action buttons OK, Cancel, and Help are present.

In some cases, abbreviations are used to describe the policies, in the format Match Type: Match Name, where the Match types are interpreted as follows:

  • AC–Access List

  • AL–AS-path access list

  • CL–Community List

  • CL–Community List

  • PL–Prefix List

Modify BGP Policy

  1. To modify a BGP policy at the router, click on the Policy Editor... button to bring up the Routing Policy Editor window as shown in the following figure. Then select a particular policy from the left pane to display corresponding policy commands in the right pane.

  2. The + button expands a selection, while the - button collapses it. Dropdown menus and text fields allow you to modify the policy. The following figure shows an example of a BGP policy that is used to set the local-preference to a value of 80.

    Figure 3: Modifying a BGP PolicyRouting Policy Editor GUI labeled RTA showing selected policy setlocalpref with local-preference 80 in BGP configuration.

  3. To see the generated configlet for the BGP policy, click on the Configlet tab. The following figure shows the generated configlet corresponding to a BGP policy (setlocalpref).

    Figure 4: The Generated Configlet for a BGP PolicyGraphical user interface for Routing Policy Editor RTA showing selected policy setlocalpref with actions local-preference 80 and accept.

  4. The right-click menu or the Actions menu offers further options for modifying the routing policy. To add a new term to a policy, first select the policy. Then from the right pane, select New from either the Action menu or the right-click menu. Note in the following figure that after selecting New, a new item was added to the policy.

    Figure 5: Adding a term to a policyRouting Policy Editor GUI for configuring routing policies with lists of access, community, and prefix lists, and route maps. Route map 1401in with actions permit 10, permit 20, and deny 40. Context menu with options like New, Modify, and Delete. Buttons for Add, OK, Cancel, and Help.

  5. For route map policies, you can add commands underneath a particular term. Highlight the term, right-click, and select New... to open up the following dialog. Add “match” or “set” commands as shown in the following figure. Note that to deselect an item, simply click on a white space in the right pane.

    Figure 6: Adding a match command to a term of a route-mapRouting Policy Editor window labeled RTA displaying policies like community-list 1 and route-map 1401 in. New Policy dialog box open for adding a command to route-map 1401 in permit 20 with options to match as-path and enter match condition. OK and Cancel buttons at bottom.

Adding a BGP Policy

To add a new BGP policy, click on the Add... button in the lower left hand corner of the window to bring up the New Policy window (shown in the following figure), and proceed the same way as is done in modifying a BGP policy. Here you have a choice of five different types of policies: route-map, access-list, as-path access-list, community-list, and prefix-list. Note that the options may vary depending on the policy type.

Figure 7: New Policy WindowDialog box titled New Policy with dropdown menu for policy type selection policy-statement selected text field for policy name and OK Cancel buttons.