Configuring paths

You can configure paths in a segment, CPE template or on the CPE device. Path settings specified in a segment or a CPE template are automatically propagated to all CPE devices that belong to this segment or use this CPE template. Path settings specified on a CPE device are automatically propagated to all CPE devices that belong to the same segment as that CPE device.

To configure paths:

1. Configure paths in one of the following ways:
   • If you want to configure paths in a segment, go to the Infrastructure section, click Management →Configuration menu next to the controller, go to the Segments section, and click Management → Edit next to the segment.
   • If you want to configure paths in a CPE template, go to the SD-WAN → CPE templates menu section, click the CPE template, and select the Multipathing tab.
   • If you want to configure paths on a CPE device, go to the SD-WAN → CPE menu section, click the CPE device, and select the Multipathing tab.

   Path settings are displayed.

2. In the Maximum number of paths field, enter the maximum number of paths supported by the CPE device or segment. Range of values: 1 to 16. Default value: 8.
3. In the Maximum of Auto-SPF field, enter the maximum number of Auto-SPF paths supported by the CPE device or segment. Auto SPF paths are automatically calculated by the controller. Range of values: 1 to 8. Default value: 2.

   If you want traffic to be transmitted between CPE devices in Active/Active mode, enter a value greater than 1 in this field. If you want traffic to be transmitted between CPE devices in Active/Standby mode, enter 1 in this field.

4. In the Cost variance multiplier field, enter the maximum ratio of the cost of this path to the lowest cost of any path on your SD-WAN network; if the cost of the path is below this limit, the path can be added to the segment. Range of values: 1.0 to 10.0. Default value: 10. You cannot enter a value in this field if the Multi-weight balancing check box is selected.

   For example, if you enter 2 in this field, and the lowest path cost in your SD-WAN network is 10,000, paths with a cost of up to 20,000 can be added to the segment. In Active /Standby mode, the value in this field determines which Auto-SPF path is used if the previous Auto-SPF path becomes unavailable.

5. If you want paths to be added to the segment regardless of their cost, select the Multi-weight balancing check box. This check box is cleared by default.
6. Save the path settings in one of the following ways:
   • If you have configured paths in the segment, click Save to save the segment settings.
   • If you have configured paths in a CPE template or on a CPE device, in the upper part of the settings area, click Save to save the settings of the CPE template or CPE device.

Path settings are saved.