Creating a Manual-TE path

To create a Manual-TE path, you must specify the links which the path traverses from the CPE device at the start of the segment to the CPE device at the end of the segment. Two types of such paths are supported:

• Fully defined paths that identify each device and interface from the beginning to the end of the segment. In this case, you must specify each link traversed by the path.
• Hybrid paths in which you can specify one or more intermediate devices and, if necessary, interfaces. In this case, traffic is automatically transmitted between network nodes that are not manually specified (the Auto-SPF path is used).

You can use constraints to add Manual-TE paths to transport services.

Examples of possible Manual-TE paths: In the above examples, the abbreviation Sw (switch) stands for CPE devices. The interface number is indicated after the device number, separated by a colon. Fully defined path: Sw1:3 → Sw2:1, Sw2:2 → Sw4:1, Sw4:5 → SwN:2. Hybrid path: Sw1 → Sw5, Sw5:3 → Sw4:3, Sw4 → SwN. In this case, the path from Sw1 to SwN is constructed as the Auto-SPF path between Sw1 and Sw5, the Sw5:3 → Sw4:3 link, and the Auto-SPF path between Sw4 and SwN.

To create a Manual-TE path:

1. In the menu, go to the Infrastructure section.

   The SD-WAN infrastructure management page is displayed. By default, the Network resources tab is selected, which displays the table of SD-WAN Controllers.

2. Click Management next to the SD-WAN Controller and in the drop-down list, select Configuration menu.

   This opens the SD-WAN Controller configuration menu. By default, you are taken to the Controller nodes section, which displays a table of Controller nodes.

3. Go to the Segments section.

   A table of segments is displayed.

4. Click Management next to the segment and in the drop-down list, select Edit.

   This opens a window with path settings and a table of paths.

5. Click + Manual-TE path.

   This opens a window with the Manual-TE path settings and a table of hops.

6. In the Name field, enter the name of the Manual-TE path.
7. In the Maximum number of hops field, enter the maximum number of hops in the path. Range of values: 1 to 8. The default setting is 4.
8. In the From drop-down list on the left, select the starting CPE device for the hop.

   If no hops are created in the path, only the first device of the segment can be selected as the starting CPE device.

   If at least one hop is created in the path, only the final device of the last hop can be selected as the starting CPE device.

9. If necessary, in the Port drop-down list on the left, select the network-to-network interface (NNI) of the starting CPE device for the hop. The default setting is AUTO and the interface is detected automatically.
10. In the To drop-down list on the right, select the CPE device at the end of the hop.

    When the starting CPE device of a hop is set to AUTO in the Port drop-down list, you can select any device in the domain as the final device except those that are already being used in other hops. For the final hop, the AUTO value is automatically selected in the Port drop-down list. Thus, the hop uses an Auto-SPF path.

    If an NNI is selected for the starting CPE device for a hop in the Port drop-down list, only the device to which a link has been constructed from the NNI can be selected as the final device. For the final device of the hop, the NNI to which the path is constructed is automatically selected in the Port drop-down list. Thus, the hop uses the link specified between the two devices.

11. If necessary, in the Port drop-down list on the right, select the network-to-network interface (NNI) of the CPE device at the end of the hop. The default setting is AUTO and the interface is detected automatically.
12. Click Add to add a hop to the Manual-TE path.

    The hop is created and displayed in the table. The Segments column displays the cost of the hop, which is the sum of the cost of all links added to it. You can add multiple hops if the maximum number of hops in the path is not reached.

13. Click Create.

A check is performed to see that the final device of the last hop matches the final device of the segment in which you are creating the Manual-TE path. If the check is successful, the Manual-TE path is created and added to the table, and the Cost column displays the cost of the path, which is the sum of the cost of all hops added to it.

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