Creating a Manual-TE path

When creating a Manual-TE path, you must manually specify the links that the path passes through on the way from the segment source CPE device to the segment destination CPE device. Two types of Manual-TE paths are supported:

• A fully defined Manual-TE path specifies each CPE device and service interface through which the Manual-TE path passes.
• A hybrid Manual-TE path specifies one or more CPE devices and service interfaces through which the Manual-TE path passes. In this case, traffic between sections of the Manual-TE path that are not manually specified is transmitted automatically (an Auto-SPF path is used).

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

Examples of possible Manual-TE paths: In the examples, an OpenFlow port number is specified after the CPE device number, separated by a colon. Fully defined Manual-TE path: CPE 1:3 → CPE 2:1, CPE 2:2 → CPE 4:1, CPE 4:5 → CPE N:2. Hybrid Manual-TE path: CPE 1 → CPE 5, CPE 5:3 → CPE 4:3, CPE 4 → CPE N. In this case, the path from CPE 1 to CPE N is built as an Auto-SPF path CPE 1 → CPE 5, a Manual-TE path CPE 5:3 → CPE 4:3, and an Auto-SPF path CPE 4 → CPE N.

To create a Manual-TE path:

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

   This opens the resource management page. By default, the Network resources tab is selected, which displays the table of controllers.

2. Click Management → Configuration menu next to the controller.

   This opens the 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 → Edit next to the segment in which you want to create a Manual-TE path.

   The settings and the path table are displayed.

5. Click + Manual-TE path.

   The Manual-TE path settings and the hop table are displayed.

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 Manual-TE path. Range of values: 1 to 8. Default value: 4.
8. Add the hop to the Manual-TE path:
   1. In the From drop-down list on the left, select the source CPE device for the hop.

      If you are adding the first hop to the Manual-TE path, you can select only the CPE device of the segment source as the source CPE device of the hop. If you have added at least one hop to the Manual-TE path, you can only select the destination CPE device of the previous hop as the source CPE device of the current hop.

   2. If necessary, in the Port drop-down list on the left, select the OpenFlow port of the hop source. Default value: Automatically means the OpenFlow port is determined automatically.
   3. In the To drop-down list on the right, select the CPE device at the end of the hop.

      If in the Port drop-down list you selected Automatically as the hop source CPE device, you can select any CPE device that is not being used in other hops as the hop destination. In this case, in the Port drop-down list, Automatically is selected for the hop destination CPE device, and the OpenFlow port is detected automatically. Thus, the hop uses an Auto-SPF path.

      If in the Port drop-down list, you selected an OpenFlow port for the hop source CPE device, for the hop destination CPE device, you can only use a CPE device that has a link built from that OpenFlow port. In this case, in the Port drop-down list, the OpenFlow port to which the link is built is automatically selected as the hop destination CPE device. Thus, the hop uses the link specified between the two CPE devices.

   4. If necessary, in the Port drop-down list on the right, select the OpenFlow port of the hop destination CPE device. Default value: Automatically means the OpenFlow port is determined automatically.
   5. Click Add.

      The hop is created and displayed in the table. You can add multiple hops or delete a hop. To delete a hop click Delete next to it.

9. Click Create.

   A check is performed to make sure the destination CPE device of the last hop matches the destination CPE 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 displayed in the table, and the column Cost displays the cost of the Manual-TE path, which is the sum total of the cost of all hops that you added to this Manual-TE path.

10. Click Save to save the settings of the segment.

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