Creating an SD-WAN interface

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You can create an SD-WAN interface on an individual CPE device or on all devices that use the CPE template. SD-WAN interfaces are created on top of network interfaces, so you must first create a network interface.

To create an SD-WAN interface, use the following instructions:

• Creating an SD-WAN interface on an individual CPE device.

  To create an SD-WAN interface on an individual CPE device:

  1. In the menu, go to the SD-WAN section.

     By default, the CPE subsection is displayed with a table of CPE devices.

  2. Click the CPE device.

     The settings area is displayed in the lower part of the page. You can expand the settings area to fill the entire page by clicking the expand button .

  3. Select the SD-WAN settings → Interfaces tab.

     A table of SD-WAN interfaces is displayed.

  4. Click + SD-WAN interface.
  5. This opens a window; in that window, in the OpenFlow interface field, enter the number of the OpenFlow interface that must be created on the virtual switch of the CPE device.
  6. In the Interface (alias) field, enter the alias of the network interface to which you want to bind the OpenFlow interface.
  7. In the Maximum rate field, enter the maximum speed of the SD-WAN interface in Mbps. Range of values: 1 to 100 000. The default setting is 1000.
  8. Specify the host whose availability determines the availability of the SD-WAN interface:
     1. In the IP for tracking field, enter the IP address of the host.
     2. Click + Add.

     You can specify multiple hosts.

  9. In the Reliability field, enter the number of hosts that must remain available for the SD-WAN interface to be considered available. The default setting is 1.

     Make sure that the number of hosts does not exceed the number of IP addresses in the IP for tracking field. Otherwise, the SD-WAN interface will always be considered unavailable.

  10. In the Interval field, enter the SD-WAN interface testing interval in seconds. Range of values: 1 to 600. The default setting is 2.
  11. In the Count field, enter the number of availability checks for each of the specified hosts as part of a single SD-WAN interface test. Range of values: 1 to 600. The default setting is 2.
  12. In the Timeout field, enter the time in milliseconds for the SD-WAN interface to wait for an echo response from the hosts after sending an echo request. Range of values: 1 to 100 000. The default setting is 2000.
  13. In the Down field, enter the interval in seconds for testing the SD-WAN interface if it becomes unavailable. Range of values: 1 to 600. The default setting is 3.
  14. In the Up field, enter the interval in seconds for testing the SD-WAN interface if it becomes available again. Range of values: 1 to 600. The default setting is 2.
  15. In the Speed monitoring drop-down list, select whether to check the speed limit of the SD-WAN interface imposed by the mobile operator:
      • Yes
      • No (selected by default)
  16. If necessary, configure traffic queues on the SD-WAN interface:
      1. Select the QoS tab.

         A table of traffic queues is displayed.

      2. In the Remap ToS column, select the Type of Service value of external headers of traffic packets for each queue. You cannot select these values when configuring traffic queues for the LAN interface.
      3. In the Minimum Speed, % column, specify the minimum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface. The sum total in a column may not exceed 100.
      4. In the Maximum Speed, % column, specify the maximum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface. This setting is used to prevent traffic of high-priority queues from indefinitely preempting traffic of low-priority queues.

      The maximum speed of the interface is specified when configuring the connection of the CPE device to the SD-WAN network on the General settings tab in the Maximum rate field.

  17. If necessary, configure the sending of interface information to the SD-WAN Controller:
      1. Select the NAT and Disjoint WAN underlay tab.
      2. In the State drop-down list, select one of the following values:
         • Disabled if the SD-WAN Controller does not need to receive information about the interface.
         • NAT/PAT if the interface is behind NAT or PAT and needs to be assigned a public IP address and UDP port number, which must be sent to the SD-WAN Controller.
         • Disjoint WAN Underlay if the interface is on an isolated network and its IP address must be sent to the SD-WAN Controller.
      3. If in the State drop-down list, you selected NAT/PAT, follow these steps:
         1. In the Real IP Address field, enter the public IP address (IPv4) of the interface.
         2. In the Real GENEVE UDP Port field, enter the UDP port number of the interface. Range of values: 1 to 65,353.
      4. If in the State drop-down list, you selectedDisjoint WAN Underlay, in the IP address field, enter the IP address (IPv4) of the interface. You must enter the IP address specified when creating the network interface over which the SD-WAN interface is created.
  18. If necessary, override the IP address and port for connecting the interface to the SD-WAN Controller:
      1. Select the Controllers tab.
      2. Select the Rewrite controllers IP/Port check box. This check box is cleared by default.
      3. In the Controllers QTY drop-down list, select the number of Controller nodes in your SD-WAN instance.

         You must override the IP address for connecting the interface to each node of the SD-WAN Controller. Otherwise, an error occurs and the settings remain unchanged.

      4. In the Port field, enter the starting port number for connecting the interface to the SD-WAN Controller. The number of fields corresponds to the value that you selected in the Controllers QTY drop-down list. Range of values: 1 to 65,535. The default setting is 6653.

         The starting port is used to configure the ports for connecting to the SD-WAN Controller. The number of configured ports depends on the number of WAN interfaces of the CPE device. For example, if you enter 6653 as the starting port number and the device has four WAN interfaces, port numbers 6654, 6655, and 6656 are derived from that port.

      5. In the IP address field, enter the IP address (IPv4) for connecting the interface to the SD-WAN Controller. The number of fields corresponds to the value that you selected in the Controllers QTY drop-down list.

      After overriding the IP address and port for connecting the interface to the SD-WAN Controller, you must restart the CPE device.

  19. Click Create.

      The SD-WAN interface is created and displayed in the table.

  20. In the upper part of the settings area, click Save to save the configuration of the CPE device.
• Creating an SD-WAN interface on all devices that use the CPE template.

  To create an SD-WAN interface on all devices that use the CPE template:

  1. In the menu, go to the SD-WAN → CPE templates subsection.

     A table of CPE templates is displayed.

  2. Click the CPE template.

     The settings area is displayed in the lower part of the page. You can expand the settings area to fill the entire page by clicking the expand button .

  3. Select the SD-WAN settings → Interfaces tab.

     A table of SD-WAN interfaces is displayed.

  4. Click + SD-WAN interface.
  5. This opens a window; in that window, in the OpenFlow interface field, enter the number of the OpenFlow interface that must be created on the virtual switch of the CPE device.
  6. In the Interface (alias) field, enter the alias of the network interface to which you want to bind the OpenFlow interface.
  7. In the Maximum rate field, enter the maximum speed of the SD-WAN interface in Mbps. Range of values: 1 to 100 000. The default setting is 1000.
  8. Specify the host whose availability determines the availability of the SD-WAN interface:
     1. In the IP for tracking field, enter the IP address of the host.
     2. Click + Add.

     You can specify multiple hosts.

  9. In the Reliability field, enter the number of hosts that must remain available for the SD-WAN interface to be considered available. The default setting is 1.

     Make sure that the number of hosts does not exceed the number of IP addresses in the IP for tracking field. Otherwise, the SD-WAN interface will always be considered unavailable.

  10. In the Interval field, enter the SD-WAN interface testing interval in seconds. Range of values: 1 to 600. The default setting is 2.
  11. In the Count field, enter the number of availability checks for each of the specified hosts as part of a single SD-WAN interface test. Range of values: 1 to 600. The default setting is 2.
  12. In the Timeout field, enter the time in milliseconds for the SD-WAN interface to wait for an echo response from the hosts after sending an echo request. Range of values: 1 to 100 000. The default setting is 2000.
  13. In the Down field, enter the interval in seconds for testing the SD-WAN interface if it becomes unavailable. Range of values: 1 to 600. The default setting is 3.
  14. In the Up field, enter the interval in seconds for testing the SD-WAN interface if it becomes available again. Range of values: 1 to 600. The default setting is 2.
  15. In the Speed monitoring drop-down list, select whether to check the speed limit of the SD-WAN interface imposed by the mobile operator:
      • Yes
      • No (selected by default)
  16. If necessary, configure traffic queues on the SD-WAN interface:
      1. Select the QoS tab.

         A table of traffic queues is displayed.

      2. In the Remap ToS column, select the Type of Service value of external headers of traffic packets for each queue. You cannot select these values when configuring traffic queues for the LAN interface.
      3. In the Minimum Speed, % column, specify the minimum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface. The sum total in a column may not exceed 100.
      4. In the Maximum Speed, % column, specify the maximum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface. This setting is used to prevent traffic of high-priority queues from indefinitely preempting traffic of low-priority queues.

      The maximum speed of the interface is specified when configuring the connection of the CPE device to the SD-WAN network on the General settings tab in the Maximum rate field.

  17. If necessary, configure the sending of interface information to the SD-WAN Controller:
      1. Select the NAT and Disjoint WAN underlay tab.
      2. In the State drop-down list, select one of the following values:
         • Disabled if the SD-WAN Controller does not need to receive information about the interface.
         • NAT/PAT if the interface is behind NAT or PAT and needs to be assigned a public IP address and UDP port number, which must be sent to the SD-WAN Controller.
         • Disjoint WAN Underlay if the interface is on an isolated network and its IP address must be sent to the SD-WAN Controller.
      3. If in the State drop-down list, you selected NAT/PAT, follow these steps:
         1. In the Real IP Address field, enter the public IP address (IPv4) of the interface.
         2. In the Real GENEVE UDP Port field, enter the UDP port number of the interface. Range of values: 1 to 65,353.
      4. If in the State drop-down list, you selectedDisjoint WAN Underlay, in the IP address field, enter the IP address (IPv4) of the interface. You must enter the IP address specified when creating the network interface over which the SD-WAN interface is created.
  18. If necessary, override the IP address and port for connecting the interface to the SD-WAN Controller:
      1. Select the Controllers tab.
      2. Select the Rewrite controllers IP/Port check box. This check box is cleared by default.
      3. In the Controllers QTY drop-down list, select the number of Controller nodes in your SD-WAN instance.

         You must override the IP address for connecting the interface to each node of the SD-WAN Controller. Otherwise, an error occurs and the settings remain unchanged.

      4. In the Port field, enter the starting port number for connecting the interface to the SD-WAN Controller. The number of fields corresponds to the value that you selected in the Controllers QTY drop-down list. Range of values: 1 to 65,535. The default setting is 6653.

         The starting port is used to configure the ports for connecting to the SD-WAN Controller. The number of configured ports depends on the number of WAN interfaces of the CPE device. For example, if you enter 6653 as the starting port number and the device has four WAN interfaces, port numbers 6654, 6655, and 6656 are derived from that port.

      5. In the IP address field, enter the IP address (IPv4) for connecting the interface to the SD-WAN Controller. The number of fields corresponds to the value that you selected in the Controllers QTY drop-down list.

      After overriding the IP address and port for connecting the interface to the SD-WAN Controller, you must restart the CPE device.

  19. Click Create.

      The SD-WAN interface is created and displayed in the table.

  20. In the upper part of the settings area, click Save to save the configuration of the CPE template.