Creating an SD-WAN interface of the WAN type

You can create an SD-WAN interface of the WAN type in a CPE template or on a CPE device. An SD-WAN interface of the WAN type created in a CPE template is automatically created on all CPE devices that are using this CPE template.

To create an SD-WAN interface of the WAN type:

  1. Create an SD-WAN interface of the WAN type in one of the following ways:
    • If you want to create an SD-WAN interface of the WAN type in a CPE template, go to the SD-WAN → CPE templates menu section, click the CPE template, and select the SD-WAN → Interfaces tab.
    • If you want to create an SD-WAN interface of the WAN type on a CPE device, go to the SD-WAN → CPE menu section, click the CPE device, and select the SD-WAN → Interfaces tab.

    A table of SD-WAN interfaces is displayed.

  2. Click + SD-WAN interface.
  3. This opens a window; in that window, in the OpenFlow port field, enter the number of the OpenFlow port that you are creating on the virtual switch.
  4. In the Interface (alias) field, enter the name of the created network interface, which the SD-WAN interface of the WAN type is mapped to.
  5. In the Maximum rate field, enter the maximum speed of the SD-WAN interface of the WAN type in Mbps. Range of values: 1 to 100,000. Default value: 1000.
  6. Configure the availability check of the WAN to which the SD-WAN interface of the WAN type is connected:
    1. Specify the host for checking WAN availability. To do so, under IP for tracking, enter the IP address of the host and click + Add.

      The host is specified and displayed under IP for tracking. You can specify multiple hosts or delete a host. To delete a host, click the delete icon cross_icon_3 next to it.

    2. In the IP for fragmentation check field, enter the IPv4 address of the host up to which fragmentation support is checked. Default value: 1.1.1.1.
    3. In the Reliability field, enter the minimum number of successful checks that makes the WAN available. Default value: 1.

      Make sure that the number of hosts does not exceed the number of IP addresses specified under IP for tracking. Otherwise, the WAN will always be considered unavailable.

    4. In the Interval (sec.) field, enter the time interval in seconds for the WAN check. Range of values: 1 to 600. Default value: 2.
    5. In the Count field, enter the number of requests to hosts within one WAN check. Range of values: 1 to 600. Default value: 2.
    6. In the Timeout field, enter the time to wait for a response from hosts, in milliseconds. Range of values: 1 to 100,000. Default value: 2000.
    7. In the Down field, enter the number of unsuccessful checks that makes the WAN unavailable. Range of values: 1 to 600. Default value: 3.
    8. In the Up field, enter the number of successful checks that makes the WAN available. Range of values: 1 to 600. Default value: 2.
    9. In the Speed monitoring drop-down list, select whether the speed of the SD-WAN interface of the WAN type is being measured:
      • Yes
      • No Default value.
  7. If you want to configure traffic queues on the SD-WAN interface of the WAN type:
    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.
    3. In the Minimum rate (%) column, specify the minimum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface of the WAN type. The sum total in a column may not exceed 100.
    4. In the Maximum rate (%) column, specify the maximum traffic bandwidth for the queue as a percentage of the maximum speed of the SD-WAN interface of the WAN type. This setting is used to prevent traffic of high-priority queues from indefinitely preempting traffic of low-priority queues.

    The maximum speed of the SD-WAN interface of the WAN type is specified at step 5 of these instructions.

  8. If you want to configure the sending of information about the SD-WAN interface of the WAN type to the 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 you do not want information about the SD-WAN interface of the WAN type to be sent to the controller. Default value.
      • NAT/PAT if the SD-WAN interface of the WAN type is behind NAT or PAT and needs to be assigned a public IP address and UDP port number, which must be sent to the controller.
      • Disjoint WAN underlay means the SD-WAN interface of the WAN type is connected to an isolated network, and the IP address of the SD-WAN interface of the WAN type must be passed to the controller.
    3. If in the State drop-down list, you selected NAT/PAT, follow these steps:
      1. In the Real IP field, enter the public IPv4 address of the SD-WAN interface of the WAN type.
      2. In the Real GENEVE UDP port field, enter the UDP port number of the SD-WAN interface of the WAN type. Range of values: 1 to 65,535.
    4. If in the State drop-down list you selected Disjoint WAN underlay, enter the IPv4 address of the SD-WAN interface of the WAN type in the IP address field.
  9. If SD-WAN interfaces of the WAN type of the CPE device are connected to different networks, for example, the internet and a private MPLS network, you can change the IP addresses and TCP port numbers of controller nodes on an individual SD-WAN interface of the WAN type. To do so:
    1. Select the Controllers tab.
    2. Select the Rewrite controllers' IP/port check box. This check box is cleared by default.
    3. In the Number of controllers drop-down list, select the number of controller nodes.

      You need to specify the number of controller nodes that you deployed when you deployed the SD-WAN instance. Otherwise, an error occurs and the settings remain unchanged.

    4. In the IP address field, enter the IPv4 address of the controller node. The number of fields corresponds to the value that you selected in the Number of controllers drop-down list.
    5. In the Port field, enter the base port number of the controller node. Range of values: 1 to 65,535. Default value: 6653. The number of fields corresponds to the value that you selected in the Number of controllers drop-down list.

      Along with the base port of the controller node, ports with the next three consecutive numbers are automatically specified. For example, if you enter the 6653 as the base port number, ports 6654, 6655, and 6656 are automatically specified.

    For the changes to take effect, you need to restart the CPE device after changing the IP addresses and TCP port numbers of controller nodes on the SD-WAN interface of the WAN type.

    You can change the IP addresses and TCP port numbers of the controller nodes while configuring the controller nodes of an SD-WAN instance. This automatically changes the IP addresses and TCP port numbers of controller nodes on all CPE devices that are added to the SD-WAN instance. The IP addresses and TCP port numbers specified on an individual SD-WAN interface of the WAN type take precedence over the IP addresses and TCP port numbers specified when configuring the controller nodes of the SD-WAN instance.

  10. Click Create.

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

  11. In the upper part of the settings area, click Save to save the settings of the CPE template or CPE device.
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