Creating a network interface for connecting to an LTE network

To create a network interface for connecting to an LTE network:

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

    The table of network interfaces is displayed.

  2. Click + Network interface.
  3. This opens a window; in that window, in the Alias field, enter the name of the network interface for mapping the network interface to an OpenFlow port. You must specify this network interface name when creating an SD-WAN interface of the WAN type. The maximum length of the name is 15 characters.
  4. If you want to add a network interface to a firewall zone, in the Zone drop-down list, select the created firewall zone.
  5. In the Protocol drop-down list, select QMI.
  6. In the QMI name field, enter the path to the modem on the CPE device. The maximum length of the path is 30 characters. For example, you can enter /dev/cdc-wdm0.
  7. In the APN field, enter the APN ID of the service provider that issued the SIM card installed in the modem. The maximum length of the ID is 30 characters.
  8. In the Authentication type drop-down list, select the authentication type on the network interface:
    • PAP (Password Authentication Protocol).
    • CHAP (Challenge-Handshake Authentication Protocol).
    • PAP and CHAPmeans that both types of authentication are used on the network interface.
    • Nonemeans that authentication is not used on the network interface.
  9. In the Username for PAP/CHAP authentication field, enter the user name for PAP/CHAP authentication. The maximum length of the name is 30 characters. If you do not want to use authentication, do not specify a value for this setting.
  10. In the Password for PAP/CHAP authentication field, enter the password for PAP/CHAP authentication. Maximum length of the password: 30 characters. If you do not want to use authentication, do not specify a value for this setting.
  11. In the PIN code field, enter the PIN code of the SIM card installed in the modem. Maximum PIN length: 4 digits.
  12. In the Delay field, enter the time in seconds after which the network interface begins to communicate with the modem. Maximum value: 30. This setting is used when the modem takes too long to start.
  13. If necessary, specify a network mode for the network interface:
    1. Under Modes, click + Add.
    2. In the drop-down list, select one of the following values:
      • All (use all available network modes).
      • LTE.
      • UMTS.
      • GSM.
      • CDMA.
      • TD-SCDMA.

    The network mode is specified and displayed under Modes. You can specify multiple network modes or delete a network mode. To delete a network mode, click the delete icon cross_icon_3 next to it.

  14. If necessary, specify a DNS server for the network interface:
    1. Under DNS servers, click + Add.
    2. In the field that is displayed, enter the IP address of the DNS server.

    The DNS server is specified and displayed in the DNS servers section. You can specify multiple DNS servers or delete a DNS server. To delete a DNS server, click the delete icon cross_icon_3 next to it.

  15. In the Connection profile field, enter the connection profile index that the network interface uses instead of the APN ID. The maximum length of the index is 30 characters.
  16. In the IP stack drop-down list, select the IP stack that you is used on the network interface:
    • IPv4 to use the IPv4 protocol stack on the network interface. Default value.
    • IPV6 to use the IPv6 protocol stack on the network interface.
    • Dual stack (IPv4 and IPv6) to use IPv4 and IPv6 dual stack on the network interface.
  17. Clear the IPv4 over DHCP check box if you do not want to assign an IPv4 address to the network interface via DHCP. To select this check box simultaneously with the IPv6 over DHCP check box, select Dual stack (IPv4 and IPv6) (for dual stack) in the IP stack drop-down list. This check box is selected by default.
  18. Select the IPv6 over DHCP check box to assign an IPv6 address to the network interface via DHCP. To select this check box simultaneously with the IPv4 over DHCP check box, select Dual stack (IPv4 and IPv6) in the IP stack drop-down list. This check box is cleared by default.
  19. Clear the Autoconnect check box if you do not want the modem to automatically connect to the network. This check box is selected by default.
  20. In the PLMN field, enter the PLMN ID of the service provider. The first three digits of the PLMN ID are the country code, and the next three digits are the mobile network code.
  21. In the Timeout field, enter the time in seconds for the network interface to wait for the completion of the SIM card operations on the modem. Maximum value: 20. Default value: 10.
  22. In the Serial port field, enter the serial port number of the modem. The maximum length of the number is 50 characters.
  23. In the Route metric field, enter the default route metric for the network interface. The CPE device uses the default route with the lowest metric. For example, you can specify the following default route metrics for network interfaces:
    • 100 for network interface sdwan0
    • 101 for network interface sdwan1
    • 102 for network interface sdwan2

    In this case, the CPE device uses the default route of the sdwan0 network interface. If the sdwan0 network interface fails, the default route of the sdwan1 network interface is used next, followed by the default route of the sdwan2 network interface.

  24. Click Create.

    The network interface is created and displayed in the table.

  25. 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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