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Managing CPE devices  >  Managing network interfaces  >  Creating network interfaces  >  Creating a network interface for connecting to an LTE network

Creating a network interface for connecting to an LTE network

This functionality is not supported by some models. For advice, please contact Kaspersky Technical Support.

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 CHAP means that both types of authentication are used on the network interface.
    • None means 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. The maximum length of the password is 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 network modes. 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 DNS servers. 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. This is the default setting.
    • 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 name of the modem. The maximum length of the name is 50 characters.
  23. If necessary, 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.

    The route metric for network interfaces with sdwan0–sdwan3 aliases is assigned automatically at CPE startup: the sdwan0 gets the highest priority, and the lowest priority goes to sdwan3. 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. The value in the Route metric field is blocked for manual editing for interfaces with sdwan0–sdwan9 aliases.

    The metric is automatically calculated from the following attributes:

    • 1–4 if there are no errors and there is internet access
    • 11–14 if there are no errors and no internet access
    • 21–24 if there are errors and no internet access.

    Metrics are automatically assigned to interfaces depending on the number the interface alias ends in, in accordance to the following scheme:

    • sdwan0: 1, 11, 21
    • sdwan1: 2, 12, 22
    • sdwan2: 3, 13, 23
    • sdwan3: 4, 14, 24
  24. Click Create.

    The network interface is created and displayed in the table.

  25. In the lower part of the settings area, click Save to save the settings of the CPE template or CPE device.
Article ID: 258298, Last review: Apr 17, 2025
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