Configure WAN/WWAN priority and default route metrics

The TX54 device is preconfigured with one Wide Area Network (WAN), named WAN1, and one or two Wireless Wide Area Network (WWAN)s, named WWAN or WWAN1 and WWAN2. You can also create additional WANs and WWANs.

When a WAN is initialized, the TX54 device automatically adds a Setup IP route for the WAN. The priority of the WAN is based on the metric of the default route, as configured in the WAN's IPv4 and IPv6 metric settings.

Assigning priority to WANs

By default, the TX54 device's WAN (WAN1) is configured with the lowest metric (1), and is therefor the highest priority WAN. By default, the Wireless WANs (WWAN or WWAN1 and WWAN2) are configured with a metric of 3, which means they have an equal priority between themselves, and a lower priority than WAN1. You can assign priority to WANs based on the behavior you want to implement for primary and backup WAN interfaces. For example, if you want a cellular connection to be your primary WAN, with an Ethernet interface as backup, configure the metric of the WWAN to be lower than the metric of the WAN.

Example: Configure cellular connection as the primary WAN, and the Ethernet connection as backup

Required configuration items


  1. Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access rights.
  2. Access the device configuration:

    1. Locate your device as described in Use Digi Remote Manager to view and manage your device.
    2. Click the Device ID.
    3. Click Settings.
    4. Click to expand Config.

    1. On the menu, click System. Under Configuration, click Device Configuration.

      The Configuration window is displayed.

  3. Set the metrics for WWAN or WWAN1:
    1. Click Network > Interfaces > WWAN or WWAN1 > IPv4.
    2. For Metric, type 1.
    3. Click IPv6.
    4. For Metric, type 1.

  4. Set the metrics for WAN1:
    1. Click Network > Interfaces > WAN1 > IPv4.
    2. For Metric, type 2.
    3. Click IPv6.
    4. For Metric, type 2.

  5. Click Apply to save the configuration and apply the change.

The TX54 device is now configured to use the cellular modem WWAN, WWAN1 or WWAN, as its highest priority WAN, and its Ethernet WAN, WAN1, as its secondary WAN.

 

  1. Select the device in Remote Manager and click Actions > Open Console, or log into the TX54 local command line as a user with full Admin access rights.

    Depending on your device configuration, you may be presented with an Access selection menu. Type admin to access the Admin CLI.

  2. At the command line, type config to enter configuration mode:

    > config
(config)>

  3. Set the metrics for WWAN or WWAN1:

    1. Set the IPv4 metric for WWAN or WWAN1 to 1. For example:

      (config)> network interface wwan1 ipv4 metric 1
(config)>

    2. Set the IPv6 metric for WWAN or WWAN1 to 1:

      (config)> network interface wwan1 ipv6 metric 1
(config)>
  4. Set the metrics for WAN1:

    1. Set the IPv4 metric for WAN1 to 2:

      (config)> network interface wan1 ipv4 metric 2
(config)>

    2. Set the IPv6 metric for WAN1 to 1:

      (config)> network interface wan1 ipv6 metric 2
(config)>
  5. Save the configuration and apply the change.
    (config)> save
Configuration saved.
>
  6. Type exit to exit the Admin CLI.

    Depending on your device configuration, you may be presented with an Access selection menu. Type quit to disconnect from the device.

The TX54 device is now configured to use the cellular modem WWAN, WWAN or WWAN1, as its highest priority WAN, and its Ethernet WAN, WAN1, as its secondary WAN.