Configuring Default Gateways for Dynamic Routing

The default gateway is statically defined on VPNCs and dynamically derived on the Branch Gateways from the ISP Internet Service Provider. An ISP is an organization that provides services for accessing and using the Internet. through DHCP Dynamic Host Configuration Protocol. A network protocol that enables a server to automatically assign an IP address to an IP-enabled device from a defined range of numbers configured for a given network.  or PPPoE Point-to-Point Protocol over Ethernet. PPPoE is a method of connecting to the Internet, typically used with DSL services, where the client connects to the DSL modem..

The default gateways that are dynamically derived through DHCP, Cellular link, or PPPoE are installed in the route table with a default cost of 10. If a deployment includes Branch Gateways with multiple internet based WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. services that implement both dynamic and static addressing, HPE Aruba Networking recommends that you define static default gateways at a cost equal to the dynamically learned default gateways, so that both default gateways can be installed in the routing table on Branch Gateways.

To configure dynamic default gateways on Branch Gateways:

  1. In the WebUI, perform one of the following:

    • To select a gateway group:

      1. In the Classic Central app, set the filter to a group that contains at least one Branch Gateway.

        The dashboard context for a group is displayed.

      2. Under Manage, click Devices > Gateways.

        A list of gateways is displayed in the List view.

      3. Click Config.

        The configuration page is displayed for the selected group.

    • To select a gateway:

      1. In the Classic Central app, set the filter to Global or a group that contains at least one Branch Gateway.

      2. Under Manage, click Devices > Gateways.

        A list of gateways is displayed in the List view.

      3. Click a gateway under Device Name.

        The dashboard context for the gateway is displayed.

      4. Under Manage, click Device.

        The gateway device configuration page is displayed.

  2. If you are in the Basic Mode, click Advanced Mode to access the advanced configuration options.
  3. Click Routing > IP Routes.
  4. Expand Dynamic Default Gateway.
  5. To configure the server type from which Branch Gateways can learn the default gateways, select DHCP or PPPoE.
  6. Specify the cost for each server type you selected. The Branch Gateway first tries to obtain a gateway IP address using the option with the least cost. If the Branch Gateway is unable to obtain a gateway IP address, it tries to obtain a gateway IP address using the option with the next lowest path cost.
  7. Click Save Settings.

This animation will help you to configure dynamic default gateways on Branch Gateways.