Configuring Uplinks

Most network devices such as APs, wireless routers, switches, and hubs are connected to a network backbone using Ethernet Ethernet is a network protocol for data transmission over LAN.. In enterprise networks, APs normally connect to a switch with an Ethernet uplink and at homes, an AP normally connects to an ISP Internet Service Provider. An ISP is an organization that provides services for accessing and using the Internet. modem or a small switch using Ethernet. Though Ethernet is the most common and widespread uplink used for APs, some remote networks in particular have certain special uplink requirements. The following are some of the factors that require the need for an alternative to the standard Ethernet uplink of APs:

  • Redundancy—In remote deployments, organizations have limited or no IT support and require the network to be always up to ensure productivity. Such organizations often require a backup link when the primary uplink fails. Some examples of organizations that require uplink redundancy include:
    • Energy companies having unmanned remote sites that have to be remotely accessible for monitoring purposes.
    • Healthcare and retail companies having remote and satellite offices that are required to be always up and accessible to carry out business.
    • Organizations with remote offices where employees depend heavily on centralized or cloud based services.
  • Lack of Ethernet uplink—Sometimes, extending an Ethernet uplink to a location is expensive or impossible due to geographical factors. In such situations, organizations require alternative uplink capabilities to connect to the internet and corporate resources. Some examples where an alternate uplink is required include:

A cellular uplink (4G Fourth Generation of Wireless Mobile Telecommunications Technology. See LTE./5G) can be configured as the primary uplink only if it is the sole uplink, with no other secondary uplink.

Configuring AP1X

To configure 802.1X 802.1X is an IEEE standard for port-based network access control designed to enhance 802.11 WLAN security. 802.1X provides an authentication framework that allows a user to be authenticated by a central authority. authentication on uplink ports of an AP, complete the following steps in the WebUI:

  1. In the Aruba Central app, set the filter to a group that contains at least one AP.
    The dashboard context for the group is displayed.
  2. Under Manage, click Devices > Access Points.
  3. Click the Config icon.
    The tabs to configure APs are displayed.
  4. Click Show Advanced, and click the Interfaces tab.
    The Interfaces details page is displayed.
  5. Click the Uplink accordion.
  6. Under Modem enter the details for the parameters provided in the following table:

    Table 1: Modem Parameters




    Select Aruba USB Universal Serial Bus. USB is a connection standard that offers a common interface for communication between the external devices and a computer. USB is the most common port used in the client devices.  LTE Long Term Evolution. LTE is a 4G wireless communication standard that provides high-speed wireless communication for mobile phones and data terminals. See 4G. from the drop-down.

    A new Aruba USB LTE modem is introduced across Remote APs Remote APs extend corporate network to the users working from home or at temporary work sites. Remote APs are deplyed at branch office sites and are connected to the central network on a WAN link. and Gateways.

    Access point name (APN)

    Enter the name of the Access Point to which the uplink connects.

    Public land mobile network (PLMN Public Land Mobile Network. PLMS is a network established and operated by an administration or by a Recognized Operating Agency for the specific purpose of providing land mobile telecommunications services to the public.)

    Select Auto or Manual for the PLMN. If you select Manual, enter the PLMN ID in the text box. By default, PLMN is Auto mode.


    Select one of the following network modes:

    Enable GPS Global Positioning System. A satellite-based global navigation system.

    Select this check box to enable GPS.

  7. Select one of the following 802.1X authentication protocols to be used from the AP1X Type drop-down list:
  8. Check the Validate Server check-box to enable or disable server certificate verification by the AP.
  1. Click Save Settings.
  2. Reboot the AP for the configuration to take effect.