Configuring the WAN Uplink

Uplinks connect Microbranch to underlay networks. By default, both wired and cellular uplinks are set as active links with load balancing enabled on Microbranch.

To configure a WAN Wide Area Network. WAN is a telecommunications network or computer network that extends over a large geographical distance. interface, complete the following steps:

  1. In the Aruba Central app, set the filter to a Microbranch group that contains at least one AP.

    The dashboard context for a group is displayed.

  2. Under Manage, click Devices > Access Points.

  3. Click the Config icon.

    The Microbranch group configuration page is displayed.

  4. In the WAN card, click WAN Uplink.

    The WAN uplink page is displayed. This section defines uplink interfaces by creating WAN-facing VLANs Virtual Local Area Network. In computer networking, a single Layer 2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them through one or more routers; such a domain is referred to as a Virtual Local Area Network, Virtual LAN, or VLAN., labeling them as uplink interfaces, and assigning them to the desired uplink ports.

  5. To add a WAN port, click the + icon in the WAN Uplinks table.

    The Add Uplink page is displayed.

  6. To configure an ethernet or cellular uplink, select the WAN type from the drop-down list, and enter details for the parameters provided in the following table.

    Table 1: WAN Parameters




    Specify the name of the uplink.


    Specify the VLAN ID that you want to assign to the uplink. By default, this is set to 4092 or 4093 based on availability.

    NOTE: The valid VLAN IDs range from 2 to 4093, except 3333.

    WAN Type

    Specify one of the following connection types:

    By default, Ethernet is selected.

    NOTE: Aruba Central creates a wired profile when ethernet uplink (eth0 or eth1) is added as one of the uplink profile. For more information of wired profiles, refer Configuring Port Profiles.

    If WAN Type is Ethernet, provide details for the following parameters.


    Configure the uplink speed to optimize performance.

    Range of values is 10-5000 Mbps.

    If not set, the WAN uplink speed defaults to auto-negotiated port speed for INET, MPLS Multiprotocol Label Switching. The MPLS protocol speeds up and shapes network traffic flows. , and Metro-Ethernet. Based on the speed and bandwidth threshold allowed for an uplink, Microbranch assigns the session traffic.

    Use as backup

    Enable this option if you want to use the uplink in the standby mode.

    By default, only one uplink operates as an active uplink. While configuring the first uplink, this option is disabled. While configuring the second uplink, this option is enabled.

    NOTE: This option is disabled while editing the existing uplink configuration.

    IP addressing method

    Select one of the following options:

    Static IP address

    Enter the static IP address.

    This option is available only if the IP addressing method is Static IP address.

    Network mask

    Enter the network mask.

    This option is available only if the IP addressing method is Static IP address.


    Enter the username.

    This option is available only if the IP addressing method is PPPoE.

    Password and Retype Password

    Enter the password, and retype the password.

    This option is available only if the IP addressing method is PPPoE.

    CHAP Challenge-Handshake Authentication Protocol. CHAP is a challenge and response authentication method used to verify the identity of a remote user. Secret and Retype CHAP Secret

    Enter the CHAP secret, and retype the CHAP secret.

    This option is available only if the IP addressing method is PPPoE.

    Service Name

    Enter the PPPoE service name.

    This option is available only if the IP addressing method is PPPoE.

    LCP interval

    Enter the PPPoE LCP interval.

    This option is available only if the IP addressing method is PPPoE.

    LCP failure

    Enter the PPPoE LCP failure value.

    This option is available only if the IP addressing method is PPPoE.

    Port assignment

    Assign an available port for the uplink. For ethernet, maximum of two ports can be assigned. The previously assigned ports are not available for selection in the drop-down list.

    If WAN Type is Cellular, provide details for the following parameters to configure Cellular WAN Type (3G Third Generation of Wireless Mobile Telecommunications Technology. See W-CDMA. or 4G Fourth Generation of Wireless Mobile Telecommunications Technology. See LTE. uplinks).


    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. as the modem type to configure a 3G or 4G uplink manually.

    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 have selected Manual, enter the PLMN ID in the text box.

    By default, Auto is selected.


    Select one of the following network modes:

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

    Select the check box to enable GPS.

    Sim Slot

    Select sim slot 1, 2, or Auto.

    By default, Auto is selected.

  7. Click Save.

  • Microbranch supports a total of two uplinks which include two wired uplinks and a combination of one wired uplink and one cellular uplink. The uplink configuration works in APs in the Microbranch group with ArubaOS 10.3 or later versions.

  • A cellular uplink (4G/5G) can be configured as the primary uplink only if it is the sole uplink, with no other secondary uplink. Otherwise, it should be configured as a secondary uplink.