Configuring VLANs

You can configure one or more physical ports on the AP to be a member of a VLAN 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.. Additionally, each wireless client association constitutes a connection to a virtual port on the AP, with membership in a specified VLAN. You can place all authenticated wireless users into a single VLAN or into different VLANs, depending on your network requirements.

To configure a VLAN on Microbranch, 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. Click LAN Local Area Network. A LAN is a network of connected devices within a distinct geographic area such as an office or a commercial establishment and share a common communications line or wireless link to a server. > VLANs.

    The VLAN page is displayed.

  5. Click the + icon in the VLANs table to add a new VLAN.
  6. Enter a profile name in the 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.  profile name field.
  7. Enter a VLAN ID in the VLAN ID field.
  8. Enter details for the parameters provided in the following table.

    Table 1: LAN Parameters




    Select this option to route traffic between the VLANs that are mapped to the IP sub-networks.


    Select this option to enable NAT Network Address Translation. NAT is a method of remapping one IP address space into another by modifying network address information in Internet Protocol (IP) datagram packet headers while they are in transit across a traffic routing device. only for the outbound traffic on public-facing egress VLAN interfaces.

    When this feature is enabled on an uplink VLAN interface, the source address is translated with the IP address of the VLAN interface to all the outbound traffic. Aruba Central assigns the IP ranges to the AP, and does not use the shared DHCP pool IP address ranges from IPMS.

    DHCP Server Configuration

    IP Assignment

    Pool—Select this option to choose a DHCP pool from the drop-down list.

    Static—Select this option to enter a static IP address.

    DHCP pool

    Select a DHCP pool from the DHCP pool drop-down list. The DHCP pool can be configured using IP Address Manager in Network services. For more information on configuring DHCP shared pools, see Configuring Shared DHCP Pools.


    Enter the Subnet Subnet is the logical division of an IP network. address in IPV4 format.

    This option is available only if IP Assignment is Static.

    NOTE: You can configure this parameter only at the device level.

    Subnet Mask

    Specify the subnet mask. The subnet mask and the network determine the size of subnet.

    This option is available only if IP Assignment is Static.

    NOTE: You can configure this parameter only at the device level.

    Act as DHCP server

    Enable this check box to configure a Microbranch as a DHCP server and configure the following parameters.

    Domain Name

    Enter the domain name.

    Excluded addresses

    Specify a range of IP addresses to exclude.

    The valid range is from 0 to the maximum number of IPs. Based on the size of the subnet and the value configured for Excluded address, the IP addresses before the defined range are excluded. If the number of IPs is 199, the valid range is 0-199.

    DNS Server

    Select one of the following DNS Domain Name System. A DNS server functions as a phone book for the intranet and Internet users. It converts human-readable computer host names into IP addresses and IP addresses into host names. It stores several records for a domain name such as an address 'A' record, name server (NS), and mail exchanger (MX) records. The Address 'A' record is the most important record that is stored in a DNS server, because it provides the required IP address for a network peripheral or element. server types:

    Enter the IP address of a DNS server if Specify servers option is selected.

    DDNS Profile

    Select a DDNS profile from the DDNS Profile drop-down list. For more information on configuring a DDNS profile, see Configuring a DDNS Server Profile.

    Enable Dynamic DNS

    This option is available only if you select the Specify servers option under DNS Server.

    Select the Enable Dynamic DNS check box to enable the feature and display the DDNS configuration parameters.

    • Key—Enter the secret key to secure the dynamic updates.
    • DDNS Pointer Record (PTR)—Select the check box to enable Pointer Records (PTR) in DDNS client updates. For more information on PTR, see Configuring Dynamic DNS for Microbranch.

    DHCP Options

    Enter Type and Values parameter. For DHCP options, maximum eight options can be assigned.

    DHCP Lease Time

    Enter a lease time for the client in minutes.

    Relay to external

    Enable this check box to relay the incoming DHCP request to an external DHCP server.

    External DHCP Servers

    Add the DHCP server IP address to which you want to relay the DHCP requests in the table. This table appears only if you select the Relay to external check box. A maximum of three servers are supported.

    The Summary card displays the IP Range, Number of IPs, and Number of Pools.

  9. Click Save.

    A maximum of six DHCP scopes or profiles can be added or configured.