Setup guide

address space. WLAN and LAN interfaces form the virtual bridge interface while acting
as the bridge ports. The bridge has assigned IP settings for management purposes:
Bridge IP Address: The device can be set for static IP or can be set to obtain an IP
address from the DHCP server it is connected to.
One of the IP assignment modes must be selected:
DHCP – choose this option to assign the dynamic IP address, Gateway and DNS
address by the local DHCP server.
Static – choose this option to assign the static IP settings for the bridge
interface.
IP Address: enter the IP address of the device while Static Bridge IP Address mode is
selected. This IP will be used for the AirOS device management purposes.
IP Address and Netmask settings should consist with the address space of the network
segment where AirOS device resides. If the device IP settings and administrator PC
(which is connected to the device in wired or wireless way) IP settings will use
different address space, the AirOS device will become unreachable.
Netmask: This is a value which when expanded into binary provides a mapping to
define which portions of IP address groups can be classified as host devices and
network devices. Netmask defines the address space of the network segment where
AirOS device resides. 255.255.255.0 (or /24) Netmask is commonly used among many
C Class IP networks.
Gateway IP: Typically, this is the IP address of the host router which provides the
point of connection to the internet. This can be a DSL modem, Cable modem, or a
WISP gateway router. AirOS device will direct the packets of data to the gateway if the
destination host is not within the local network.
Gateway IP address should be from the same address space (on the same network
segment) as the AirOS device.
Primary/Secondary DNS IP: The Domain Name System (DNS) is an internet "phone
book" which translates domain names to IP addresses. These fields identify the server
IP addresses of where the AirOS device looks for the translation source.
Primary DNS server IP address should be specified for the device management
purposes.
Secondary DNS server IP address is optional. It is used as the fail-over in case the
primary DNS server will become unresponsive.
DHCP Fallback IP: In case the Bridge is placed in Dynamic IP Address mode (DHCP)
and is unable to obtain an IP address from a valid DHCP server, it will fall back to the
static IP address listed here.
In case the IP settings of the AirOS powered device are unknown, they can be
retrieved with the help of the [UBNT_Discovery_Utility Ubiquiti Discovery Utility]. Multi-