User guide

LAN/Wi-Fi Configuration
Rev 1 Oct.13 73
Tip: If you are using Private Mode for all hosts (*HOSTPRIVMODE=1), make sure that
device IP, Starting IP, and Ending IP are on the same subnet defined by the DHCP network
mask. If the subnet mask is 255.255.255.0, it is safe to use 192.168.x.y for each as long as
the x is the same number (0 in the example screen shot above) and the y is different (1
and 2 in the example) and between 0 and 254.
Internal DHCP Server
DHCP (Dynamic Host Configuration Protocol) has become a primary component
of today’s network environments. DHCP allows one server to automatically and
dynamically allocate network IP addresses and other network related settings
(such as subnet masks, routers, etc.) to each computer or device without the
need to set up each specifically or keep track of what addresses have already
been used.
In a default configuration, the AirLink device acts as a DHCP host to any device
connected to its ports. This DHCP host provides that device with an IP address
that can be used to communicate on the Internet.
Address Assignment in Public Mode
1. When the AirLink device registers on the cellular network, it is assigned an IP
address from the carrier, e.g., 10.1.2.0.
LAN Address
Summary
Displays the interfaces which have been enabled. By default, only the Ethernet and
USBNET Interfaces are enabled.
Interface The physical interface port or VLAN ID
Device IP The IP address of the AirLink device for the specified interface port. By default, this is set to
192.168.13.31 for Ethernet/WiFi and 192.168.14.31 for USB/net.
Subnet Mask Subnet mask indicates the range of host IP addresses that can be reached directly.
Changing this limits or expands the number of clients that can connect to the AirLink
device. The default of 255.255.255.0 means that 254 clients can connect to the AirLink
device. Uses 192.168.13. as the first three octets of the IP address if the device IP is
192.168.13.31.
Access Internet Appears if the interface is configured to allow connected host(s) access to the Internet
Note: Internet access cannot be disabled for Ethernet or Wi-Fi hosts.
DHCP Server Mode Indicates whether or not the interface has a DHCP server enabled to provide dynamically
allocated IP addresses provided to connected hosts
Starting IP Ethernet DHCP pool starting IP address
Ending IP The ending IP for the interface. If the starting and ending IP are the same, there is a single
address in the pool and only one host receives an IP address from the DHCP server for
that interface. Some interfaces, such as USB, can only have a single host connection. For
others, statically assigned IP addresses in the same subnet, but outside of the DHCP pool,
can still connect and use the device in the same way as a DHCP connected host.
Field Description