Data Communication and Host Modes
RLXIC-EH
♦
Intelligent Cellular
User Manual
RadioLinx Intelligent Cellular Ethernet Gateway for HSUPA (3G GSM) Networks
ProSoft Technology, Inc.
Page 55 of 111
May 29, 2009
In a default configuration, the RLXIC-EH acts as a DHCP host to any device
connected to its ports, providing that device with an IP address which can be
used to communicate on the Internet. In Public Mode, that will be the IP address
assigned by the cellular network. In Private Mode, that will be the IP address
defined in *HOSTPRIVIP.
1
When the RLXIC-EH registers on the cellular network, it is assigned an IP
address from your cellular provider, for example, 10.1.2.0.
2
Acting as a DHCP server, in Public Mode, when the RLXIC-EH receives a
DHCP request from an Ethernet device connected via USB, it hands off the
assigned address to the device, and sets up the default gateway address as
10.1.2.1. If the fourth octet is already a 1, it assigns 10.1.2.2 as the router
address.
3
The RLXIC-EH also sends a /24 netmask (255.255.255.0 by default), and
sets up a static route which maps 192.168.13.31 (or the address configured
with *HOSTPEERIP if it is changed) to 10.1.2.1 (or 10.1.2.2 if that was what
the gateway address was given as).
Tip:
When PPPoE is used with the RLXIC-EH, DHCP is not needed. A tunnel is set up connecting
a device (such as your computer or a router) with the modem. The device will then simply use the
MAC address of the RLXIC-EH to send all outgoing packets.
Additional Connected Networks
If you have a router connected to the RLXIC-EH with additional networks
configured behind that router, you can specify them in the PPP/Ethernet group of
AceManager. Configure the Network the Host Network Mask for up to two
additional networks.
7.4.2 Basic
Routing
Expanding the capabilities of the RLXIC-EH, ALEOS features some basic routing
to connected computers and networks.
Port Forwarding
Any data coming in on the defined Public Port will be passed to the
corresponding Private Port connected to the physical interface specified and
using the host IP address.
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