Quatech WLNG-ET-DP500 Series - Manual (Page 24)

Company Confidential Quatech, Inc.
24 Airborne CLI Reference Manual 100-8081-100
8.0 Serial Device Server Use
In this section the base functionality of the Serial/UART device server will be described
and examples of use and configuration will be provided to highlight the best use of the
module and CLI. Refer to this section to understand the differences between a command
port, data tunnel, TCP/IP vs. UDP use and server vs. device operation.
The Airborne Enterprise Serial Device server provides the ability to connect a raw serial
data stream to a TCP/IP based network using 802.11 as the primary network connection
media. To facilitate this functionality the module supports a number of management and
data bridging interfaces on both the serial (Serial/UART/SPI) and network (802.11)
interfaces. As described in section 3.2, there are multiple states for the CLI interface; this
section will describe the data bridging options and the required CLI configuration for
each.
8.1 Data Bridging
The Airborne™ WLN Module provides data bridging via the PASS and LISTEN
Modes of the CLI Session. During data bridging, the raw payload of the incoming
TCP or UDP packet is transmitted to the serial interface while the raw data
stream from the serial interface is transmitted as the payload of the outgoing TCP
or UDP packet.
There are multiple ways to setup a data bridge using the Airborne™ WLN
Module. A bridge may be initiated from the Serial Host, from a TCP connection
on the
wl-telnet-port , from a TCP connection on the wl-tunnel-port ,
or from a UDP message on the wl-udp-rxport .

Only one CLI session on the network (802.11) interface may be bridged with a CLI
session on the serial interface.
8.1.1 Bridging from the Serial Interface
The CLI Session on the serial interface may initiate a data bridge via the use of
the
serial-default parameter set to “pass” or by manually issuing the
pass CLI command. Prior to esta blishing the data bridge, the Airborne™ WLN
Module must be properly configured to connect to a server on the network that
will accept the communications. The following examples illustrate how to
configure the Module to initiate a connection to a TCP server: