www.elpro.com.au
245U-E Wireless Ethernet Modem User Manual
99
Rev Version 2.24
TX Failed due to too
many retries
This is the number of frames that have been lost. Original M 7 Retries
= 1 TX failed due to too many retires. Each retry is sent within a few msec.
TX Failed / TX Antenna Profile = Frame Packet Loss Rate (number undelivered as a
%).
RX Failed due to bad
CRC
This can be from any access point, not only your own. If there are other Wi-Fi
networks in the area, this number could be high due to other encryption keys
and weak signals.
RX Failed / RX Antenna Profile = RX Frame Error Rate (this can be high due to
other wireless devices in the area).
Broadcast Notes
When a broadcast message is sent from client to the access point, the access
point will always ACK the client. When a broadcast message is sent from the
access point to the client, no ACK is returned.
Management Frames
Management frames can be probes, authenticate/associate messages, RTS
messages, and beacons.
Network Traffic Analysis
There are many devices and PC programs that will analyze performance of an Ethernet network. Freely
available programs, such as Ethereal, provide a simple cost-effective means for more advanced analysis. By
monitoring traffic on the wired Ethernet, a better idea of regular traffic can be gained. Network analysis
programs make configuration of a filter for the 245U-E a simple task.
4.6 System Tools
The System Tools page has a number of tools that help maintain the module firmware and configuration.
Configuration Summary
This option is used to save all the different configuration pages onto one
page for easy viewing. The page can also be saved (using the File/Save As
function on the drop File Menu) for future reference and for emailing module
configuration details to ELPRO technical support in the event of a configuration
problem.
TCP Throughput Test
Performs a throughput test. For more information, see “4.4 Throughput Test.”
Radio Path Test
Performs a radio path test without the use of a laptop, and provides a visual
indication of RSSI and throughput on the front panel LEDs.
Read Configuration File
This option shows the module configuration in XML format. This file can be
saved for future reference.
Write Configuration
File
Any configuration XML files saved using Read Configuration File above can be
loaded back into the module using this option.
Firmware Upgrade
This option is used for firmware upgrades. Load the file using the Browse
button. When the file is found, click Send to load the file into the module.
When completed, click Reset. Firmware upgrades can be performed locally or
remotely via the radio.
