Moxa Technologies AWK-4121 User manual

Moxa AirWorks AWK-4121
User’s Manual
First Edition, January 2009
www.moxa.com/product
©2009 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

Moxa AirWorks AWK-4121
User’s Manual
The Moxa software described in this manual is furnished under a license agreement and may be used only in
accordance with the terms of that agreement.
Copyright Notice
Copyright ©2009 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
MOXA is a registered trademark of Moxa Inc.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment on the
part of Moxa.
Moxa provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this
manual, or to the products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa assumes no
responsibility for its use, or for any infringements on the rights of third parties that may result from its use.
This product might include unintentional technical or typographical errors. Changes are periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the
publication.
Technical Support Contact Information
www.moxa.com/support
Moxa Americas:
Toll-free: 1-888-669-2872
Tel: [phone]
Fax: [phone]
Moxa China (Shanghai office):
Toll-free: 800-820-5036
Tel: [phone]
Fax: [phone]
Moxa Europe:
Tel: [phone]
Fax: [phone]
Moxa Asia-Pacific:
Tel: [phone]
Fax: [phone]

Table of Contents
Chapter 1 Introduction..................................................................................................1-1
Overview.................................................................................................................................. 1-2
Package Checklist .................................................................................................................... 1-2
Product Features ...................................................................................................................... 1-2
Product Specifications ............................................................................................................. 1-3
Functional Design .................................................................................................................... 1-5
LED Indicators ............................................................................................................. 1-5
Beeper........................................................................................................................... 1-6
Reset Button ................................................................................................................. 1-6
Relay (Digital Output) .................................................................................................. 1-7
Chapter 2 Getting Started.............................................................................................2-1
First-time Installation and Configuration................................................................................. 2-2
Communication Testing ........................................................................................................... 2-3
Function Guide ........................................................................................................................ 2-4
Chapter 3 Web Console Configuration........................................................................3-1
Configuration by Web Browser ............................................................................................... 3-2
Overview.................................................................................................................................. 3-4
Basic Settings........................................................................................................................... 3-5
System Info Settings..................................................................................................... 3-5
Network Settings .......................................................................................................... 3-6
Time Settings................................................................................................................ 3-7
Wireless Settings...................................................................................................................... 3-8
Basic Wireless Settings................................................................................................. 3-8
WLAN Security Settings ............................................................................................ 3-12
Advanced Wireless Settings ....................................................................................... 3-20
WLAN Certification Settings (for EAP-TLS in Client mode only)......................... 3-21
Advanced Settings ................................................................................................................. 3-22
DHCP Server (for AP mode only)............................................................................. 3-22
Packet Filters .............................................................................................................. 3-24
RSTP Settings (for AP mode only)........................................................................... 3-27
SNMP Agent .............................................................................................................. 3-29
Auto Warning Settings ........................................................................................................... 3-31
System Log................................................................................................................. 3-31
Syslog ......................................................................................................................... 3-32
E-mail ......................................................................................................................... 3-33
Relay........................................................................................................................... 3-34
Trap ............................................................................................................................ 3-35
Status...................................................................................................................................... 3-36
Associated Client List (for AP mode only)................................................................. 3-36
DHCP Client List (for AP mode only) ....................................................................... 3-36
System Log................................................................................................................. 3-37
Relay Status ................................................................................................................ 3-37
DI and Power Status ................................................................................................... 3-38
Wireless Status ........................................................................................................... 3-38
Maintenance........................................................................................................................... 3-38
Console Settings ......................................................................................................... 3-39
Ping............................................................................................................................. 3-39

Firmware Upgrade...................................................................................................... 3-40
Config Import Export ................................................................................................. 3-40
Load Factory Default.................................................................................................. 3-41
Password..................................................................................................................... 3-41
Save Configuration ................................................................................................................ 3-41
Restart .................................................................................................................................... 3-42
Logout.................................................................................................................................... 3-43
Chapter 4 Other Console Configurations....................................................................4-1
RS-232 Console Configuration (115200, None, 8, 1, VT100)................................................. 4-2
Configuration by Telnet and SSH Consoles............................................................................. 4-4
Configuration by Web Browser with HTTPS/SSL .................................................................. 4-5
Disabling Telnet and Browser Access...................................................................................... 4-7
Chapter 5 References....................................................................................................5-1
Wireless Distribution System (WDS) ...................................................................................... 5-2
Beacon ..................................................................................................................................... 5-4
DTIM ....................................................................................................................................... 5-4
Fragment .................................................................................................................................. 5-4
RTS Threshold ......................................................................................................................... 5-4
STP and RSTP ......................................................................................................................... 5-4
The STP/RSTP Concept ............................................................................................... 5-4
Differences between RSTP and STP ............................................................................ 5-5
Chapter 6 Supporting Information...............................................................................6-1
About This User’s Manual ....................................................................................................... 6-2
DoC (Declaration of Conformity)............................................................................................ 6-3
Federal Communication Commission Interference Statement ..................................... 6-3
R&TTE Compliance Statement.................................................................................... 6-3
Firmware Recovery.................................................................................................................. 6-4
Technical Support Contact Information................................................................................... 6-5

1
1
Chapter 1 Introduction
Moxa AirWorks AWK-4121 enables wireless access to network resources. The AWK-4121 is
rated to operate at temperatures ranging from -40 to 75°C and is rugged enough for any harsh
industrial environment.
In this chapter, we cover the following topics:
Overview
Package Checklist
Product Features
Product Specifications
Functional
¾LED Indicators
¾Beeper
¾Reset Button
¾Relay (Digital Output)

AirWorks AWK-4121 User’s Manual Introduction
Overview
The AWK-4121 outdoor wireless AP/bridge/client is an ideal 3-in-1 solution for industrial
applications that are hard to wire, too expensive to wire, or use mobile equipment that connect to a
TCP/IP network.
The AWK-4121 is rated to operate at temperatures ranging from -40 to 75°C, and its dust-tight and
weatherproof design is IP67-rated. An IP67 rating means the device is completely protected from
dust and is protected against the effects of immersion in water between 15cm and 1m in depth.
This means you can set up a WLAN or extend existing wired networks to outdoor locations and
still maintain a reliable connection. The AWK-4121 has two redundant DC power inputs for
increased reliability, can be powered via PoE, and is easy to deploy.
Package Checklist
Moxa’s AWK-4121 is shipped with the following items. If any of these items is missing or
damaged, please contact your customer service representative for assistance.
y1 AWK-4121
y2 Omni-directional antennas (5dBi, N-type male, 2.4 GHz)
y1 Quick Installation Guide
y1 Software CD
y1 Moxa Product Warranty Booklet
y1 Accessory Pack (including wall-mounting kit, screws and RJ45 field installable plug)
NOTE
The above items come with the AWK-4121 standard version. The package contents may vary in
different customized versions.
Product Features
yIEEE802.11a/b/g Compliant
yThree-in-one design (AP/Bridge/Client)
yAdvanced Wireless Security:
¾64-bit and 128-bit WEP/WPA/WPA2
¾SSID Hiding/IEEE 802.1X/RADIUS
¾Packet access control & filtering
ySTP/RSTP support for redundancy of system networking
yRS-232 console management
y2DI+1DO for on-site monitoring and warming
yFree firmware update for more advanced functions
yOperating temperature ranges from -40 to 75℃
yPower input by redundant 24 VDC power inputs or Power over Ethernet
yWall mounting ability
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AirWorks AWK-4121 User’s Manual Introduction
yIP67-rated metal housing
Product Specifications
WLAN
Standards IEEE 802.11a/g/b for Wireless LAN
IEEE 802.11i Wireless Security
IEEE 802.3u 10/100BaseT(X) for Ethernet LAN
EEE 802.3af for Power-over-Ethernet
IEEE 802.1D/w STP/RSTP
Spread Spectrum and
Modulation (Typical)
802.11b: DSSS with DBPSK, DQPSK, CCK
802.11g: OFDM with BPSK, QPSK, 16QAM, 64QAM
802.11a: OFDM with BPSK, QPSK, 16QAM, 64QAM
Operating Channels US: 2.412 to 2.462 GHz (11 channels)
5.15 to 5.25 GHz (4 channels)
EU: 2.412 to 2.472 GHz (13 channels)
5.15 to 5.25 GHz (4 channels)
JP: 2.412 to 2.472 GHz (13 channels, OFDM)
2.412 to 2.484 GHz (14 channels, CCK)
5.15 to 5.25 GHz (4 channels for W52)
Security 64-bit and 128-bit WEP encryption, WPA /WPA2
(IEEE 802.1X/ RADIUS, TKIP and AES)
Protocol General Protocols: Proxy ARP, DNS, HTTP, HTTPS, IP, ICMP,
SNTP, TCP, UDP, RADIUS, SNMP, RTP
AP-only Protocols: ARP, BOOTP, DHCP, dynamic VLAN-Tags
for 802.1X-Clients, STP/RSTP (IEEE 802.1D/w)
Data Rates 802.11b: 1, 2, 5.5, 11 Mbps
802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
Transmit Power 802.11b: 1 to 11 Mbps: Typ. 18±1.5 dBm
802.11g: 6 to 24 Mbps: Typ. 18±1.5 dBm
36 to 48 Mbps: Typ. 16±1.5 dBm
54 Mbps: Typ. 15±1.5 dBm
802.11a: 6 to 24 Mbps: Typ. 16±1.5 dBm
36 to 48 Mbps: Typ. 14±1.5 dBm
54 Mbps: Typ. 13±1.5 dBm≥17dBm
Receiver Sensitivity 802.11b: -92 dBm @ 1 Mbps, -90 dBm @ 2 Mbps,
-88 dBm @ 5.5 Mbps, -84dBm @ 11 Mbps
802.11g: -87 dBm @ 6 Mbps, -86 dBm @ 9 Mbps,
-85 dBm @ 12 Mbps, -82dBm @ 18 Mbps,
-80 dBm @ 24 Mbps, -76 dBm @ 36 Mbps,
-72dBm @ 48 Mbps, -70 dBm @ 54 Mbps
802.11a: -87 dBm @ 6 Mbps, -86 dBm @ 9 Mbps,
-85 dBm @ 12 Mbps, -82dBm @ 18 Mbps,
-80 dBm @ 24 Mbps, -76 dBm @ 36 Mbps,
-72dBm @ 48 Mbps, -70 dBm @ 54 Mbps
Interface
Antenna Connector N-type (female)
DI/DO Connection 8-pole M12 connector
Alarm Contact 1 relay output (capacity: 1A @24VDC)
Digital Input 2 electrically-isolated inputs
‧0 to 3.3V for state “0” (OFF)
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AirWorks AWK-4121 User’s Manual Introduction
‧10 to 48V for state “1” (ON)
‧Max. input current: 8 mA
Console RS-232 (RJ45 type)
LAN Port 10/100BaseT(X) auto negotiation speed
LED Indicators PWR, FAULT, STATE, WLAN and LAN
Power
Input Voltage 12 to 48 VDC, redundant dual DC power inputs or
48 VDC Power-over-Ethernet (IEEE 802.3af)
Input Current 0.494 to 0.121 A
Input Current (@ 24VDC) 0.3 A
Overload Current Protection 1.6 A
Reverse Polarity Protection Present
Mechanical
Dimensions 224 x 147.7 x 66.5 mm (8.82 x 5.82 x 2.62 in)
Weight 1.2 kg
Installation Wall Mounting or DIN-Rail (with optional wall mounting kit)
Casing IP67 protection, aluminum case
Environment
Operating Temperature: -40 to 75°C (-40 to 167°F)
Storage Temperature: -40 to 85ºC (-40 to 185ºF)
Ambient Relative Humidity 5 to 95% (non-condensing)
Regulatory Approvals*
Radio: EN300 328/ EN301 893/ EN301 489-1/-17
ARIB STD-33/T66/T71 (Japan)
EMI: FCC Part 15
* Please check Moxa’s website for the most up-to-date certification status.
Warranty 5 years
Details: See http://
www.moxa.com/warranty
ATTENTION
The AWK-4121 is NOT a portable mobile device and should be located at least 20cm away from
the human body.
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AirWorks AWK-4121 User’s Manual Introduction
Functional Design
LED Indicators
The LEDs on the front panel of AWK-4121 allow you to identity the status and wireless settings
quickly.
The LED for FAULT indicates the system failure and user-configured events. If the AWK-4121
cannot retrieve the IP address from a DHCP server, the FAULT LED will blink at an interval of
one second.
The following table is a summary for the wireless settings and LED displays. You can check the
status of the AWK-4121 by reading these LEDs. More information about “Basic Wireless
Settings” is presented in Chapter 3.
LED Color State Description
On Power is being supplied (from power input 1 or 2,
or PoE).
PWR Green
Off Power is not being supplied
On Relay is event-triggered.
Blink (slow) Cannot get an IP address from the DHCP server
(interval: 1 sec)
Blink (fast) IP address conflict (interval: 0.5 sec)
FAULT Red
Off Normal status
Green Software Ready
Green Blink The AWK Search Utility has located the AWK.
(interval: 1sec)
STATE Green/Red
Red Booting or Error condition
Green On WLAN functions in Client mode.
Green Blink WLAN’s data communication is run in Client
mode
Amber On WLAN functions in AP/Bridge mode.
Amber Blink WLAN’s data communication is run in AP/Bridge
mode
WLAN Green/Amber
Off WLAN is not in use or not working properly.
Yellow On LAN port’s 10Mbps link is active.
Yellow Blink Data is being transmitted at 10 Mbps
Yellow Off LAN port’s 10Mbps link is inactive.
Green On LAN port’s 100Mbps link is active.
Green Blink Data is being transmitted at 100 Mbps
LAN Yellow/ Green
Green Off LAN port’s 100Mbps link is inactive.
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AirWorks AWK-4121 User’s Manual Introduction
ATTENTION
When the LEDs for STATE (Green), FAULT, and WLAN all light up simultaneously and blink at
one-second intervals, it means the system failed to boot. This may be due to improper operation or
uncontrollable issues, such as an unexpected shutdown during firmware update. To recover the
firmware, refer to “Firmware Recovery” in Chapter 6.
Beeper
The beeper signals that the system is ready with two short beeps.
Reset Button
The RESET button is located on the bottom panel of the AWK-4121. You can reboot the
AWK-4121 or reset it to factory default settings by pressing the RESET button with a pointed
object such as an unfolded paper clip.
ySystem reboot: Hold the RESET button down for under 5 seconds and then release.
yReset to factory default: Hold the RESET button down for over 5 seconds until the STATE
LED starts blinking green. Release the button to reset the AWK-4121.
STEP 1: Remove the reset button cover. STEP 2: Using a pointed object, press and
hold the reset button.
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AirWorks AWK-4121 User’s Manual Introduction
Relay (Digital Output)
The AWK-4121 has one relay output, which consists of the 2 contacts for the 8-pin M12 connector
on the bottom panel, as shown below. These relay contacts forward system failure and
user-configured events.
The two wires attached to the relay contacts form an open circuit when a user-configured event is
triggered. If a user-configured event does not occur, the relay circuit will remain closed. For safety
reason, the relay circuit is kept open when the AWK-4121 is not powered.
The AWK-4121’s relay status is summarized as follows:
Relay Status Power off Power on
No Event CLOSED
Triggered OPEN OPEN
Digital Inputs and Relay-out Pin Assignment (8-pin M12 connector)
PIN 1 2 3 4 5 6 7 8
Function DOUT_I DOUT_O DI0+ DI0- DI1+ DI1- reserved reserved
1-7

2
2
Chapter2 Getting Started
This chapter explains how to install Moxa’s AirWorks AWK-4121 for the first time, quickly set up
your wireless network, and test whether the connection is running well. With the function guide,
you can easily locate the functions you need.
In this chapter, we cover the following topics:
First-time Installation and Configuration
Communication Testing
Function Guide

AirWorks AWK-4121 User’s Manual Getting Started
First-time Installation and Configuration
Before installing the AWK-4121, make sure all items in the Package Checklist are in the box. In
addition, you will need access to a notebook computer or PC equipped with an Ethernet port. The
AWK-4121 has a default IP address that you must use when connecting to the device for the first
time.
Step 1: Select the power source.
The AWK-4121 can be powered by DC power input or PoE (Power over Ethernet). The
AWK-4121 will use whichever power source you choose.
Step 2: Connect the AWK-4121 to a notebook or PC.
Since the AWK-4121 supports MDI/MDI-X auto-sensing, you can use either a straight-through
cable or crossover cable to connect the AWK-4121 to a computer. If the LED indicator on
AWK-4121’s LAN port lights up, it means the connection is established.
Step 3: Set up the computer’s IP address.
Set an IP address on the same subnet as the AWK-4121. Since the AWK-4121’s default IP address
is 192.168.127.253, and the subnet mask is 255.255.255.0, you should set the IP address of the
computer to 192.168.127.xxx.
NOTE
After you select Maintenance →Load Factory Default and click the Submit button, the
AWK-4121 will be reset to factory default settings and the IP address will be also reset to
192.168.127.253.
Step 4: Use the web-based manager to configure AWK-4121
Open your computer’s web browser and type http://192.168.127.253 in the address field to access
the homepage of the web-based Network Manager. Before the homepage opens, you will need to
enter the user name and password as shown in the following figure. For first-time configuration,
enter the default user name and password and then click on the Login button:
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AirWorks AWK-4121 User’s Manual Getting Started
NOTE
Default user name and password:
User Name: admin
Password: root
For security reasons, we strongly recommend changing the default password. To do so, select
Maintenance > Password, and then follow the on-screen instructions to change the password.
NOTE
Clicking Submit will apply your changes refresh the web page. The string “(Config Setting
Success)” and a blinking reminder will appear in the upper-right corner of web page, as follows.
To make the changes effective, click Restart and then Save and Restart after you change the
settings. It will take about 30 seconds for the AWK-4121 to restart.
Step 5: Select the operation mode for the AWK-4121.
By default, the AWK-4121’s operation mode is set to AP. You can change the setting in Wireless
Settings →Basic Wireless Settings if you would like to use the Client mode instead. Detailed
information about configuring the AWK-4121’s operation can be found in Chapter 3.
Step 6: Test communications.
We will describe 2 test methods to make sure the network connection has been established. Please
refer to the following section for more details.
Communication Testing
After installation, you can run a sample test to make sure the AWK-4121 and wireless connection
are functioning normally. Two testing methods are explained in the following sections. Use the
first method if you are using only one AWK-4121 device, and use the second method if you are
using two or more AWK-4121s.
Testing Method for one AWK-4121
If you are only using one AWK-4121, you will need a second notebook computer equipped with a
WLAN card. Configure the WLAN card to connect to the AWK-4121 (NOTE: the default SSID is
MOXA), and change the IP address of the second notebook (B) so that it is on the same subnet as
the first notebook (A), which is connected to the AWK-4121.
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AirWorks AWK-4121 User’s Manual Getting Started
After configuring the WLAN card, establish a wireless connection with the AWK-4121 and open a
DOS window on Notebook B. At the prompt, type
ping <IP address of notebook A>
and then press Enter (see the figure below). A “Reply from IP address …” response means the
communication was successful. A “Request timed out.” response means the communication failed.
In this case, recheck the configuration to make sure the connections are correct.
Notebook A
IP: 192.168.127.2
SSID: Moxa
PING
AWK-4121
IP: 192.168.127.253
Notebook B
IP: 192.168.127.1
Testing Method for two or more AWK-4121s
If you have two or more AWK-4121s, you will need a second notebook computer (B) equipped
with an Ethernet port. Use the default settings for the first AWK-4121 connected to notebook A
and change the second or third AWK-4121 connected to notebook B to Client mode. Then,
configure the notebooks and AWK-4121s properly.
AWK-4121 / Client
IP: 192.168.127.252 AWK-4121 / AP
IP:192.168.127.253
SSID: Moxa
Notebook A
IP: 192.168.127.2
PING
Notebook B
IP: 192.168.127.1
After setting up the testing environment, open a DOS window on notebook B. At the prompt, type
ping <IP address of notebook A>
and then press Enter. A “Reply from IP address …” response means the communication was
successful. A “Request timed out” response means the communication failed. In this case, recheck
the configuration to make sure the connections are correct.
Function Guide
The management functions are categorized in a tree and shown in the left field of the web-based
management console. You can efficiently locate the function you need with the following guide.
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AirWorks AWK-4121 User’s Manual Getting Started
A quick overview of the AWK-4121’s status
Basic settings for administering the AWK-4121
Essential settings related to establishing a wireless
network
Advanced features to support additional network
management and secure wired and wireless
communication
* These advanced functions are all optional.
Application-oriented device
management functions to set up
events, traps, and reactions via relay
warning, e-mail and SNMP
notification
* These functions are all optional.
Real-time status information to monitor
wired/wireless network performance, advanced
services, and device management functions
On-demand functions to support the operations
of web-based console management
Functions to maintain the AWK-4121 and diagnose
the network
2-5

3
3
Chapter 3 Web Console Configuration
In this chapter, we will explain each web management page of the web-based console
configuration. Moxa’s easy-to-use management functions will help you set up your AWK-4121, as
well as establish and maintain your wireless network easily.
In this chapter, we cover the following topics:
Configuration by Web Browser
Overview
Basic Settings
Wireless Settings
Advanced Settings
Auto Warning Setting
Status
Maintenance
Save Configuration
Restart
Logout

AirWorks AWK-4121 User’s Manual Web Console Configuration
Configuration by Web Browser
Moxa AWK-4121’s web browser interface provides a convenient way to modify its configuration
and access the built-in monitoring and network administration functions. The recommended web
browser is Microsoft®Internet Explorer 5.5 or 6.0 with JVM (Java Virtual Machine) installed.
NOTE
To use the AWK-4121’s management and monitoring functions from a PC host connected to the
same LAN as the AWK-4121, you must make sure that the PC host and AWK-4121 are on the
same logical subnet. Similarly, if the AWK-4121 is configured for other VLAN settings, you
must make sure your PC host is on the management VLAN.
The Moxa AWK-4121’s default IP address is 192.168.127.253.
Follow the steps below to access the AWK-4121’s web-based console management.
1. Open your web browser (ex. Internet Explorer) and type the AWK-4121’s IP address in the
address field. Then press Enter to establish the connection.
2. The Web Console Login page will open. Enter the password (User Name is set as admin; the
default password is root if a new password has not been set.) and then click Login to
continue.
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AirWorks AWK-4121 User’s Manual Web Console Configuration
You may need to wait a few moments for the web page to download onto your computer. Please
note that the model name and IP address of your AWK-312 are both shown in the title of the web
page. This information can help you identify multiple AWK-4121s.
You can use the menu tree on the left side of the window to open the function pages to access each
of AWK-4121’s functions.
In the following paragraphs, we will go through each of the AWK-4121’s management functions in
detail. You can also get a quick overview of these functions in the Function Guide section of
Chapter 2.
NOTE
The model name of the AWK-4121 is shown as AWK-4121-XX where XX indicates the country
code. The country code represents the AWK-4121 version and which bandwidth it uses. We use
AWK-4121-US as an example in the following figures. The country code for the model name on
your screen may vary if you are using a different version (band) AWK-4121.
3-3

AirWorks AWK-4121 User’s Manual Web Console Configuration
Overview
The Overview page summarizes the AWK-4121’s current status. The information is categorized
into several groups: System info, Device info and 802.11 info.
NOTE
Some values for 802.11 info may not show up due to different operation modes. For example
Current BSSID and RSSI are not available in AP mode.
3-4