Moxa Technologies AirWorks AWK-3121 User Manual

Moxa AirWorks AWK-3121

User’s Manual

Third Edition, July 2009

www.moxa.com/product

© 2009 Moxa Inc. All rights reserved.

Reproduction without permi ssion is pr ohibited.

Moxa AirWorks AWK-3121

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 permi ssion is pr ohibited.

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).................................................................................................. 1-6

Chapter 2 Getting Started.............................................................................................2-1

First-time Installation and Configuration................................................................................. 2-2

Communication Testing ...........................................................................................................2-3

Function Guiding Map............................................................................................................. 2-4

Chapter 3 Web Console Configuration........................................................................3-1

Configuration by W eb 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...................................................................................................................... 3-9

Basic Wireless Settings................................................................................................. 3-9

WLAN Security Settings............................................................................................ 3-13

Advanced Wireless Settings....................................................................................... 3-22

WLAN Certification Settings (for EAP-TLS in Client mode only)......................... 3-25

Advanced Settings ................................................................................................................. 3-26

DHCP Server (for AP mode only)............................................................................. 3-26

Packet Filters .............................................................................................................. 3-28

RSTP Settings (for AP mode only)........................................................................... 3-31

SNMP Agent .............................................................................................................. 3-33

Auto W arni ng Settings........................................................................................................... 3-35

System Log................................................................................................................. 3-35

Syslog......................................................................................................................... 3-37

E-mail......................................................................................................................... 3-38

Relay........................................................................................................................... 3-39

Trap ............................................................................................................................ 3-40

Status...................................................................................................................................... 3-41

Associated Client List (for AP mode only).................................................................3-41

DHCP Client List (for AP mode only)....................................................................... 3-41

System Log................................................................................................................. 3-42

Relay Status................................................................................................................ 3-42

DI and Power Status................................................................................................... 3-43

Wireless Status ........................................................................................................... 3-43

Maintenance........................................................................................................................... 3-44

Console Settings......................................................................................................... 3-44

Ping............................................................................................................................. 3-44

Firmware Upgrade ...................................................................................................... 3-45

Config Import Export ................................................................................................. 3-45

Load Factory Default.................................................................................................. 3-46

Password..................................................................................................................... 3-46

Misc. Settings............................................................................................................. 3-46

Save Configuration................................................................................................................ 3-47

Restart.................................................................................................................................... 3-48

Logout.................................................................................................................................... 3-48

Chapter 4 Software Installation/Configuration ...........................................................4-1

Overview.................................................................................................................................. 4-2

AWK Search Utility................................................................................................................. 4-2

Installing AWK Search Utility ..................................................................................... 4-2

Configuring AWK Search Utility................................................................................. 4-5

Chapter 5 Other Console Configurations....................................................................5-1

RS-232 Console Configuration (115200, None, 8, 1, VT100)................................................. 5-2

Configuration by Telnet and SSH Consoles............................................................................. 5-4

Configuration by Web Browser with HTTPS/SSL .................................................................. 5-5

Disabling T elnet and Browser Access...................................................................................... 5-6

Chapter 6 References....................................................................................................6-1

Wireless Distribution System (WDS)...................................................................................... 6-2

Beacon ..................................................................................................................................... 6-3

DTIM....................................................................................................................................... 6-3

Fragment.................................................................................................................................. 6-3

RTS T hreshold......................................................................................................................... 6-3

STP and RSTP......................................................................................................................... 6-4

The STP/RSTP Concept............................................................................................... 6-4

Differences between RSTP and STP............................................................................ 6-4

Chapter 7 Supporting Information ...............................................................................7-1

About This User’s Manual....................................................................................................... 7-2

DoC (Declaration of Conformity)............................................................................................ 7-3

Federal Communication Commission Interference Statement ..................................... 7-3

R&TTE Compliance Statement.................................................................................... 7-3

Firmware Recovery.................................................................................................................. 7-4

Technical Support Contact Information................................................................................... 7-5

1

1

Chapter 1 Introduction

Moxa AirWorks AWK-3121 enables wireless users to access network resources wirelessly. The
AWK-3121 is rated to operate at temperatures ranging from 0 to 60°C for standard models and -40
to 75°C for extended temperature models, 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

¾ LED Indicators
¾ Beeper
¾ Reset Button
¾ Relay (Digital Output)

AirWorks AWK-3121 User’s Manual Introduction

1-2

Overview

The AWK-3121 Access Point/Bridge and AP Client is ideal for applications that are hard to wire,
too expensive to wire, or use mobile equipment that connects to a TCP/IP network. The
AWK-3121 can operate at temp eratures ranging from 0 to 60°C for standard models and -40 to
75°C for extended temperature models, and is rugged enough for any harsh industrial environment.
Installation is easy, with either DIN-Rail mounting or wall mounting in distribution boxes. The
DIN-rail/wall mounting ability, wide operating temperature range, and IP30 housing with LED
indicators make the AWK-3121 a convenient yet reliable solution for any industrial wireless
application.

Package Checklist

Moxa’s AWK-3121 is shipped with the following items. If any of these items is missing or
damaged, please contact your customer service representative for assistance.

y 1 AWK-3121
y 2 Swivel-type Antennas (2dBi, RP-SMA, 2.4&5GHz)
y 1 Quick Installation Guide
y 1 Software CD
y 1 Moxa Product Warranty Booklet
y 1 Cable Holder with a Screw
y 2 Protective Caps

NOTE

The above items come with the AWK-3121 standard version. The package contents may vary for
different customized versions.

Product Features

y IEEE802.11a/b/g Compliant
y Three-in-one design (AP/Bridge/Client)
y Advanced Wireless Security:

¾ 64-bit and 128-bit WEP/WPA/WPA2
¾ SSID Hiding/IEEE 802.1X/RADIUS
¾ Packet access control & filtering

y STP/RSTP support for redundancy of system networking
y Long-distance transmission support
y Turbo Roaming

TM

enables rapid handover (Client m ode)

y Dedicated antenna selection
y Free firmware update for more advanced functions
y RS-232 console management
y 2DI+1DO for on-site monitor i ng and warming
y Operating temperature ranges from -40 to 75°C (-T model)
y Power input by redundant 24 VDC power inputs or IEEE802.3af Power over Ethernet

AirWorks AWK-3121 User’s Manual Introduction

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y DIN-Rail or wall mounting ability
y IP30 protected high-strength metal housi ng

Product Specifications

WLAN

Standards IEEE 802.11a/g/b for Wireless LAN

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

DSSS with DBPSK, DQPSK, CCK

OFDM with BPSK, QPSK, 16QAM, 64QAM
Operating Channels
(Central Frequency)

US: 2.412 to 2.462 GHz (11 channels)

5.18 to 5.24 GHz (4 channels)

EU: 2.412 to 2.472 GHz (13 channels)

5.18 to 5.24 GHz (4 channels)

JP: 2.412 to 2.472 GHz (13 channels, OFDM)

2.412 to 2.484 GHz (14 channels, DSSS)

5.18 to 5.24 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
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

Default Antenna 2dBi dual-band, Omni-directional antenna
Antenna Connector RP-SMA (female)
Connection 10-pin Removable Terminal Block

AirWorks AWK-3121 User’s Manual Introduction

1-4

Alarm Contact 1 relay output (capacity: 1A @24VDC)
Digital Input 2 electrically-isolated inputs

‧ +3 to -30V for state “0” (OFF)

‧ 13 to 30V for state “1” (ON)

‧ Max. input current: 8 mA

Console RS-232 (RJ45 type)
LAN Port 10/100BaseT(X) auto negotiation speed
LED Indicators PWR1, PWR2, PoE, FAULT, STATE, Signal Strength,

CLIENT MODE, BRIDGE MODE, WLAN, 10M, 100M

Power

Input Voltage 12 to 48 VDC, redundant dual DC power inp ut s or

48 VDC Power-over-Ethernet (IEEE 802.3af)
Input Current 0.494 to 0.121 A (@ 12 to 48 VDC)
Input Current (@ 24VDC) 0.3 A
Overload Current Protection 1.6 A
Reverse Polarity Protection Present

Mechanical

Dimensions 53.6 x 135 x 105 mm (2.11 x 5.31 x 4.13 in)
Weight 850 g
Installation DIN-rail, or Wall Mounting (with optional wall mounting kit)
Casing IP30 protection, aluminum case

Environment

Operating Temperature: Standard models: 0 to 60°C (32 to 140°F)

Wide Temp Models: -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*

Safety: EN60950-1, UL60950-1
Radio: EN300 328, EN301 893, ARIB STD-33/T66/T71 (Japan)
EMC: EN301 489-1/-17, FCC Part 15, EN55022/55024, IEC61000-6-2/-4
Environmental/EMC
compliancy

EN50155, EN50121-1/-4

* 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-3121 is NOT a portable mobile device and should be located at least 20 cm away from
the human body.

The AWK-3121 is NOT designed for the general public. To deploy AWK-3121 units and establish
a wireless network safely, a well-trained technician is required for installation.

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1-5

Functional Design

LED Indicators

The LEDs on the front panel of the AWK-3121 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-3121

cannot retrieve the IP address from a DHCP server, the FAULT LED will blink at an interval of
one second.

The LEDs for SIGNAL are a signal strength indicator and they merely function in Client mode.
The following table is a summary for the wireless settings and LED displays. You can check the

status of the AWK-3121 by reading these LEDs. More information about “Basic Wireless
Settings” is presented in Chapter 3.

Basic Wireless Settings LEDs

Operation mode WDS CLIENT BRIDGE SIGNAL

Note

AP Disable off off - AP mode
AP Enable off

on

- Bridge mode: WDS is enabled

Client -

on

off 0 Client mode: no association

Client -

on

off 1

Client mode: associated, but poor
signal

Client -

on

off 2-5

Client mode: associated; signal is
fine

ATTENTION

When the LEDs for FAULT, SIGNAL, CLIENT, BRIDGE and WLAN all light up
simultaneously and blink at one-second interval, it means the system failed to boot. This may be
due to improper operation or uncontroll a bl e issues, such as an unexpected shutdown during
firmware update. To recover the firmware, refer to “Firmware Recovery” in Chapter 6.

AirWorks AWK-3121 User’s Manual Introduction

1-6

Beeper

The beeper signals that the system is ready with two short beeps.

Reset Button

The RESET button is located on the top panel of the AWK-3121. You can reboot the AWK-3121
or reset it to factory default settings by pressing the RESET button with a pointed object such as
an unfolded paper clip.

y System reboot: Hold the RESET button down for under 5 seconds and then release.
y Reset 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-3121.

Relay (Digital Output)

The AWK-3121 has one relay output, which consists of the 2 terminal block contacts on the top
panel, as shown below. These relay contacts are used to 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-3121 is not powered.

AirWorks AWK-3121 User’s Manual Introduction

1-7

The AWK-3121’s relay status is summarized as follows:

Power Status Event Relay

Off --- Open

Yes Open

On

No Short

2

2

Chapter 2 Getting Started

This chapter explains how to install Moxa’s AirWorks AWK-3121 for the first time, and quick ly
set up your wireless network and test whether the connection is running well. With the function
guide, you can find out the functions you need easily.

In this chapter, we cover the following topics:

 First-time Installation and

Confi

guration

 Communication Testing
 Function Guiding Map

AirWorks AWK-3121 User’s Manual Getting Started

2-2

First-time Installation and Configuration

Before installing the AWK-3121, make sure that 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-3121 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-3121 can be powered by DC power input or PoE (Power over Ethernet). The
AWK-3121 will use whichever power source you choo se.

Step 2: Connect the AWK-3121 to a notebook or PC.

Since the AWK-3121 supports MDI/MDI-X auto-sensing, you can use either a straight-through
cable or crossover cable to connect the AWK-3121 to a computer. If the LED indicator on the
AWK-3121’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-3121. Since the AWK-3121’s default IP address
is 192.168.127.253, and the subnet mask is 255.255.255.0, you shou ld set the IP address of the
computer to 192.168.127.xxx.

NOTE

After you select Maintenance Æ Load Factory Default and click the Submit button, the
AW K-3121 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 the AWK-3121

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:

AirWorks AWK-3121 User’s Manual Getting Started

2-3

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

After you click Submit to apply changes, you can see that the web page is refreshed, and the
string “(Update)” and a blinking reminder will be shown on the upper-right corner of web page,
as follow.

To make the changes effective, click Restart and then Save and Restart after you change the
settings. About 30 seconds are needed for the AWK-3121 to complete its restart process.

Step 5: Select the operation mode for the AWK-3121.
By default, the AWK-3121’s operation mode is set to AP. You can change the setting in Wireless

Settings Æ Basic Wireless Settings if you would like to use the Client mode instead. Detailed

information about configuring the AWK-3121’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-3121 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-3121 device, and use the second method if you are
using two or more AWK-3121s.

Testing Method for one AWK-3121

If you are only using one AWK-3121, you will need a second notebook computer equipped with a
WLAN card. Configure the WLAN card to connect to the AWK-3121 (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-3121.

AirWorks AWK-3121 User’s Manual Getting Started

2-4

After configuring the WLAN card, establish a wireless connection with the AWK-3121 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.

Testing Method for two or more AWK-3121s

If you have two or more AWK-3121s, you will need a second notebook computer (B) equipped
with an Ethernet port. Use the default settings for the first AWK-3121 connected to notebook A
and change the second or third AWK-3121 connected to notebook B to Client mode. Then,
configure the notebooks and AWK-3121s properly.

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 Guiding Map

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 guiding
map.

AirWorks AWK-3121 User’s Manual Getting Started

2-5

A quick overview of the AWK-3121’s status

Basic settings for administering the AWK-3121

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

Functions to maintain the AWK-3121 and diagnose
the network

On-demand functions to support the operations
of web-based console management

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-3121, 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

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3-2

Configuration by Web Browser

Moxa AWK-3121’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-3121’s management and monitoring functions from a PC host connected to the
same LAN as the AWK-3121, you must make sure that the PC host and the AWK-3121 are on
the same logical subnet. Similarly, if the AWK-3121 is configured for other VLAN settings, you
must make sure your PC host is on the management VLAN.

The Moxa AWK-3121’s default IP is 192.168.127.253.

Follow the steps below to access the AWK-3121’s web-based console management.

1. Open your web browser (ex. Internet Explorer) and type the AWK-3121’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.

You may need to wait a few moments for the web page download onto your computer. Please note
that the Model name and IP address of your AWK-312 are both shown on the title of the web page.
This information can help you identify multiple AWK-3121s.

AirWorks AWK-3121 User’s Manual Web Console Configuration

3-3

You can use the menu tree on the left side of the window to open the function pages to access each
of the AWK-3121’s functions.

In the following paragraphs, we will go through each of the AWK-3121’s management functions in
detail. You can also get a quick overview of these functions in the “Function Guiding Map” section
of Chapter 2.

NOTE

The model name of the AWK-3121 is shown as AWK-3121-XX where XX indicates the countr y
code. The country code represents the AWK-3121 version and which bandwidth it uses. We use
AWK-3121-US as an example in the following figures. The country code of model name on the
screen may vary if you are using a different version (band) AWK-3121.

NOTE

For security reasons, you will need to log back into the AWK-3121 after the 5-minute time-out.

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3-4

Overview

The Overview page summarizes the AWK-3121’s current status. The information is categorized
into several groups: System info, Device info and 802.11 info.

NOTE

The values for 802.11 info may not show up due to different operation modes. Therefore,
Current BSSID and Signal strength are not available in AP mode.

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3-5

Basic Settings

The Basic Settings group includes the most commonly used settings required by administrators to
maintain and control the AWK-3121.

System Info Settings

The System Info items, especially Device name and Device description, are displayed and
included on the Overview page, SNMP information, and alarm emails. Setting System Info items
makes it easier to identify the different AWK-3121s connected to you r network.

Device name

Setting Description Factory Default

Max. 31 Characters This option is useful for specifying

the role or application of different
AWK-3121 units.

AWK-3121_<Serial No. of
this AWK-3121>

Device location

Setting Description Factory Default

Max. 31 Characters To specify the location of different

AWK-3121 units.

None

Device description

Setting Description Factory Default

Max. 31 Characters Use this space to record more detailed

description of AWK-3121

None

Device name

Setting Description Factory Default

Max. 31 Characters To provide information about whom

to contact in order to resolve
problems. Use this space to record
contact information of the person
responsible for maintaining this
AWK-3121.

None

AirWorks AWK-3121 User’s Manual Web Console Configuration

3-6

Network Settings

The Network Settings configuration allows you to modify the usual TCP/IP network parameters.
An explanation of each configuration item is given below.

IP configuration

Setting Description Factory Default

DHCP The AWK-3121’s IP address will be

assigned automatically by the
network’ s DH C P server

Static Set up the AWK-3121’s IP address

manually.

Static

IP address

Setting Description Factory Default

AWK-3121’s IP address Identifies the AWK-3121 on a TCP/IP

network.

192.168.127.253

Subnet mask

Setting Description Factory Default

AWK-3121’s subnet
mask

Identifies the type of network to
which the AWK-3121 is connected
(e.g., 255.255.0.0 for a Class B
network, or 255.255.255.0 for a Class
C network).

255.255.255.0

Gateway

Setting Description Factory Default

AWK-3121’s default
gateway

The IP address of the router th at
connects the LAN to an outside
network.

None

Primary/ Secondary DNS server

Setting Description Factory Default

IP address of Prim ary/
Secondary DNS server

The IP address of the DNS Server used b y your
network. A ft er ent eri n g t he DNS Ser ver’s IP
address, you can input the AWK-3121’s URL
(e.g., http://ap11.abc.com) in your browser’s
address field instead of entering the IP address.
The Secondary DNS server will be used if the
Primary DNS server fails to connect.

None

AirWorks AWK-3121 User’s Manual Web Console Configuration

3-7

Time Settings

The AWK-3121 has a time calibration function based on information from an NTP server or user
specified Date and Time information. Functions such as Auto warning can add real-time
information to the message.

Current local time shows the AWK-3121’s system time when you open this web page. You can
click on the Set Time button to activate the update after setting up the date and time parameters.
An “(Updated)” string will appear to indicate that the change is complete. Local time settings will
be immediately activated in the system without running Save and Restart.

NOTE

The AWK-3121 has a real time clock (RTC). Users are strongly recommended to upd ate the
Local time for the AWK-3121 after initial setup or long-term shutdown, especially when the
network does not have an Internet connection for accessing the NTP server or there is no NTP
server on the LAN.

Current local time

Setting Description Factory Default

User adjustable time The date and time parameters allow

configuration of the local time with
immediate activation.

None
(yyyy/mm/dd hh:mm:ss
format; 24-hour format.)

Tim e zone

Setting Description Factory Default

User selectable time
zone

The time zone setting allows
conversion from GMT (Greenwich
Mean Time) to local time.

GMT (Greenwich Mean
Time)

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ATTENTION

Changing the time zone will automatically adjust the Current local time. You should configure
the Time zone before setting the Current local time.

Daylight saving time

Setting Description Factory Default

Enable/ Disable Daylight saving time (also know as

DST or summer time) involves
advancing clocks (usually 1 hour)
during the summer time to provide an
extra hour of daylight in the
afternoon.

Disable

When Daylight saving time is enabled, the following parameters can be shown:

y The Starts at parameter allows users to enter the date that daylight saving time begins.
y The Stops at parameter allows users to enter the date that daylight saving time ends.
y The Time offset parameter indicates how many hours forwar d t he cloc k sh ould be advanced.

Time server 1/ 2

Setting Description Factory Default

The 1st/ 2nd time server
IP/Name

IP or Domain address of NTP time
server. The 2nd time will be used if
the 1st NTP server fails to connect.

None

Query period

Setting Description Factory Default

Query period time
(1- 9999 seconds)

This parameter determines how often
the time is updated from the NTP
server.

600 (seconds)

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Wireless Settings

The essential settings for wireless networks are presented in this function group. Settings must be
properly set before establishing your wireless network.

Basic Wireless Settings

The AWK-3121 mainly supports two operational modes that have distinct roles in the wireless
network:

y AP/Bridge:

This mode provides both Access Point and Static LAN-to-LAN Bridging functionality. The
static LAN-to-LAN bridging function is supported through the Wireless Distribution System
(WDS).

y AP Client:

This mode is for Dynamic LAN-to-LAN Bridging or Device-to-LAN. The AP Client
automatically establishes bridge links with other APs.

In either mode, the AW K-3121 forwards packets between its Ethernet interface (LAN) and
wireless interface (WLAN) for wired hosts on the Ethernet side and wireless host(s) on the
wireless side. There are two types of wireless links as specified by the IEEE802.11 standard:

y STA-AP

This type of wireless link is established between an IEEE802.11 Station (STA) and an
IEEE802.11 Access Point (AP). An STA is usually a client computer (PC or PDA) with a
WLAN network interface card (NIC). The Client mode is actually an STA.

y WDS

This type of wireless link is established between two IEEE802.11 APs. Wireless packets
transmitted along the WDS link comply with the IEEE802.11 WDS (Wireless Distribution
System) format at the link layer. You can refer to “Wireless Distribution System (WDS)” in
Chapter 5 for more details. Be reminded that WPA/WPA2 CANNOT be supp ort ed in WDS.

To establish a static bridge link based on the WDS, the APs at both end of the WDS link must be
configured manually with each other's MAC addresses. To establish a dynamic bridge link
between an AP and a Client, both devices must be configured with the same, channel, and security
settings (see “WLAN Security Settings”). Moreover, the same SSID is also needed if a client will
roam along the APs in Bridge mode. The AP Client automatically scans for any AP that is using
the matched SSID and establishes a bridge link with the scanned AP.

When the AWK-3121 is configured to be in Client mode, it can be used as an Ethernet-to-wireless
(or LAN-to-WLAN) network adapter. For example, a notebook computer equipped with an
Ethernet adapter, but n o wirel e ss card, can be connected to this device with an Ethernet cable for
wireless connectivity to another AP.

NOTE

Although it is more convenient to use dynamic bridging, there is a limitation — the AP Client
can only transmit IP-based packets between its wireless interface (WLAN) and Ethernet interface
(LAN); other types of traffic (such as IPX and AppleTalk) are not forwarded.

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The following figure shows the Basic Wireless Settings page. The parameters and options are
described as follow:

Wireless enable

Setting Description Factory Default

Enable/Disable The RF (Radio Frequency) module

can be manually turned on or off.

This function can be available in AP
operation mode only.

Enable

Operation mode

Setting Description Factory Default

AP AWK-3121 plays a role of wireless

AP/ Bridge.

Client AWK-3121 plays a role of wireless

AP Client.

AP

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NOTE

When you switch to Client mode, you can find an additional Site Survey button on this page. It
can support site survey and pop up a dialog box listing the information of available APs, as
shown in the following figure. You can click on the SSID of an entity and bring the value of its
SSID onto the SSID field of the Basic Wireless Settings page. Clicking on the Refresh button
will re-scan and update the table.

NOTE

If the Gateway field in Basic Settings Æ Network Settings is empty, a warning message will
appear, reminding you to set the default gateway when Client mode is enabled. You can ignore
this message if you are only planning a local network and no packet will be sent outside the
network.

RF type

Setting Description Factory Default

A Supports IEEE802.11a standard only
B Supports IEEE802.11b standard only
G Supports IEEE802.11g standard only
B/G Mixed Supports both of IEEE802.11b/g

standards, but 802.11g can be slowed
down when 802.11b clients are on the
network

B/G Mixed