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.
Table of Contents Chapter 1 Introduction ..................................................................................................1-1 Overview.................................................................................................................................. 1-2 Package Checklist .................................................................................................................... 1-2 Product Features .....................................................................
Firmware Upgrade...................................................................................................... 3-40 Config Import Export ................................................................................................. 3-40 Load Factory Default.................................................................................................. 3-41 Password.....................................................................................................................
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.
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.
AirWorks AWK-4121 User’s Manual Introduction y IP67-rated metal housing Product Specifications WLAN Standards Spread Spectrum and Modulation (Typical) Operating Channels Security Protocol Data Rates Transmit Power Receiver Sensitivity Interface Antenna Connector DI/DO Connection Alarm Contact Digital Input 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 802.
AirWorks AWK-4121 User’s Manual Console LAN Port LED Indicators Introduction ‧ 10 to 48V for state “1” (ON) ‧ Max. input current: 8 mA RS-232 (RJ45 type) 10/100BaseT(X) auto negotiation speed 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.
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.
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.
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.
2 Chapter 2 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.
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).
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.
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 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. AWK-4121 IP: 192.168.
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.
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.
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.
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.
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.
AirWorks AWK-4121 User’s Manual Web Console Configuration Basic Settings The Basic Settings group includes the most commonly used settings required by administrators to maintain and control the AWK-4121. 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-4121s connected to your network.
AirWorks AWK-4121 User’s Manual Web Console Configuration 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 DHCP Static Description The AWK-4121’s IP address will be assigned automatically by the network’s DHCP server Set up the AWK-4121’s IP address manually.
AirWorks AWK-4121 User’s Manual Web Console Configuration Primary/ Secondary DNS server Setting Description IP address of Primary/ The IP address of the DNS Server used by your Secondary DNS server network. After entering the DNS Server’s IP address, you can input the AWK-4121’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.
AirWorks AWK-4121 User’s Manual Local time Setting User adjustable time Time zone Setting User selectable time zone Web Console Configuration Description The date and time parameters allow configuration of the local time with an interactive dialog box. Factory Default None (yyyy/mm/dd hh:mm:ss format; 24-hour format.) Description The time zone setting allows conversion from GMT (Greenwich Mean Time) to local time.
AirWorks AWK-4121 User’s Manual Web Console Configuration In either mode, the AWK-4121 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).
AirWorks AWK-4121 User’s Manual Operation mode Setting AP Client Web Console Configuration Description AWK-4121 plays a role of wireless AP/ Bridge. AWK-4121 plays a role of wireless AP Client. Factory Default AP 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.
AirWorks AWK-4121 User’s Manual Web Console Configuration RF type Setting A B G B/G Mixed Description Factory Default Supports IEEE802.11a standard only B/G Mixed Supports IEEE802.11b standard only Supports IEEE802.11g standard only Supports both of IEEE802.11b/g standards, but 802.11g can be slowed down when 802.11b clients are on the network Channel (for AP mode only) Setting Description Available channels vary AWK-4121 plays a role of wireless with RF type AP.
AirWorks AWK-4121 User’s Manual Web Console Configuration NOTE The AWK-4121 provides 8 entities for WDS settings and can support up to 8 WDS links to other APs or wireless bridges. The list appears when WDS Enable is checked. Enter the MAC address to set up a WDS link. Remember to activate a WDS link by checking the Active check box. WLAN Security Settings The AWK-4121 provides four standardized wireless security modes: Open, WEP (Wired Equivalent Privacy), WPA (Wi-Fi Protected Access) and WPA2.
AirWorks AWK-4121 User’s Manual Web Console Configuration Security mode Setting Open WEP WPA* WPA2* Description Factory Default No authentication Open Static WEP is used WPA is used Fully supports IEEE802.11i with “TKIP/AES + 802.1X” * WPA and WPA2 cannot be supported in WDS (Bridge) mode. Open For security reasons, it is highly recommended that the security mode should be set to the options other than Open System.
AirWorks AWK-4121 User’s Manual Authentication type Setting Open Shared Web Console Configuration Description Data encryption is enabled, but no authentication Data encryption and authentication are both enabled.
AirWorks AWK-4121 User’s Manual WPA type Setting Personal Enterprise Encryption method Setting TKIP AES Mixed* Passphrase Setting 8 – 63 characters Web Console Configuration Description Provides Pre-Shared Key-enabled WPA and WPA2 Provides enterprise-level security for WPA and WPA2 Factory Default Personal Description Temporal Key Integrity Protocol is enabled Advance Encryption System is enabled Provides for both TKIP and AES *This option is available in AP mode only.
AirWorks AWK-4121 User’s Manual Web Console Configuration WPA/WPA2-Enterprise (for AP mode) By selecting WPA type as Enterprise, you can use EAP (Extensible Authentication Protocol), a framework authentication protocol used by 802.1X to provide network authentication. In these Enterprise-level security modes, a back-end RADIUS (Remote Authentication Dial-In User Service) server is needed if IEEE 802.1X functionality is enabled in WPA /WPA2. The IEEE 802.
AirWorks AWK-4121 User’s Manual Key renewal Setting 60 – 86400 seconds (1 minute to 1 year) Web Console Configuration Description Specifies the time period of group key renewal Factory Default 3600 (seconds) WPA/WPA2-Enterprise (for Client mode) In a client role, the AWK-4121 can support three EAP methods (or EAP protocols): EAP-TLS, EAP-TTLS, and EAP-PEAP, corresponding to WPA/WPA-Enterprise settings on the AP side.
AirWorks AWK-4121 User’s Manual Web Console Configuration You can use Basic Wireless Settings → WLAN Certificate Settings to import your WLAN certificate and enable EAP-TLS on the client end. You can check the current certificate status in Current Status if it is available.
AirWorks AWK-4121 User’s Manual Web Console Configuration TTL Inner Authentication Setting Description PAP Password Authentication Protocol is used CHAP Challenge Handshake Authentication Protocol is used MS-CHAP Microsoft CHAP is used MS-CHAP-V2 Microsoft CHAP version 2 is used Anonymous Setting Max.
AirWorks AWK-4121 User’s Manual Inner EAP protocol Setting MS-CHAP-V2 Anonymous Setting Max.
AirWorks AWK-4121 User’s Manual Web Console Configuration Beacon Interval (for AP mode only) Setting Description Beacon Interval This value indicates the frequency (40-1000 ms) interval of the beacon Factory Default 100 (ms) DTIM Interval (for AP mode only) Setting Description Data Beacon Rate This value indicates how often the (1-16384) AWK-4121 sends out a Delivery Traffic Indication Message 1 Fragment threshold Setting Fragment Length (256-2346) RTS threshold Setting RTS/CTS Threshold (256-2346)
AirWorks AWK-4121 User’s Manual Web Console Configuration Certificate issued by: shows the certificate issuer Certificate expiration date: indicates when the certificate gets invalid You can import a new WLAN certificate in Import WLAN Certificate by following these steps in order: 1. Input the corresponding password (or key) in the Certificate private password field. Then click Submit to set the password. 2. You can see the password displayed in the Certificate private password field.
AirWorks AWK-4121 User’s Manual Web Console Configuration You can also assign a static IP address to a specific client by entering its MAC address. The AWK-4121 provides a Static DHCP mapping list with up to 16 entities. Be reminded to check the Active check box for each entity to activate the setting. You can check the IP assignment status under Status > DHCP Client List.
AirWorks AWK-4121 User’s Manual Start IP address Setting IP address Web Console Configuration Description Indicates the IP address which AWK-4121 can start assigning Factory Default None Maximum number of users Setting Description Factory Default 1 – 999 Specifies how many IP address can be None assigned continuously Client lease time Setting 1 – 10 days Description Factory Default The lease time for which an IP 10 (days) address is assigned.
AirWorks AWK-4121 User’s Manual Web Console Configuration ATTENTION Be careful when you enable the filter function: Drop + “no entity on list is activated” = all packets are allowed Accept + “no entity on list is activated” = all packets are denied IP Protocol Filter The AWK-4121’s IP protocol filter is a policy-based filter that can allow or filter out IP-based packets with specified IP protocol and source/destination IP addresses.
AirWorks AWK-4121 User’s Manual Web Console Configuration TCP/UDP Port Filter The AWK-4121’s TCP/UDP port filter is a policy-based filter that can allow or filter out TCP/UDP-based packets with a specified source or destination port. The AWK-4121 provides 8 entities for setting the range of source/destination ports of a specific protocol. In addition to selecting TCP or UDP protocol, you can set either the source port, destination port, or both.
AirWorks AWK-4121 User’s Manual Web Console Configuration RSTP Settings (for AP mode only) AWK-4121 supports IEEE802.1D Spanning Tree Protocol and IEEE802.1w Rapid STP standards. In addition to eliminating unexpected path looping, STP/RSTP can provide a backup path recovery if a wired/ wireless path fails accidentally. The reliability and availability can increase because this fail-over function. AWK-4121’s STP/RSTP feature is disabled by default.
AirWorks AWK-4121 User’s Manual Forwarding delay Setting Numerical value input by user (4 – 30 seconds) Web Console Configuration Description Factory Default The amount of time this device waits 15 (seconds) before checking to see if it should change to a different topology. Max. age Setting Numerical value input by user (6 – 40 seconds) Description Factory Default As a non-root role, if the device has 20 (seconds) not received a hello message from the root longer than Max.
AirWorks AWK-4121 User’s Manual Web Console Configuration Port Status Port Status indicates the current Spanning Tree status of this port. Use Forwarding for normal transmission, or Blocking to block transmission. SNMP Agent The AWK-4121 supports SNMP V1/V2c/V3. SNMP V1 and SNMP V2c use a community string match for authentication, which means that SNMP servers access all objects with read-only or read/write permissions using the community string public/private (default value).
AirWorks AWK-4121 User’s Manual Web Console Configuration Enable Setting Enable Disable Description Enables SNMP Agent Disables SNMP Agent Factory Default Disable Read community (for V1, V2c) Setting Description Factory Default V1, V2c Read Use a community string match with a public Community maximum of 31 characters for authentication. This means that the SNMP agent can access all objects with read-only permissions using this community string.
AirWorks AWK-4121 User’s Manual Web Console Configuration Auto Warning Settings Since industrial-grade devices are often located at the endpoints of a system, these devices will not always know what is happening elsewhere on the network. This means that these devices, including wireless APs or clients, must provide system maintainers with real-time alarm messages.
AirWorks AWK-4121 User’s Manual Web Console Configuration Power events Event is triggered when… Power 1/2 transition (On -> Off) The AWK-4121 is powered down in PWR1/2. PoE transition (On -> Off) The AWK-4121 is powered down in PoE. Power 1/2 transition (Off -> On) The AWK-4121 is powered via PWR1/2. PoE transition (Off -> On) The AWK-4121 is powered via PoE.
AirWorks AWK-4121 User’s Manual Syslog port Setting Port destination (1 to 65535) Web Console Configuration Description Enter the UDP port of the corresponding Syslog server Factory Default 514 E-mail E-mail Event Types Check the box for Active to enable the event items. All default values are deactivated (unchecked). Details for each event item can be found on the “System log Event Types” table on page 3-31.
AirWorks AWK-4121 User’s Manual Mail server (SMTP) Setting IP address User name & Password Setting From e-mail address Setting Max. 63 characters Web Console Configuration Description The IP address of your email server. None Description User name and password used in the SMTP server None Description Enter the administrator’s e-mail address which will be shown in the “From” field of a warning e-mail.
AirWorks AWK-4121 User’s Manual Web Console Configuration Trap Traps can be used to signal abnormal conditions (notifications) to a management station. This trap-driven notification can make your network more efficient. Because a management station usually takes care of a large number of devices that have a large number of objects, it will be overloading for the management station to poll or send requests to query every object on every device.
AirWorks AWK-4121 User’s Manual Web Console Configuration 1st / 2nd Trap server IP/name Setting Description IP address or host name Enter the IP address or name of the trap server used by your network. Factory Default None 1st / 2nd Trap community Setting Description Factory Default Max. 31 characters Use a community string match with a Alert maximum of 31 characters for authentication.
AirWorks AWK-4121 User’s Manual Web Console Configuration System Log Triggered events are recorded in System Log. You can export the log contents to an available viewer by clicking Export Log. You can use the Clear Log button to clear the log contents and the Refresh button to refresh the log. Relay Status The status of user-configurable events can be found under Relay Status. The status will refresh every 5 seconds if the Auto refresh box is checked.
AirWorks AWK-4121 User’s Manual Web Console Configuration DI and Power Status The status of power inputs and digital inputs is shown on this web page. The status will refresh every 5 seconds if the Auto refresh box is checked. Wireless Status The status for 802.11 info parameters, such as Operation mode and Channel, are shown on the Wireless Status page. The status will refresh every 5 seconds if the Auto refresh box is checked. Certain values for 802.
AirWorks AWK-4121 User’s Manual Web Console Configuration Console Settings You can enable or disable access permission for the following consoles: HTTP, HTTPS, Telnet and SSH connections. For more security, we recommend you only allow access to the two secured consoles, HTTPS and SSH. Ping Ping helps to diagnose the integrity of wired or wireless networks.
AirWorks AWK-4121 User’s Manual Web Console Configuration Firmware Upgrade The AWK-4121 can be enhanced with more value-added functions by installing firmware upgrades. The latest firmware is available at Moxa’s download center. Before running a firmware upgrade, make sure the AWK-4121 is off-line. Click the Browse button to specify the firmware image file and click Firmware Upgrade and Restart to start the firmware upgrade. After the progress bar reaches 100%, the AWK-4121 will reboot itself.
AirWorks AWK-4121 User’s Manual Web Console Configuration Load Factory Default Use this function to reset the AWK-4121 and roll all settings back to the factory default values. You can also reset the hardware by pressing the reset button on the top panel of the AWK-4121. Password You can change the administration password for each of the AWK-4121’s console managers by using the Password function.
AirWorks AWK-4121 User’s Manual Web Console Configuration After you click on Save Configuration in the left menu box, the following screen will appear. Click Save if you wish to update the configuration settings in the flash memory at this time. Alternatively, you may choose to run other functions and put off saving the configuration until later. However, the new setting changes will remain in the non-volatile memory until you save the configurations.
AirWorks AWK-4121 User’s Manual Web Console Configuration If you run the Restart function without changing any configurations or with all changes already saved, you will see just one Restart button on your screen. You will not be able to run any of the AWK-4121’s functions while the system is rebooting. Logout Logout helps users disconnect the current HTTP or HTTPS session and go to the Login page. For security reasons, we recommend you logout before quitting the console manager.
4 Chapter 4 Other Console Configurations This chapter explains how to access the AWK-4121 for the first time. In addition to HTTP access, there are four ways to access AWK-4121: serial console, Telnet console, SSH console, and HTTPS console. The serial console connection method, which requires using a short serial cable to connect the AWK-4121 to a PC’s COM port, can be used if you do not know the AWK-4121’s IP address.
AirWorks AWK-4121 User’s Manual Other Console Configurations ATTENTION 1. You CANNOT connect to the AWK-4121 by two ore more of these console configurations simultaneously. 2. You can connect to the AWK-4121 simultaneously by web browser and serial/ Telnet /SSH console. However, we strongly suggest that you do NOT use more than one connection method at the same time. Following this advice will allow you to maintain better control over the configuration of your AWK-4121.
AirWorks AWK-4121 User’s Manual Other Console Configurations 2. Select Open under Port Manager to open a new connection. 3. The Communication Parameter page of the Property window opens. Select the appropriate COM port for Console Connection, 115200 for Baud Rate, 8 for Data Bits, None for Parity, and 1 for Stop Bits. 4. Click on the Terminal tab, and select VT100 (or ANSI) for Terminal Type. Click on OK to continue. 5. The Console login screen will appear.
AirWorks AWK-4121 User’s Manual Other Console Configurations 6. The AWK-4121’s device information and Main Menu will be displayed. Please follow the description on screen and select the administration option you wish to perform. NOTE To modify the appearance of the PComm Terminal Emulator window, select Edit → Font and then choose the desired formatting options. ATTENTION If you unplug the RS-232 cable or trigger DTR, you will automatically be logged out for network security.
AirWorks AWK-4121 User’s Manual Other Console Configurations Follow the steps below to access the console utility via Telnet or SSH client. 1. From Windows Desktop, run Start → Run, and then use Telnet to access the AWK-4121’s IP address from the Windows Run window. (You may also issue the telnet command from the MS-DOS prompt.) When using SSH client (ex. PuTTY), please run the client program (ex. putty.exe) and then input the AWK-4121’s IP address, specifying 22 for the SSH connection port. 2.
AirWorks AWK-4121 User’s Manual Other Console Configurations 2. Warning messages will pop out to warn users that the security certificate was issued by a company they have not chosen to trust. 3. Select Yes to accept the certificate issued by Moxa IW and then enter the AWK-4121’s web browser interface secured via HTTPS/SSL. (You can see the protocol in URL is https.) Then you can use the menu tree on the left side of the window to open the function pages to access each of the AWK-4121’s functions.
AirWorks AWK-4121 User’s Manual Other Console Configurations Disabling Telnet and Browser Access If you are connecting the AWK-4121 to a public network but do not intend to use its management functions over the network, then we suggest disabling both Telnet Console and Web Configuration. Please run Maintenance → Console Settings to disable them, as shown in the following figure.
5 Chapter 5 References This chapter provides more detailed information about wireless-related technologies. The information in this chapter can help you administer your AWK-4121s and plan your industrial wireless network better.
AirWorks AWK-4121 User’s Manual References Wireless Distribution System (WDS) Traditionally, APs are connected via Ethernet LAN ports. By using a Wireless Distribution System (WDS), APs can communicate with one another wirelessly. For example, AP 2 acts as an access point for the notebook computers or other IEEE802.11-enabled clients, and forwards packets sent from the notebook computers to AP 1 through WDS. Then, AP 1 forwards the packets to the Ethernet LAN.
AirWorks AWK-4121 User’s Manual References It is a good idea to plan your wireless network by drawing a diagram so that you know how each AWK-4121 is connected to other peer APs or wireless bridges by WDS, and how bridges are connected to other peer bridges by WDS. See the following figure for an example of a network-planning diagram. ATTENTION Be sure to eliminate loops from networks that consist of wireless bridges, Ethernet switches, Ethernet links, and WDS links.
AirWorks AWK-4121 User’s Manual References Beacon A beacon is a packet broadcast by the AP to keep the network synchronized. A beacon includes the wireless LAN service area, the AP address, the Broadcast destination address, a time stamp, Delivery Traffic Indicator Maps (DTIM), and the Traffic Indicator Message (TIM). Beacon Interval indicates the frequency interval of AP. DTIM Delivery Traffic Indication Map (DTIM) is contained in beacon frames.
AirWorks AWK-4121 User’s Manual References Differences between RSTP and STP RSTP is similar to STP, but includes additional information in the BPDUs that allow each bridge to confirm that it has taken action to prevent loops from forming when it decides to enable a link to a neighboring bridge. Adjacent bridges connected via point-to-point links will be able to enable a link without waiting to ensure that all other bridges in the network have had time to react to the change.
6 Chapter 6 Supporting Information This chapter presents additional information about this manual and product. You can also learn how to contact Moxa for technical support.
AirWorks AWK-4121 User’s Manual Supporting Information About This User’s Manual This manual is mainly designed for, but no limited to, the following hardware and firmware for the AWK-4121: y Hardware Rev: 1.0 y Firmware Ver: 1.0 You are strongly recommended to visit Moxa’s website (http://www.moxa.com) and find the latest product datasheet, firmware, QIG (Quick Installation Guide), UM (User’s Manual) and related information.
AirWorks AWK-4121 User’s Manual Supporting Information DoC (Declaration of Conformity) Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
AirWorks AWK-4121 User’s Manual Supporting Information The ETSI version of this device is also authorized for use in EFTA member states Norway and Switzerland. EU Countries Not Intended for Use None. Potential Restrictive Use France: only channels 10, 11, 12, and 13. Firmware Recovery When the LEDs of FAULT, Signal Strength, CLIENT, BRIDGE and WLAN all light up simultaneously and blink at one-second interval, it means the system booting has failed.
AirWorks AWK-4121 User’s Manual Supporting Information The ETSI version of this device is also authorized for use in EFTA member states Norway and Switzerland. EU Countries Not Intended for Use None. Potential Restrictive Use France: only channels 10, 11, 12, and 13. Firmware Recovery When the LEDs of FAULT, Signal Strength, CLIENT, BRIDGE and WLAN all light up simultaneously and blink at one-second interval, it means the system booting has failed.
