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AirWorks AWK-3121 User’s Manual

References

6-4

STP and RSTP

The STP/RSTP Concept

Spanning Tree Protocol

(STP) was designed to help reduce link failures in a network, and

provide protection from loops. Networks that have a complicated architecture are prone to
broadcast storms caused by unintended loops in the network. The STP protocol is part of the
IEEE802.1D standard, 1998 Edition bridge specification.

Rapid Spanning Tree Protocol

(RSTP) implements the Spanning Tree Algorithm and Protocol

defined by IEEE802.1w-2001 standard. RSTP provides the following benefits:

y

The topology of a bridged network will be determined much more quickly compared to STP.

y

RSTP is backward compatible with STP, making it relatively easy to deploy. For example:

Defaults to sending 802.1D-style BPDUs if packets with this format are received.

STP (802.1D) and RSTP (802.1w) can operate on the LAN ports and WLAN ports (AP
and WDS1-WDS8) of the same AWK-3121.

This feature is particularly helpful when the AWK-3121 connects to older equipment, such as
legacy switches.

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. The main benefit of RSTP is that the configuration decision is made locally rather than
network-wide, allowing RSTP to carry out automatic configuration and restore a link faster than
STP.

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Summary of Contents for AirWorks AWK-3121

Page 1: ...Moxa AirWorks AWK 3121 User s Manual Third Edition July 2009 www moxa com product 2009 Moxa Inc All rights reserved Reproduction without permission is prohibited ...

Page 2: ...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 t...

Page 3: ...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 Warning Settings 3 35 System Log 3 35 S...

Page 4: ...e 8 1 VT100 5 2 Configuration by Telnet and SSH Consoles 5 4 Configuration by Web Browser with HTTPS SSL 5 5 Disabling Telnet 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 Threshold 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 Manu...

Page 5: ...e 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 LED Indicators Beeper Reset Button Relay Digital Output ...

Page 6: ... 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 ...

Page 7: ...tocol 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 ...

Page 8: ... 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 ...

Page 9: ...ck 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 as...

Page 10: ...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 rela...

Page 11: ...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 ...

Page 12: ...first time and quickly 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 Configuration Communication Testing Function Guiding Map ...

Page 13: ...e 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 should set the IP address of the computer to 192 168 127 xxx NOTE After you select Maintenance Æ Load Factory Defau...

Page 14: ... 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 tes...

Page 15: ...ed 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 respo...

Page 16: ...ess 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 t...

Page 17: ... 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 ...

Page 18: ... 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 w...

Page 19: ...ck 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 country 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 versio...

Page 20: ...ge 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 ...

Page 21: ... 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 r...

Page 22: ...ting 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 that connects the LAN to an outside network None Primary Secondary DNS server Setting D...

Page 23: ...ill 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 update 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 Descrip...

Page 24: ...ng 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 forward the clock should be advanced Time server 1 2 Setting Description Factory Default The 1st 2nd time server ...

Page 25: ...ireless 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 supported in WDS To establish a static bridge link based on the WDS the APs at both end of the W...

Page 26: ...ibed 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 ...

Page 27: ...he 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 IEEE80...

Page 28: ...3121 JP for Japanese frequency bands only connects SSID hidden APs in all IEEE802 11a channels and IEEE802 11g channel 1 to 11 The AWK 3121 EU for European frequency bands only connects SSID hidden APs in all IEEE802 11b g channels WDS for AP mode only Setting Description Factory Default Enable Disable AWK 3121 supports WDS or not Disable NOTE When WDS is enabled you can choose to use a pure point...

Page 29: ...r key to generate keys that actually encrypt outgoing packets and decrypt incoming packets y WPA WPA2 Enterprise also called WPA WPA2 EAP Extensible Authentication Protocol In addition to device based authentication WPA WPA2 Enterprise enables user based authentication via IEEE802 1X The AWK 3121 can support three EAP methods EAP TLS EAP TTLS and EAP PEAP Security mode Setting Description Factory ...

Page 30: ...pting traffic from the AP side to the wireless client side All 4 WEP keys are used as receive keys to decrypt traffic from the wireless client side to the AP side The WEP key can be presented in two Key type HEX and ASCII Each ASCII character has 8 bits so a 40 bit or 64 bit WEP key contains 5 characters and a 104 bit or 128 bit key has 13 characters In hex each character uses 4 bits so a 40 bit k...

Page 31: ... session is secured Even though AES encryption is only included in the WPA2 standard it is widely available in the WPA security mode of some wireless APs and clients as well The AWK 3121 also supports AES algorithms in WPA and WPA2 for better compatibility Personal versions of WPA WPA2 also know as WPA WPA PSK Pre Shared Key provides a simple way of encrypting a wireless connection for high confid...

Page 32: ...rase Setting Description Factory Default 8 63 characters Master key to generate keys for encryption and decryption None Key renewal for AP mode only Setting Description Factory Default 60 86400 seconds 1 minute to 1 year Specifies the time period of group key renewal 3600 seconds NOTE The value for key renewal instructs the wireless AP how often it should change the encryption keys Usually the sec...

Page 33: ...n in a large scaled network It is not necessary to exchange keys or passphrases WPA type Setting Description Factory Default Personal Provides Pre Shared Key enabled WPA and WPA2 Enterprise Provides enterprise level security for WPA and WPA2 Personal Encryption method Setting Description Factory Default TKIP Temporal Key Integrity Protocol is enabled AES Advance Encryption System is enabled Mixed ...

Page 34: ...pecifies the time period of group key renewal 3600 seconds WPA WPA2 Enterprise for Client mode In a client role the AWK 3121 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 Encryption method Setting Description Factory Default TKIP Temporal Key Integrity Protocol is enabled AES Advance Encryption System is ena...

Page 35: ...s expired EAP TTLS It is usually much easier to re use existing authentication systems such as a Windows domain or Active Directory LDAP directory or Kerberos realm rather than creating a parallel authentication system As a result TTLS Tunneled TLS and PEAP Protected EAP are used to support the use of so called legacy authentication methods TTLS and PEAP work in a similar way First they establish ...

Page 36: ...is with the network administrator before you enable identity hiding in TTLS and PEAP TTL Inner Authentication Setting Description Factory Default 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 MS CHAP V2 Anonymous Setting Description Factory Default Max 31 characters A ...

Page 37: ...start a second EAP exchange inside of the tunnel The AWK 3121 provides MS CHAP V2 merely as an EAP method for inner authentication Inner EAP protocol Setting Description Factory Default MS CHAP V2 Microsoft CHAP version 2 is used MS CHAP V2 Anonymous Setting Description Factory Default Max 31 characters A distinct name used for outer authentication None User name Password Setting Description Facto...

Page 38: ...scription Factory Default Auto Specifies wireless signal coverage by automatically selecting the strength of Tx power Full Equivalent to 100 of maximum Tx power High Equivalent to 75 of maximum Tx power Medium Equivalent to 50 of maximum Tx power Low Equivalent to 25 of maximum Tx power Full Beacon Interval for AP mode only Setting Description Factory Default Beacon Interval 40 1000 ms This value ...

Page 39: ...roperly you can better tune the performance of your wireless network Transmission distance Setting Description Factory Default Distance or max range for transmission 500 10000m The distance specifies the transmission distance or max range between two AWK devices This parameter should be set properly especially for long distance communication 500 Transmission enhancement Setting Description Factory...

Page 40: ...bled Only MAIN antenna is in use AUX Diversity function is disabled Only AUX antenna is in use Auto EAPOL Version Setting Description Factory Default 1 EAPOL version 1 was standardized in the 2001 version of 802 1X which is much more commonly implemented 2 EAPOL version 2 was specified in 802 1X 2004 1 Turbo Roaming for Client mode only Setting Description Factory Default Enable Disable Moxa s Tur...

Page 41: ... Certificate issued by shows the certificate issuer Certificate expiration date indicates when the certificate has expired 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 ...

Page 42: ...guration Protocol is a networking protocol that allows administrators to assign temporary IP addresses to network computers by leasing an IP address to a user for a limited amount of time instead of assigning permanent IP addresses The AWK 3121 can act as a simplified DHCP server and easily assign IP addresses to your wireless clients by responding to the DHCP requests from the client ends The IP ...

Page 43: ...condary DNS server Setting Description Factory Default IP address of Primary Secondary DNS server The IP address of the DNS Server used by your network After entering the DNS Server s IP address you can use URL as well The Secondary DNS server will be used if the Primary DNS server fails to connect None Start IP address Setting Description Factory Default IP address Indicates the IP address which ...

Page 44: ...ides 8 entities for setting MAC addresses in your filtering policy Remember to check the Active check box for each entity to activate the setting Enable Setting Description Factory Default Enable Enables MAC filter Disable Disables MAC filter Disable Policy Setting Description Factory Default Accept Only the packets fitting the entities on list can be allowed Drop Any packet fitting the entities o...

Page 45: ...t or drop For example IP address 192 168 1 1 and netmask 255 255 255 255 refers to the sole IP address 192 168 1 1 IP address 192 168 1 1 and netmask 255 255 255 0 refers to the range of IP addresses from 192 168 1 1 to 192 168 255 Remember to check the Active check box for each entity to activate the setting Enable Setting Description Factory Default Enable Enables IP protocol filter Disable Disa...

Page 46: ...f course the end port cannot be larger then the start port The Application name is a text string that describes the corresponding entity with up to 31 characters Remember to check the Active check box for each entity to activate the setting Enable Setting Description Factory Default Enable Enables TCP UDP port filter Disable Disables TCP UDP port filter Disable Policy Setting Description Factory D...

Page 47: ...upport STP RSTP in AP mode including WDS only The following figures indicate which Spanning Tree Protocol parameters can be configured A more detailed explanation of each parameter is given below the figure RSTP status This field will appear only when selected to operate STP RSTP It indicates whether this AWK 3121 is the Root of the Spanning Tree the root is determined automatically or not Bridge ...

Page 48: ...n the Spanning Tree topology Disable unchecked Port priority Setting Description Factory Default Numerical value selected by user Increase this port s priority as a node on the Spanning Tree topology by inputting a lower number 128 Port cost Setting Description Factory Default Enable Disable Input a higher cost to indicate that this port is less suitable as a node for the Spanning Tree topology 20...

Page 49: ...des and security levels supported by the AWK 3121 are shown in the following table Select the security mode and level that will be used to communicate between the SNMP agent and manager Protocol Version Setting on UI web page Authentication Type Data Encryption Method V1 V2c Read Community Community string No Use a community string match for authentication SNMP V1 V2c V1 V2c Write Read Community C...

Page 50: ...ring match with a maximum of 31 characters for authentication This means that the SNMP agent can access all objects with read only permissions using this community string public Write community for V1 V2c Setting Description Factory Default V1 V2c Read Write Community Use a community string match with a maximum of 31 characters for authentication This means that the SNMP agent can accesses all obj...

Page 51: ...alue It is fixed 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 Even when system administrators are out of the control room for an extended per...

Page 52: ...e AWK 3121 is disassociated from an AP Config related events Event is triggered when Configuration Changed A configuration item has been changed Configuration file import via Web Console The configuration file is imported to the AWK 3121 Console authentication failure An incorrect password is entered Firmware upgraded The AWK 3121 s firmware is updated Power events Event is triggered when Power 1 ...

Page 53: ...nts is shown in the following table You can check the box for Enable log to enable the grouped events All default values are enabled checked Details for each event group can be found on the System log Event Types table on page 3 31 Syslog Server Settings You can configure the parameters for your Syslog servers in this page Syslog server 1 2 3 Setting Description Factory Default IP address Enter th...

Page 54: ... on the System log Event Types table on page 3 31 E mail Server Settings You can set up to 4 e mail addresses to receive alarm emails from the AWK 3121 The following parameters can be configured on the E mail Server Settings page In addition a Send Test Mail button can be used to test whether the Mail server and e mail addresses work well More detailed explanations about these parameters are given...

Page 55: ...racters Enter the receivers e mail addresses None Relay The AWK 3121 has one relay output which consists of 2 terminal block contacts on the AWK 3121 s top panel These relay contacts are used to indicate user configured events and system failure 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 ...

Page 56: ...o poll or send requests to query every object on every device It would be better if the managed device agent could notify the management station by sending a message known as a trap for the event Trap Event Types SNMP Trap Receiver Settings SNMP traps are defined in SMIv1 MIBs SNMPv1 and SMIv2 MIBs SNMPv2c The two styles are basically equivalent and it is possible to convert between the two You ca...

Page 57: ... authentication alert Status Associated Client List for AP mode only Associated Client List shows all the clients that are currently associated to a particular AWK 3121 You can click Select all to select all the content in the list for further editing You can click Refresh to refresh the list DHCP Client List for AP mode only The DHCP Client List shows all the clients that require and have success...

Page 58: ...se 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 If an event is triggered it will be noted on this list System administrators can click Acknowledge Event when he has acknowledged the event and addre...

Page 59: ...o 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 11 info may not show up due to different operation modes As a result Current BSSID and Signal strength are not available in AP mode It is helpful to use the continuously updated information on this page such as Signa...

Page 60: ...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 By inputting a node s IP address in the Destination field you can use the ping command to make sure it exists and whether or not the access path is available If the node and access path are available you will see that all packets were su...

Page 61: ...t itself When upgrading your firmware the AWK 3121 s other functions are forbidden ATTENTION Please make sure the power source is stable when you upgrade your firmware An unexpected power breakup may damage your AWK 3121 Config Import Export You can back up or restore the AWK 3121 s configuration with Config Import Export In the Config Import section click Browse to specify the configuration file ...

Page 62: ...sword function Before you set up a new password you must input the current password and reenter the new password for confirmation For your security do not use the default password root and remember to change the administration password regularly Misc Settings Additional settings to help you manage your AWK 3121 are available on this page Reset button Setting Description Factory Default Always enab...

Page 63: ...all new changes must be saved to flash memory before restarting the AWK 3121 This also means the new changes will not work unless you run either the Save Configuration function or the Restart function 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 ...

Page 64: ...t button here will reboot the AWK 3121 directly and all setting changes will be ignored Clicking the Save and Restart button will apply all setting changes and then reboot the AWK 3121 If you run the Restart function without changing any configurations or saving all your changes you will see just one Restart button on your screen You will not be able to run any of the AWK 3121 s functions while th...

Page 65: ...4 4 Chapter 4 Software Installation Configuration In this chapter we cover the following topics Overview AWK Search Utility Installing AWK Search Utility Configuring AWK Search Utility ...

Page 66: ...CD includes AWK Search Utility to broadcast search for all AWK s accessible over the network the AWK 3121 User s Manual and Quick Installation Guide AWK Search Utility Installing AWK Search Utility 1 Click the INSTALL UTILITY button in the AWK Installation CD auto run window to install AWK Search Utility Once the program starts running click Yes to proceed 2 Click Next when the Welcome screen open...

Page 67: ...iguration 4 3 3 Click Next to install program files to the default directory or click Browse to select an alternate location 4 Click Next to create the program s shortcut files to the default directory or click Browse to select an alternate location ...

Page 68: ...ks AWK 3121 User s Manual Web Console Configuration 4 4 5 Click Next to select additional tasks 6 Click Next to proceed with the installation The installer then displays a summary of the installation options ...

Page 69: ...d to the same LAN as your computer After locating an AWK 3121 you will be able to change its IP address Since the Broadcast Search function searches by TCP packet and not IP address it doesn t matter if the AWK 3121 is configured as an AP or Client In either case APs and Clients connected to the LAN will be located regardless of whether or not they are part of the same subnet as the host 1 Start t...

Page 70: ... Configuration 4 6 2 Open the AWK Search Utility and then click the Search icon The Searching window indicates the progress of the search 3 When the search is complete all AWKs that were located will be displayed in the AWK Search Utility window ...

Page 71: ...lected device to beep Make sure your AWK is unlocked before using the search utility s icons setting The AWK will unlock automatically if the password is set to the default Otherwise you must enter the new password manually Go to Tools Æ AWK login Options to manage and unlock additional AWKs ...

Page 72: ...ld like to manage and then click Add Key in the password for the AWK device and then click OK to save If you return to the search page and search for the AWK again you will find that the AWK will unlock automatically ATTENTION For security purposes we suggest you can change the AWK search utility login password instead of using default ...

Page 73: ...ghlighted AWK click on the Web icon to open the web console This will take you to the web console where you can make all configuration changes Refer to Chapter 3 Using the Web Console for information on how to use the web console Click on Telnet if you would like to use telnet to configure your AWKs ...

Page 74: ...ick Assign IP to change the IP setting The three advanced options Search Connection and Miscellaneous are explained below Search Retry count default 5 Indicates how many times the search will be retried automatically Retry interval ms The time lapsed between retries ...

Page 75: ... Firmware and Unlock to complete Upgrade timeout secs Use this option to set the waiting time for the connection to disconnect while the firmware is upgrading Use this option to set the waiting time for the Firmware to write to flash Misc Search on start Checkmark this box if you would like the search function to start searching for devices after you log in to the AWK search Utility ...

Page 76: ...on method which requires using a short serial cable to connect the AWK 3121 to a PC s COM port can be used if you do not know the AWK 3121 s IP address The other consoles can be used to access the AWK 3121 over an Ethernet LAN or over the Internet In this chapter we cover the following topics RS 232 Console Configuration 115200 None 8 1 VT100 Configuration by Telnet and SSH Consoles Configuration ...

Page 77: ...lution NOTE We recommend using Moxa PComm Lite Terminal Emulator which can be downloaded free of charge from Moxa s website Before running PComm Terminal Emulator use an RJ45 to DB9 F or RJ45 to DB25 F cable to connect the AWK 3121 s RS 232 console port to your PC s COM port generally COM1 or COM2 depending on how your system is set up After installing PComm Terminal Emulator take the following st...

Page 78: ... 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 Log into the RS 232 console with the login name default admin and password default root if no new password is set ...

Page 79: ...again to resume operation Configuration by Telnet and SSH Consoles You may use Telnet or SSH client to access the AWK 3121 and manage the console over a network To access the AWK 3121 s functions over the network from a PC host that is connected to the same LAN as the AWK 3121 you need to make sure that the PC host and the AWK 3121 are on the same logical subnet To do this check your PC host s IP ...

Page 80: ...am ex putty exe and then input the AWK 3121 s IP address specifying 22 for the SSH connection port 2 The Console login screen will appear Please refer to the previous paragraph RS 232 Console Configuration and for login and administration Configuration by Web Browser with HTTPS SSL To secure your HTTP access the AWK 3121 supports HTTPS SSL encryption for all HTTP traffic Perform the following step...

Page 81: ...ecured 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 AWK 3121 s functions Disabling Telnet and Browser Access If you are connecting the AWK 3121 to a public network but do not intend to use its management functions over the network then we suggest disabling both Telnet Console and We...

Page 82: ...echnologies The information in this chapter can help you administer your AWK 3121s and plan your industrial wireless network better The following topics are covered Wireless Distribution System WDS Beacon DTIM Fragment RTS Threshold STP and RSTP The STP RSTP Concept Differences between RSTP and STP ...

Page 83: ...the notebook computers follow a reverse path from the Ethernet LAN through the APs to the notebook computers In this way AP 2 acts as an AP repeater By using WDS two or more LAN segments can be connected wirelessly As illustrated in the above figure a pair of wireless LAN to LAN bridges is used to connect two LAN segments Since the AP is WDS enabled it can be used as a wireless bridge It is a good...

Page 84: ...on frames It is used to indicate that broadcast and multicast frames buffered by the AP will be delivered shortly Lower settings result in more efficient networking while preventing your PC from dropping into power saving sleep mode Higher settings allow your PC to enter sleep mode thus saving power Fragment A lower setting means smaller packets which will create more packets for each transmission...

Page 85: ...or example Defaults to sending 802 1D style BPDUs if packets with this format are received STP 802 1D and RSTP 802 1w can operate on the LAN ports and WLAN ports AP and WDS1 WDS8 of the same AWK 3121 This feature is particularly helpful when the AWK 3121 connects to older equipment such as legacy switches Differences between RSTP and STP RSTP is similar to STP but includes additional information i...

Page 86: ... and product You can also learn how to contact Moxa for technical support The following topics are covered About This User s Manual DoC Declaration of Conformity Federal Communication Commission Interference Statement R TTE Compliance Statement Firmware Recovery Technical Support Contact Information ...

Page 87: ...K 3121 y Hardware Rev 1 1 y Firmware Ver 1 1 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 NOTE You can find out the hardware revision number of AWK 3121 on the side label The firmware version number can be seen on the Overview page as follow ...

Page 88: ...er s authority to operate this equipment This transmitter must not be co located or operated in conjunction with any other antenna or transmitter FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment This equipment should be installed and operated with a minimum distance of 20 cm between the radiator your body This dev...

Page 89: ...ance 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 It may result from some wrong operation or uncontrollable issues such as an unexpected shutdown during firmware update The AWK 3121 is designed to help administrators recover such damag...

Page 90: ...the firmware image via LAN and then enter the file name of the firmware to start the firmware recovery Technical Support Contact Information Customer satisfaction is our number one concern and to ensure that customers receive the full benefit of our products Moxa Internet Services has been set up to provide technical support driver updates product information certification status installation guid...

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