Home

Product Manual

1. Using the ECB as a Wireless Ethernet Bridge The 3Com ECB can be used as a wireless Ethernet bridge for connecting a wired unit such as a computer or Ethernet printer to your wireless network The ECB can act as a wireless Ethernet bridge in addition to performing any one of the serial port applications discussed in following chapters Complete the Basic Radio Configuration instructions described in Chapter 5 Configuration of Radio Settings Click Update And Reset Unit If needed move the ECB to the desired location Provide power to the ECB and connect it to the Ethernet device for which it will bridge Your 3Com ECB is now configured to act as a wireless Ethernet bridge to your Ethernet network component Configuring Network Settings Network Configuration Settings This chapter describes the network settings necessary to communicate with the ECB Communication directly with the ECB will allow the following a Using the serial port applications described in the following chapters m Performing a network ping of the ECB Remotely configuring the ECB via the Telnet protocol NOTE Bridging as discussed in Chapter 6 is communication between the wireless interface and the Ethernet interface Bridging does not communicate with the ECB and does not require setting the basic network parameters After completing the configuration of PC Card radio settings in Chapter 5 proceed with the following steps to configure the
2. shared with the flow control lines RTS DTR CTS and DSR but in this mode the ECB does not interpret them as flow control signals They give the ability to send digital data from one device to another without interpretation by the ECB units themselves When a ECB detects a change in one of its RTS or DTR lines it will cause the opposite ECB to immediately change the state of its corresponding CTS or DSR line to match li NOTE You cannot use hardware flow control on lines that have been enabled for I O Control TCP Pipe TCP Pipe like RMP Pipe makes no changes to the serial data stream TCP Pipe differs from RMP Pipe in that it creates two independent TCP IP network connections for transmitted and received data Using two connections allows each ECB to detect conditions when it has lost radio contact with the opposite unit as can occur in environments with mobile units Configuring TCP Pipe In this configuration each ECB unit simultaneously acts as a client and a server 1 Complete the Basic Radio settings as described in Chapter 5 li NOTE If you are replacing a serial line or serial network with two or more ECB units without using an access point be sure your radio is using ad hoc mode Complete the Network Configuration described in Chapter 7 Complete the General Serial Configuration described in Chapter 8 Click the Serial tab Select the Protocol tab Select TCP Pipe Figure 27 10 Serial Line Replacement Fig
3. 93 68 EEC Such marking is indicative that this equipment meets or exceeds the following technical standards EN 55022 Limits and Methods of Measurement of Radio Interference Characteristics of Information Technology Equipment EN 50082 1 Electromagnetic compatibility Generic immunity standard Part 1 Residential commercial and light industrial EN60950 1992 Safety of information technology equipment including electrical business equipment 3Com Corporation 5400 Bayfront Plaza P O Box 58145 Santa Clara CA 95052 8145 Warranty and Software License Agreement 3Com End User Software License Agreement IMPORTANT Read Before Installing The Software YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING INSTALLING AND USING THIS PRODUCT THE USE OF WHICH IS LICENSED BY 3COM CORPORATION 3COM TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW DOWNLOADING INSTALLING OR OTHERWISE USING ANY PART OF THE SOFTWARE OR DOCUMENTATION INDICATES THAT YOU ACCEPT THESE TERMS AND CONDITIONS IF YOU DO NOT AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT DO NOT DOWNLOAD INSTALL OR OTHERWISE USE THE SOFTWARE OR DOCUMENTATION DO NOT CLICK ON THE I AGREE OR SIMILAR BUTTON AND IF YOU HAVE RECEIVED THE SOFTWARE AND DOCUMENTATION ON PHYSICAL MEDIA RETURN THE ENTIRE PRODUCT WITH THE SOFTWARE AND DOCUMENTATION UNUSED TO THE SUPPLIER WHERE YOU OBTAINED IT LICENSE 3Com grants you a nonexclusive nontransferable exc
4. Bits setting on the ECB that matches the stop bits setting of that device The Stop Bits setting determines the number of bits used to represent an end of a character The value can be 1 or 2 Determine the parity bit setting of the device you are connecting to the ECB then select the Parity Bit setting on the ECB that matches the parity bit setting of that device The Parity Bit setting is used to check for correct data transmission Options are none even and odd Flow Control Flow control is the process of adjusting the flow of data from one device to another to ensure that the receiving device can handle all of the incoming data Flow control becomes an important factor when one of the devices is capable of transmitting data at a rate faster than the other can receive it There are two basic types of flow control hardware and software Hardware Flow Control Hardware flow control uses dedicated signal lines to dictate transmission of data and has two options that allow you to select which pair of lines to use for this type of flow control m RTS CTS Request To Send Clear To Send a DTR DSR Data Terminal Ready Data Set Ready li NOTE The Windows Hardware flow control setting uses the RTS CTS flow control lines Software Flow Control Software flow control uses two special characters called Xon and Xoff which are embedded in the data to turn on or off the transmission of data from the source to receiver In the incoming dir
5. ESSID 2 19 event log 17 errors 48 F factory defaults resetting to 16 firmware updates 47 updating procedure 15 flow control 28 configuring 29 hardware 28 software 28 forward table 18 G gateway usinga 26 GUI message log 17 H hardware flow control 28 hardware installation 6 Hyperterminal 49 l O control serial line replacement 36 indicators LED 5 infrastructure topology 1 installing configuration utility 9 hardware 6 IP address 25 LED indicators 5 Alert 5 Ethernet 5 Power 5 Serial 5 Wireless 5 loading a configuration 13 log association 17 event 17 GUI message 17 log viewer screen 17 LPD 31 M MAC address forward table 18 message log 17 MIBs 67 mounting plate removal 7 radio settings configuring advanced 19 configuring basic 19 radio type changing 16 removing the cap 6 the mounting plate 7 requirements operating system 9 resetting to factory defaults 16 returning products for repair 70 RMP pipe configuring 33 parameters 34 N netmask 25 network bindings terminal configurator 59 network name 19 work serial port configuring ECB as 39 TCP connect port 41 TCP listen port 40 work settings configuring 25 work supplier support 68 O online technical services 67 operating system requirements 9 P packets serial 29 parameters RMP pipe 34 parity bit setting 28 password changing 14 PC Card settings configuring 19 pro
6. Ethernet Lights green to show that a valid Ethernet link is present on the 10BASE T port Lights amber during Ethernet activity Serial Lights green when receiving data on the serial port and lights amber when transmitting data out the serial port Installing the Hardware and Software Figure 5 ev 3com Ethernet Client Bridge Power Alert Wireless Ethernet Serial Installing the Hardware This section will guide you through the hardware installation of the 3Com ECB including the installation of the wireless LAN PC Card Please note that the user manual that accompanied your wireless LAN PC Card should be used in combination with this manual for many of the advanced configurations NOTE The 3Com ECB does not include a wireless LAN PC Card These cards are sold separately Please i see the 3Com Web site at www support 3com com for the most current list of 3Com PC Cards supported by your ECB 1 Remove your ECB from the packaging The ECB ships fully assembled Figure 6 In order to install the radio and use the ECB some disassembly and re assembly is required Figure 6 Remove the cap from the ECB by pulling on the side of the cap to release it from the main ECB Removal of the cap will reveal the PC Card slot Figure 7 Installing the Hardware and Software Figure 7 es RSS VBE BERS 3 If you plan to mount the ECB on the wall or ceiling optional remove the bottom mounting plate Figure
7. Figure 10 Power 10BASE T Configuration jack Ethernet port Serial port button 00000 5VDC RJ 45 Serial Contig Verify that the Ethernet LED is illuminated Figure 5 indicating a valid Ethernet connection to your PC Your ECB hardware is now ready for configuration using the ECB Configuration Utility software Proceed to ECB Configuration Utility Software below Installing the Hardware and Software ECB Configuration Utility Software The ECB Configuration Utility software can be installed on a PC or workstation running either Windows 95 98 Windows 2000 Windows NT or Linux with X11 Windows Manager and GTK installed This utility allows you to graphically and remotely Display a list of ECB units running on the local network Display and edit the current configuration of any ECB Save and load configurations Update the ECB firmware protocol This means that your ECB units must be accessible on the local Ethernet network in order to communicate with the ECB Configuration Utility li NOTE The ECB Configuration Utility software communicates with the ECB using a non routable In the event the Configuration Utility is not available the Terminal Configurator is an alternative method that can be used to configure the ECB See Appendix A for more information Windows 1 Insert the Installation CD into the appropriate drive of your computer If the installation program does not begin automatically click My Computer on
8. Set Ready as its flow control signals The aforementioned signals are sent to the host computer while its buffers fill and empty by the ECB Software flow control works the same outgoing as it does incoming CTS and DSR work the same way RTS and DTR do as well When one communicator wants the other to stop sending data it can use as many of the flow control options as necessary to communicate its request to the other side Selection for software is flow control is made during the configuration For both incoming and outgoing flow control use the words yes and no to enable or disable recognition There is one additional allowed value for the CTS entry This value is RTS This may seem confusing but originally the UART protocol was only defined to restrict data flow in one direction and that would be from a modem to the host computer Originally the modem would be allowed to send data to the host computer at any time The modem which does not have any buffering capabilities would loose data if the data was not sent to the host immediately otherwise all of the data thereafter would be lost The host computer however would have to ask permission from the modem to send data The host would do this by asserting the RTS line The modem would see this and check to see if it were ready to accept data If so it would then assert the CTS line thus giving it permission Once the host computer finished sending the data it would drop the RTS line and
9. a Network Serial Port Connection to a network serial port is accomplished over a TCP IP socket connection Any program that uses standard TCP IP network sockets may be used to communicate with the serial port of the ECB Once a socket is established to the ECB any data written to the socket will be sent out the serial port of the ECB At the same time any data received by the serial port of the ECB will be returned via the socket connection The ECB network serial port may be used in two modes m TCP Listen Port m TCP Connect Port In the TCP Listen Port mode the ECB waits for a TCP IP socket connection to be made by the network program with which it will communicate TCP Listen Port mode should be used if you have a central server that expects to open a TCP IP socket connection to the ECB In the TCP Connect Port mode the ECB will establish a socket connection to the IP address and port number specified in the configuration TCP Connect Port mode should be used if your system expects the ECB to open a TCP IP socket connection to a central server To configure your ECB as a network serial port begin by following the steps below Complete the configuration of the Basic Radio settings as described in Chapter 5 1 2 Complete the Network Configuration described in Chapter 7 3 Complete the General Serial Configuration described in Chapter 8 4 Click the Serial tab and then select the Protocol tab TCP Listen Port and TCP Connect Port will
10. after 3Com receives the defective product Dead or Defective on Arrival In the event a product completely fails to function or exhibits a defect in materials or workmanship within the first forty eight 48 hours of installation but no later than thirty 30 days after the date of purchase and this is verified by 3Com it will be considered dead or defective on arrival DOA and a replacement shall be provided by advance replacement The replacement product will normally be shipped not later than three 3 business days after 3Com s verification of the DOA product but may be delayed due to export or import procedures When an advance replacement is provided and Customer fails to return the original product to 3Com within fifteen 15 days after shipment of the replacement 3Com will charge Customer for the replacement product at list price 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to 3Com for repair whether under warranty or not ADDITIONAL SERVICES Telephone Support with coverage for basic troubleshooting only will be provided for 90 days on a commercially reasonable efforts basis Telephone support from 3Com is available from 3Com only if Customer purchased this product directly from 3Com or if Customer s reseller is unable to provide telephone support Please refer to the Technical Support appendix in the user guide for
11. appear on the screen You have now successfully opened a direct serial connection to the Terminal Configurator If the ECB does not respond within a few seconds after pressing the configuration button and is connected to power disconnect power for a few seconds then reconnect power and press the configuration button again If the terminal displays random characters check the baud rate and bit settings in your terminal emulation software to insure 9600 baud 8 data bits no parity and 1 stop bit NOTE If after performing the above step the ECB does not respond with the configuration mode i main menu verify that there is not a cable problem by observing the amber Serial TX LED when pressing the Enter key on the PC Each time the key is pressed the Serial TX light should blink faintly and quickly If the Serial Tx light is not blinking there may be a problem in the cable connection If the Serial TX light blinks when the Enter key is pressed and the unit does not respond check to see if the serial configuration is set to 8 data bits no parity 1 stop bit Establishing a Telnet Connection This method will open a Telnet connection to the Terminal Configurator on port 23 which is the default for most Telnet programs However this only works after the ECB has been assigned a TCP IP address If you need to assign the ECB an IP address you will need to use either the Configuration Utility or the Terminal Configurator using a direct seria
12. computer to computer communication this value may be different If one exists adding it to this list will greatly improve communication efficiency Up to four delimiters can be listed here They are specified as a space separated list of ASCII values The values can be written as decimal or hexadecimal numbers protocol Data format of the communication between the UART and radio network is defined by the protocol Possible values are passthrough passthrough2 telnet and LPD a Passthrough forwards any data received over the UART or radio interfaces to the other interface with the data unchanged Passthrough2 operates much like passthrough but opens a socket in each direction so that if a ECB loses power it can re establish communications much faster when power returns Telnet gives a prompt similar to that of the Telnet application found on UNIX systems Telnet also interprets the data received over the radio removing special character sequences known as DO and DONT requests LPD is a UNIX print serving protocol LPD received data in a particular format over the radio and converts it into the data stream that should be sent to the printer Data sent by the printer is ignored NOTE When setting up to use LPD set the printing parameters so that the file is sent off using the ECB i as the remote host Any remote printer name can be used so long as it fits within the guidelines for naming a printer Terminal Configurator flow contro
13. in the active ECB is different than the PC Card that was in the ECB when the configuration parameters were saved all parameters but the radio options will be loaded from the file You will need to set the new radio parameters manually This procedure allows you to change your radio while keeping your network and serial settings If you will continue to use this new radio type you can save a new version of the configuration file so that future loads will include the radio parameter settings Configuration Utility Features Figure 14 Look in E ECB_Config 4 amp l a RemoteServer cfa fa WirelessPrinter cfg File name JECB_Config ctg Files of type Jal hea 7 Cancel J Open as read only Changing the Password Setting a password prevents unauthorized users from accessing or changing the settings on your ECB You will need to enter this password each time you wish to reconfigure the ECB It is recommended that you set a password for each ECB The selection Set New Password in the File menu lets you set or change a password on your ECB A dialog box Figure 15 will ask you to type the new password twice Clicking Update Password Now will cause the new password to become immediately active Entering blank text will remove the password The utility will not prompt for a password when it is empty Figure 15 Password Input xi Enter password J Re enter password J Update Password Now Cancel Configuration Ut
14. light green 5 Configuring Radio Settings Advanced Radio Configuration The Advanced Configuration screen is specific to the feature set of your wireless LAN card Consult your PC Card user manual for appropriate settings After configuration is complete click Update And Reset Unit The MAC Address setting found on this tab is common to all PC Cards This feature sets the MAC address used by the wireless LAN interface The ECB can only bridge packets to or from this MAC address There are four options Capture Dynamic Built in and Manual Table 1 lists the definitions of each option li NOTE Most users should use the default setting of Capture Table 1 Advanced Radio Configuration Settings Setting Effect Usage Capture Dynamic Built in Manual Every time the ECB is powered on the ECB will capture its MAC address from the first packet it receives on the 10BASE T Ethernet port The ECB detects and uses the same MAC address as the device plugged into the 10BASE T port The ECB will use the previously captured MAC address upon power on until the first packet is received on the 10BASE T port The ECB will change its MAC address each time the device plugged into the 10BASE T port changes The ECB detects the MAC address of the device plugged into the 10BASE T port and uses that as its own The ECB will use the built in MAC address upon power on until a packet is received on the 10BASE T port The ECB wi
15. software such as Netscape Navigator and Internet Explorer C Customer Support Support from Your Network Supplier If you require additional assistance contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready m Product model name part number and serial number a Alist of system hardware and software including revision levels a Diagnostic error messages a Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier 3Com offers technical telephone support services To find out more about your support options call the 3Com technical telephone support phone number at the location nearest you When you contact 3Com for assistance have the following information ready m Product model name part number and serial number a A list of system hardware and software including revision levels a Diagnostic error messages Details about recent configuration changes if applicable Here is a list of worldwide technical telephone support numbe
16. specifies the operating parameters for the passthrough protocol Currently the only entry is socket m socket The section it specifies contains the values necessary to bind a socket in other words what needs to be known to create a network connection For example this value by default is rmpbind The connection used by passthrough mode will create a socket that uses the values in the rmpbind section further down in the file to create the network connection Terminal Configurator passthrough2 With passthrough2 there are two sockets one for incoming data listen and one for outgoing data connect Note Both of these sockets must use the TCP IP protocol listen As in the socket key for the passthrough section above the value of this entry represents the name of another section that defines a network connection This value by default is tcpbind1la A later section in this file is also named tcpbind1a Thus the connection used by passthrough mode will create a socket that uses the values in the tcpbind1a section to create the network connection connect The value of this entry points to a network connection definition that initiates the connection instead of listening for it The default for this setting is tcobind1b telnet The following section specifies the operating parameters for the Telnet protocol connect This entry dictates what kind of prompt is seen on the serial port output The two choices available are
17. telephone numbers ninety 90 days The 3Com Web site and Knowledgebase are available at no charge and provide software and firmware upgrades a bug list and technical information about 3Com products Warranty and Software License Agreement WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE CUSTOMER S SOLE REMEDY FOR BREACH OF THAT WARRANTY SHALL BE REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION TO THE FULL EXTENT ALLOWED BY LAW THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES TERMS OR CONDITIONS EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE INCLUDING WARRANTIES TERMS OR CONDITIONS OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE SATISFACTORY QUALITY CORRESPONDENCE WITH DESCRIPTION AND NON INFRINGEMENT ALL OF WHICH ARE EXPRESSLY DISCLAIMED 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE OR USE OF ITS PRODUCTS 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER S OR ANY THIRD PERSON S MISUSE NEGLECT IMPROPER INSTALLATION OR TESTING UNAUTHORIZED ATTEMPTS TO OPEN REPAIR OR MODIFY THE PRODUCT OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE OR BY ACCIDENT FIRE LI
18. wait for keystroke and command prompt The default command prompt will give a prompt telnet gt much like Telnet software prompt on a UNIX system From this prompt using the open command will then connect the device to a particular machine For example typing open 10 10 10 129 will open a Telnet session to the machine with the IP address 10 10 10 129 The second choice wait for keystroke allows for a configuration that only connects to one machine requiring only a keypress to initiate the connection wait data 1 The text for this entry is to use as a prompt in wait for keystroke mode The value is specified as a combination of a string and ASCII values The default value is Press any key to connect to host The double quote marks are a part of this value unlike in previous examples Binary data can be added by writing data as hex or decimal outside of quote marks For example the ANSI clear screen command string escape left bracket H escape left bracket J can be added to the front of this string like this Ox7b H Ox1b J Press any key to connect to host wait data 2 This entry states what text to display after the keystroke is received The format of the data is the same as in wait data 1 The default is Oxd Oxa which will move the cursor to the next line ip address When in wait for keystroke mode this specifies the IP address of the machine to automatically connect to The default is 70 70 70 729 tcp port When in wa
19. your desktop Click the icon for the drive in which the Installation CD is located and then double click setup exe The Welcome screen will appear first Choose Next to continue the installation or Cancel to terminate The Software License screen appears Choosing Yes indicates that you agree to the terms presented and will allow the continuation of installation Choosing No will terminate the installation The Choose Destination screen appears next This screen contains the default path and location for the ECB_Config exe file The default path is C Program Files 3Com ECB_Config If you wish to use the default path then continue to the next screen by clicking Next You may choose another path and location for the ECB Configuration Utility that is more appropriate for your system If you choose to do this simply type the path into the field and continue by clicking Next The Select Program Folder screen will now appear This screen allows you to change the name of the program folder that will be created The default name is ECB_Config 7 Click Finish to complete the installation of the ECB Configuration Utility software The ECB Configuration Utility software is now installed and you are ready to configure your ECB Linux Ensure that X11 Windows Manager and GTK are installed on your system Copy the files located in the Linux directory on the Installation CD to a directory on your Linux machine Run the ECB_Config utility by typing ECB_C
20. 6 Enterprise Customers 1 800 876 3266 65 543 6348 31 30 6029999 From the following countries you may call the toll free numbers select option 2 and then option 2 1 408 326 7120 not toll free A access point 1 ad hoc topology 2 advanced radio settings configuring 19 association log 17 B baud rate 27 bridged Ethernet terminal configurator 60 D data bits 27 diagnosis problem 47 dimensions 5 direct serial connection establishing 49 terminal configurator 49 C cable connections 8 cap removal 6 changing password 14 radio type 16 client station name 19 client bridge list screen 11 combs to prevent vibration 7 command prompt connection 45 configuration loading 13 saving 12 figuration file format terminal configurator 53 iguration screen 11 iguration utility installing under Linux 9 installing under Windows 9 figuring advanced radio settings 19 as a network serial port 39 as a serial Telnet client 43 basic radio settings 19 encryption 20 flow control 29 general serial settings 27 network settings 25 password 14 PC Card settings 19 radio type 16 RMP pipe 33 TCP pipe 36 UART settings 27 wireless printing to a serial printer 31 configuring the ECB 3 connectors 8 contents ECB kit 3 con con co con E ECB configuring 3 connectors 8 kit contents 3 editor terminal configurator 52 encryption configuring 20 error codes terminal configurator 62
21. 8 If using the ECB without mounting it leave the mounting plate on the bottom of the ECB Figure 8 4 Remove the small combs from the cap NOTE The combs are generally not needed but when cut to an appropriate size they can prevent the PC Card from vibrating out of the socket when the ECB is in an environment with extreme vibrations 5 Confirm that the ECB is not plugged in 6 Gently insert PC Card face up into the designated slot If you are uncertain check the PC Card manual to determine the correct position of the PC Card for proper insertion Figure 9 Installing the Hardware and Software Figure 9 Replace the cap on the ECB that you removed in step 2 by snapping the cap straight down on the ECB body If you are mounting the ECB install the mounting plate where desired using the mounting hardware provided see Figure 4 for physical dimensions of the mounting plate After securing the mounting plate to the desired location attach the ECB onto the mounting plate Connect the six pin DC power cable to the power adapter Connect the AC power cord to the other side of the power adapter Connect the round power plug to the ECB port labeled 5 VDC Insert the AC power cord into the AC socket Connect a standard straight through 10BASE T Ethernet cable between the RJ 45 port on the ECB and the network port on the computer where you will install the ECB Configuration Utility software see Figure 10 for ECB connectors
22. B as described in Chapter 4 2 Click the Radio tab New horizontal tabs appear Basic Advanced and Encryption Figure 19 The Encryption tab may not appear if this option is not supported by your PC Card Figure 19 Conference Room File Help N Basic Advanced Encryption W gt j ESSID JHomeDffice T ANY Station name Conference Room Operating mode 802 11 Client 802 11 d hoc Pseudo Ad hoc Close Reload from Unit Update and Reset Unit 3 Enter the ESSID network name which is set in your AP or which you will use to establish an ad hoc group The ESSID is used to specify a unique IEEE 802 11 wireless network Wireless ECB units use the ESSID to associate to a specific access point AP Only devices with the same ESSID will associate with each other Alphanumeric values may be used in this field Enter the Station Name client name The station or client name is an arbitrary identifier for each ECB The value supplied in this field is for convenience in identifying the ECB units with software such as the ECB Configuration Utility It is recommended that you assign a meaningful client name to each ECB Like ESSID this field uses any alphanumeric combination Click Update And Reset Unit The ECB Configuration Utility Message Log should appear with a message stating that the update was successful When the ECB has joined your wireless network the radio association LED will
23. Ethernet Client Bridge 3CWE820A Wireless Network Solution http www 3com com http www 3com com productreg Published March 2001 User Guide version 1 0 0 3Com Corporation 5400 Bayfront Plaza Santa Clara California 95052 8145 U S A Copyright 2001 3Com Corporation All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without written permission from 3Com Corporation 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change 3Com Corporation provides this documentation without warranty term or condition of any kind either implied or expressed including but not limited to the implied warranties terms or conditions of merchantability satisfactory quality and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time If there is any software on removable media described in this documentation it is furnished under a license agreement included with the product as a separate document in the hard copy documentation or on the removable media in a directory file named LICENSE TXT or LICENSE TXT If you are unable to locate a copy please conta
24. GHTNING OTHER HAZARDS OR ACTS OF GOD LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIAL OR PUNITIVE DAMAGES OF ANY KIND OR FOR LOSS OF REVENUE OR PROFITS LOSS OF BUSINESS LOSS OF INFORMATION OR DATA OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND LIMITS ITS LIABILITY TO REPAIR REPLACEMENT OR REFUND OF THE PURCHASE PRICE PAID AT 3COM S OPTION THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE DISCLAIMER Some countries states or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers or the limitation of liability for personal injury so the above limitations and exclusions may be limited in their application to you When the implied warranties are not allowed to be excluded in their entirety they will be limited to the duration of the applicable written warranty This warranty gives you specific legal rights which may vary depending on local law GOVERN
25. ING LAW This Limited Warranty shall be governed by the laws of the State of California U S A excluding its conflicts of laws principles and excluding the United Nations Convention on Contracts for the International Sale of Goods 3Com Corporation P O Box 58145 5400 Bayfront Plaza Santa Clara CA 95052 8145 408 326 5000 Warranty and Software License Agreement FCC Class B Statement This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation WARNING 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 and the Canadian Department of Communications Equipment Standards entitled Digital Apparatus ICES 003 These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and o
26. Log Figure 17 To clear the entries from the event log select Clear Event Log from the File menu Association Log The Association Log records association and disassociation events Each association event is recorded with a timestamp and if available the access point MAC address and ESSID network name Each disassociation event contains only a timestamp The timestamp indicates the number of 10 millisecond periods since the unit was turned on or reset For example a timestamp of 6000 corresponds to a time of 60 seconds and a timestamp of 20 corresponds to a time of 0 2 seconds 4 Configuration Utility Features Forward Table The Forward Table Figure 18 displays the MAC addresses that have been seen by the ECB The table lists the interface wire or PC Card where each MAC address was observed The time for each entry indicates the number of seconds until that entry is removed from the forwarding table Figure 18 NewOffice2 Unit Forward Table Iof x MAC Address Time Interface 00 b0 d0 9c 89 00 10 radio 00 10 91 b0 f0 10 radio O0 c0 01 ba be aa 10 radio da da da da da da 10 radio 00 50 8b b0 07 8e 10 radio 00 de c0 de be be 10 radio Configuring Radio Settings This chapter describes how to add a 3Com Ethernet Client Bridge to your wireless network and how to use encryption Basic Radio Configuration 1 To begin configuration of the PC Card radio settings open the configuration window for the desired EC
27. Serial data ie Timeout Often serial data arrives in small bursts of characters When the ECB receives a burst of data it will wait for a certain period of time for additional data to be received If additional data is received it is added to the receive buffer and the ECB begins to wait again If additional data is not received for longer than the period specified by the Timeout value then the buffer of characters received is sent in a single network packet and the process begins again Figure 37 Timeout 10 msec gt 10 msec lt 10 msec gt 10 msec gt 10 msec e f i j 4 gt Serial data dle lflg i j T T Packet 1 Packet 2 Packet 3 data data data The value of timeout is in units of milliseconds and should be specified in 10 millisecond increments The valid range for timeout is from 10 0 01 second to 65 000 650 seconds The default value is 10 Delimiters Some serial devices transmit and receive data in a known structure In these cases there are often special characters that the transmitting device uses to indicate a complete message has been sent These characters are referred to as delimiters You can specify up to five different delimiting characters to the ECB When the ECB adds one of these characters to its buffer of serial received characters it will immedi
28. a 3Com ECB may be used infrastructure which requires an access point and 802 11 Ad Hoc which does not A detailed description of each is provided below Infrastructure Topology Infrastructure topology is the most commonly used of the two types available for use of your 3Com ECB Infrastructure mode requires the use of a device called an access point AP The main function of the AP is to form a bridge between the wired LAN and wireless clients The AP is capable of filtering high rate wired traffic and transmitting only those packets that are destined to radio clients You might think of the AP as a hub between the wired network and the wireless LAN In this mode the AP is a dedicated device that is wired into the LAN backbone The AP remains as a stationary part of the wireless LAN unlike individual ECB units that can be physically moved throughout the wireless LAN In this mode the ECB stations synchronize communication with the AP Individual ECB units do not communicate directly with each other All communication between ECB units or between an ECB and a wired network client must go through the AP Figure 1 Infrastructure mode is often used in systems that have heavy network traffic and want to utilize the filtering capabilities of the AP Figure 1 ga Access Point AP Wireless Network Topologies The re association capabilities of the IEEE 802 11 standard enable clients to move throughout the wireless LAN area and roam b
29. al port of the ECB is connected to a serial terminal or a computer that is running terminal emulation software such as Windows Hyperterminal To configure your ECB as a serial Telnet client begin by following the steps below Complete the Basic Radio Configuration instructions described in Chapter 5 Complete the Network Configuration described in Chapter 7 Complete the General Serial Configuration described in Chapter 8 Click the Serial tab and then select the Protocol tab see Figure 33 Select Telnet in the Protocol list Click the Te net tab at the top of the panel There are two methods that can be used to establish a Telnet connection wait for keystroke and command prompt The next two sections describe these methods and the configuration necessary for each Figure 33 Conference Room File Help A N UART Flow Control Protocol Telnet Packets m Protocol C RMP Pipe TCP Pipe TCP Listen Port C TCP Connect Port Telnet C LPD Radio Senal Network Reload from Unit Update and Reset Unit 12 Configuring the ECB as a Serial Telnet Client Wait for Keystroke Connection The wait for keystroke connection method establishes a connection to a specific Telnet host when the user presses a key on the Telnet terminal window When the Telnet connection is closed the ECB will wait for a keystroke to connect again To configure your ECB as a serial Telnet client using the wait for keystro
30. appear among the protocol choices displayed Figure 29 Continue following the instructions below for the mode of your choice Figure 29 Conference Room File Help UART Flow Control Protocol Listen Part Packets J j Radio Serial Network E P Protocol C RMP Pipe euseuananee C TCP Connect Port Telnet C LPD Close Reload from Unit Update and Reset Unit 11 Configuring the ECB as a Network Serial Port TCP Listen Port Complete the configuration described in steps 1 4 at the beginning of this chapter and then follow the steps below Click TCP Listen Port from the Protocol list Figure 29 Click the Listen tab Figure 30 Type the port number on which the ECB will listen for a connection This is the port number that your program will use to connect to that ECB The default is 4000 For most applications leave the Reconnect After Shutdown box checked Checking this box causes the ECB to listen for and accept a new connection if the active one closes Click Update And Reset Unit Figure 30 Conference Room File Help A A UART Flow Control Protocol Listen Port Packets yw Nu Listen on port 4000 JV Reconnect after shutdown m i ES Close Reload from Unit Update and Reset Unit 11 Configuring the ECB as a Network Serial Port TCP Connect Port Complete the configuration described in steps 1 4 at the beginning of this chapter and then fo
31. aracter at a time The other device must receive and process each character as it is received Additionally since serial communication is always done between only two devices there is no need to include information about the source and destination of the data The ECB must interpret the serial data stream collect it into groups of data then form network packets with this data and transmit the packet to the network device which is set to receive the serial information The ECB uses three user configurable parameters to segment the serial character stream into groups of data for network packets These parameters line length timeout and delimiters are described below Keep in mind that the ECB always uses all three of these parameters and when the conditions of any one of them are met a network packet is generated Line Length As data arrives on the serial port it is accumulated in a buffer in the ECB The Line length parameter sets the maximum size for this buffer When the number of characters in the buffer reaches the Line length value the entire buffer is sent as the data in a single network packet The example below illustrates a line length of 5 The value of Line length can range from 1 to 1 408 bytes The default value is 1 408 il NOTE Do not use values of Line length less than 5 with a serial baud rate of 115 200 or greater Serial Stream to Network Packet Conversion Figure 36 Line length 5 a ilj
32. ate of purchase from 3Com or its authorized reseller One 1 year 3Com s sole obligation under this express warranty shall be at 3Com s option and expense to repair the defective product or part deliver to Customer an equivalent product or part to replace the defective item or if neither of the two foregoing options is reasonably available 3Com may in its sole discretion refund to Customer the purchase price paid for the defective product All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned 3Com warrants any replaced or repaired product or part for ninety 90 days from shipment or the remainder of the initial warranty period whichever is longer SOFTWARE 3Com warrants that each software program licensed from it will perform in substantial conformance to its program specifications for a period of ninety 90 days from the date of purchase from 3Com or its authorized reseller 3Com warrants the media containing software against failure during the warranty period No updates are provided 3Com s sole obligation under this express warranty shall be at 3Com s option and expense to refund the purchase price paid by Customer for any defective software product or to replace any defective media with software which substantially conforms to applicable 3Com published specifications Customer assumes responsibility for the selection of the appropriate applications program and assoc
33. ately send that buffer as a network packet The example below illustrates a data stream with delimiting characters set to be X and Y Notice that the delimiter is included in the network packet data Serial Stream to Network Packet Conversion Figure 38 Delimiters 0x58 0x59 a bj eja x e f Y i Serial data a a b c d X e f Y i oo Packet 1 Packet 2 Packet 3 data data data The value of delimiters is specified as a list of ASCII hex values separated by spaces You may specify up to five different delimiter values If you are unsure of the hex value for your delimiter character consult the Web page www asciitable com for reference Configuration To configure the Serial Packet parameters click on the Serial tab and then select the Packets tab Figure 39 Using the descriptions in this section as a guide enter the values for Line Length Input Timeout and Delimiters specific to your setup Figure 39 Conference Room File Help ont UART Flow Control Protocol Telnet Packets l Line length fi 408 bytes Input timeout fi 0 ms Radio Serial al Delimiters Reload from Unit Update and Reset Unit C Customer Support 3Com provides easy access to technical support information through a variety of services This appendix describes these services Information contained in this appendix is correct at time of publication For the most recent
34. blem diagnosis 47 S saving a configuration 12 screen client bridge list 11 configuration 11 log viewer 17 serial line replacement 33 O control 36 RMP pipe 33 TCP pipe 36 serial packets 29 serial settings configuring general 27 serial stream to network packet conversion 63 serial Telnet client command prompt connection 45 wait for keystroke connection 44 setting baud rate 27 data bits 27 parity bit 28 stop bits 28 software flow control 28 station client name 19 stop bits 28 system requirements 3 T TCP connect port 41 TCP listen port 40 TCP pipe 36 technical support 3Com Knowledgebase Web Services 67 3Com URL 67 network suppliers 68 product repair 70 Telnet connection establishing 50 terminal configurator 50 terminal configurator 49 bridged Ethernet 60 configuration file format 53 direct serial connection 49 editor 52 error codes 62 main menu overview 51 network bindings 59 using 51 topologies adhoc 2 infrastructure 1 troubleshooting 47 U UART settings configuring 27 updating firmware procedure 15 URL 67 using a gateway 26 W wait for keystroke connection 44 Wi Fi compliance 3 World Wide Web WWW 67 Warranty and Software License Agreement 3Com Corporation Limited Warranty 3Com Ethernet Client Bridge HARDWARE 3Com warrants this hardware product to be free from defects in workmanship and materials under normal use and service for the following length of time from the d
35. cryption Used to indicate whether WEP encryption by the radio is desired or not Note that if the ECB does not support setting WEP for the particular radio in use this option will not appear Setting of the various encryption options is done in the encryption section encryption This value is the translation of data into a secret code Presently encryption is radio specific a transmit key This value sets which of the following keys are used to encrypt transmitted data The default setting for this value is 7 encryption key 1 This value is one of the keys to use for encrypting and decrypting data on the radio The key should be specified as either a 10 digit or a 26 digit hexadecimal number Note that the number should always have a Ox before the hexadecimal digits Use 10 digits for a 64 bit key and 26 digits for a 128 bit key encryption key 2 This value is one of the keys to use for encrypting and decrypting data on the radio The key should be specified as either a 10 digit or a 26 digit hexadecimal number Note that the number should always have a Ox before the hexadecimal digits Use 10 digits for a 64 bit key and 26 digits for a 128 bit key encryption key 3 This value is one of the keys to use for encrypting and decrypting data on the radio The key should be specified as either a 10 digit or a 26 digit hexadecimal number Note that the number should always have a Ox before the hexadecimal digits Use 10 digits for a 64 bit key and 26 d
36. ct 3Com and a copy will be provided to you UNITED STATES GOVERNMENT LEGEND If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following All technical data and computer software are commercial in nature and developed solely at private expense Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in 3Com s standard commercial license for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with this User Guide Portions of this documentation are reproduced in whole or in part with permission from as appropriate Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com is a registered trademarks and the 3Com logo is a trademark of 3Com Corporation Microsoft Windows and Windows NT are registered trademarks of Microsoft Corporation Wi Fi is a trademark of the Wireless Ethernet Compatibility Alliance All other company and product
37. e baud 9600 entry or comments Key value pairs listed before a section name are invalid Comments may be stored in the configuration file by inserting a pound sign before the text to be added This allows room for an explanation as to why certain settings have been made who made the changes etc Anything may be written in a comment but the comment ends at the end of the line Multi line comments are done by inserting the at the beginning of each line For example This is a comment This is line 2 of the comment this no comment But this is one File Contents System configure This contains settings that pertain to the operation of the Configuration menus Currently there is only one password m password This allows the setting of a password that will be asked for upon entry to the Configuration screen Up to 12 alphanumeric characters will be accepted Do NOT use any characters other than numbers and letters in this password Although the password is not hidden from the screen while editing it will be hidden when entering configuration bridge Bridge gives variables that are common to all radios Bridge affects the behavior of radios AP refresh period Periodically a ECB will ping an access point AP Refresh Period is the time in units of seconds between pings The default for this value is 60 which should be left at this default If this default is changed there is a chance that the access point
38. ection flow control prevents the ECB from sending data when the computer is not ready to accept it With incoming flow control on the ECB will interpret Xon Xoff characters in the data stream entering the serial port of the ECB as flow control signals The Xon Xoff characters are not considered data and therefore are absorbed by the ECB The outgoing software flow control option specifies the generation of Xon Xoff flow control characters by the ECB The control characters are sent out of the serial port of the ECB and instruct the computer to start or stop sending data This option is used to prevent the computer from sending data when the ECB is not ready to accept it Software flow control can have both incoming and outgoing mechanisms running simultaneously individually or default not at all Configuring General Serial Settings Configuring Flow Control 1 Click the Flow Control tab Figure 23 shows the default settings Figure 23 Conference Room File Help N UART Flow Control Protocol Rmp Pipe Packets W x m Hardware flow control nong ttsfcts dtr dsr m Software incoming flow control no C yes Radio Senal Network Software outgoing flow control f no C yes Reload from Unit Update and Reset Unit 2 Check the flow control settings of the device that you are connecting to the ECB Change the ECB settings to match those of the connected device by clicking the corresponding bu
39. ens the data will be lost if retry attempts are not made or are not successful The Transmit Try Count gives the user the ability to tell the ECB how diligently to attempt transmission of data Note that subsequent RMP data transmissions are delayed until the packet being retried is successfully sent or the maximum try count is reached The maximum count is 65 000 times The default value is infinite which causes each packet to be retried until successfully sent Select the Transmit Try Count based on the sensitivity of your application to data delay and or data loss Table 3 Table 3 Transmit Try Count Setting Application Sensitivity Transmit Try Count Setting Sensitive to data delay Low transmit try count Sensitive to data loss High transmit try count Transmit Retry Interval When making additional transmit attempts as specified with Transmit Try Count above it is necessary to specify how long to wait between successive retry attempts This setting determines the time period between retransmission attempts The value is specified in 1 100ths of a second so that a value of 100 means 1 second The maximum value is 65000 The default value is 100 10 Serial Line Replacement 1 O Control I O control is only relevant to serial line replacement applications that use the RMP protocol I O control defines control over digital inputs and outputs of the ECB separately from the data lines Digital input and output are
40. ept as specified herein license to use the accompanying software program s in executable form the Software and accompanying documentation the Documentation subject to the terms and restrictions set forth in this Agreement You are not permitted to lease rent distribute or sublicense except as specified herein the Software or Documentation or to use the Software or Documentation in a time sharing arrangement or in any other unauthorized manner Further no license is granted to you in the human readable code of the Software source code Except as provided below this Agreement does not grant you any rights to patents copyrights trade secrets trademarks or any other rights with respect to the Software or Documentation Subject to the restrictions set forth herein the Software is licensed to be used by one 1 user on any personal computer owned by or leased to you for your internal use You may reproduce one 1 copy of the Software and Documentation for backup or archive purposes Any copy of the Software and Documentation must contain 3Com s and its licensors proprietary rights and copyright notices in the same form as on the original You agree not to remove or deface any portion of any legend provided on any licensed program or documentation delivered to you under this Agreement ASSIGNMENT NO REVERSE ENGINEERING You may transfer the Software Documentation and the licenses granted herein to another party in the same country in
41. etween access points Re association can occur as long as the ECB has the same ESSID network name as the AP to which it is trying to make a connection Ad Hoc Topology The 802 11 Ad Hoc topology allows multiple ECB units to communicate directly with each other without the need for an access point AP or other wireless infrastructure Figure 2 shows a network in which four ECB units are used to provide wireless connectivity between Ethernet devices Figure 2 In this configuration the ECB units make all three devices appear to be connected by the same Ethernet cable Using ECB units in this manner provides a cost effective way to wirelessly link a small number of Ethernet devices In addition ECB units eliminate the need to install expansion cards or driver software NOTE A single ECB is only capable of bridging for a single Ethernet device A single ECB cannot be li connected to a hub and bridge for multiple Ethernet devices on the hub Getting Started This chapter describes the contents of the 3Com Ethernet Client Bridge package the system requirements a pre configuration information sheet and a configuration flowchart ECB Kit Contents In your Ethernet Client Bridge package you will find the following components mw Ethernet Client Bridge RJ 45 Ethernet cable 5 2V Universal AC to DC power adapter AC Power cord DC Power cable Printed quick start guide Installation CD containing a user guide and configuration so
42. fer to Software Flow Control in Chapter 8 NOTE When configuring your operating system use the network hostname or IP address of the ECB i as the remote printer host Complete the Basic Radio Configuration instructions described in Chapter 5 Complete the Network Configuration described in Chapter 7 1 2 3 Complete the General Serial Configuration described in Chapter 8 4 Click the Serial tab and then select the Protocol tab as shown in Figure 24 Figure 24 amp Conference Room Printer File Help A N UART Flow Control Protocol Packets 5 V m Protocol C RMP Pipe C TCP Pipe TCP Listen Port TCP Connect Port Telnet Radio Senal Network Close Reload from Unit Update and Reset Unit 5 Click LPD 6 Click the Flow Control tab Figure 23 Verify that the flow control settings of your ECB match those of your printer Configuring Wireless Printing to a Serial Printer NOTE If the flow control settings do not match there will likely be errors when printing Refer to your printer manual for information on how to configure flow control settings in your printer 7 Finish the configuration by clicking Update And Reset Unit Your ECB is now configured to act as an LPD print server for your serial printer 10 Serial Line Replacement Two 3Com ECBs are required to perform wireless serial line replacement Serial line replacement can operate with the radio in either infras
43. ftware Mounting hardware If any of these items are missing or damaged please contact the place of purchase or 3Com Customer Support http Avww support 3com com System Requirements One or more 3Com ECB units One Wi Fi compliant wireless LAN PC Card for each ECB For a list of supported PC Cards visit the 3Com service and support Web site at http Awww support 3com com If the ECB will be used with an access point AP you will need an AP that either is compatible with the PC Card s being used or is Wi Fi compliant Computer with Windows 95 98 Windows 2000 Windows NT or Linux with X11 Windows Manager and GTK installed Configuration Flowchart Figure 3 shows the configuration steps for your ECB Start at the top of the flowchart and move downward progressing toward a desired use of the ECB As you move down the flowchart the bulleted lists of configuration parameters you pass through are the parameters you need to set There may be additional parameters that you can use to further control the behavior of the ECB for each application however only parameters that need to be modified for proper operation are listed in this chart Example 1 For the ECB to act as an LPD Print Server you will need to set the following parameters a ESSID network name a Stop Bits a P Address a Baud Rate a Parity Bits a Netmask a Data Bits a Flow Control a Gateway 2 Getting Started Example 2 Wireless Ethernet Bridge You need only
44. g the ESSID network name If the ECB that was reset to the factory defaults is not on the same wired LAN section as your PC it is possible that it will lose association to the access point and the configuration utility will no longer be able to communicate with the ECB If this happens you will need to connect the ECB to your PC via an Ethernet cable You will then be able to use the configuration utility to set the ESSID network name to that of your access point and the ECB will associate as desired If you are unable to access the ECB through the GUI the following method can be used 1 Disconnect power to the ECB 2 Insert one end of an extended paper clip into the small hole labeled Config located near the serial port on the ECB to push the configuration button While keeping the configuration button pushed in reconnect power to the ECB Keep the configuration button pushed in for at least five seconds after power is applied The ECB will be reset to factory defaults after the five second period Changing Your Radio Type The ECB Configuration Utility utility is designed to detect the type of PC Card you are currently using and to reset the specific radio parameters accordingly Consequently if you ever want to change your PC Card and retain the network and serial parameters of your previous PC Card follow this procedure 1 With your current PC Card follow the instructions for saving a configuration as described in Saving a C
45. ge the data in any way They simply specify when data can be i transmitted over the radio line length Data is transmitted over the radio once the maximum number of characters has been achieved The line length default is 1408 Once 1408 characters have been received by the UART these characters of data will be transmitted regardless of the content of the data This value can range from 1 to 1408 but be cautious of using values too small for they could result in data loss input timeout How long the ECB will wait after some data has been received on the UART before giving up on waiting for more Once a character has been received the timer starts with this timeout If the timer expires the data is considered to be complete and gets transmitted immediately Conversely if another character is received before this timeout the timer is restarted from the beginning The range for this value is from 10 to 65536 milliseconds though it will always round up to the nearest tens of milliseconds For instance setting the timeout to 55 will mean the ECB will wait for 60 milliseconds before giving up and transmitting the data delimiters Special characters that specify the end of the data Once any of the characters listed in this option are received the data is transmitted immediately In serial communications there is frequently a character reserved to mean end of transmission In human interface applications this character is the newline or Enter key For
46. hat need to be configured to accomplish this task UART Settings and Flow Control Settings Configuring Universal Asynchronous Receiver Transmitter UART Settings A Universal Asynchronous Receiver Transmitter UART is the fundamental hardware for serial communication controlling the speed and method of data transfer of the serial port To configure the UART follow the steps below 1 Click the Serial tab 2 Click the UART tab Figure 22 displays the default settings for the UART Figure 22 Conference Room File Help UART Flow Control Protocol Rmp Pipe Packets J N Baud ee i EE C 7bis 1bit none bits C 2 bits C even Data bits m Stop J Parity C odd Reload from Unit Update and Reset Unit 3 Select the baud rate of your device from the pull down menu The baud rate indicates the data transfer rate of the serial port The baud rate ranges from 300 to 115200 bits per second bps Standard rates are 300 1200 2400 9600 19200 38400 57600 115200 4 Determine the data bits setting of the device you are connecting to the ECB then select the Data Bits setting for the ECB that matches the data bits setting of that device The Data Bits setting determines the number of bits used to transmit data The possible values are 7 and 8 Configuring General Serial Settings 5 Determine the stop bits setting of the device you are connecting to the ECB then select the Stop
47. iated reference materials 3Com makes no warranty or representation that its software products will meet Customer s requirements or work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third party s product or from use of the software product not in accordance with 3Com s published specifications or user manual OBTAINING WARRANTY SERVICE Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the applicable warranty period to obtain warranty service authorization Dated proof of purchase from 3Com or its authorized reseller may be required Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid and packaged appropriately for safe shipment and it is recommended that they be insured or sent by a method that provides for tracking of the package The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days
48. igits for a 128 bit key encryption key 4 This value is one of the keys to use for encrypting and decrypting data on the radio The key should be specified as either a 10 digit or a 26 digit hexadecimal number Note that the number should always have a Ox before the hexadecimal digits Use 10 digits for a 64 bit key and 26 digits for a 128 bit key ip The following sections sets the configuration of the IP protocol ip address P address that will be used by other computers to communicate with a particular ECB netmask When logical ANDed with the IP address specifies the range of IP addresses within the local network broadcast In the local network this is the IP address that is used to refer to all computers simultaneously The default automatic will work for almost all configurations There should be no need to change this value route For this network interface card this value references section names that specify the routing options The default of automatic will work for most configurations gateway f present this value specifies the IP address of your Internet router or firewall By default this value is set to none Change this value to the IP address of your gateway if you intend to use an Internet router or firewall A Terminal Configurator Terminal Configurator Error Codes Table 6 Terminal Configurator Error Codes Error Code Description Xxxx yyyy section does not exist Xxxx yyyy zzzz en
49. ility Features Updating ECB Firmware 1 Begin by downloading the latest version of firmware from the 3Com Web site at Wwww support 3com com to the computer that is currently running the ECB Configuration Utility The firmware file will have the extension rmu After downloading the firmware click File in the Main screen of the ECB Configuration Utility Figure 12 Select Upload Firmware from the options Use the file selector Figure 16 to navigate to the location of the firmware file Double click on the file The Log Viewer will display a progress status At the end of the process your ECB will reset The Log Viewer will announce that your ECB has been properly updated The Alert light on the ECB will flash and after about 15 to 20 seconds the new image will be fully installed and your ECB is ready for use Figure 16 Lookin E ECB_Config l a RemoteServer cfa fa WirelessPrinter cig File name Ecs imu Files of type Jal Ct x Cancel J Open as read only 4 Configuration Utility Features Resetting to Factory Defaults 1 Begin by clicking File in the main screen of the ECB Configuration Utility Figure 12 2 Select Reset To Factory Defaults All of the parameters will immediately be restored to the factory default values Depending on your current radio network setting resetting to factory default might leave your ECB in a non reachable state Resetting to defaults resets all parameters includin
50. information 3Com recommends that you access the 3Com Corporation World Wide Web site Online Technical Services 3Com offers worldwide product support 24 hours a day 7 days a week through the following online systems a World Wide Web site mw 3Com Knowledgebase Web Services a 3Com FIP site World Wide Web Site To access the latest networking information on the 3Com Corporation World Wide Web site enter this URL into your Internet browser http www 3com com This service provides access to online support information such as technical documentation and software library as well as support options that range from technical education to maintenance and professional services 3Com Knowledgebase Web Services This interactive tool contains technical product information compiled by 3Com expert technical engineers around the globe Located on the World Wide Web at http knowledgebase 3com con this service gives all 3Com customers and partners complementary round the clock access to technical information on most 3Com products 3Com FTP Site Download drivers patches software and MIBs across the Internet from the 3Com public FTP site This service is available 24 hours a day 7 days a week To connect to the 3Com FTP site enter the following information into your FTP client m Hostname ftp 3com com m Username anonymous m Password lt your Internet e mail address gt NOTE You do not need a user name and password with Web browser
51. ions Terminal Configurator Return to Main Menu Goes back to the previous menu selections System Brings up the editor screen with the configuration file for options that are not communication dependent RS 232 port uart0 Brings up the editor screen with the configuration file for the serial port and per connection network settings Bridged Ethernet lan0 Brings up the editor screen with the configuration file for the radio parameters and IP network interface settings Using The Editor Selecting one of the configuration files above will bring that file into the editor Once inside the editor you may use arrow keys to move the cursor around If the arrow keys do not work with your terminal emulator use Ctrl P for up previous Ctrl N for down next Ctrl B for left back and Ctrl F for right forward for cursor motion For faster motion you can use Ctrl A to jump to the beginning of the line and Ctrl E to jump to the end People familiar with the Emacs editor should feel at home with these keystrokes To make changes in the editor simply move the cursor to the point you want to change and type Deleting text behind the cursor can be done by moving the cursor to the position immediately following the character to remove and press either the Backspace or Delete keys or type Ctrl H To delete text in front of the cursor press Ctrl D To delete text from the cursor to the end of the line press Ctrl K After editing is c
52. it for keystroke mode this specifies the TCP port number to connect to automatically The default is port number is 23 reopen after shutdown After one connection has been completed this value will appear and ask to connect again The default is on Terminal Configurator Network Bindings This section describes the meaning behind each of the entries that describe network binding Five prewritten bindings are provided as examples rmpbind This binding can be used for both the passthrough protocol and for the I O control socket setting protocol This example uses the RMP protocol so the value of this entry is rmp RMP binding options are described below If you wish to use the TCP IP protocol skip to the next example source address This is the value that the ECB will use to identify its serial port when sending serial data to and receiving serial data from other ECB units In short this is its port address The default value is default which will cause the ECB to use its serial number as the address source address filter Setting this value will tell the ECB to only accept data coming from the address specified For example if this entry is set to 7234 only data originating from a ECB with the port address of 7234 will be accepted All other data will be ignored that does not have the source address filter set to a specific address The default value is none destination address This address tells the ECB which port address to send da
53. ke connection method follow steps 1 6 at the beginning of this chapter and then complete the steps below Click wait for keystroke Figure 34 In the Connect to IP field enter the IP address of the device to which the ECB will establish a Telnet connection The default Connect to Port value 23 is the industry standard port number for Telnet connections It is unlikely you will ever need to change this setting Leave the Reconnect After Shutdown box checked to allow a new session after closing an active one Click Update And Reset Unit Figure 34 Conference Room File Help A N UART Flow Control Protocol Telnet Packets IN Connect to IP fi 0 10 10 129 Connect to port 23 V Reconnect after shutdown Radio Serial Network Reload from Unit Update and Reset Unit 12 Configuring the ECB as a Serial Telnet Client Command Prompt Connection The command prompt connection method provides a Telnet prompt to the serial terminal From the Telnet prompt a user can open a Telnet session to any computer or device that is accessible on the network and is capable of accepting Telnet connections To establish a Telnet connection from the terminal emulator software type the command open followed by the IP address of the host computer or device The IP address may optionally be followed by the TCP port number on which to open the connection If the port number is omitted the industry standard default Telnet
54. l The ECB supports the following six flow control options Recognize RTS Generate CTS Recognize DTR Generate DSR Recognize XON XOFF and Generate XON XOFF It also supports the original RS 232 specification for flow control where CTS is generated only when RTS is asserted These options are explained below The incoming flow control options specify what method of communication is used between the ECB and the device it is communicating with over the RS 232 cable to instruct the ECB when to start and stop sending data Since the ECB is a DCE Data Communications Equipment device the three methods of incoming flow control are software also known as XON XOFF RTS Request To Send and DTR Data Terminal Ready These three methods are all signals that the host computer sends to the ECB when it either has too much data to work with and wants the ECB to stop sending or when it does not have enough data and wants the ECB to start sending what it has Software flow control is implemented as two specific characters that are sent on the wire embedded with the data RTS and DTR are signals that have their own wires independent of the data wires The outgoing flow control options specify the method of communication that is used between the ECB and the host computer This communication instructs the computer to start and stop sending data The host computer is a DTE device Data Terminal Equipment thus uses software CTS Clear To Send and DSR Data
55. l Data or any copies thereof or any products utilizing the Technical Data in violation of any applicable laws or regulations of the United States or the country where you legally obtained it You are responsible for obtaining any licenses to export re export or import the Technical Data In addition to the above the Product may not be used exported or re exported i into or to a national or resident of any country to which the U S has embargoed or ii to any one on the U S Commerce Department s Table of Denial Orders or the U S Treasury Department s list of Specially Designated Nationals TRADE SECRETS TITLE You acknowledge and agree that the structure sequence and organization of the Software are the valuable trade secrets of 3Com and its suppliers You agree to hold such trade secrets in confidence You further acknowledge and agree that ownership of and title to the Software and Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers UNITED STATES GOVERNMENT LEGENDS The Software Documentation and any other technical data provided hereunder is commercial in nature and developed solely at private expense The Software is delivered as Commercial Computer Software as defined in DFARS 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a and as such is provided with only such rights as are provided in this Agreement which is 3Com s standard commercial licen
56. l connection Click Start Click Run Type telnet xxx xxx xxx xxx where XXX XXX XXX XXX is the IP address of the unit you wish to configure The Terminal Configurator will appear on the screen You have now successfully opened a Telnet connection to the Terminal Configurator Terminal Configurator Using the Terminal Configurator Once you have established a connection to the Terminal Configurator you will see the Main menu 1 2 Once the Main menu is displayed use the arrow keys to move the highlighted bar If the arrow keys don not work you can move the bar by holding down the Control key while pressing N for Next and P for Previous to move the bar To select an entry press the Enter key To modify the configuration as described in the following sections select the menu item Edit configuration Another menu listing available files to edit will then display Selecting one of the available files will bring up an editor that you can use to modify the file File selection and editor operation are described below After you have finished configuring the ECB select Reset the Unit and then answer Yes to the confirmation This will reset the device allowing the new configuration to take effect as well as place it into operating mode Now you are ready to use your new configuration Main Menu Overview Resume operation This option exits Configuration It returns the ECB to the settings the ECB had before the Co
57. ll use the MAC address of the PCMCIA wireless LAN PC Card This will prevent the ECB from bridging for any device on the 10BASE T port The ECB will use the MAC address specified by the user The ECB will bridge traffic for a device with the specified MAC address Use Capture when the ECB is attached to the same device all the time example an Ethernet printer Use Dynamic when you want to change the device that the ECB bridges for without requiring a power cycle of the ECB example public access gateway Use Built in when the ECB is used exclusively for serial port applications example network serial port without Ethernet bridging The Manual setting should rarely be used This setting is needed if the ECB is bridging to an Ethernet device that never generates any traffic Encryption The Encryption tab may not appear if your wireless LAN PC Card does not support this option Encryption is necessary to associate to an AP which is configured to deny unencrypted connections Consult your PC Card manual for a description of how to set up encryption on your PC Card In many cases you will want encryption enabled to provide security for data being sent across the wireless part of your network Configuring Radio Settings Figure 20 Conference Room File Help Basic Advanced Encryption X e j IV Enable encryption Transmit key le key1 ke2 C ke3 C kep4 kel key OtSt CS key2 J
58. llow the steps below 1 Click TCP Connect Port from the Protocol tab list Figure 31 Figure 31 Conference Room File Help A N UART Flow Control Protocol Connect Patt Packets 7 NX m Protocol C RMP Pipe TCP Pipe C TCP Listen Port Telnet C LPD Radio Senal Network Close Reload from Unit Update and Reset Unit Click the Connect Port tab Figure 32 In the Connect to IP field enter the IP address of the device that the ECB is connecting to In the Connect to Port field type the port number to which the ECB will connect The default is 4000 For most applications leave the Reconnect After Shutdown box checked Checking this box causes the ECB to re initiate a new connection if the active one closes Click Update And Reset Unit 11 Configuring the ECB as a Network Serial Port Figure 32 d Conference Room to IP 0 10 10 129 st to pori 4000 12 Configuring the ECB as a Serial Telnet Client This chapter describes how to configure your 3Com ECB as a serial Telnet client Telnet is a method to connect and remotely log in to a host computer or network device The host computer or device must be running a Telnet server for this service to be available Once the Telnet session is established from the ECB any data received by the serial port of the ECB is sent to the host At the same time any data returned from the host is sent out the serial port of the ECB Typically the seri
59. lnet Client Wait for Keystroke Connection Command Prompt Connection Troubleshooting Firmware Updates Problem Diagnosis Event Log Error Terminal Configurator Establishing a Direct Serial Connection Establishing a Telnet Connection Using the Terminal Configurator Main Menu Overview Using The Editor Configuration File Format File Contents System RS 232 Port uartO Network Bindings Bridged Ethernet lan0 Terminal Configurator Error Codes Serial Stream to Network Packet Conversion Line Length Timeout Delimiters Configuration Customer Support Online Technical Services World Wide Web Site 3Com Knowledgebase Web Services 3Com FTP Site Support from Your Network Supplier Support from 3Com Returning Products for Repair Index Warranty and Software License Agreement 3Com Corporation Limited Warranty FCC Class B Statement FCC Declaration of Conformity 3Com End User Software License Agreement Wireless Network Topologies The 3Com Ethernet Client Bridge can be easily integrated into your existing wireless network or multiple ECB units or other clients can be used to create a new wireless network A wireless network or wireless LAN acts as an extension or alternative to a wired network within a building or campus Data is transmitted and received using radio waves In a wireless LAN environment no cabling is needed between nodes for data communication There are two topologies in which
60. n the user is encouraged to try to correct the interference by one or more of the following measures m Reorient or relocate the receiving antenna m Increase the separation between the equipment and receiver m Connect the equipment into an outlet on a circuit different from the one which the receiver is connected to m Consult the dealer or an experienced radio TV technician for help The user may find the following booklet prepared by the Federal Communications Commission helpful The Interference Handbook This booklet is available from the U S Government Printing Office Washington D C 20402 Stock No 004 000 00345 4 NOTE In order to maintain compliance with the limits of a Class B digital device 3Com requires that you use quality interface cables when connecting to this device Changes or modifications not expressly approved by 3Com could void the user s authority to operate this equipment Refer to the manual for specifications on cabling types FCC Declaration of Conformity We declare under our sole responsibility that the Model Description 3CWE820A Ethernet Client Bridge to which this declaration relates is in conformity with the following standards or other normative documents m ANSI C63 4 1992 Methods of Measurement Federal Communications Commission 47 CFR Part 15 subpart B Marking by the symbol CE indicates compliance of this equipment to the EMC Directive 89 336 EEC the Low Voltage Directive 73 23 EEC amended by
61. n to factory defaults and reset the ECB If the problem persists contact 3Com Customer Support B Serial Stream to Network Packet Conversion The serial port on the 3Com ECB can be used for a range of different applications Although the applications can be quite different they all involve bridging data between the ECB s serial port and one of the network interfaces Data that is received on the serial port is packetized then transmitted on either the radio or wired network interface to the network device configured to receive serial data This chapter will discuss the process of packetizing data received on the serial port Network devices transmit and receive data in a fundamentally different way than the serial port Network devices operate on packets whereas serial devices operate on single characters A network packet is a well defined structure that includes enough information for the packet to be interpreted by different network devices routed to the appropriate destination and interpreted by the destination application Each network packet carries some amount of application data In the case of network packets for serial port applications this data is the information that was received or should be transmitted on the serial port Data transmission between serial devices is much simpler The most basic difference is that there is no requirement for data to be sent in well defined packet structures Each device sends serial data one ch
62. names may be trademarks of the respective companies with which they are associated Wireless Network Topologies Infrastructure Topology Ad Hoc Topology Contents Getting Started ECB Kit Contents System Requirements Configuration Flowchart Installing the Hardware and Software Physical Dimensions LED Indicators Installing the Hardware ECB Configuration Utility Software Windows Linux Configuration Utility Features Client Bridge List Screen Configuration Screen Saving a Configuration Loading a Configuration Changing the Password Updating ECB Firmware Resetting to Factory Defaults Changing Your Radio Type Log Viewer GUI Message Log Event Log Association Log Forward Table Configuring Radio Settings Basic Radio Configuration Advanced Radio Configuration Encryption Using the ECB as a Wireless Ethernet Bridge Configuring Network Settings Network Configuration Settings Contents Configuring General Serial Settings Configuring Universal Asynchronous Receiver Transmitter UART Settings Flow Control Hardware Flow Control Software Flow Control Configuring Flow Control Serial Packets Configuring Wireless Printing to a Serial Printer Serial Line Replacement RMP Pipe Configuring RMP Pipe RMP Pipe Parameters O Control TCP Pipe Configuring TCP Pipe Configuring the ECB as a Network Serial Port TCP Listen Port TCP Connect Port Configuring the ECB as a Serial Te
63. nd South America North America 0800 13 3266 01 800 849CARE 800 666 5065 AT amp T 800 998 2112 1 800 NET 3Com 1 800 638 3266 Enterprise Customers 1 800 876 3266 C Customer Support Returning Products for Repair Before you send a product directly to 3Com for repair you must first obtain an authorization number Products sent to 3Com without authorization numbers will be returned to the sender unopened at the sender s expense To obtain an authorization number call or fax Country Telephone Number Fax Number Asia Pacific Rim Europe South Africa and Middle East Central and South America Argentina Bolivia Brazil Caribbean Chile Colombia Ecuador Mexico Paraguay Peru Uruguay Venezuela Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K U S A and Canada 65 543 6500 31 30 6029900 525 201 0075 0810 222 3266 511 241 1691 0800 133266 or 55 11 5643 2700 525 201 0004 562 240 6200 525 201 0004 525 201 0004 525 201 0004 525 201 0004 511 241 1691 525 201 0004 525 201 0004 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 00800 12813 1800553117 1800 9453794 1678 79489 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 1 800 NET 3Com 1 800 638 326
64. network settings 1 Click the Network Tab Under the Basic tab three fields are displayed as shown Figure 21 Figure 21 amp Conference Room File Help A Basic W gt j IP Address fn 0 10 10 45 Netmask 255 255 255 0 Gateway none E Reload from Unit Update and Reset Unit Enter the P Address you wish to assign to the ECB The IP address is the network address that will be used by other computers to communicate with the ECB Enter the Netmask value This is a value that defines the range of IP addresses available within your local network 7 Configuring Network Settings 4 If your network uses a gateway router or firewall enter the IP address of the gateway You will need to enter the IP address of your gateway if you plan to use the ECB to access computers or other ECB units beyond your Internet router or firewall A gateway entry is only needed for serial applications that actively connect to an IP address outside your local area network You may enter none in this field if no gateway is present or a gateway is not needed Configuring General Serial Settings This chapter describes the general serial settings that are required for all serial port applications described in the following chapters For proper operation it is imperative that these settings of the 3Com ECB always match the settings of the device to which it is connected via the RS 232 port There are two groups of parameters t
65. nfigure button was pressed Edit configuration Brings up a list of files to edit Descriptions of the files and their contents are below View configuration for capture If you select this option it will give you an opportunity to enable capture mode in your terminal software It will then display all configuration settings and give you the option to disable capture mode This option can be used to keep a record of the settings made for a particular ECB unit or to generate a file for 3Com Customer Support if you have any difficulties Reset configuration to default Sets all configuration files to their factory default A confirmation dialog box to verify previous selection so changes may or may not take place View forwarding database Lists the MAC addresses of all network nodes detected and the network interface of which they were last listed View roaming log Lists the MAC addresses of the access points the ECB has had association disassociation View system error log Shows a list of errors if any have occurred Use this option if the ECB Status LED is lit to see what kind of message the ECB is generating See Section 13 2 for a list of messages Clear system error log Removes all messages from the error log described above Reset the unit Performs a hardware reset Use this after making configuration changes to allow the changes to take effect Edit Configuration Menu The Edit Configuration menu contains three or four select
66. o not function as digital inputs cts Allowed values are negate assert and passthrough dsr Allowed values are negate assert and passthrough CTS and DSR are output lines When set to negate or assert they will output a continuous digital value The value negate outputs a logic 1 or mark which is electrically negative This is also the state seen on an RS 232 connector when the cable is unplugged The value assert outputs a logic 0 or space which is electrically positive When set to passthrough CTS will output the value that the remote ECB is receiving on its RTS line and DSR will output the remote DTR value The source of these remote signals depends on the remote ECB s socket setting in this section resend interval Ordinarily the digital input lines are transmitted whenever they change In some cases such as when the remote unit is turned off and then on so that it forgets the previous output states this is insufficient Setting this resend interval value to a non zero number causes the state of the input lines to be re transmitted in a regular interval The value of this setting is in seconds socket This entry specifies a network connection to use to send the RTS and DTR input states to a remote ECB The value of this setting must be the name of a section that describes the network connection to use Also the connection must use the RMP protocol This is typically set to the rmpbind section passthrough The following section
67. ompleted please save these changes by pressing Ctrl W After the changes are saved the Edit Configuration menu will then return to the screen Although changes will be saved they will not take effect until you power the ECB off and back on If you decide that you do not want to save the changes you have made press Ctrl X It will ask for confirmation then returns to the Edit Configuration menu If while typing the screen display becomes corrupted or confused press Ctrl L to force a screen redraw Corruptions or confusions may occur due to many terminal emulation software packages not emulating VT100 correctly Terminal Configurator Configuration File Format People familiar with the Windows WIN INI file format will recognize the format of the file It is broken down into sections that define a particular grouping of options Each section contains a section header at the top which is a string of text surrounded by square brackets This is the section title After each section header there is a list of entries containing equal signs The text before the equal sign is a key and the text after the equal sign is the value Changing the value of different keys is how configuration changes are performed For example here are the first two lines of the uartO RS 232 file hardware baud 9600 In this example hardware is the name of a section Until the next section name in the file all entries must be either key value pairs such as th
68. onfig from the directory where you installed the files 4 Configuration Utility Features Client Bridge List Screen The initial screen of the ECB Configuration Utility will display a list of the ECB units currently detected on the Ethernet All ECB units can be accessed from this main screen The buttons on this screen allow you to scan exit and configure a unit and display the help page The scan function allows you to perform a new search for active ECB units After a scan is executed any previously displayed ECB units that are no longer found will be removed from the list and new ECB units will be displayed At the start up of the ECB Configuration Utility the program displays a list of available ECB units Figure 11 Begin by highlighting the ECB that you wish to configure Either click Configure or double click the desired ECB listing Figure 11 Client Bridge List IP address MAC address 10 0 0 122 00 02 2d 00 64 bf 3com Home 10 0 0 123 00 02 2d 04 b af NewOffice2 10 10 10 45 08 00 02 23 3c 52 Conference Room Exit Configure Help Configuration Screen A configuration screen will appear displaying information about the ECB Configuration Utility and the selected unit see Figure 12 The vertical tabs define the categories of configuration options There are three tabs Network Serial and Radio Horizontal tabs expose different sub categories described further within each specific section There are three b
69. onfiguration Remove power from the ECB switch the PC Cards and return power to the ECB Reset to factory defaults by following the instructions above Load the configuration you have just saved by following the loading instructions in Loading a Configuration All non radio parameters will be retrieved Set the specific parameters of your new PC Card by following the instructions described in Chapter 5 Configuration of Radio Settings Configuration Utility Features Log Viewer You can invoke the Log Viewer screen from the File menu of the main screen by selecting Show Log Window The Log Viewer has two main purposes a To display the different logs and tables stored on the ECB m To display status and error messages from the configuration utility In the upper left corner of the Log Viewer screen Figure 17 there is a File menu from which you can switch views between the different ECB logs and the configuration utility messages Figure 17 NewOffice2 Message Log Read Event Log Clear Event Log Read Association Log Read Forward T able Show Message Log GUI Message Log The GUI Message Log displays status messages from the configuration utility Event Log The event log displays messages generated by the ECB Event log messages include basic information about the ECB hardware and any status messages generated by the ECB To display the event log of your ECB select File in the Log screen and select Read Event
70. port number of 23 is used NOTE You must use the IP address and not the name of the host since only IP addresses are recognized by the ECB You can usually determine the IP address of a host by pinging its host name When the Telnet connection is closed the ECB will present a new Telnet prompt To configure your ECB as a serial Telnet client using the command prompt connection method follow steps 1 6 at the beginning of this chapter and then complete the steps below 1 Click command prompt Figure 35 2 Click Update And Reset Unit Figure 35 Conference Room File Help P om UART Flow Control Protocol Telnet Packets N Connect mode s ConnecttoIP 101010123 Connect to port j2 3 Iv Reconnect atter shutdown Radio Senal Network Reload from Unit Update and Reset Unit 13 Troubleshooting If your 3Com ECB is not operating properly please make sure the ECB is running the latest firmware and use this guide before contacting 3Com Customer Support Firmware Updates Firmware updates can be found at the 3Com Customer Support Web site http Avww support 3com com Problem Diagnosis Table 4 Problem Diagnosis Problem Solution Power light is off or the power light is blinking Alert light is on ECB is connected to an Ethernet cable but the Ethernet Link Light is not lit Wireless light is off and the Alert light is off The ECB is not receiving po
71. pted All other data will be ignored The value none allows data from any RMP address to be accepted The Source Address Filter value needs to be changed only if you have multiple RMP passthrough serial line replacement installations in close proximity Destination Address This address tells the ECB where to send data received on the serial port You may enter the RMP address of another ECB for direct serial line replacement Other possible values are dynamic or broadcast Entering dynamic causes data to be sent to the ECB from which the unit last received data Using the value of dynamic is an easy way to allow two ECB units that are by themselves to communicate to each other Entering broadcast causes the data to be sent to all ECB devices that are set to use RMP Pipe 10 Serial Line Replacement Figure 26 Conference Room File Help A N UART Flow Control Protocol Amp Pipe Packets mo NW Source address defaut Source address filter none Destination address dynamice Transmit try count jinfnite Transmit retry interval 707 ms Radio Senal Network mi0 control none tts cts dtr dsr Close Reload from Unit Update and Reset Unit m Transmit Try Count For non broadcast data this count specifies the number of attempts that the ECB should make in transmitting each RMP packet of data A transmission attempt may fail if the destination ECB is out of range or turned off When this happ
72. qwet SOS key3 fiza50C C i CS S S C S keys 0 S2F51B947 E Radio Serial Network Close Reload from Unit Update and Reset Unit The following is a general procedure for enabling this security feature 1 Click the Encryption tab Figure 20 2 Check the Enable Encryption box 3 Enter up to four encryption key values The values for the encryption keys may be written as either text ASCII strings or hexadecimal numbers Hexadecimal values must be preceded by Ox and are composed of the numbers O to 9 and the letters A F Text strings cannot begin with Ox The level of encryption corresponds to the length of the encryption key Table 2 See your wireless LAN PC Card manual for the encryption levels supported by your PC Card Table 2 Encryption Level and Key Length Correspondence Key Length Encryption Level Hex ASCII Example 40 bit or 64 bit Ox 10 digits 5 characters OxFEDCBA9876 128 bit Ox 26 digits 13 characters ALazyBrownDog 4 Select a transmit key The transmit key is the encryption key which will be used by the ECB to encrypt messages sent via the PC Card Messages received by the PC Card will be decrypted if they were created using any of the four keys Click Update And Reset Unit at the bottom of the ECB Configuration Utility screen If configured to run in infrastructure mode the ECB should now associate to the access point with the specified ESSID network name
73. r more ECB units without using an access point be sure your radio is using ad hoc mode Complete the General Serial Configuration described in Chapter 8 Click the Serial tab and then select the Protocol tab as shown in Figure 25 Select RMP Pipe Click the RMP Pipe tab Configure the RMP pipe parameters using the following section as a guide 10 Serial Line Replacement Figure 25 Conference Room File Help UART Flow Control Protocol imp Pipe Packets 3 gs Radio Serial Network a 2 TCP Listen Port TCP Connect Port C Telnet C LPD Close Reload from Unit Update and Reset Unit In environments where there are only two ECB units being used you do not need to change these settings from their default values The default values allow two units to automatically detect each other and establish a connection RMP Pipe Parameters The defaults for the following RMP Pipe parameters are shown in Figure 26 a Source Address This is the RMP address the ECB uses to identify itself when sending serial data to another ECB A value of default will cause the ECB to use its unique serial number as the RMP address It is unlikely you will need to change this setting Source Address Filter Setting this value will tell the ECB to accept data coming only from the specified address For example if this entry is set to 7234 only data originating from a ECB with the RMP address of 7234 will be acce
74. rs These numbers are correct at the time of publication Refer to the 3Com Web site for updated information Country Telephone Number Asia Pacific Rim Australia Hong Kong India Indonesia Japan Malaysia New Zealand Pakistan Philippines P R of China Singapore S Korea From anywhere in S Korea From Seoul Taiwan R O C Thailand 1 800 678 515 800 933 486 61 2 9937 5085 or 000800 6501111 001 800 61 009 03 5783 1270 1800 801 777 0800 446 398 61 2 9937 5083 1235 61 266 2602 10800 61 00137 or 021 6350 1590 or 00800 0638 3266 800 6161 463 82 2 3455 6455 00798 611 2230 00798 611 2230 0080 611 261 001 800 611 2000 Customer Support Country Telephone Number Europe Middle East and Africa From anywhere in these regions call Europe and South Africa 44 0 1442 435529 phone 44 0 1442 436722 fax From the following countries you may use the toll free numbers Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U K 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0800 1821502 06800 12813 1800 553117 1800 9453794 800 8 79489 0800 3625 0800 0227788 800 11376 00800 3111206 0800 831416 0800 995014 900 983125 020 795482 0800 55 3072 0800 966197 Latin America Brazil Mexico Puerto Rico Central a
75. se for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever is applicable TERM AND TERMINATION The licenses granted hereunder are perpetual unless terminated earlier as specified below You may terminate the licenses and this Agreement at any time by destroying the Software and Documentation together with all copies and merged portions in any form The licenses and this Agreement will also terminate immediately if you fail to comply with any term or condition of this Agreement Upon such termination you agree to destroy the Software and Documentation together with all copies and merged portions in any form LIMITED WARRANTIES AND LIMITATION OF LIABILITY All warranties and limitations of liability applicable to the Software are as stated on the Limited Warranty Card or in the product manual whether in paper or electronic form accompanying the Software Such warranties and limitations of liability are incorporated herein in their entirety by this reference GOVERNING LAW This Agreement shall be governed by the laws of the State of California U S A excluding its conflicts of laws principles and excluding the United Nations Convention on Contracts for the International Sale of Goods Warranty and Software License Agreement SEVERABILITY In the event any provision of this Agreement is found to be invalid illegal or unenforceable the validity legalit
76. set a ESSID network name Figure 3 3Com ECB ESSID network name Wireless Serial port Ethernet Bridge application e Baud rate e Data bits e Stop bits e Parity bits e Flow control e IP Address e Netmask e Gateway Remote IP Remote port Local port e Local port Y RMP pipe TCP IP pipe TCP IP listen TCP IP connect Telnet LPD print port port server Remote IP Remote port Command Wait for prompt method keystroke method Remote IP Remote port Installing the Hardware and Software This chapter describes the physical dimensions of the ECB unit the LED indicators and hardware and software installation procedures Physical Dimensions If you want to mount the ECB on a vertical surface refer to the outside dimensions and mounting hole dimensions of the mounting plate shown in Figure 4 Primary dimensions are given in inches and secondary dimensions are in mm Figure 4 Use 6 or M4 flathead fasteners for mounting bracket lt 1 10 28 0mm LED Indicators As shown in Figure 5 there are five LED indicators Power Lights green when power is applied Alert Lights amber when status information is available Wireless Lights green when the PC Card is associated to another client and lights amber during radio communication
77. ssion because the radio is packet based and the UART is stream based Stream based data means that the data is transmitted and received one byte at a time without any mechanism to separate chunks of data from other chunks of data The devices generating and using the data produced by the stream based packet determines how the data is delimited Additionally the devices also determine the meaning of the packet Packet based data means that the data is grouped into chunks and then wrapper information is added to this data specifying the destination of the data Computer networks are packet based by design The radio in the ECB is really a computer network interface so the ECB s radio is packet based This becomes important as the data is moved between the UART and the radio When data is received over the radio sending it to the UART is simple The wrapper information is removed and the data inside the wrapper is sent out the serial port as fast as it can go However data being received over the serial port must be converted into packets In order to perform this conversion the ECB must be given a set of rules that tell it that it is okay to start transmitting the data already received The data cannot be transmitted as soon as it is received because as explained earlier there is overhead in the radio transmitting process The values in this section define these conversion rules Terminal Configurator NOTE These rules do not chan
78. ta is being sent to the UART at a rate faster than it can clear its receive buffers and data is being lost Enable flow control for your serial application Note that if you are using the serial port menu system for configuration flow control will not be enabled in the ECB To avoid getting this error while in the serial port configuration system simply type slower FLASH may be damaged Configuration cannot be accessed or saved Contact 3Com Customer Support PC Card could not be initialized Try each of the following steps in order If any of these steps succeed there is no need to perform any of the later steps otherwise continue to the next step 1 Reset the ECB 2 Unplug the power wait for approximately 30 seconds and then reapply power 3 Reset the ECB to the factory default configuration and reset the ECB 4 Contact 3Com Customer Support if the problem persists A Terminal Configurator The Terminal Configurator is an alternate method that can be used to configure your 3Com ECB It can be used in the event that the ECB Configuration Utility Chapter 3 is not available The Terminal Configurator is a text based configuration method that lacks many of the features of the Configuration Utility The Terminal Configurator can be accessed in two ways The Terminal Configurator can be used via a direct serial connection When using a direct serial connection the ECB communicates with a serial terminal or a computer that is r
79. ta received from the serial port It can be the port address of another ECB s serial port or it can be broadcast or dynamic Broadcast means to send the data to all of the ECB devices Dynamic means sending the data to the ECB from which it last received data Dynamic has the effect of causing two ECB units that are by themselves to communicate to each other The default value is dynamic transmit try count For non broadcast data this count specifies the number of attempts that the ECB should make in transmitting each piece of data to a remote ECB A transmission may fail if the destination ECB is out of range or turned off When this happens the data will be lost if additional attempts are not made This count gives the user the ability to tell the ECB how diligently to attempt transmission of data The maximum count is 65 000 times The default value is infinite transmit retry interval When attempting additional transmit attempts as specified with transmit try count above it can be useful to additionally specify how long to wait between attempts This setting determines the time period for retransmission attempts The value is specified in 1 100ths of a second so that 100 means 1 second The maximum value is 65000 The default value is 700 tcpbind1a Four prewritten bindings tcpbind1a tcobind1b tcpbind2 and tcpbind3 are provided for TCP IP When protocol is set to passthrough only one binding is used because only one network socket is crea
80. ted tcpbind2 and tcpbind3 are passthrough binds When protocol is set to passthrough2 two complimentary bindings one connect and one listen are used tcpbind1a and tcpbind1b are complimentary because a socket is created in each direction protocol These examples use the TCP protocol so the value of this entry is tcp type The values in this entry can be either isten or connect This specifies whether the ECB will wait for a connection from another computer or attempt to initiate the connection itself ip address Used in TCP protocol to specify the address to which to connect Connect must be selected for the IP address to be used local tcp port This port defines the TCP port number that the ECB will wait for connections from other networked devices Listen must be selected for this port to be used Terminal Configurator remote tcp port This port specifies the TCP port numbers to connect to on the remote computer Connect is the type for this port reopen after shutdown If the type is isten this value determines whether a second connection will be accepted after the first connection terminates If the type is connect this value determines whether another connection attempt will be made if the first connection is closed by the remote computer socket connect data Data to be written to the connection once it is successful is the socket connect data The value is specified as a combination of a string and ASCII values For example the defa
81. the modem would subsequently drop the CTS line This is the behavior that is emulated when RTS is used as the value for the CTS entry Note that this is obsolete behavior and most devices are designed for RTS to really mean flow control in the computer s direction But the ability is there if you have older equipment Also note if this setting is chosen then set the RTS entry to no since that line will not have the meaning of incoming flow control incoming software Allowed values are yes and no rts Allowed values are yes and no dtr Allowed values are yes and no outgoing software Allowed values are yes and no Terminal Configurator a dsr Allowed values are yes and no a cts Allowed values are yes no and rts i o control V O control defines control over digital inputs and outputs of the ECB separately from the data lines Digital input and output are shared with the flow control lines RTS DTR CTS DSR but they are not flow control They give the ability to send digital data from one ECB to another without interpretation by the ECBs themselves They can also provide information to the device they are connected to about the status of low power modes m rts Allowed values are none and passthrough dtr Allowed values are none and passthrough RTS and DTR are output lines When set to passthrough the status of these lines will be forwarded to the ECB unit specified by the socket option described below When set to none they d
82. ticular radio type being used Following are some common settings that might be found for radio configuration a network name Determines the network to which the ECB device will be connecting Alphanumeric values may be used in this field ESSID Extended Service Set Identifier where the service set is the wireless network to which the ECB will be connecting Alphanumeric values may be used in this field station name Naming of an individual ECB device client is done in this field Any alphanumeric name may be used MAC address Media Access Control is a unique alphanumeric address that defines each node of the network This address is predefined by the manufacturer Valid values for this setting are detect save this will make the ECB assume the MAC address of the device on the ECB s ethernet port when the ECB is first powered on dynamic this will make the ECB assume the MAC address of the device on the ECB s Ethernet even if the device is changed built in this will use the ECB s built in MAC address otherwise a specific MAC address can be specified by typing in the 12 character MAC address without the colons for example to specify MAC address 01 23 45 67 89 ab use 0123456789ab Note that when using the ECB for wired to wireless Ethernet bridging detect save or dynamic should be used Terminal Configurator a transmit rate Data rate at which the radio transmits is set by this field Valid values are radio dependent a enable en
83. tion screen will appear This screen allows you to insert a connection name into the Name field This name can be any alphanumeric combination In addition the Connection Description screen has an Icon field Leave the highlighted icon at its default setting Click OK to proceed using Hyperterminal Use the Cance button to terminate Hyperterminal The Phone Number screen appears next The Country Code Area Code and Phone Number fields should be blank by default Leave these fields at their default settings In the Connect Using field choose the COM port that you plugged the RS 232 cable into from the pop up box options Click OK The COMx Settings screen will appear Select 9600 in the Bits per second field Leave the default of 8 selected for the Data Bits field Parity should be left at its default of None The Stop bits setting should be left at its default of 1 A Terminal Configurator 15 Choose None for the flow control option NOTE The serial port settings needed for use by the Terminal Configurator will always be exactly as described here regardless of the General Serial Settings Chapter 8 Click OK after all of the COM settings have been chosen The next screen will appear blank To bring up the Configuration Utility insert one end of an extended paper clip into the small hole labeled Config located next to the Serial port on the ECB to push the configuration button Figure 10 The Terminal Configurator will
84. tructure or ad hoc mode When performing serial line replacement data is exchanged using one of two protocols RMP Pipe TCP Pipe RMP Pipe is generally used in situations that require real time or high reliability data transfer TCP Pipe is useful in situations where ECBs are moving in and out of range from each other RMP Pipe is preferable for most serial line replacement applications RMP Pipe For applications where an RS 232 serial cable is being replaced by a pair of ECB units or when ECB units are being used to form a broadcast topology the RMP Pipe protocol should be used In the RMP Pipe protocol the ECB accepts a stream of data at its serial port and transmits it over the network to one or more receiving ECB units When the data arrives at the receiving ECB it is sent is out the serial port of that ECB The RMP Pipe protocol sends data to the receiving unit as though the ECB units were directly connected via serial cables The data is not filtered or interpreted by either of the ECB units This protocol is most useful if the ECB is to be used as a drop in replacement for a serial cable The RMP Pipe protocol has several configuration options that are designed to optimize data throughput and minimize packet loss according to the needs of your particular system Configuring RMP Pipe 1 Complete the Basic Radio Configuration instructions described in Chapter 5 NOTE If you are replacing a serial line or serial network with two o
85. try refers to non existent section Xxxx yyyy zzzz entry does not exist Xxxx yyyy zzzz entry is invalid Xxxx lt yyyy zzzz gt Unable to add route Xxxx file does not exist Section named yyyy in configuration file named xxxx was missing Save your current configuration if applicable Reset the ECB units configuration to Factory Defaults Reset the ECB Restore configuration if applicable Entry zzzz refers to a section that is not located in file xxxx Save your current configuration if applicable Reset the ECB units configuration to Factory Defaults Reset the ECB Restore configuration if applicable F gt Entry zzzz in section yyyy of file xxxx was missing Save your current configuration if applicable Reset the ECB units configuration to Factory Defaults Reset the ECB Restore configuration if applicable ir Entry zzzz in section yyyy of file xxxx contains an invalid value Check the entry in the configuration for zzzz If you cannot find zzzz in the ECB Configuration Utility program you may have to use the serial port or Telnet configuration menus See Appendix A for details Route values are out of range compared to the interface values Set the route value to automatic If automatic does not work for your ECB check the values you set for the route to make sure they correspond to your other IP parameters Configuration file could not be found Reset the configuratio
86. ttons Again as with the UART settings flow control only works when both devices are using the same settings For example if you are connecting to a device that is using RTS CTS hardware flow control set the ECB hardware flow control settings to RTS CTS Serial Packets The parameters under the Packets tab control the serial to network packet conversion process Most users will not need to change the serial packet parameters These parameters control the way that data received on the serial port is divided into Ethernet packets The Ethernet packets are sent to a serial application network connection For specific information about the effects of the serial packet parameters see Appendix B 9 Configuring Wireless Printing to a Serial Printer This chapter describes how to configure the 3Com ECB to enable wireless printing to a serial printer NOTE If you have an Ethernet printer this chapter does not apply To connect to an Ethernet li printer follow the instructions for configuring a wireless Ethernet bridge in Chapter 6 The LPD protocol requires an operating system such as Windows and Linux that supports LPD to a remote host The LPD server on the ECB uses a uni directional protocol wherein data is received via a network connection and sent out the serial port to the printer Data received from the serial port is ignored This means the ECB ignores data received from the printer except for software flow control characters re
87. ult value is Hello Oxd Oxa The double quote marks are a part of this value unlike in some previous examples The item in quotes and the ASCII values together make up the data to be written This example would cause 8 bytes to be written to the socket these are in hexadecimal 0x48 0x65 Ox6c Ox6c Ox6f 0x21 OxOd OxOa In fact the data could have been specified on this line by using exactly those eight hexadecimal values instead of as a combination of string and hex serial connect data The format is the same as in socket connect data This causes data to be written to the UART once a connection is successful serial disconnect data This causes data to be written to the UART when the network connection has been closed This data is appended to any data already in progress The closing of the socket will not cancel UART transmission of any data already received over the socket The format of this data is the same aS in socket connect data serial fail data If the socket connection were to fail this causes data to be written to the UART This should only happen in the case of a connect type where the remote machine was unavailable or refused the connection However this value may be used to catch listen problems should any software problem occur The format is the same as in socket connect data Bridged Ethernet lan0 hardware Settings for the actual ECB hardware are determined under this category This category varies depending on the par
88. unning terminal emulation software Some common examples of terminal emulation software include Hyperterminal Procomm and Telix Configuration using a direct serial connection can be performed at any time regardless of the current ECB settings The Terminal Configurator can also be used over a Telnet connection When using a Telnet connection the unit communicates using TCP IP with a computer running a Telnet program A Telnet connection can be used to configure ECB units outside of your local area network when the configuration utility cannot be used because the TCP IP communication is route able Establishing a Direct Serial Connection This method of configuring and managing an ECB uses a Serial cable connected from the ECB to a computer running terminal emulation software Hyperterminal is one of the most widely used terminal emulation programs because it is standard software included with all recent Windows based PC s Use the following instructions to configure your ECB using the Hyperterminal program 1 Complete steps 1 10 of the hardware installation procedure in Chapter 3 2 Connect a serial cable to your computer s serial port Make note of the PC s COM port you plugged this cable into Plug the opposite end of the serial cable into the Serial port on the ECB On your desktop click the Start icon Click Programs Click Accessories Click Hyperterminal Double click the file labeled Hypertrm exe The Connection Descrip
89. ure 27 amp Conference Room File Help A N UART Flow Control Protocol TCP Pipe Packets AN m Protocol C RMP Pipe TCP Listen Port TCP Connect Port Telnet C LPD Radio Serial Network Close Reload from Unit Update and Reset Unit 7 Click the TCP Pipe tab Figure 28 Figure 28 CA E Room Fie Help S W UART Flow Control Protocol TCP Pipe l Packets Listen on port 4000 IV Reconnect after shutdown Connect to IP fi 0 10 10 129 Connect to port 4000 IV Reconnect after shutdown Radio Serial Network Close Reload from Unit Update and Reset Unit 8 Set the Listen on port number for each unit to match the Connect to port number of the opposite unit The defaults for both of these ports are set to 4000 ensuring a correct configuration if both ECBs are left at the default value 10 Serial Line Replacement 9 Enter the IP address of the opposite unit in the Connect to IP field There are twoReconnect after shutdown check boxes which are checked by default for both the listening port and connecting port numbers This feature allows the ECB units to re establish communication after one of the ECB units has lost communication with the other For example if one of the ECB units is power cycled or loses radio communication for a time the unit will reconnect only if this feature is enabled 10 Click Update And Reset Unit 11 Configuring the ECB as
90. uttons at the bottom of the screen Close Reload From Unit and Update And Reset Unit The Close button will close the current configuration screen The Update And Reset Unit button uploads the parameters from the configuration utility to the ECB and resets it so that the changes take effect Before this is complete a syntax check of all parameters occurs If the check is not successful an error message will appear in the GUI Message Log describing the errors and their location The Reload From Unit button allows you to discard the changes you have made to the configuration and reload the current configuration from the ECB to the configuration utility 4 Configuration Utility Features Figure 12 NewOffice2 File Help ry CoN Radio Serial Network 3Com Corporation http 4 www 3com com Firmware version 0 00 IP address 10 0 0 123 Configuration Utility 1 0 Close Reload from Unit Update and Reset Unit The Configuration screen has a File menu that will allow you to m Save or load a configuration Reset the ECB to factory defaults Set a new password or clear it Access a view of the log files Update the ECB firmware Saving a Configuration Using the ECB Configuration Utility you can save the settings of the ECB to a local file This feature allows you to restore settings to a known state or easily configure multiple ECB units with the same settings 1 Begin by clicking the Update And Reset Unit button This
91. wer properly Verify that all physical connections are securely in place Contact Customer Support if the problem persists Configuration or software alert condition Check the System Event Log to determine the cause and refer to Section 13 2 Event Log Error Table for details Use the Clear Event Log option to clear the event log and turn off the status light Invalid connection to Ethernet Verify that both ends of the cable are plugged in securely If the ECB is attached to a hub a crossover Ethernet cable must be used If the ECB is attached directly to an Ethernet device i e a PC or Ethernet printer it must be a straight through cable Verify that you are using the correct cable If you are using the correct cable verify that you are connecting the ECB to a 10BASE T Ethernet device The ECB does not support 100BASE T The PC Card is not linking to the access point Verify that the ESSID is set to match the access point ESSID Verify that the PC Card is fully inserted in the socket 13 Troubleshooting Event Log Error Table 5 lists event log errors All entries in the event log are preceded by a number This number is a timestamp used by Customer Support but is not relevant to looking up items in Table 5 Table 5 Event Error Log Error Code Description UART Error No Rx Buffer Available FLASH failure Unable to read or write configuration Initialization of interface lanO failed Da
92. which you obtained the Software and Documentation if the other party agrees in writing to accept and be bound by the terms and conditions of this Agreement If you transfer the Software and Documentation you must at the same time either transfer all copies of the Software and Documentation to the party or you must destroy any copies not transferred Except as set forth above you may not assign or transfer your rights under this Agreement Modification reverse engineering reverse compiling or disassembly of the Software is expressly prohibited However if you are a European Union EU resident information necessary to achieve interoperability of the Software with other programs within the meaning of the EU Directive on the Legal Protection of Computer Programs is available to you from 3Com upon written request EXPORT RESTRICTIONS The Software including the Documentation and all related technical data and any copies thereof collectively Technical Data is subject to United States Export control laws and may be subject to export or import regulations in other countries In addition the Technical Data covered by this Agreement may contain data encryption code which is unlawful to export or transfer from the United States or country where you legally obtained it without an approved U S Department of Commerce export license and appropriate foreign export or import license as required You agree that you will not export or re export the Technica
93. will ignore the ECB unit therefore the unit will not be found on the network A Terminal Configurator li NOTE Having this refresh period active will not hamper the performance of the ECB RS 232 Port uart0 hardware RS 232 serial UART configurations found on all UARTS m baud This selects the data transfer rate of the RS 232 serial port The baud rate can be anywhere between 112 5 and 115 200 bps All standard rates 300 1200 2400 9600 19200 38400 57600 and 115200 are clocked precisely but values in between will be rounded to the closest possible hardware setting NOTE Closest possible hardware setting does not mean that the value will be rounded to one of the standard rates The ECB s UART is fully capable of operating at non standard speeds The resolution of possible baud rates is smaller at lower baud rates than at higher baud rates data bits In a UART character frame this selects the number of bits that are used to transmit data Possible values are 7 and 8 parity This sets the parity used in the UART character frame to check for correct data transmission Options are none odd and even stop bits Selecting the number of bits used to represent an end of character bit in the UART frame The value can be 1 or 2 software The software section is used to control the receiving and sending of bytes over the serial port Proper setting of these values can significantly enhance the efficiency of data transmi
94. will synchronize the parameters in the ECB with those in the configuration utility your changes to both a local file and the ECB itself you should always perform Step 1 and click Update il NOTE The saved parameter values are those currently in the configuration utility To ensure you save And Reset Unit before saving your configuration 2 Go to the File menu of the ECB Configuration Utility main screen 3 Select Save Configuration 4 Use the dialog box Figure 13 to navigate to the directory where you would like to save the current configuration The default path is the ECB_Config program directory Click Open In this case the Open button is used to save the file Configuration Utility Features Figure 13 Look in E ECB_Config amp l RemoteServer cig fa WwWirelessPrinter cfg File name JECB_Config ctg Files of type Jal Ci 7 Cancel J Open as read only Loading a Configuration The ECB Configuration Utility will allow you to easily reload a saved file to the currently selected ECB Click on the File menu Select Load Configuration Use the dialog box Figure 14 to navigate to the directory which contains the saved configuration you wish to upload Choose the desired configuration file and click Open The loaded parameters will now be displayed in the configuration utility but have not been uploaded to the ECB To activate the parameters click Update And Reset Unit NOTE If the PC Card
95. y and enforceability of any of the remaining provisions shall not in any way be affected or impaired and a valid legal and enforceable provision of similar intent and economic impact shall be substituted therefor ENTIRE AGREEMENT This Agreement sets forth the entire understanding and agreement between you and 3Com and supersedes all prior agreements whether written or oral with respect to the Software and Documentation and may be amended only in a writing signed by both parties Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason please contact the 3Com subsidiary serving your country or write 3Com Corporation Customer Support Information 5400 Bayfront Plaza Santa Clara CA 95052 3Com Corporation 5400 Bayfront Plaza P O Box 58145 Santa Clara CA 95052 8145 408 326 5000 Copyright 2001 3Com Corporation All rights reserved 3Com is a registered trademark of 3Com Corporation

Product Manual

Contents

Download Pdf Manuals

Related Search

Related Contents