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20

C

HAPTER

 1: O

VERVIEW

 

OF

 D

IGITAL

 W

IRELESS

 N

ETWORKING

PPP Connection

Connecting an AP and a computer with a direct serial link requires the use of a 
null-modem serial cable.

Connecting an AP and computer with modem devices requires the use of 
straight-through cables between the APs and modems. Using modems requires 
a telephone line for as long as the link remains active.

When using a modem connection, one AP represents the originating AP and the 
other represents the answering AP. When using a PPP link, do not use the serial 
port to access the UI. Access to the UI requires establishing a Telnet session with 
the AP.

Содержание AirConnect

Страница 1: ...AirConnect 11 Mbps Wireless LAN Access Point User Guide Version 2 0 Part No 09 2045 000 Published December 2000 ...

Страница 2: ...TED 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 i...

Страница 3: ...rea 16 802 1d Spanning Tree Support 16 Site Topography 17 Site Surveys 17 Theory of Operation 17 MAC Layer Bridging 17 Filtering and Access Control 18 DHCP Support 18 Media Types 18 Bridging Support 19 PPP Connection 20 Direct Sequence Spread Spectrum 21 Wireless Client Association Process 21 Roaming 22 Extended Roaming 22 Security 23 Supporting CAM and PSP Stations 23 HTTP HTML Web Server Support...

Страница 4: ...ogy 35 Setting Up Wireless Clients 35 3 MONITORING STATISTICS Introduction 37 System Properties 37 Interface Statistics 37 Forwarding Counts 37 Ethernet Statistics 38 Radio Frequency Statistics 38 Miscellaneous Statistics 39 Analyzing Retries 39 Clearing Statistics 40 Known APs 40 4 CONFIGURING THE ACCESS POINT USING A WEB BROWSER Introduction 41 Gaining Access to the User Interface UI Using a Web...

Страница 5: ...m 51 Configuring the Answering Modem 52 Filtering 52 Filtering to Forward Packets 52 Filtering to Discard Packets 52 Removing Filtered Packet Types Networking Protocols 53 Disabling Type Filtering 53 Updating AP Firmware 53 Special Functions 54 5 MONITORING WIRELESS CLIENTS Introduction 55 Wireless Clients 55 Clearing Statistics 56 6 CONFIGURING THE AP USING THE ASCII INTERFACE Introduction 57 Gai...

Страница 6: ...ireless Clients 71 Removing Disallowed Wireless Clients 71 Type Filtering 71 Adding Filter Types 71 Removing Filter Types 72 Controlling Type Filters 72 Clearing Wireless Clients from the AP 72 Setting Logging Options 72 Manually Updating AP Firmware 73 Update using TFTP 74 Updating using Xmodem 74 Auto Upgrade all APs Via Messaging 76 Performing Pings 77 Extended Roaming Using MD5 Authentication ...

Страница 7: ... Wide Web Site 83 3Com FTP Site 83 Support from Your Network Supplier 83 Support from 3Com 84 Returning Products for Repair 85 INDEX WARRANTY AND REGULATORY COMPLIANCE 3Com Corporation Limited Warranty 91 Regulatory Compliance Information 93 3Com End User Software License Agreement 94 ...

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Страница 9: ...nd hardware a serial cable a power adapter and associated power cables and one CD the AirConnect Installation CD AirConnect Network Topologies To better understand how the various AirConnect products work together to create a wireless network it might be helpful to depict a few of the possible AirConnect network topologies The topology used in a particular environment depends on many factors such ...

Страница 10: ...xist as separate networks at the same site without interference using different network identifiers wireless LAN service areas The wireless clients can move within the coverage area of one AP and remain connected or can roam if configured to do so to the coverage area of a different AP and communicate with the wireless clients associated with that AP ...

Страница 11: ...t and wireless network As shown in the next figure the AP wired to a network server or LAN through an Ethernet cable serves as a network node and provides the link between the server and the wireless clients The wireless clients can move freely throughout the coverage area of the AP while remaining connected to the server ...

Страница 12: ...tween Ethernet wired LANs and AirConnect wireless networks Essentially replacing the cabling of wired networks the AP delivers transparent connectivity between wireless clients or between Ethernet networks and wireless clients The AP provides an 11 Mbps data transfer rate monitoring Ethernet traffic and forwarding appropriate Ethernet messages to wireless clients over the network It also monitors ...

Страница 13: ...to automatically select the strongest of the radio signals picked up by the antenna AP Features Built in diagnostics including a power up self check Wireless MAC interface Upgradable firmware 10BASE T Ethernet port interface with full speed filtering Power supply IEC connector and a country specific AC power cable PC AT Serial Port Interface Built in antenna diversity Support for up to 63 wireless...

Страница 14: ...that provides the base or center frequency The digital data signal is superimposed on the carrier signal in process called modulation The radio signal then travels through the air as electromagnetic waves A receiving antenna in the path of the waves absorbs them as electrical signals The receiving device demodulates the signal by removing the carrier signal This demodulation results in the origina...

Страница 15: ...e The AP establishes an average communication range with wireless clients called a Home Service Area HSA or cell When a wireless client is in a particular cell the wireless client associates and communicates with the AP in that cell Each cell has a Home Service Area Identifier HSA_ID Under the 802 11 standard the MAC address of an AP represents its HSA_ID The wireless client recognizes the AP it a...

Страница 16: ...pdates the association table Roaming is invisible to the user Wireless LAN Service Area The network administrator assigns the wireless LAN service area for the APs in a WSA A valid wireless LAN service area is an alphanumeric case sensitive identifier of up to 32 characters All nodes within one LAN use the same wireless LAN service area to communicate on the LAN Multiple wireless LANs can coexist ...

Страница 17: ...ons and responds to wireless client association requests MAC Layer Bridging The AP listens to all packets on all interfaces and builds an address database using the unique IEEE 48 bit address MAC address An address in the database includes the interface media that the device uses to associates with the AP The AP internal stack interface handles all messages directed to the AP The AP uses the datab...

Страница 18: ...ation and firmware filenames Because BOOTP and DHCP interoperate the one that responds first becomes the server that allocates information The DHCP client automatically sends a DHCP request to renew the IP address lease as long as the AP is running This parameter is programmed at the DHCP server For example Windows NT servers typically are set for 3 days The AP can optionally download two files wh...

Страница 19: ... to communicate with the other device using the Data Link Bridging DLB protocol An AP using DLB communicates on the MAC level and receives and transmits Ethernet frames If the other device does not support DLB the AP attempts to communicate using Internet Protocol Control Protocol IPCP An AP using IPCP communicates on the IP level and receives and transmits IP packets The PPP implementation in the...

Страница 20: ...h modem devices requires the use of straight through cables between the APs and modems Using modems requires a telephone line for as long as the link remains active When using a modem connection one AP represents the originating AP and the other represents the answering AP When using a PPP link do not use the serial port to access the UI Access to the UI requires establishing a Telnet session with...

Страница 21: ...less clients it services Wireless clients associate with an AP based on the following conditions Signal strength between the AP and wireless client Wireless clients currently associated with the AP Wireless client Supported Rate see table below Positive match between the wireless client and encryption keys optional Positive wireless client authorization by the Access Control List optional Wireless...

Страница 22: ...me contains fields for the current direct sequence channel The wireless client uses these fields to resynchronize to the AP Roaming The AirConnect Roaming feature enables a wireless client on the Internet to move from one AP to another within a single subnet The scanning and associating process continues for active wireless clients This allows the wireless clients to find new APs and discard out o...

Страница 23: ... changes each time the wireless client moves to another foreign link It can also be viewed as an exit point of a tunnel between the wireless client home agent and the wireless client itself Security Security involves two distinct areas authentication and privacy Authentication ensures that only authorized users access the wireless network Privacy ensures that communication between authenticated us...

Страница 24: ...ansmissions HTTP HTML Web Server Support Hypertext Transfer Protocol HTTP is the native language of the World Wide Web The HTTP protocol makes requests from browsers to servers and responses from servers to browsers This function provides the user with a Web based format for configuration and firmware download Web pages are written in Hypertext Markup Language HTML HTML allows the user to create W...

Страница 25: ...stations of some significant event that occurred on the network The management station queries all stations for details of each specific event including what when and where the event took place and the current status of the node or network The format or structure is defined in the SNMP protocol The MIB defines what and who monitors the variables Using SNMP The AP includes SNMP agent versions acces...

Страница 26: ...ice to connect directly to a DTE device with a null modem serial cable The direct serial access method requires a communication program with ANSI emulation Refer to Using a Direct Serial Connection on page 58 for more information Dial Up Access The dial up access method requires a communication program with ANSI emulation on the remote terminal or PC The terminal or PC dials to an AP with a modem ...

Страница 27: ...tion Verify the environment has a temperature range between 20 C to 55 C If you attach the AP to a wired Ethernet make sure that the AP is on the same subnet Package Contents The AP package contains the following items 1 access point Check the AP model number on the bottom of the unit against the model listed on the packaging 1 power adapter 1 mounting bracket and hardware 1 PowerBASE T module 1 n...

Страница 28: ...net hub Normal 10BASE T limitations apply 1 Plug the data cable with an RJ 45 connector into the AP Ethernet port 2 Plug the other end of the data cable into the LAN access port possibly a hub or wall connection 3 Add additional APs as needed Single Cell The single cell connection option allows a single AP to connect wireless clients without a wired network Wireless clients appear as peers as in a...

Страница 29: ...s the rounded ends of the flanges into both mounting holes and then push forward until the flanges slide into the holes and the bracket locks into place 3 Mount the AP using two screws not provided inserted into the wall through the holes on the outer flanges of the mounting bracket Or 1 Using the mounting bracket shown below as a template mark the location of the two flanged holes in the center o...

Страница 30: ...mly press the rounded ends of the flanges into both mounting holes and then push forward until the flanges slide into the holes and the bracket locks into place 3 Attach both t rail grips to the outer flanges of the mounting bracket with the t rail wingnuts Do not tighten the wingnuts completely the t rail grips should remain loose 4 Align the t rail grips with the ceiling t rails and attach them ...

Страница 31: ...tlet The AP is functional when the Status indicator on the front of the AP flashes consistently and the Wireless LAN Activity indicator begins flickering see LED Indicators for more details This indicates that the AP is ready for wireless clients to associate with it The AP operates without user intervention after setup See the AP LED indicators to verify that the unit operates properly ...

Страница 32: ...ter cable to the power supply 2 Connect the power adapter cable from the power supply to the PowerBASE T module See item 1 in the following figure 3 Connect the power cord to the power supply 4 Plug the power cord into a power outlet When the PowerBASE T module receives power the green LED on top lights up 5 Connect an Ethernet cable from the Ethernet port to your network hub or switch See item 2 ...

Страница 33: ...ty LED Off On Blinking Power No power Power on During boot sequence LAN No power No network connection Link to hub but no network traffic LAN traffic is detected The heavier the traffic the faster the blinking WLAN No power No radio signal No associated wireless clients Radio traffic is detected The heavier the traffic the faster the blinking ...

Страница 34: ...s Identify wired network problems 3 No operation Verify AP configuration via Telnet PPP or UI Review procedures for Ethernet and serial connection of the AP Review AP firmware revisions and update procedures Verify network configuration by ensuring that there are no duplicate IP addresses Power down the device in question and ping the assigned address of the device Ensure no other device responds ...

Страница 35: ... erratic performance Check wireless client and RF communications range Check antenna connectors and cabling Verify the AP is using the primary antenna connection for single antenna use Verify that antenna diversity setting for AP is appropriate If using one antenna the setting is Primary Only if using two antennas the setting is Primary and Secondary Verify network traffic does not exceed 37 of ba...

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Страница 37: ...ese packets Packet forwarding statistics for each interface Ethernet PPP RF Performance information for each interface in packets per second PPS and bytes per second BPS To view Interface Statistics select Statistics Interface Statistics You can dynamically update this information by using the Refresh option Click Start Refresh at the bottom of the page to update the values approximately once ever...

Страница 38: ...ds Click Stop Refresh at the bottom of the page to terminate dynamic updates Select any other item or click Access Point at the top of the navigation pane to escape from the Ethernet Statistics page Statistic Definition Packets Seen Packets received on the Ethernet interface Packets Forwarded Packets forwarded from the Ethernet interface to other interfaces Discarded No Match Packets discarded bec...

Страница 39: ...wered off Any one of these incidents causes both devices to suspend transmitting and retry later Too many retries can indicate a system problem To view retry severity do the following 1 Select Statistics from the Main Menu 2 Select Retry Histogram The display indicates the packets that experience retries up to 15 retries 3 Press any key to return to the Main Menu Type Name Definition WNMP Echoes E...

Страница 40: ...s list Select Show Known APs from the Main Menu to display the Known Access Points window and to review information about the APs Category Description MAC Address Unique 48 bit hard coded Media Access Control address known as the station identifier IP Address Network assigned Internet Protocol address An x appearing after the IP address indicates the AP on this line is not using the 802 11 protoco...

Страница 41: ...avaScript Help File Access A network Web server is required to access the Help file from the AirConnect Access Point Configuration Management System Web pages This procedure is intended for Microsoft Internet Information Server The network Web server can be different If this is the case some of the procedures will differ Setup Network Web Server Help File Access To create the Help file on a networ...

Страница 42: ...MLHelp_Install32_102 exe file The Unpacking WAP HTML Help window displays indicating that the file is decompressing and the installation wizard is about to run The WAP HTML Help Installation Setup dialog box displays 3 Follow the on screen instructions to install the Help file on the local workstation hard disk To access the Help file located on the local workstation follow the procedure below 1 C...

Страница 43: ...ess the AP UI via a Web browser from a workstation do the following 1 Set the IP address of the workstation and the subnet mask from the NCPA properties window The workstation in this case is the workstation or notebook computer running the Web browser The informational message instructs you to reboot the system for property changes to take effect 2 Ping the AP to verify the connection by typing t...

Страница 44: ... access help from any AirConnect Access Point Configuration Management System Web page To do so select Help from the top right hand corner of any page You can change the caching options in the Easy Setup and Configuration pages To access the Easy Setup and Configuration pages follow the procedure below 1 Select Easy Setup and Configuration The Username and Password Required dialog box displays 2 T...

Страница 45: ...uring Easy Setup To do so follow this procedure 1 Select Easy Setup Easy Setup 2 Click Add Delete Gateways The Easy Setup Add Delete Gateways page displays 3 Enter the IP addresses of up to seven additional APs 4 Click Save Settings to write your changes 5 Click Clear Entries to remove your changes and return the default settings Parameter Description Unit Name AP name IP Address Network assigned ...

Страница 46: ...ociate with the AP and click Add Wireless Client 5 Click Clear Entry if you decide not to allow the wireless client association with the AP 6 Repeat step 4 for as many wireless clients as you wish 7 Click Security Home Page when you have completed your entry on this page Adding or Deleting a Range of Allowed Wireless Clients 1 Select Configuration Security 2 Select Enabled for Access Control 3 Cli...

Страница 47: ...ctions screen to have your encryption settings take effect Refer to Reset AP in the table on page 54 in the Special Functions section Encryption Upgrade Access Codes If you are upgrading the wireless client from 40 bit encryption to 128 bit encryption you must enter an access code to perform the upgrade Until the access code is entered you can only enable or disable 40 bit encryption An access cod...

Страница 48: ...hernet activity If the Ethernet Timeout is disabled when the Ethernet connection is broken the AP clears the wireless client table and disables the RF interface until the Ethernet connection is restored If the Ethernet Timeout is enabled when the Ethernet connection is broken the AP sets the time out value to zero 0 and attempts to associate with another WLAP in the network 7 Enter a value in seco...

Страница 49: ...oad of a new operating image over the network instead of using a local nonvolatile drive All multicast downstream data packets that match the top 32 bits of the multicast mask are forwarded immediately instead of being queued for transmission at the next DTIM interval 6 Enter the time between beacons in milliseconds for Beacon Interval The default is 100 milliseconds 7 Select Enable or Disable for...

Страница 50: ...word of up to 31 characters for Read Only Community This password is for and identifies users with read only privileges 4 Enter a user defined password of up to 13 characters for Read Write Community This password is for and identifies users with read write privileges This password should be the same password as the System Password used to gain access to the System Configuration page 5 Enter the I...

Страница 51: ...iguration PPP Modem The PPP Modem Setup page displays 2 Select Enabled for PPP Interface 3 Select PPP for Serial Port Use 4 Select Originate for Modem Connect Mode 5 Select Yes for Modem Connected 6 Select Auto for Dialout Mode 7 Select the appropriate mode for Modem Speaker This setting sends a command to the modem to turn the modem speaker on or off The default is On 8 Type the telephone number ...

Страница 52: ...ward or discard particular types of packets TCP IP IPX Or you can allow all traffic through by disabling the filtering option 1 Select Configuration Filtering The Filtering Setup page displays 2 Determine what type of filtering you want to set up and select the appropriate procedure below Filtering to Forward Packets To configure the AP to forward packets of particular types do the following 1 Cli...

Страница 53: ...The TFTP server can be running on a 3Com AirConnect device To update the AP firmware do the following 1 In the Main Menu select Configuration under the Access Point link in the left frame of the browser window 2 Under Configuration select Firmware 3 Enter your password when prompted the default is comcomcom The Firmware Download page displays showing the values for Firmware Filename HTML Filename ...

Страница 54: ...h the AP are active Clear the wireless client association table for diagnostic purposes Clear wireless clients from an AP if the AP has many wireless client associations that are no longer in use The AP removes the wireless clients associated with it Wireless clients cleared from an AP will attempt to reassociate with the AP or another nearby AP Clear Access Control List ACL Individual Clears the ...

Страница 55: ...e wireless client IP Address is also shown in the Foreign Agent Table and Regular screens of the new foreign AP to tell the new AP where to expect packets from for newly associated wireless clients The AP Regular screen shows the wireless clients associated locally on the same subnet 1 Select Wireless Client from the Main Menu 2 Use the Tab or arrow keys to highlight the desired screen 3 Press Ent...

Страница 56: ...e Associated current association on radio interface Away unit is no longer associated with AP Power Mode Wireless client power mode CAM PSP or N A Station ID The IEEE 802 11 specification requires that each AP assign a station ID to all associated wireless clients regardless of the wireless client power mode PSP or CAM Begin Current Assoc Time at which current association began hh mm ss Supported ...

Страница 57: ...IP address Telnet xxx xxx xxx xxx 2 If desired enter a password case sensitive when prompted The default is password is comcomcom Before configuring the AP you should upgrade the AirConnect firmware to the latest version Refer to Manually Updating AP Firmware on page 73 The dot in front of certain parameters functions or options Antenna Selection Primary Only indicates these items update to all AP...

Страница 58: ...wing keystrokes to navigate through the UI menus and windows depending on the terminal emulation For terminal emulation programs that do not support arrow or function keys use the control character equivalents The following conventions also apply to navigating windows and menus To select menu items press the key corresponding to the bold letter for the item case sensitive hot key Press Enter to se...

Страница 59: ...rd Enter System Password 2 If a password has been set enter it now case sensitive The default password is comcomcom If the password is correct the AP displays the Main Menu with the Enter Admin Mode menu item changed to Exit Admin Mode If the password is incorrect the AP continues to display the Main Menu with the Enter Admin Mode menu item Prompt Description OK Registers settings but does not sav...

Страница 60: ...ord and press Enter 4 Press Tab to highlight the Save F1 function at the bottom of the screen 5 Press Enter to confirm the save Configuring for Dial Up to the UI A dial up connection requires a straight through Ethernet cable between the modem and the AP The remote PC requires a modem and a communication program such as HyperTerminal The AP supports modems that use the generic Hayes Smartmodem com...

Страница 61: ... parameters Emulation ANSI Baud rate 19200 bps Data bits 8 Stop bits 1 Parity none Flow control none 5 Dial out to the AP with the appropriate telephone number No password is required 6 Press Esc to refresh the display The AP displays the Main Menu Hanging Up To hang up from the UI while a call is still connected 1 Select Special Functions from the Main Menu 2 Select Modem Hangup Setting Descripti...

Страница 62: ...configuration information to all APs with the same WLAN Service Area This option saves and updates the configuration changes for the current AP on the Known APs table The AP is reset after the configuration has been modified You can execute this option only among the same hardware platforms and same firmware versions 7 Select Cancel ESC to disregard any changes made in this window and return to th...

Страница 63: ...feature 1 Detects whether the 10Base T line goes down 2 WLAP sends a WLAP Alive BPDU on the Ethernet line every WLAP Hello Time seconds to allow WLAPs on the Ethernet line to detect its existence 3 WLAP tracks the WLAP Alive BPDU If the BPDU is missing for WLAP Hello Time seconds the WLAP state changes to WLAP Lost on Ethernet Once the WLAP Alive BPDU is detected the WLAP resets and starts over Wh...

Страница 64: ...follow the procedure below 1 Select Set RF Configuration from the Main Menu to display the RF Configuration window 2 Configure the settings as required The table below describes the Configuration parameters Web Server Enables the use of a Web based browser to access the UI instead of HyperTerminal or Telnet applications An AP Reset is required for this feature to take effect Access Control Specifi...

Страница 65: ...h the top 32 bits of the multicast mask are forwarded immediately instead of being queued for transmission at the next DTIM interval Beacon Interval The time between beacons in milliseconds The default is 100 Accept Broadcast WSA_ID Allows the AP to respond to any station sending probe packets with the industry standard broadcast WSA If Enabled this feature allows industry standard devices interop...

Страница 66: ...onfiguration window will be generated 2 Set the Port Use parameter to UI 3 Verify that the Modem Connected parameter setting is No 4 Set the Connect Mode parameter to Answer Establishing a Connection To establish the PPP port connection on the AP do the following 1 Select Set System Configuration from the Main Menu 2 Set the PPP Interface to OFF 3 Press the space bar or left right arrows to change...

Страница 67: ... Configure the other required settings the same as on the originating AP Initiating Modem Connection To manually initiate dial out from the originating AP to the answering AP do the following 1 Select the Special Functions Menu from the Main Menu 2 Select Modem Dialout The AP dials out and attempts to make a connection according to parameters set in the Serial Port Configuration If dial out fails ...

Страница 68: ... operations Read Only Community User defined password string up to 31 characters identifying users with read only privileges Read Write Community User defined password up to 13 characters for users with read write privileges Ensure the password used matches the System Password used to gain access to the System Configuration screen Trap IP Address Trap manager IP address All Traps Enables or disabl...

Страница 69: ...s Control List from the Main Menu The prompt below displays Address Type range individual 2 Press up down arrows to toggle between range and individual Range of Wireless Clients To select a range of MAC addresses follow the procedure below 1 Type the minimum MAC address as the top value 00 0A F8 F0 01 01 2 Press Enter to accept the value 3 Press down arrow to select the maximum value 4 Type the ma...

Страница 70: ...information to all APs with the same WLAN Service Area This option saves the configuration changes for the current AP and sends two WNMP messages to all other APs on the Known APs table to update their configurations and reset them after the configuration has been modified You can execute this option only among the same hardware platforms and firmware version Removing Allowed Wireless Clients To r...

Страница 71: ...ilter by MAC address follow the procedure below 1 Select Set Address Filtering from the Main Menu which generates the Disallowed Addresses list window 2 View the list to determine whether you would like to add or delete addresses from the list Adding Disallowed Wireless Clients To add wireless clients to the Disallowed Addresses list do the following 1 Select Set Address Filtering from the Main Me...

Страница 72: ...s client Table feature ensures that wireless clients associating with the AP are active You should only clear the wireless client association table for diagnostic purposes or if the AP has many wireless client associations that are no longer in use To clear wireless clients associated with an AP do the following 1 Select Special Functions from the Main Menu 2 Select Clear wireless client Table The...

Страница 73: ...e following A TFTP host Any computer using the Xmodem file transfer protocol The two files required for firmware updates are dsap_fw bin 3cap_htm bin Parameter Description Any Event Logging Logs all events listed in the window Security Violations Logs ACL filter or administrative password access violations MU State Changes Allows logging of all wireless client state changes WNMP Events Logs WNMP e...

Страница 74: ...ult file names are dsap_fw bin and 3cap_htm bin Verify that the path to the files is accurate 7 Enter the TFTP Server IP address in the TFTP Server field 8 Press Enter 9 Select Save Configuration to save settings 10 Select Special Functions from the Main Menu 11 Select Use TFTP to Update Access Points and press Enter which generates the following prompt Are you sure Y N 12 Type y The Telnet sessio...

Страница 75: ...heading Use XMODEM to Update Access Points Both downloads the dsap_fw bin and 3cap_htm bin files separately Make sure both files are located in the same directory before the download begins 10 Press Enter 11 Type y at the confirmation prompt which generates the following message Downloading firmware using XMODEM Send firmware with XMODEM now 12 Select Transfer from the emulation program menu bar 1...

Страница 76: ...ating each AP This interval prevents more than one AP from accessing the TFTP server at once and causing network congestion The Ethernet TFTP upgrade method requires a connection between the AP and PC on the same Ethernet segment Verify the PC has a TFTP server running on it Running the server requires third party software such as FTP PC TCP for DOS or OnNet for Windows The wireless TFTP upgrade m...

Страница 77: ...procedure below 1 Select Show Wireless Clients from the Main Menu 2 Select Regular from the Show Wireless Clients window The Wireless Clients window generates 3 Press Tab to highlight the MAC address of the station to ping 4 Press the F1 key to select Ping F1 This generates the Packet Ping Setup window 5 Enter the number of Pings 1 to 539 the Packet Length in bytes 1 to 539 and the Packet Data con...

Страница 78: ... do not need to be the same among different clients and or access points Encryption Upgrade Access Codes If you are upgrading the access point from 40 bit encryption to 128 bit encryption you must enter an access code to perform the upgrade Until the access code is entered you can only enable or disable 40 bit encryption 1 From the Hyperterminal main menu select RF Configuration 2 Press the tab ke...

Страница 79: ...e follow the procedure below 1 Select Special Functions from the Main Menu The Special Functions Menu displays 2 Select Save Configuration and press Enter The Save All APs function saves only the five parameters the precede it in the Special Functions Menu You can use this option only among the same hardware platforms and firmware versions The NVRAM stores saved configuration information To clear ...

Страница 80: ...the factory configuration defaults Restoring the factory default settings clears all configuration and statistics for an AP To restore the default configuration do the following 1 Select Special Functions from the Main Menu 2 Select Restore Factory Configuration The AP erases all user applied configuration information and replaces the factory default configuration ...

Страница 81: ... possible surface marring Radio Characteristics Frequency No of Channels Country 2412 11 US Standard 2412 13 Europe 2457 2 Spain 2457 4 France 2484 14 Japan Frequency range is country dependent within 2400 MHz to 2500 MHz Output Characteristics Radio Power Output 100mW Range Open environment Over 1000 ft 303 m Office environment Up to 80 ft 11Mbps Up to 120 ft 5 5Mbps Up to 200 ft 2Mbps Up to 300 ...

Страница 82: ...stics Ethernet Frame DIX Ethernet_II IEEE 802 3 Filtering Packet Rate 14 400 frames per second filtering and forwarding Ethernet Connection 10Base T RJ 45 Serial PC AT serial port DB9 Female RS 232 using a DTE termination 19200 bps SNMP Version 1 MIB II 3Com MIB ...

Страница 83: ... enter the following information into your FTP client Hostname ftp 3com com or 192 156 136 12 Username anonymous Password your Internet e mail address Support from Your Network Supplier If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hard...

Страница 84: ... anywhere in S Korea From Seoul Taiwan R O C Thailand 10800 61 00137 or 021 6350 1590 800 6161 463 00798 611 2230 0 2 3455 6455 0080 611 261 001 800 611 2000 Europe From anywhere in Europe call 31 0 30 6029900 phone 31 0 30 6029999 fax From the following European countries you may use the toll free numbers Australia Austria Belgium Denmark Finland France Germany Hong Kong Hungary Indonesia Ireland...

Страница 85: ... option 2 and then option 2 Australia Austria Belgium Denmark Finland France Germany Hong Kong Hungary Indonesia Ireland Israel Italy Malaysia Netherlands New Zealand Norway P R of China Phillipines Poland Portugal South Africa South Korea Spain Sweden Switzerland Taiwan R O C Thailand U K 1800 678 515 0800 297468 0800 71429 800 17309 0800 113153 0800 917959 0130 821502 800 933 486 06800 12813 001...

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Страница 87: ...nswering modem 52 dial up connection 60 filtering 52 in ASCII UI 62 PPP connection in ASCII UI 66 radio parameters in ASCII UI 64 security 46 serial port 60 configuring the AP adding wireless clients 46 in ASCII UI 63 continuously aware mode CAM 23 coverege see multiple AP network 12 D default configuration restoring 80 DHCP support 18 dial up connection configuring 60 direct serial connection 58 ...

Страница 88: ...8 trap support 25 special functions 54 specifications access point 81 network characteristics 82 output characteristics 81 physical characteristics 81 radio characteristics 81 statistic monitoring 37 statistics clearing 40 56 Ethernet 38 interface 37 miscellaneous 39 radio frequency radio frequency statistics 38 transaction transaction statistics 37 wireless clients 55 system parameters 48 configu...

Страница 89: ...ms to applicable 3Com published specifications Customer assumes responsibility for the selection of the appropriate applications program and associated 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...

Страница 90: ...Guide for telephone numbers 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...

Страница 91: ...rent from that which the receiver is connected Consult the dealer or an experienced radio TV technician for help CANADA This Class A digital apparatus meets the requirements of the Canadian Interference Causing Equipment Regulations CE MARKING AND EUROPEAN UNION COMPLIANCE Products intended for sale within the European Union are marked with the CEMark which indicates compliance to applicable Direc...

Страница 92: ...out an approved US Department of Commerce export license You agree that you will not export reexport either physically or electronically any encrypted product without an approved export license 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 co...

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