3Com Wireless 7760 11a/b/g PoE Access Point User Manual
Contents
1. 5 Follow the on screen instructions to complete the installation Reboot the computer if prompted to do so Launching the 3Com Wireless Infrastructure Device Manager To be able to configure the Access Point you need to run the Wireless Infrastructure Device Manager Go to Start gt Programs gt 3Com Wireless gt Wireless Infrastructure Device Manager If the device is working correctly the following screen should be seen 3Com Wireless Infrastructure Device Manager Wireless Wi Wireless Network a Generic1 2 Configure Refresh Choose NIC Close Help Using the 3Com Installation CD 15 Click on the Properties button to see the following screen Wireless Infrastructure Device Properties Wireless Infrastructure Device Device Name AP Device Type ICom Wireless 7760 11a b g PoE Access Point WLAN Service Area ESSID Generic1 IP Address 192 168 1 199 Subnet Mask 255 255 255 0 MAC Address 00 14 70 48 B1 40 Uses HTTPS No Directly connect to the device through its Ethernet port or console port Follow the instructions below to login into the AP Configuration screen Load a web browser and enter http 169 254 2 2 The Logon screen appears To log on to the Web interface Username type admin case sensitive Password type password Click Log On 16 CHAPTER 3 Configuring the Wireless 7760 First Time Only After you have logged in for the first time you will be2. 1 meter thick At a 2 degree angle it looks over 42 feet 14 meters thick Position devices so that the signal 8 CHAPTER 2 Installing YOUR 3Com WIRELESS 7760 Access POINT will travel straight through a wall or ceiling instead of at an angle for better reception Wall Mounting the Wireless 7760 9 Building materials can impede the wireless signal a solid metal door or aluminum studs may have a negative effect on range Try to position wireless devices and computers with wireless adapters so that the signal passes through drywall or open doorways and not other materials Wall Mounting the For convenient positioning the device comes with a cradle that can Wireless 7760 be wall mounted For additional security the Access point also comes with a locking bar which can be used with a security lock not provided to lock the Access point to the cradle after the Access point is mounted to a wall To wall mount the Access Point 1 Route Ethernet cable through the large opening in the cradle 2 Screw the cradle to a wall The figures below show a cable being routed through the large opening in the cradle and then the cradle being mounted to a wall Cradle Routing a cable Wall mounting the cradle 3 Connect Ethernet cable to the port on the front of the access point 4 Snap the access point onto the mounting bracket 10 CHAPTER 2 Installing your 3Com Wireless 7760 Access Point To install the locking bar push the l
3. Wireless Infrastructure Device Manager and Wireless LAN Device Discovery tools let you configure parameters run diagnostics backup and restore configurations and monitor performance from anywhere on the network using an embedded web server browser With Power over Ethernet PoE support the same Category 5 cable that connects your access point to the data network also provides its power A single cable installation dramatically improves your choice of mounting configurations because you no longer need to consider AC power outlet locations PoE support makes it easier than ever to overcome installation problems with difficult to wire or hard to reach locations Understanding the characteristics of the 802 11a and 802 11g standards can help you make the best choice for your wireless implementation plans 802 11a Ratified in 2002 802 11a operates at the 5GHz band and supports data rates at up to 54Mbps Because there are fewer devices in the 5GHz band there s less potential for RF interference However because it is at an entirely different radio spectrum it is not compatible with 802 11b and 802 11g 4 CHAPTER 1 Introduction The higher spectrum provides about 50m 164ft of coverage Consider 802 11a when you need high throughput in a confined space and you are m Running high bandwidth applications like voice video or multimedia over a wireless network that can benefit from a five fold increase in data throughput T
4. Finish to save the settings Click Back to return to screen 2 The System properties page allows you to define Device name location operation modes and Load Type There are 5 operation modes to choose from Access Point mode A Wireless LAN data transceiver that uses radio waves to connect a wired network with wireless station 22 CHAPTER 3 Configuring the Wireless 7760 IP Settings Wireless Workgroup Bridge mode Client Bridge mode It acts as a wireless client in the network Through this mode you can connect to an access point through this device Ad hoc mode peer to peer An Ad hoc mode allows 2 wireless clients to communicate to each other An Ad hoc network is a wireless network composed of stations without Access Points Repeater mode A repeater is placed between two access points to extend the range of your infrastructure or to overcome an obstacle that blocks radio communication Wireless Bridge mode A wireless bridge connects two separate networks operating on the 802 11 standard Load Types are either FAT Default is set to be FAT mode AP FAP AP has complete set of AP features which can work alone as an individual AP FIT FIT mode AP needs to be connected to a 3Com Wireless Switch to provide complete feature sets This setting must match the network s method of IP address assignment Choose DHCP or Static IP With Dynamic Host Configuration Protocol DHCP IP addresses are assigned System C
5. Manager Software 13 Access Point Detectton en 44 DHOP EE 11 Access Point mode acesse 21 DTIM 32 See Delivery Traffic Indication Ad hoemede eea aae 22 Message Administration 41 Advanced WAN 32 E B External Antenna ceecee 10 BackUp E 45 F Ee EE 2 e SS factory settings cceececeeeeeeeeeeeeeneeees 48 Se ey OA ea pet PAT e cade le Ee tie DD c AA aAa EE sce Maleate 46 Firmware Upgrade sses 46 COM Ports aka aii ie 48 EE 22 CONTIQUEING EE 11 Fragment Length sis cce acacia tices 33 CONTENTION E EEE leedecetes ege 37 IAPP See Inter Access Point Protocol IEEESO2 abba eiiinst 5 Installatton cccecccccceeseeeeesseeeeeeeeeeeueeeeseeens 6 Installing Software seses 12 Inter Access Point Protocol ccccccccees 34 IP SEINS bc e ee De tee AEN 23 54 Index L LED Indicators 9 Logging TE 14 Login name 12 M MAC Filtering ii cicero ee bs 43 P Package Contents 6 Pass WOTG enura o E 12 15 48 Place entosnnnonie inre re 7 Power over Ethernet 3 Q QOS EE See Quality of Service Quality of Service 35 R REDOOUING x 47 Me 22 ResbOt atued Sege eegend d tee N ART 45 RTS Thresbold E 33 S SECURITY EE 2 26 Setting UI DEE 19 Simple Network Management Protocol 42 Simple Network Time Protocol 38 SNMP See Simple Network Management Protocol SNTP See Simple Network Time Protocol SSID AARE Ele Red ea ae 25 28 Suppressed Saal 26 System Proper
6. are entitled to bug fix maintenance releases for the version of software that you initially purchased with your 3Com product To obtain access to this software you need to register your product and then use the Serial Number as your login Restricted Software is available at http eSupport 3Com com To obtain software releases that follow the software version that you originally purchased 3Com recommends that you buy an Express or Guardian contract a Software Upgrades contract or an equivalent support contract from 3Com or your reseller Support contracts that include software upgrades cover feature enhancements incremental functionality and bug fixes but they do not include software that is released by 3Com as a separately ordered product Separately orderable software releases and licenses are listed in the 3Com Price List and are available for purchase from your 3Com reseller Contact Us 3Com offers telephone Internet and e mail access to technical support and repair services To access these services for your region use the appropriate telephone number URL or e mail address from the table in the next section Telephone Technical Support and Repair 51 Telephone Technical Support and Repair To obtain telephone support as part of your warranty and other service benefits you must first register your product at http eSupport 3Com com When you contact 3Com for assistance have the following information
7. asked to select your country from the drop down menu System Status System Summary The Web interface has been designed to enable you to easily perform advanced configuration tasks and view information about the AP After you click Logon from the Log On Screen you ll see the system status page on the screen The System summary page is the default page that will pop up once you successfully log in The system summary page shows all the configuration information about your AP man Wireless 7760 11a blg Access Point S System Status gt System Sum Access Point yee my System Status System Information System Summary Wiraless Staton Uist Bent Lag List System Configuration Setup Wired Spatom Properties IP Settings Weeer Natwork VANS Link Settings VAS Sept Senings Wireless Advanced Settings Services SIE System Status 17 Wireless Station List Through this page you can easily identify the adjacent wireless stations It will automatically observe the adjacent wireless station s ID if specified MAC address SSID and current status 18 CHAPTER 3 Configuring the Wireless 7760 Event Log List The event log list stores a record of all the events happen within this designated WLAN System Configuration 19 System Configuration Setup Wizard In this section you will learn how to configure the basic functions of your wireless AP The setup Wizard will walk you through
8. gain of less than 2 dBi The RF connector is an R SMA type If you require a different type of antenna for the Access Point 7760 several options are available from the 3Com www 3Com com CONFIGURING THE WIRELESS 7760 If the default AP configuration does not meet your network requirements or if you want to customize the settings for your own network you can use these tools to change the configuration Launch the 3Com Wireless Infrastructure Device Manager Widman utility Directly connect to the device through it s Ethernet port or console port Networks with a DHCP Server If your network has a DHCP server an IP address is automatically assigned to the AP It takes between one and two minutes for the Access Point to determine if there is a DHCP server on the network Use the 3Com Wireless Infrastructure Device Manager Widman included on the 3Com Installation CD to locate the Access Point on the network and view its IP address After you determine the AP s IP address you can enter that IP address into a web browser on a computer on the same subnet to view the Access Points system status or change its configuration Networks without a DHCP Server 13 Networks without a DHCP Server Using the 3Com Installation CD If your network does not have a DHCP server the Access Point uses a factory assigned IP address 169 254 2 2 You can use that IP address to configure the Access Point or you can assign a new IP
9. ready Product model name part number and serial number A list of system hardware and software including revision level m Diagnostic error messages Details about recent configuration changes if applicable To send a product directly to 3Com for repair you must first obtain a return materials authorization number RMA Products sent to 3Com without authorization numbers clearly marked on the outside of the package will be returned to the sender unopened at the sender s expense If your product is registered and under warranty you can obtain an RMA number online at http eSupport 3Com com First time users must apply for a user name and password Telephone numbers are correct at the time of publication Find a current directory of 3Com resources by region at http csoweb4 3Com com contactus END USER LICENSE AGREEMENT Customer shall take all steps necessary to protect Wind River s and its licensors proprietary rights in the Run Time Module and to ensure that each Run Time Module distributed by Customer will be accompanied by a localized copy of an End User License Agreement Such End User License Agreement shall prohibit the End User from i copying the Run Time Module except for archive purposes consistent with the End User s archive procedures ii transferring the Run Time Module to a third party apart from the Target Application iii modifying decompiling disassembling reverse engineering or otherwise
10. the Institute of Electrical and Electronics Engineers Inc All other company and product names may be trademarks of the respective companies with which they are associated ENVIRONMENTAL STATEMENT It is the policy of 3Com Corporation to be environmentally friendly in all operations To uphold our policy we are committed to Establishing environmental performance standards that comply with national legislation and regulations Conserving energy materials and natural resources in all operations Reducing the waste generated by all operations Ensuring that all waste conforms to recognized environmental standards Maximizing the recyclable and reusable content of all products Ensuring that all products can be recycled reused and disposed of safely Ensuring that all products are labeled according to recognized environmental standards Improving our environmental record on a continual basis End of Life Statement 3Com processes allow for the recovery reclamation and safe disposal of all end of life electronic components Regulated Materials Statement 3Com products do not contain any hazardous or ozone depleting material Environmental Statement about the Documentation The documentation for this product is printed on paper that comes from sustainable managed forests it is fully biodegradable and recyclable and is completely chlorine free The varnish is environmentally friendly and the inks are vegetable based with a low heavy metal c
11. using either the active data wires of an Ethernet port or the spare wires to a powered device An end point PSE such as a Power over Ethernet capable Ethernet switch may implement either scheme If a mid span PSE is used then the mid span PSE can only implement power delivery over the spare pairs of the copper cabling and cannot be used to deliver Power over Ethernet over 1000BASE T connections It should be noted that even if a device supports both methods of providing power only one mechanism may be used to deliver power to a powered device The first mechanism is to use the data pairs pins 1 2 amp 3 6 to transmit power which is sometimes referred to as phantom power The second power delivery mechanism is to use the unused from a 10 100BASE T perspective pairs pins 4 5 amp 7 8 to deliver power that is supported within mid span power delivery INSTALLING YOUR 3COM WIRELESS 7760 ACCESS POINT This chapter contains the information you need to install and set up the Wireless 7760AP It covers the following topics Unpacking the device Decide where to place the AP Connecting the Access Point Checking the LED indicators Attaching an External Antenna For first time use Installing Device Manager Unpacking the device Make sure that you have the following items in the box CD PoE Injector Power cord Two external 2 4 GHz and 5 3 GHz dual band antennas Mounting bracket attached to the access point Wall mo
12. D 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 Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com and the 3Com logo are registered trademarks of 3Com Corporation Intel and Pentium are registered trademarks of Intel Corporation Microsoft MS DOS Windows and Windows NT are registered trademarks of Microsoft Corporation Novell and NetWare are registered trademarks of Novell Inc UNIX is a registered trademark in the United States and other countries licensed exclusively through X Open Company Ltd IEEE and 802 are registered trademarks of
13. TKIP or AES for encryption method The Group key update interval is configurable default value is 1800 seconds You can choose personal mode PSK or enterprise mode 802 1X authentication default PSK If you choose PSK you will need to enter a pass phrase of 8 63 ASCII characters or 64 hexadecimal digits If you choose 802 1X you will need access to a RADIUS server port and secret 28 CHAPTER 3 Configuring the Wireless 7760 WPA2 Only Only allows WPA 2 clients to connect to the VAP You can choose TKIP or AES for the encryption method The Group key update interval is configurable default value is 1800 seconds You can choose personal mode PSK or enterprise mode 802 1X authentication default PSK If you choose PSK you will need to enter a pass phrase of 8 63 ASCII characters or 64 hexadecimal digits If you choose 802 1X you will need access to a RADIUS server port and secret WPA2 Mixed Only allows both WPA and WPA2 clients to connect to the VAP You can choose TKIP or AES for encryption method The Group key update interval is configurable default value is 1800 seconds You can choose personal mode PSK or enterprise mode 802 1X authentication The default setting is PSK If you choose PSK you will need to enter a pass phrase of 8 63 ASCII characters or 64 hexadecimal digits If you choose 802 1X you will need access to a RADIUS server port and secret Profile SSID Isolation Stations connecte
14. Vv Scom 3Com Wireless 7760 11 a b g PoE Access Point 3CRWE776075 WL 561 www 3Com com 10015003 Rev AA March 2006 3Com Corporation 350 Campus Drive Marlborough MA 01752 3064 Copyright 2006 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 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 contact 3Com and a copy will be provided to you UNITED STATES GOVERNMENT LEGEN
15. access the access point Enable Disable filter m Change filter rule to allow or deny Add delete MAC addresses in the filter table This function Is only available in AP mode Management 41 Rogue AP Detection Unspecified Access Points may try to access the network through this device Rogue AP detection can prevent this m Change Rogue AP definition Legal AP list The list of allowed access points Detect rogue AP All channels are scanned and Access Points without security or not in legal AP are considered rogue i gt This function is only available in AP mode 42 CHAPTER 3 Configuring the Wireless 7760 Backup Restore This section allows the user back up the Access Points current settings Settings and restore back to the factory default Once you have the Access Point working properly you should back up the information to have it available if something goes wrong Management 43 Firmware Auto The Wireless 7760 can auto upgrade the firmware if there is a newer Update version available If you enable the Auto Upgrade function the Wireless 7760 will automatically check for an updated version of firmware in the assigned FTP server for each time interval assigned Remember to insert the correct FTP server IP address username password and corrected route to the FTP server Firmware Upgrade In this section you can see the current firmware version of your AP You can also manually upgrade your firmware by assigni
16. ack off procedure with a set of pending packets Larger values allow a client to control the channel for longer periods of time allowing it to achieve higher throughput in this access category at the expense of longer access times for all access categories Note In this release clients are blocked from using an access category when they select Enable for Admission Control The Admission Control check boxes control client use of the access categories When you enable admission control for an access category clients associated to the access point must complete the WMM admission control procedure before they can use that access category However access points do not support the admission control procedure in this release so clients cannot use the access category when you enable Admission Control default disable 36 CHAPTER 3 Configuring the Wireless 7760 SNTP The default value table Min Max Contention Contention SC Transmit AC TYPE Window Window Time Opportunity 2x 1 x can 2x 1 x can 0 15 0 65535 uS be 0 10 be 0 10 AC BK 4 10 7 0 AC_BE 4 6 3 0 3008 6016 AC VI 3 4 1 when 11b 1554 3264 AC_VO 3 2 3 1 when 11b Simple Network Time Protocol SNTP allows the administrator to configure the network time settings Service 37 The following settings can be configured SNTP client enable disable Set Time Timezone selection Daylight Saving Primary and Secondary SNTP server port setting C
17. address to the Access Point To verify that the Access Point is using the default IP address assigned at the factory Connect a computer directly to the Access Point using the supplied standard Category 5 UTP Ethernet cable Enter the Access Point s default IP address 169 254 2 2 into the computer s web browser If the Configuration Management System starts the Access Point is using the factory assigned IP address You can configure the Access Point with the following login information m Login name admin m Password password If the Configuration Management System does not start the Access Point is on a different subnet than the computer Install and start the 3Com Wireless Infrastructure Device Manager to discover the Access Point s IP address The 3Com Installation CD contains the following tools and utilities 3Com Wireless Infrastructure Device Manager an administration tool that helps you select 3Com wireless LAN devices and launch their configurations in your Web browser 14 CHAPTER 3 Configuring the Wireless 7760 Launch the 3Com Wireless Infrastructure Device Manager Widman utility Turn on the computer Insert the 3Com Installation CD into the CD ROM drive The CD will Autorun If it does not Autorun you can start the setup menu from the Windows Start menu For example Start gt Run gt d setup exe 3 In the menu click Tools and Utilities 4 Inthe next screen click the software you want to install
18. assword to access the services described in this appendix Register Your Product to Gain Service Benefits To take advantage of warranty and other service benefits you must first register your product at http eSupport 3Com com 3Com eSupport services are based on accounts that are created or that you are authorized to access Solve Problems Online The 3Com Knowledge base helps you to troubleshoot 3Com products This query based interactive tool is located at http knowledgebase 3Com com It contains thousands of technical solutions written by 3Com support engineers 50 APPENDIX B Obtaining SUPPORT FOR YOUR 3COM PRODUCT Purchase Extended Warranty and Professional Services To enhance response times or extend your warranty benefits you can purchase value added services such as 24x7 telephone technical support software upgrades onsite assistance or advanced hardware replacement Experienced engineers are available to manage your installation with minimal disruption to your network Expert assessment and implementation services are offered to fill resource gaps and ensure the success of your networking projects For more information on 3Com Extended Warranty and Professional Services see http www 3Com com Contact your authorized 3Com reseller or 3Com for additional product and support information See the table of access numbers later in this appendix Access Software Downloads You
19. attempting to derive the Source Code of the Run Time Module iv exporting the Run Time Module or underlying technology in contravention of applicable U S and foreign export laws and regulations and v using the Run Time Module other than in connection with operation of the Target Application In addition the End User License Agreement shall i state that the Run Time Module is licensed not sold and that Customer and its licensors retain ownership of all copies of the Run Time Module ii expressly disclaim all implied warranties including without limitation the implied warranties of merchantability fitness for a particular purpose title and non infringement iii exclude liability for any special indirect punitive incidental and consequential damages and iv require that any further distribution of the Run Time Module be subject to the same restrictions set forth herein The End User License Agreement shall also state that with respect to the Run Time Module Wind River and its licensors are third party beneficiaries of the End User License Agreement and that the provisions related to the Run Time Module are made expressly for the benefit of and are enforceable by Wind River and its licensors INDEX 8 D EE 3 Data Beacon eege pee DIN Data R te oieee ane as deceit caacscaesteteantaeens 32 802 11b 9pronioddrotun innana 4 BOD E eege 33 Ree 5 Default IP address 14 A Delivery Traffic Indication Message 32 Device
20. d to different profiles cannot access each other Choose from No Isolation Full access Isolate all Profiles SSIDs from each other check use VLAN 802 1Q standard Multi BSSID Check enable Multiple BSSIDS to allow each profile to send an individual beacon and station separation configuration This can be done is manually or automatically WDS Link Settings gt System Configuration 29 WDS Wireless Distribution System allows access points to communicate with one another wirelessly in a standardized way It can also simplify the network infrastructure by reducing the amount of cabling required Basically the access points will act as a client and an access point at the same time WDS is incompatible with WPA Both features cannot be used at the same time A WDS link is bi directional so the AP must know the MAC address of the other AP and the other AP must have a WDS link back to the AP Dynamically assigned and rotated encryption key are not supported in a WDS connection This means that WPA and other dynamic key assignment technologies may not be used Only Static WEP keys may be used in a WDS connection including any STAs that are associated with a WDS repeating AP Enter the MAC address of the other APs you want to link to and click enable Supports up to 8 point to multipoint WDS links check Enable WDS and then enable on the MAC addresses Example of a WDS topology AP1 lt WDS gt Master AP our AP l
21. ent Mode The QoS Setting should be modified with caution because radio behavior is affected These parameters can be modified when the radio for QoS service is Enabled Ack Policy when the Ack Policy is checked The device will not send ACK frames The default value is disabled Setting Service 35 Description Min Contention Window Max Contention Window Fixed Slot Time Transmit Opportunity Limit Admission Control For each access category enter the minimum contention window value Channel access is prioritized by assigning smaller contention window values to a higher priority traffic class If a channel is busy or a transmission collides a node chooses a random number between O and the current contention window minimum For each access category enter the maximum contention window value The minimum contention window value is doubled each time a collision occurs until the maximum is reached A small contention window value decreases the access delay but increases the probability of a collision For each access category enter the fixed slot time Channel access can be strictly prioritized by assigning smaller contention window values to a higher priority traffic class Traffic in the access category must wait for this fixed number of slots after each packet is received before resuming its random back off Enter the number of microseconds that qualified transmitters can transmit through the normal b
22. g the Access point Close your browser Return to the 3Com Wireless Infrastructure Device Manager and click Refresh Select the device and click Configure to start a new configuration session Make sure the subnet address matches that of the computer Two Access points cannot communicate in ad hoc mode Adjust the positions of the Access points to improve reception To ensure correct operation in ad hoc mode the settings on the two Access points must match exactly Launch the Access point Configuration Management System and make sure that the Wireless LAN Service Area channel selections Data Preamble setting and security setting are the same on both Access points You are running Windows NT After you connect the Access point your computer cannot obtain a valid IP address The Access point configuration settings may not be compatible with the network If they are not and your Windows NT computer is set up to obtain its IP address from a DHCP server the Access point is unable to associate with the network to obtain the IP address To work around this set a static IP address on your computer Then set the Access point configuration to match the network When the Access point is able to associate reset your computer to obtain its IP address from the DHCP server If the Access point should also obtain its IP settings from the DHCP server make sure this is 48 APPENDIX A Troubleshooting Symptom Solution s Sym
23. i BSSID is enabled in the previous screen Suppressed SSID If you want to disable the broadcast of your SSID you should check the Suppressed SSID box It also calls SSID Broadcast disable or Hide SSID VLAN ID If your network uses VLANs you can assign an SSID to a VLAN and client devices using the SSID are grouped in that VLAN 26 CHAPTER 3 Configuring the Wireless 7760 Station Separation Choose either enable or disable to control the selected VAP Virtual Access Point Security There are 4 levels of security available and all have differing properties WEP Wired Equivalent Privacy data encryption provides data security WEP Share Key authentication and WEP data encryption will block all but the most determined hacker System Configuration gt Wireless Network gt SSID Profile Settings K T Save cancel JI Close aj System Configuration 27 From the drop down list choose open system or shared key authentication Select the desired input method HEX or ASCII From the drop down list choose from 40 64 104 128 128 152 key lengths WPA Only Wi Fi Protected Access was constructed to provide improved data encryption which was weak in WEP and to provide user authentication Suppressed SSID D WPA Onl TKIP 1800 Save ll cance close Only allows WPA clients to connect to the VAP You can choose
24. idth demands are low and at regular intervals normal mode allows legacy connectivity and new associations The Super Dynamic mode connection between the Ethernet Adapter and the access point may turn to normal mode connection if another station associates with the access point in normal mode The Super Static mode operates by using two radio channels and does not switch to normal mode Super Static mode must be configured by the user on both the access point and the station Note that in order to enable Super mode the opposite client service needs to provide the same specification System Configuration 25 Channel Frequency Select the channel for your wireless LAN in Channel Frequency block The default setting is SmartSelect it selects the channel which provides the best transmission quality The frequencies available vary depending which wireless mode you select Current Profiles A maximum of 4 profiles can be configured Check the Enable button to activate a profile Click the Edit button to change its configuration SSID Service Set Identifier This is the assigned name for a wireless Wi Fi network Stations must use this unique identifier to communicate with an Access Point The SSID can be any alphanumeric entry up to a maximum of 32 characters BSSID Basic Service Set Identifier This is the assigned MAC address of the station in the access point This unique identifier is in Hex format and can only be edited when Mult
25. lick the radio button to enable If it is disabled the user has to input time manually If it is enabled the device will try to fetch time from configured SNTP servers Includes Year Month Day Hour and Minute These fields are grayed out and un configurable if SNTP is enabled This selection will adjust the time obtained from the SNTP server Note This selection does not affect manual time input for they are considered to be input at the same time The start end date of daylight saving will change automatically based on the time zone selection Note Start and End dates can be input manually to avoid and regional policy changes If SNTP is enabled this device will try to fetch time from the primary server first The timeout for primary NTP server is 5 seconds If the Primary NTP server fails after 5 seconds the Secondary NTP server will be tried for 5 seconds In the event that the secondary server fails the device will wait for 60 seconds before trying the Primary server again This continues until a time is available To avoid using an invalid NTP server address this device will store the fetched configured time After it boots up it will use the stored time first and adjust time if time is fetched 38 CHAPTER 3 Configuring the Wireless 7760 Syslog function In the event of an error the device can send a message to a specified server System Log Click either Enable or Disable to activate or deacti
26. ng the correct route to your new firmware file Once you have chosen the upgrade file click upgrade Rebooting You can reboot the Wireless access point from the browser interface After you click reboot the following window will be displayed 44 CHAPTER 3 Configuring the Wireless 7760 After rebooting the login page will automatically be displayed Connecting through the Com Port 45 Connecting through the Com Port Instead of using an IP address to configure the Access Point a Null modem cable connected to the AP s serial port can be used In your terminal settings ensure that the following configuration is met Bits per Second 9600 Data Bits 8 Parity None Stop bits 1 Flow Control none Once connected enter the user name and password The default values are as follows Username admin Password password Once logged in type for a list of commands Restoring factory settings The Access Point can be reset to the default factory settings either through the web browser see Backup Restore Settings or manually To restore the settings manually insert a pointed object such as the end of a straightened paper clip into the reset hole on the back of the Access Point and hold for five seconds Reset Hole A TROUBLESHOOTING Diagnosin Problems g Symptom Solution s Symptom Solution s If you have difficulty with the Acce
27. ocking bar through the opening in the side of the mounting bracket until the hole on the locking bar is exposed Insert a lock not provided through the hole on the locking bar and then close the lock to secure it in place qj Inserting the locking bar Securing the bar with a lock Checking the LED When the AP is connected to power LEDs indicate activity as Indicators follows LED Color Activity Power Green On Power On Off Power Off PAE 11a Green On WLAN On FG 8 Blinking sending receiving data from wireless LAN c Off Transmitter is off j 11b g Green On WLAN On Blinking sending receiving data from wireless LAN Off Transmitter is off 100 Green On Good Link Blinking sending receiving data from LAN Port Off No link 10 Green On Good Link Blinking sending receiving data from LAN Port Off No link Power up Self test POST Attaching an External Antenna Wall Mounting the Wireless 7760 11 At power up the product will carry out a self test POST POST will run a test on the wireless circuit to check it is functioning correctly When running the POST test 11a and 11b g s LEDs will flash alternatively When firmware is corrupted 11a and 11b g s LEDs will flash alternatively also This AP comes with two antennas They are external removable monopole dual band 2 4 GHz 5 GHz antennas They can be rotated over 360 degrees and are omni directional with a
28. onfiguration 23 predetermined for periods of time Choose Static IP if your network does not have an automatic system for IP address assignment Wireless 7760 11a b g Access Point System Configuration gt IP Settings 2 Access Point System Summary W reless Staton List System Configuration Setup Wired Spatem Progertives ee gt Wiseless Advanced Settings You must click Apply to save your settings before moving to another Service page 24 CHAPTER 3 Configuring the Wireless 7760 Wireless Network The Wireless 7760 supports Multiple SSIDs which allows it to act as multiple APs appearing in a Wireless LAN network You can configure up to 4 SSIDs on the device Cz Wi om reless 7760 11a b g Access Point 7 System Configuration gt Wireless Network Access Point Bystem Status System Voins Station List Event Log List System Configuration Setup Wizard Sue MAC Fit ry d Gite Backup Restore 4 Farmware Auto Update You must click Apply to save your settings before moving to another page Wireless Mode You can select your desired wireless operating mode from the drop down manual The AP supports Super Dynamic and Static modes and boosts throughput up to 108 Mbps The Super Dynamic mode allows automatic switching between normal and turbo modes without modification by the user The feature increases throughput when bandwidth demands are high When bandw
29. ontent Contents Introduction Key Product Features 2 Installing your 3Com Wireless 7760 Access Point Unpacking the device 6 Deciding where to place your AP 7 Wall Mounting the Wireless 7760 9 Configuring the Wireless 7760 Networks with a DHCP Server 12 Networks without a DHCP Server 13 Using the 3Com Installation CD 13 System Status 16 System Configuration 19 Service 33 Syslog function 38 Management 39 Connecting through the Com Port 46 Restoring factory settings 46 Troubleshooting Diagnosing Problems 47 Obtaining Support for your 3Com Product Register Your Product to Gain Service Benefits 50 Solve Problems Online 50 Purchase Extended Warranty and Professional Services 51 Access Software Downloads 51 Contact Us 51 Telephone Technical Support and Repair 52 End User License Agreement Index 2 CHAPTER 1 Introduction 1 INTRODUCTION The 3Com Wireless 7760 11a b g PoE Access Point is a high performance access point that allows you to join isolated wired Ethernet networks into a unified wireless local area network WLAN The Access Point AP supports Wi Fi Protected Access security standards to provide a higher level of security for network data and communications The Wireless 7760AP is also fully compatible with IEEE 802 11a 802 119 and also 802 11b so it connects with all existing 802 11b compliant devices Key Product Features Security Access Point 7760 The product o
30. perates using 11a or 11g modes This access point creates an enterprise class wireless LAN supporting up to 64 simultaneous users 3Com offers one of the most robust suites of standards based security on the market today To protect sensitive data broadcast over the wireless LAN 3Com supports Wireless Equivalent Privacy WEP and Wi Fi Protected Access WPA and WPA2 3Com strengthens this basic security mechanism with additional security features including MAC address access control lists IEEE 802 1x per port user authentication with RADIUS server authentication support Temporal Key Integrity Protocol TKIP Advanced Encryption Standard AES Wireless Protected Access WPA and Extensible Authentication Protocol EAP support EAP MD5 EAP TLS EAP TTLS and PEAP Key Product Features 3 Performance And Reliability Manageability Wireless Network Standards 3Com wireless access point performance features ensure reliable and seamless connections for users wherever they roam Automatic channel selection automatically finds the least loaded channel for interference free communication Auto network connect and dynamic rate shifting keep users connected through a wide variety of conditions by changing to the optimum connection speed as they move through the network 3Com offers a wide range of standards based management support from SNMP to 3Com Network Supervisor and HP OpenView for seamless integration with your wired network
31. ptom Solution s Symptom Solution s configured properly on the IP Network page and applied just before ending the session Disconnecting the Access point To disconnect the Access point CAUTION Disconnecting the Access point ends the network association To avoid possible data loss exit all networking applications on connected devices before you disconnect the Access point Unplug the Access point Ethernet cable from the hub or other device Unplug the Access point power cord Uninstalling Software and Documentation If you want to uninstall the 3Com 11a b g Wireless Workgroup Access point software and documentation you can either use the standard operating system procedure for removing programs or use the following shortcut From the Windows Start menu select Start gt Programs gt 3Com Wireless gt Uninstall 3Com Wireless Infrastructure Device Manager When prompted to confirm click OK Upgrading Access point Firmware Firmware is the software that is installed on the Access point at the factory Some problems can be solved by installing a new version of the firmware For details on how to download a firmware update from the 3Com customer support Web site and install it on your Access point see Upgrading the System on page 43 OBTAINING SUPPORT FOR YOUR 3COM PRODUCT 3Com offers product registration case management and repair services through eSupport 3Com com You must have a user name and p
32. ransferring large files like computer aided design files preprint publishing documents or graphics files such as MRI scans for medical applications that demand additional bandwidth m Supporting a dense user base confined to a small coverage area Because 802 11a has a greater number of non overlapping channels you can pack more wireless devices in a tighter space 802 11b g 802 11b and 802 11g both operate in the 2 4GHz band 802 11b can support data rate up to 11Mbps 802 11g can support data rate up to 54Mbps They both support the widest coverage up to 100m 328ft It is however subject to a greater risk of radio interference because it operates in the more popular 2 4GHz band Consider 802 11g when you need wider coverage and vendor compatibility and you are m Maintaining support for existing 802 11b users and the existing wireless investment while providing for expansion into 802 11g m Implementing a complete wireless LAN solution including Ethernet Adapters gateways access points and clients Wi Fi certification guarantees compatibility among vendors m Providing access to hot spots in public spaces such as coffee shops or university cafeterias Key Product Features 5 IEEE 802 3af The IEEE 802 3af 2003 Power over Ethernet standard defines terminology to describe a port that acts as a power source PSE to a powered device PD The IEEE 802 3af standard states that power may be delivered by an end point PSE
33. se the CSMA CA mechanism or the CSMA CD mechanism 802 11d support 802 1d allows the device to communicate in areas where the 802 11 standard is not allowed It adds features and restrictions to ensure compliance Antenna Type If you have added additional external antennas check the External High Gain Radio Antenna radio button The original packing includes 2 external antennas If the user purchases other type of antennas then they need to check the high gain antenna box Service 33 Service Management VLAN IAPP If you reconfigure the Management VLAN ID you may lose connectivity to the access point Verify that the switch and DHCP server can support the reconfigured VLAN ID and then re connect to the new IP address Inter Access Point Protocol IAPP 802 11F IAPP Support Choose either Enable or Disable IAPP allows multiple access points to communicate and pass location information about their associated stations If you enable 802 11F support you should manually add BSSID IP mapping Enter the BSSID and IP addresses of the AP Click Add Only stations roaming from one of the listed APs to this AP are allowed to re associate with this AP Others will be requested to go through the full association process Qos This section provides the administrator with the Quality of Service QoS data 34 CHAPTER 3 Configuring the Wireless 7760 The QoS setting is only available in AP Mode and Wireless Cli
34. ss point try the solutions in the following table After you change the IP address after you restore a backup configuration or after you reset the Access point to factory defaults the Configuration Management System stops responding and you cannot continue configuring the Access point If you change the IP address and click Apply you cannot continue to configure the device using the old IP address Similarly after you restore a backup configuration or reset the Access point to factory defaults the IP address setting may be changed To recover from this situation and continue configuring the Access point Close your browser Return to the 3Com Wireless Infrastructure Device Manager and click Refresh Select the device and click Configure to start a new configuration session and set its IP address The Wireless Network Tree does not appear in the 3Com Wireless Infrastructure Device Manager window Verify that you are using the correct network adapter In the device manager window click Choose NIC Select the network adapter for the network you want to scan and click OK Symptom Solution s Symptom Solution s Symptom Solution s Diagnosing Problems 41 The Access point has a yellow exclamation point next to it in the Wireless Infrastructure Device Manager m The Access point is on a different subnet than the computer attempting to configure it To recover from this situation and continue configurin
35. t WDS gt AP3 lt WDS gt AP4 30 CHAPTER 3 Configuring the Wireless 7760 WDS Security Settings This item is only available in Access Point Mode and Wireless Bridge Mode Choose the required security level from None WEP WPA PSK TKIP WPA PSK AES WPA2 PSK TKIP or WPA2 PSK AES If using WEP security enter the WEP key if using WPA enter the pass phrase System Configuration 31 Wireless Advanced To configure the advanced wireless setting click Wireless Settings Advanced Settings and the tool bar and Wireless Advanced Settings menu will appear Data Rate Choose between the following data rates 12 18 24 36 48 72 96 108 and best Default is Best Transmit Power Choose between the following power levels Full Half 3dB Quarter 6dB Eighth 9dB or Minimum Default is Full Beacon Interval The interval time between 20ms and 1000ms for each beacon transmission The default is 100ms Data Beacon Rate DTIM The Delivery Traffic Indication Message Specify the data beacon rate between 1 and 255 Default is 1 32 CHAPTER 3 Configuring the Wireless 7760 Fragment Length The maximum packet size is used for fragmentation Packets larger than the size programmed in this field will be fragmented The Fragment Threshold value must be larger than the RTS Threshold value The default is 2346 RTS Threshold Request to send threshold The packet size that is used to determine if it should u
36. the setting up of the Office Connect Access Point Screen 1 allows you to setup the following information SSID Service Set Identifier This is the name of wireless network Input 1 32 characters Wireless Mode Choose the required network mode from the drop down menu Channel Frequency Choose a frequency from the drop down menu or select SmartSelect recommended to let the device select a channel m Click Next to continue the configuration or click clear to start again 20 CHAPTER 3 Configuring the Wireless 7760 Screen 2 allows you to setup the following information P Network Setting Check the radio button for either obtaining an IP address via DHCP or specifying an IP Address manually P Address Enter the IP address that you want to assign IP Subnet Mask Enter your networks subnet address Default Gateway If used enter the gateway address that the device should go through System Properties System Configuration 21 Screen 3 allows you choose the security settings Choose the following settings from the drop down menu o Gg Wireless 7760 11a b g Access Point 2 Setup Wizard gt Wireless Security Settings Access Point System Summary g System Configuration Setup Wierd Sptiom Properties Firmware Auto Update Firmware Upgrade No security WEP WPA Only WPA2 Only m WPA2 Mixed Click Close to close without saving click
37. ties ccesseeeeeeeeeeeeenees 21 System Summary 16 T terminal settings 48 Mao Eee EAEE EEEE EEEE 37 Transmit Power 32 U De at Uu UE 15 48 V VEAN ID Ee 26 VLAN Management 34 W Wall Mounting 8 WDS Securtty eee eeeeceeeeeneeeeeeeeeeeeeeeeneeees 37 WER See Wired Equivalent Privacy Wi Fi Protected Access 27 28 Wi Fi Protected Access 2 28 Wired Equivalent Privacy s s s 26 Wireless Cent 22 Wireless Distribution System 29 See Wireless Distribution System Wireless Network Standards 3 Wireless Range 4 7 WA See Wi Fi Protected Access WPAZ See Wi Fi Protected Access 2 WPA Mixed See Wi Fi Protected Access
38. unting hardware Locking bar used for securing a wall or ceiling mounted installation Two sheet metal screws Two thread screws Two wall anchors Four adhesive rubber feet used for a flat surface installation Deciding where to place your AP 7 The Figure below shows the front view of the AP including the LEDs and connecting ports Antenna Connectors LEDs Reset Button Power Port Mounting Bracket Serial Port Deciding where to place your AP Place the AP in a dry clean location near the hub switch computer or printer that will be connected to the AP The location must have a power source and be within the following distance of a Wi Fi compliant wireless LAN access point or wireless access point The key to maximizing the wireless range is to follow these basic guidelines m Keep your product away at least 3 6 feet or 1 2 meters from electrical devices or appliances that generate RF noise The location should be away from transformers heavy duty motors fluorescent lights microwave ovens refrigerators Keep the number of walls and ceilings between the AP and other network devices to a minimum each wall or ceiling can reduce your AP s range from 3 90 feet 1 30 meters Position your devices so that the number of walls or ceilings is minimized Be aware of the direct line between network devices A wall that is 1 5 feet thick 0 5 meters at a 45 degree angle appears to be almost 3 feet
39. vate the system log function Syslog Server Enter the IP address of the server that will receive the error information The default IP address is 0 0 0 0 Syslog Port Enter the port number that your server can be accessed by The default port number is 514 Syslog Level Management 39 Choose from the following levels in order of severity of detail to be recorded The default setting is Error Emergency System is unusable Alert Action must be taken immediately Critical Critical condition Error Error condition Warning Warning condition Notice Normal but significant condition Informational Informational messages Management Administration SNMP This section describes how to use the management and information features of your Wireless 7760 Access Point In this section you can change the user administrator name and password The default Administrator name is admin case sensitive and password is password Click Apply to save changes The SNMP administrative functions are changed through this section The following functions can be changed 40 CHAPTER 3 Configuring the Wireless 7760 D MAC Filtering Enable Disable SNMP Contact info Community names for read only and read write Trap destination IP address Community name This function is not available in Wireless Bridge mode MAC filtering allows the administrator to filter MAC addresses of network cards that can
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