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14

M

OUNTING

THE

B

RIDGE

TO

A

M

AST

The bridge can be placed in any suitable outdoor location (see “Installation
Guidelines” on page 11). Refer to the adjustable mount instruction sheet that
comes with the bridge mounting hardware, and the illustrations below:

Make sure that all bridges
are properly oriented for
polarization as described
in “Polarization” on
page 12. Use the
polarization indicators on
the antenna panel to
guide orientation. VERT
POL indicates vertical
polarization and HORIZ
POL indicates horizontal
polarization.

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Содержание 3CRWEASY96A - 11 Mbps Wireless LAN Outdoor Bridge...

Страница 1: ...m com http support 3com com registration frontpg pl User Guide Wireless LAN Outdoor Bridge Solution 3CRWEASY96A Complete Building to Building Outdoor Wireless LAN Kit Published February 2003 Document Version 1 2 0 ...

Страница 2: ... 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...

Страница 3: ... Use 12 Safety Information 13 Mounting the Bridge to a Mast 14 Connecting the Bridge to the LAN 15 Using the Power Supply 15 Using a Power Over Ethernet LAN Port 15 Installing Software Utilities 16 Establishing Wireless Association 17 3 Configuring the Building to Building Bridge Using the 3Com Wireless Device Manager 18 Launching a Wireless Device Configuration 18 Using the Pre IP Configuration W...

Страница 4: ...dge 33 Restoring a Bridge to Factory Defaults 34 Upgrading the System 34 Changing the Administration Password 35 Backing up a Configuration 35 Restoring a Configuration 36 Viewing the Client List 36 Resetting Statistics Listings 37 Clearing the Client List 37 Viewing Connection Status 37 Viewing the System Summary 37 Interoperating with Third Party Equipment 37 4 Troubleshooting Diagnosing Problem...

Страница 5: ...Regulatory Compliance Information Index ...

Страница 6: ......

Страница 7: ...ution delivers three to four times the bandwidth of T1 links with significantly lower operational costs The wireless bridge lets you connect cross campus buildings or portable or temporary classrooms at distances up to 16 kilometers 10 miles where local regulations allow The building to building bridge interoperates seamlessly with other Wi Fi certified access points in large multi vendor environm...

Страница 8: ... equipped with an omnidirectional antenna provides wireless association among the wired LANs in the other buildings where 3Com outdoor bridges are installed If a 3Com 11 Mbps Wireless LAN Access Point 8000 is used with an 8dBi omnidirectional antenna this topology can connect wired LANs over distances up to 10 kilometers 6 miles If an access point from another Wi Fi compliant manufacturer is used ...

Страница 9: ... two outdoor bridges can associate without an access point allowing the LANs to which they are connected to communicate Access Point Infrastructure mode is the basis for point to multipoint topology Operating in access point mode multiple 3Com outdoor bridges act as clients to an Access Point 8000 or a Wi Fi compliant access point from another manufacturer ...

Страница 10: ...ach other building Mounting hardware supplied with each bridge Properly grounded outdoor mast or wall mount Lightning arrestor properly grounded at each building in the topology Outdoor rated category 5 Ethernet cable 3Com part number 3CWE487 recommended POWER REQUIREMENTS The bridge complies with the IEEE 802 3af power over Ethernet standard It receives power over outdoor rated Ethernet cable 3Co...

Страница 11: ... designed for outdoor use in most climates Optimal performance can be maintained at outdoor temperature ranges from 20 C to 50 C 4 F to 122 F It is extremely important to avoid mounting the bridge in any area where it could be vulnerable to extreme or hazardous conditions of any kind Nor should the unit be mounted flush with the roof of a building PROPER GROUNDING To ensure the physical safety of ...

Страница 12: ... radio signal propagation In general any two antennas that are to communicate with each other must be set for the same horizontal or vertical polarization If polarization on both antennas does not match a situation called cross polarization the link will either work poorly or not at all Follow these polarization guidelines Vertical polarization is preferred for point to multipoint configuration Fo...

Страница 13: ...e country of use All references to power supply in this document refer to equipment meeting these requirements WARNING It is the responsibility of the installer to ensure that the Power over Ethernet POE power supply is properly connected Connection to any other device such as a standard Ethernet card or another POE supply may result in permanent damage to equipment electric shock or fire Refer to...

Страница 14: ... instruction sheet that comes with the bridge mounting hardware and the illustrations below Make sure that all bridges are properly oriented for polarization as described in Polarization on page 12 Use the polarization indicators on the antenna panel to guide orientation VERT POL indicates vertical polarization and HORIZ POL indicates horizontal polarization ...

Страница 15: ...cable coming from the bridge to the port labeled To Access Point on the power supply Connect another Ethernet cable from the port labeled To Hub Switch on the power supply to an Ethernet LAN port as shown USING A POWER OVER ETHERNET LAN PORT If your LAN equipment complies with the IEEE 802 3af power over Ethernet standard you can connect the bridge directly to a LAN port For example the CAUTION To...

Страница 16: ...l and documentation from the CD 1 Power up the computer and insert the 3Com CD in the CD ROM drive 2 The setup menu should appear when the CD autostarts If no menu appears you can run the startup program from the Windows Start menu Start Run d setup exe where d is the CD ROM drive 3 From the menu select Install the Tools and Documentation This option installls the 3Com Wireless Infrastructure Devi...

Страница 17: ...g to Building Bridge on page 18 for details on how to launch the configuration and make changes For a point to point association between two bridges see Setting up an Ad Hoc Network on page 28 and Optimizing an Ad Hoc Installation on page 29 For a point to multipoint association between an access point and one or more bridges see Setting up an Access Point Infrastructure Network on page 30 ...

Страница 18: ...s network or connected directly to the computer and connected to power If more than one device using the factory default name is connected make a note of the MAC address of the device you want to select so that you can identify it in the device manager LAUNCHING A WIRELESS DEVICE CONFIGURATION If you do not have a DHCP server on your network it can take up to one minute for a device to become disc...

Страница 19: ... see Using the Pre IP Configuration Wizard on page 20 The next window prompts for an administrative password to allow the new IP address to be set When the units are shipped from the factory there is no administration password and you should leave the password field blank If an administration password has been set for the device enter the password and click Next The 3Com Web Configuration Manageme...

Страница 20: ...ssword and click Next The Configuration Management System main page appears in your Web browser USING THE RSSI MONITOR The device manager can display a dynamic graphical representation of a device s received signal strength indication RSSI By monitoring the RSSI while making antenna adjustments you can ensure optimal device placement and orientation To monitor signal strength the devices must be s...

Страница 21: ...ages in the configuration have two buttons Save and Clear After making changes on a page you must click Save to store the modifications before moving to a new page If you make a mistake click Clear before saving to restore the original page settings To reduce the possibility of losing wireless association with an access point while you are configuring security settings are stored when you click Sa...

Страница 22: ...al drive If you want to have access to help when you click the in the configuration pages you must install the help from the 3Com CD By default help is installed on the local drive when you install the administration tool If you install the help in a different location on the local drive or on a web server you must set the Help File Path to the correct location C Program Files 3Com 3Com Wireless I...

Страница 23: ...ol filtering allows you to control the types of protocols that the bridge is authorized to transmit and receive The default setting allows the following protocols to be transmitted and received IPX NetBEUI UDP IP TCP IP To set up a list of authorized protocols 1 Under System Configuration click Protocol Filtering 2 In the Protocol Filtering page click the Allow radio buttons next to the protocols ...

Страница 24: ... Reset to clear all check boxes before clicking Delete SETTING WIRELESS NETWORK PROPERTIES Under System Configuration click Wireless Network Properties The Wireless Network Properties page appears where you can configure the items listed below and get access to advanced performance settings When you are finished click Save Network Mode Click Access Point Infrastructure to associate with an access ...

Страница 25: ...el selection as follows Automatically select the best channel When this option is enabled the bridge scans the primary channels If the bridge is establishing a new ad hoc network it chooses the channel with the least number of packets If the bridge is joining an existing ad hoc network it selects the channel in use Specify the channel to use To establish the channel for an ad hoc network select th...

Страница 26: ...being used click Long Wi Fi Interoperable Flow Control When there is a great deal of traffic on the wireless LAN flow control can prevent bridge input buffers from overflowing thereby increasing WLAN reliability The bridge supports IEEE 802 3x asymmetric outgoing flow control allowing it to pause the transmission of data frames from a switch or router that is operating in full duplex mode and supp...

Страница 27: ...han the number of clients that you expect to use the wireless LAN The client list timeout setting should be as short as possible but no less than five minutes Data Rates These settings configure the data rates used for wireless transmissions By default the bridge selects the best data rate for the current connection You may not alter the settings for the 1Mbps and 2Mbps rates because these rates m...

Страница 28: ...c Peer to Peer b Specify the Wireless LAN Service Area c Specify the Channel Selection To avoid the possibility of interference from other nearby wireless devices specify the channel to use d Click Save to save the wireless network settings and activate the security settings e Click the link to go to advanced wireless network configuration 6 In the Advanced Wireless Network page set options as des...

Страница 29: ...abled To use the device manager RSSI Monitor 1 Install the Wireless Infrastructure Device Manager version 1 2 0 9 or later from the 3Com installation CD 2 Launch the device manager Start Programs 3Com Wireless Wireless Infrastructure Device Manager 3 In the device manager window launch the first bridge configuration and configure for ad hoc mode Enable RSSI broadcasting as follows a In the main me...

Страница 30: ...n SETTING UP AN ACCESS POINT INFRASTRUCTURE NETWORK Operating in Access Point Infrastructure mode one or more bridges can establish a point to multipoint association with an access point allowing the LANs to which they are connected to communicate 1 Use an omnidirectional antenna atop the central building Attach the antenna to an access point inside the building Install 3Com outdoor bridges or ind...

Страница 31: ...roperties on page 26 To ensure network reliability follow these guidelines for configuring the access point Make sure that the access point can support more than the number of clients that you expect to use the wireless LAN The client list timeout setting should be as short as possible but no less than five minutes 6 When you are finished click Save 7 End the browser session 8 Repeat the procedure...

Страница 32: ... third party manufacturers that are Wi Fi certified This type of security requires you to set up encryption in one of the following ways String For use only with other 3Com 11 Mbps wireless LAN devices an encryption string is a case sensitive string of characters between 6 and 30 characters long To enter the string click Enter a string to generate shared keys Then type any combination of letters a...

Страница 33: ...ss point Each network session creates a unique one time encryption code If you choose this type of security you must also set up a login as described in Setting up the Wireless Network Login on page 33 SETTING UP THE WIRELESS NETWORK LOGIN If you configure a bridge for 128 bit Dynamic Security Link you must also set up a login user name and password which must match a listing in the access point u...

Страница 34: ...t to continue configuring the bridge do the following 1 Close your browser 2 Return to the 3Com Wireless Infrastructure Device Manager and click Refresh 3 Select the device and click Configure to start a new configuration session UPGRADING THE SYSTEM You can download firmware and configuration management system upgrades from the 3Com Web site and install those upgrades on the bridge The upgrade pr...

Страница 35: ...ed access After you set the password you must enter it each time you launch the configuration for the device A user name is not required Under Tools click Change Administration Password The Change Administration Password page appears where you can change the administration password for the device Enter the current password and new password in the spaces provided and click Save BACKING UP A CONFIGU...

Страница 36: ...a new configuration session VIEWING THE CLIENT LIST Under System Status click Ethernet Client List The Ethernet Client List page appears where you can view the following information Ethernet Clients Lists the client MAC addresses The bridge supports up to 1024 specific clients When the list reaches its limit new clients replace inactive clients status Not Associated Transmitted Packets The number ...

Страница 37: ...gnal strength values in the RSSI field range from 0 no signal to 100 excellent signal quality A signal strength of 30 is good a value of 40 or greater is very good Click Refresh to update the information VIEWING THE SYSTEM SUMMARY Under System Status click System Summary to see information about the bridge You can go to the configuration pages of items that can be configured by clicking their name...

Страница 38: ... the bridge match those on the access point If the access point is from another manufacturer try turning the Network Traffic Accelerator off and setting the Data Preamble to long Using 128 bit Dynamic Security Link encryption the bridge cannot associate with access points that are set to Require Windows user authentication which requires clients to enter a user name and password every time they as...

Страница 39: ...r you change the IP address after you restore a backup configuration or after you reset the bridge to factory defaults the Configuration Management System stops responding and you cannot continue configuring the bridge If you change the IP address and click Save you cannot continue to configure the device using the old IP address Similarly after you restore a backup configuration or reset the brid...

Страница 40: ...dard operating system procedure for removing programs or use the following shortcut procedure 1 From the Windows Start menu select Start Programs 3Com Wireless Wireless Building to Building Bridge Uninstall 2 When prompted to confirm click OK UPGRADING BRIDGE FIRMWARE Firmware is the software that is installed on the bridge at the factory Some problems can be solved by installing a new version of ...

Страница 41: ...nd software library and 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 com this service gives all 3Com customers and partners complimentary rou...

Страница 42: ...ROM 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 Product model name part number ...

Страница 43: ... or 00800 0638 3266 Singapore 800 6161 463 S Korea 00798 611 2230 or 02 3455 6455 Taiwan R O C 00801 611 261 Thailand 001 800 611 2000 Or send a description of the problem by email to apr_technical_support 3com com Europe Middle East and Africa From anywhere in these regions http emea 3com com support supportnumbers html Latin America Brazil http www 3com com support en_US repair lat html Mexico h...

Страница 44: ...rt en_US repair lat html Caribbean 525 201 0004 Chile 562 240 6200 Colombia 525 201 0004 Ecuador http www 3com com support en_US repair lat html Mexico http www 3com com support en_US repair lat html Paraguay 525 201 0004 Peru 511 241 1691 Uruguay 525 201 0004 Venezuela 525 201 0004 From the following countries you may call the toll free numbers select option 2 and then option 2 Austria 0800 29746...

Страница 45: ... Poland 00800 3111206 Portugal 0800 831416 South Africa 0800 995014 Spain 900 983125 Sweden 020 795482 Switzerland 0800 55 3072 U K 0800 966197 U S A and Canada 1 800 876 3266 Country Contact Information ...

Страница 46: ...nd 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 on the user is encouraged to try to correct the ...

Страница 47: ...ments of Directive 73 23 EC and the essential requirements of articles 3 1 b 3 2 and 3 3 of Directive 1999 5 EC Such marking is indicative that this equipment meets or exceeds the following technical standards EN 300 328 2 Electromagnetic compatibility and Radio spectrum Matters ERM Wideband Transmission systems data transmission equipment operating in the 2 4 GHz ISM band and using spread spectru...

Страница 48: ...t identification BSSID 24 bridge changing properties 21 installation 10 maintaining configurations 35 password 35 resetting 22 33 39 restoring factory defaults 34 user name 35 broadcast ESSID 25 broadcast RSSI 27 C changing passwords administration 35 channel and power restrictions 12 channel selection 25 choosing a NIC 19 clearing the client list 37 client list 37 configuration 18 backing up 35 m...

Страница 49: ... login user name and password 33 M MAC address use in locating devices 18 19 N network access point 9 30 ad hoc 9 28 infrastructure 24 mode 24 privacy mode 25 traffic accelerator 26 network supplier support 42 NIC choosing 19 No Security 32 O online technical services 41 open system 32 operating mode access point 9 30 ad hoc 9 28 P password changing 35 performance properties advanced 26 point to m...

Страница 50: ...o channel 25 shared keys 32 signal strength broadcasting 27 software utilities 16 installing 16 solving problems 38 system summary viewing 37 T technical support 3Com Knowledgebase Web Services 41 network suppliers 42 product repair 43 temperature 11 thermal performance 11 third party interoperability 37 traffic accelerator 26 troubleshooting 38 bridge firmware 34 U upgrading bridge firmware 34 us...

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