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3Com Corporation 

 

       Page 16 

 

Installing the 3CRWEASYG73/3CRWE920G73 Antenna

 

 

The installation of indoor wireless links requires technical expertise. At the very 
least, you should be able to: 

  Install and configure the network components, such as the 3Com wireless bridge 

hardware. 

  Understand, or have a working knowledge of, installation procedures for network 

operating systems using Microsoft Windows. 

  Mount the indoor antenna. Antenna installation must be provided by professional 

installers. 
 

 

WARNING! 

The indoor antennas to be used with these products are intended for mounting on 
an antenna tower, on a roof, or on the side of a building. Installation is not to be 
attempted by someone not trained or experienced in this type of work. The 
antenna must be installed by a suitably trained professional installation technician 
or by a qualified antenna installation service. The site prerequisites must be 
checked by a person familiar with the National Electrical Code and with other 
regulations governing this type of installation. 

Local radio regulations or legislation may impose restrictions on the use of specific 
combinations of: 

  Low-loss antenna cables and indoor antennas 

 Radio channels selected at the radios that are connected to specific indoor 

antennas 

 

 

Note: 

A basic rule for selecting a combination of cables and antennas is that no 

combination is allowed unless explicitly approved in the 3Com wireless bridge 
User Guide for your product. Therefore, always use 3Com recommended 
antennas in page 16 of User Guide to select the correct type of antenna 
equipment and to inform your antenna installer and LAN administrator about the 
impact of regulatory constraints on their job or activities. 

 

 

CAUTION: 

At all times, it is the customer’s responsibility to ensure that an 

indoor antenna installation complies with local radio regulations.

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The customer must verify that: 

The antenna installer is aware of these regulations. 

      The correct cable type and surge arrestor have been used, according to the 
instructions described in the user guide. 3Com Corporation and its resellers or 
distributors are not liable for any damage or violation of government regulations 
that may arise from failing to comply with these guidelines. 

 

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In case you are not certain about the regulations that apply in your country, consult your local 3Com 

representatives.

 

 

   

 

Summary of Contents for 3CRWEASYG73 - 11g Wireless LAN Outdoor

Page 1: ...3Com 802 11g 54Mbps Wireless LAN Building to Building Bridge User s Guide Version 2 0 Outdoor 3CRWEASYG73 Indoor 3CRWE920G73 Part No DUA ASYG73 AAA02 Published January 2005...

Page 2: ......

Page 3: ...tation 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 i...

Page 4: ...dge 14 Installing the 3CRWEASYG73 3CRWE920G73 Antenna 16 Antenna Specification 17 Connect to the Power Source and the Local Network 18 LED Indicators 19 Software Installation 20 Find your New Wireless...

Page 5: ...8 System Status 69 Statics 69 STP 71 STP Statics 71 STP Port 72 4 TROUBLESHOOTING 73 Reset to Factory Default procedure 73 Setting IP Address Using 3Com Wireless Infrastructure Device Manager 73 Hardw...

Page 6: ...working LAN concepts and wireless Internet access infrastructures In addition you should be familiar with the following Hardware installers should have a working knowledge of basic electronics and mec...

Page 7: ...ands The word command means that you must enter the command exactly as shown and then press Return or Enter Commands appear in bold Example To display IP information enter the following command get ip...

Page 8: ...n rate up to 54Mbps which is faster than any 802 11b Bridge Wireless Access Security The 3Com Corporation 802 11g Wireless Bridge provides high level security with full 128 bit RC4 data encryption or...

Page 9: ...s in different buildings with no wired connections You will need a 3Com 802 11g 54Mbps Building to Building Bridge on both sides of the connection In this case the Wireless Bridge acts as a network br...

Page 10: ...wing information Package content Hardware installation Software installation Scope of Delivery Please ensure that the package is complete before beginning with the installation The package should incl...

Page 11: ...apart on the wall Use the vertical line on the template to ensure that the placement of the marks is plumb to the wall 2 Drill holes at the marks Use a 5 mm 3 16 inch drill bit if using the provided...

Page 12: ...ber 6 panhead screws 2 Align the T rail grips with the ceiling T rail and adjust them so that they grip the T rails securely 3 Tighten the screws on each T rail grip After installation there may be so...

Page 13: ...ting hardware provided with the antenna Outdoor placement is especially important if the building is of metal construction or has metal siding If necessary you can mount an antenna inside a building h...

Page 14: ...sary such an arrangement helps to ensure a strong signal Ensure that access is available for routing the antenna cable from the antenna to the bridge Make certain that the antenna and antenna mast are...

Page 15: ...ctive range To ensure the physical safety of anyone near the antenna and to prevent damage to the bridge follow the building codes for antenna installations in your area This is another good reason to...

Page 16: ...helps to ensure a strong signal As mentioned earlier this is not always possible in long distance configurations Any two bridge units that are to communicate with each other must be set for the same p...

Page 17: ...ose restrictions on the use of specific combinations of Low loss antenna cables and indoor antennas Radio channels selected at the radios that are connected to specific indoor antennas Note A basic ru...

Page 18: ...497 4dBi bi directional Antenna Cables NOTE Because of power level restrictions use of the 3CWE495 13dBi and 3CWE496 18dBi antennas is not allowed in some countries The highest allowable power level i...

Page 19: ...urce and the Local Network Connect a twisted pair CAT5 Ethernet cable from the To Hub Switch port of the PoE Adapter to a free port on the hub or switch within the local network 3CRWE920G73 Indoor Wir...

Page 20: ...d light up On the front of the Wireless Bridge you will find three LEDs POWER WIRELESS ETHERNET 1 POWER LED Off Power supply connection not available or broken On Power supply connection OK 2 WIRELESS...

Page 21: ...emon Server Tool a firmware upgrade tool that can act in four different capacities As a TFTP Server necessary for firmware upgrades and backup and restore functions Use this option if you do not have...

Page 22: ...ireless Bridge in the list box and then click the Configure button If 3Com Wireless Infrastructure Device Manager WIDMAN finds that your PC cannot connect to the Wireless Bridge by IP it would pop up...

Page 23: ...ll setup the username password for administrator access And you will select Country antenna and cable Settings on this page as well NOTE 1 Default USERNAME and PASSWORD are both admin 2 Antenna and Ca...

Page 24: ...ected to power Wired to the network associating with the wireless network or in some cases with the bridge connected directly to the computer Before you connect to the device using the Diagnostic Util...

Page 25: ...3Com Corporation Page 24 Figure 2 Diagnostic Utility Main Page On the SysInfo page you will see the system uptime bridge MAC address and the Firmware version number...

Page 26: ...3Com Corporation Page 25 To check the system performance information click the Performance tab Figure 3 System Performances The Performance tab displays the CPU and memory usage information...

Page 27: ...WDS link information click the WDS Info tab Figure 4 WDS Information On the WDS Info tab select a WDS link from the drop down menu to see statistics for that link If there is no WDS link for the wirel...

Page 28: ...tion Page 27 To check the interface statistics click the Interface Info tab Figure 5 Interfaces Information The Interface Info page displays the Ethernet and Wireless interface information of the wire...

Page 29: ...g is required to do scanning This can be input in the pop up dialog Figure 6 Site Survey The Site Survey page displays all other wireless sites Contents of CD The CD ROM which is enclosed in the packa...

Page 30: ...le 2 Open a Web browser on the computer 3 In the Address or Location field enter the IP address of a Bridge on the network For example if the IP address is 192 168 1 1 type http 192 168 1 1 to access...

Page 31: ...ch your browser and enter the IP address of your Wireless Bridge in the address field The network identification dialogue appears Figure 8 Login Page Enter the administrator name and password and then...

Page 32: ...or AES PSK Wireless Setup You can now enter the SSID and choose the radio channel Figure 10 Wireless Settings Wireless Network name SSID specify the unique name for your wireless bridge Radio Channel...

Page 33: ...onnection You can select WEP WPA PSK TKIP WPA PSK AES or No security for your device If no security is needed simply choose the None radio button Figure 11 Security Settings Back return to the previou...

Page 34: ...F and a f pairs e g 00 11 22 33 44 55 66 77 88 99 AA BB CC for the 128 bits WEP encryption To continue the setup wizard click the Next button and the Confirm Settings page will appear WPA PSK TKIP If...

Page 35: ...ettings Select the bridges whose channel is the same as your bridge and then click Next button Back return to the previous wizard page Next continue the bridge setup process Cancel cancel the bridge s...

Page 36: ...mpleted click the Finish button to complete the Setup Wizard Figure 16 Confirm Settings This Page shows the settings summary of Setup Wizard configuration Back return to the previous wizard page Finis...

Page 37: ...racters Location Password specify new password value used for user authentication in the system 1 60 characters Contact specify the name of the person company responsible for the wireless bridge 1 60...

Page 38: ...s bridge LAN Subnet Mask Show subnet mask of the IP address LAN Default Gateway Show the gateway IP address of this bridge DHCP Server Show if the DHCP server is enabled DHCP Range Show the IP address...

Page 39: ...ridges devices If you wish to operate more than one bridge in overlapping coverage areas we recommend a distance of at least four channels between the chosen channels For example for three bridges in...

Page 40: ...threshold are fragmented i e split into smaller units suitable for the circuit size Packets smaller than the specified fragmentation threshold value are not fragmented 256 2346 default 2346 2346 mean...

Page 41: ...the changes you have made and loads them to the bridge so they are active If you do not use the Save Configuration operation and direct reboot device All the changes you have done will be lost and no...

Page 42: ...s subnet mask digit and dots Default Gateway specify the IP address of the bridge s gateway digit and dots If you change the IP address manually make sure that the chosen IP address is free and belon...

Page 43: ...tton On to enable the DHCP server IP Pool Start Address the first IP address in the range of addresses that you want to assign IP Pool Start Address the last IP address in the range of addresses that...

Page 44: ...ry setting and cannot be changed Wireless network name SSID is a unique name for your wireless network 1 32 characters The default SSID is 3Com you should change this to a personal wireless network na...

Page 45: ...ireless Setup Advanced Basic Rate Set Mbps select the checkbox to set the Basic data rates at which the station may transmit and receive data Beacon Period milliseconds this setting specifies the amou...

Page 46: ...ets smaller than the specified fragmentation threshold value are not fragmented 256 2346 default 2346 2346 means that fragmentation is disabled Cancel restore all previous values Apply save changed co...

Page 47: ...ed key as 26 Hex characters or 13 ASCII bytes Key Format choose the Key Format from the drop down menu Hex ASCII Pre shared Key Setting the WEP key for encrypting data 64bits and 128bits encryption ar...

Page 48: ...ymmetric 128 bit block data encryption technique AES works at multiple network layers simultaneously Figure 30 WPA PSK AES Settings Phrase Setting the WPA PSK AES key for encrypting data 8 to 63 chara...

Page 49: ...link between the remote and local bridges Cancel restore all previous values Apply save changed configuration The WDS mode is configured by selecting the WDS link peer bridges MAC address in each othe...

Page 50: ...lays the SSID of the bridge Data Rates displays the data rates that the bridge transmits data RSSI displays indicator for the signal strength of the link between the remote and local bridges Note usua...

Page 51: ...two wired networks BRIDGE1 can be configured to forward all data to BRIDGE2 BRIDGE1 and BRIDGE2 need to be changed to Bridge1 and Bridge2 Illustration figures need to be changed to reflect this as wel...

Page 52: ...between Bridge2 and Bridge3 Choose the Wireless MAC address Bridge2 and Bridge3 in the Bridge1 Web interface WDS Links menu under the Configuration Choose the Wireless MAC address Bridge1 in the Brid...

Page 53: ...information of this bridge Device Name specify new name value used for user authentication in the system 1 60 characters Location Password specify new password value used for user authentication in t...

Page 54: ...ation changes Figure 34 Change Administrator s Name and Password Name specify new name value used for user authentication in the system 3 16 characters New Password specify new password value used for...

Page 55: ...on in the system 3 16 characters New Password specify new password value used for user authentication in the system 3 16 characters Confirm Password re enter the new password to verify its accuracy Ap...

Page 56: ...ward Delay is the time intervals in seconds in which all devices transmit a configuration message when this device becomes the root Hello Time is the time interval in seconds in which this device tran...

Page 57: ...ble setting Wireless Bridge time manually The format of the setting time is year month day hourminute second such as 2000 01 01 20 01 30 Get Local Time Click button Get Local Time the time of the PC w...

Page 58: ...more SNMP managers We provide two versions SNMP Management way SNMP V1 and SNMP V3 SNMP V3 is more security than V1 Figure 39 SNMP Settings SNMP V1 PARAMETERS Read only Community is a community strin...

Page 59: ...t SNMP Trap information to this host To add a host into this list specify the SNMP manager IP address And then click the Add button To delete a host from the SNMP Trap Host list select the host IP add...

Page 60: ...guration via HTTP Figure 41 Backup Restore configuration via HTTP Click the Browser button to select a configuration file and then click the Restore button to upload it to the device by HTTP protocol...

Page 61: ...ned is in service first If it is not the backup or restore will not be successful and could damage the bridge Figure 42 Backup Restore configuration via TFTP TFTP Server IP Address The TFTP Server s I...

Page 62: ...the backup or restore will not be successful and may damage the bridge Figure 43 Backup Restore configuration via FTP FTP Server IP Address The FTP Server s IP Address File Name The configure file s n...

Page 63: ...irmware via HTTP Figure 44 Firmware Upgrade via HTTP Click Browse Button and select the firmware file Then the Upgrade button will be active automatically and click it After you confirm upgrade Firmwa...

Page 64: ...er which you assigned is in service first If it is not the upgrade will not be successful and may damage the bridge Figure 46 Firmware Upgrade via TFTP TFTP Server IP Address The TFTP Server s IP Addr...

Page 65: ...ss The FTP Server s IP Address File Name The configure file s name you backup or restore User Name This user point to the ftp server account Password User s password Apply Apply the FTP Server Setting...

Page 66: ...e device will reboot after you confirm Reboot will power down and power up the Bridge It will not reset any configuration settings Reset Figure 49 Reset Wireless Bridge Click Reset button the device w...

Page 67: ...s Level shows how important the event or how critical the error is Emergency Alert Critical Error Warning Notice Info Debug Facility indicates the unique identifier of the facility that generated the...

Page 68: ...o an log server by setting the Remote Log Server Figure 51 Event Log Setup TFTP Server IP Address The TFTP Server s IP Address File Name The configure file s name you backup or restore Apply Apply the...

Page 69: ...can filter logs by Logs Category Second one can filter logs by Logs level You could make the kernel to generate the event logs that you are interested by selecting the combinations of check boxes in...

Page 70: ...mount of received bytes on the interface including framing characters InUcast totals unicast frames received at the port excluding discards InMcast totals multicast frames received at the port excludi...

Page 71: ...tted MSDU after one or more retransmissions Multi Retry Count displays the number of successfully transmitted MSDU after more than one retransmission Duplicate Frames displays the total of duplicate f...

Page 72: ...root of the spanning tree Max Age is the maximum time in seconds this device can wait without receiving a configuration message before attempting to reconfigure Hello Time is the time interval in seco...

Page 73: ...f the port on this switch that is closest to the root This switch communicates with the root device through this port This is 0 if your bridge is the root device Refresh Refresh local page and all the...

Page 74: ...rk values are restored NOTE on the outdoor bridge the RESET button is located on the PCB behind the removable panel Once the panel is removed the reset button is located next to the CAT5 connection on...

Page 75: ...ager WIDMAN discover the wireless bridge 2 Double click the wireless bridge logo listed in the list box 3 If the 3Com Wireless Infrastructure Device Manager WIDMAN found the wireless bridge but could...

Page 76: ...ough 11 can be used indoors and outdoors Users are responsible for ensuring that the channel set configuration compiles with the regulatory standards of Mexico France is included in the EMEA regulator...

Page 77: ...m 4 8 x 3 3 x 1 5 in L x W x D Weight 350g includes mounting kit Environment Specification Outdoor 3CRWEASYG73 Temperature 33 to 50 Humidity Up to 95 Indoor 3CRWE920G73 Temperature 20 to 65 Humidity U...

Page 78: ...th Point to Point and Point to Multi Point connections Support WDS Supports WPA PSK with TKIP or AES Advanced Encryption Standard encryption 64 128 bit WEP DHCP Server Client Hide SSID Broadcast Web M...

Page 79: ...Technically the difference in Hertz Hz between the highest and lowest frequencies of a transmission channel However as typically used the amount of data that can be sent through a given communication...

Page 80: ...col by which data is sent from one computer to another on the Internet Each computer known as a host on the Internet has at least one IP address that uniquely identifies it from all other computers on...

Page 81: ...et protocol IP and is designed to handle others It is sometimes considered a member of the TCP IP suite of protocols Relative to the Open Systems Interconnection OSI reference model PPP provides layer...

Page 82: ...the Internet Protocol IP to send data in the form of message units between computers over the Internet While IP takes care of handling the actual delivery of the data TCP takes care of keeping track o...

Page 83: ...distinguishes a broader telecommunication structure from a local area network LAN A wide area network may be privately owned or rented but the term usually connotes the inclusion of public shared user...

Page 84: ...t and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device co...

Page 85: ...e requirement 3 Effective power output According to US Rule CFR 47 part 15 Section 15 247 Operation within the bands 902 928 MHz 2400 2483 5 MHz and 5725 5850 MHz the authorized maximum peak conducted...

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