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- 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 3 LICENSE.TXT or !LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be provided to you.
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Page 4: Table Of Contents
INSTALLING THE WIRELESS BRIDGE Overview Scope of Delivery Hardware Installation Installing the 3CRWE920G73 Indoor Wireless Bridge Installing the 3CRWEASYG73 Outdoor Wireless Bridge Install ing the 3CRWEASYG73/3CRWE920G73 Antenna Antenna Specification Connect to the Power Source and the Local Network LED Indicators... - Page 5 System Status Statics STP Statics STP Port TROUBLESHOOTING Reset to Factory Default procedure Setting IP Address Using 3Com Wireless Infrastructure Device Manager Hardware and software requirements Discover the wireless bridge Initializing the IP Address using 3Com Wireless Infrastructure Device Manager SPECIFICATIONS...
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Page 6: About This Guide
UIDE Purpose This document provides information and procedures on hardware installation, setup, configuration, and management of the 3Com Corporation 802.11g Wireless Bridge. Prerequisite Skills and Knowledge To use this document effectively, you should have a working knowledge of Local Area Networking (LAN) concepts and wireless Internet access infrastructures. In addition, you should be familiar with the following: ♦... -
Page 7: Conventions Used In This Document
If you encounter problems when installing or using this product, please consult the 3Com Corporation website at http://www.3Com.com ♦ The latest software, user documentation and product updates. ♦ Frequently Asked Questions (FAQ). ♦ Direct contact to the 3Com Corporation support centers. 3Com Corporation Page 6... -
Page 8: Introduction
NTRODUCTION Thank you for choosing the 3Com Corporation 802.11g Wireless LAN Building to Building Bridge. This manual will give you a short introduction to the device and its hardware and show you how to install and set up the Wireless Bridge. -
Page 9: Operating Modes
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 bridge between wireless and wired networks. -
Page 10: Installing The Wireless Bridge
NSTALLING IRELESS RIDGE Overview This chapter provides installation instructions for the hardware and software components of the 3Com Corporation 802.11g Wireless Bridge. It also includes the following information: ♦ Package content ♦ Hardware installation ♦ Software installation Scope of Delivery Please ensure that the package is complete before beginning with the installation. -
Page 11: Hardware Installation
3. Install the two flathead screws at the marks on the wall. Leave the screw heads protruding 6-mm (1/4 inch) from the surface of the wall. 4. Hang the bridge on the screws, using the mounting holes on the back of the bridge. 3Com Corporation Page 10... - Page 12 3. Tighten the screws on each T-rail grip. After installation, there may be some play in the fit of the T-rail grips if the T-rails are very narrow. If necessary, add a shim to achieve a secure grip. 3Com Corporation Page 11...
- Page 13 ♦ 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. 3Com Corporation Page 12...
- Page 14 Make certain that the antenna and antenna mast are appropriately grounded. Proper grounding prevents injury or damage from lightning strikes. To minimize risk of damage to your network equipment, install and properly ground the included lightning arrestor on the outdoor bridge. 3Com Corporation Page 13...
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Page 15: Installing The 3Crweasyg73 Outdoor Wireless Bridge
Installing the 3CRWEASYG73 Outdoor Wireless Bridge Mount the Unit to a Mast Follow the instructions that come with the bridge mounting hardware and follow the general guidelines listed below. NOTE: Mast should extend above bridge 1 meter (3 ft) Recommended Pole Diameter = 2”... - Page 16 If cross-polarization occurs, the link with either work poorly or not at all. Please refer to the “Polarization” section of the User Guide for further details. The following illustration shows proper alignment, orientation and polarization for optimal performance. 3Com Corporation Page 15...
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Page 17: Installing The 3Crweasyg73/3Crwe920G73 Antenna
In case you are not certain about the regulations that apply in your country, consult your local 3Com representatives. -
Page 18: Antenna Specification
Antenna Specification The following antennas and cables are available from 3Com Corporation: ♦ Antennas 3CWE492 2.5dBi ceiling mount 3CWE490 4 dBi Omni-directional 3CWE491 8 dBi Omni-directional 3CWE495 13 dBi Sector-Panel 3CWE496 18 dBi Sector-Panel 3CWE498 8 dBi sector panel Directional... -
Page 19: Connect To The Power Source And The Local Network
Connect to the Power Source and the Local Network 3CRWE920G73 Indoor Wireless Bridge Connect a twisted pair CAT5 Ethernet cable from the ”To Hub/Switch” port of the PoE Adapter to a free port on the hub switch within local network 3CRWEASYG73 Outdoor Wireless Bridge 3Com Corporation Page 18... -
Page 20: Led Indicators
Off: Power supply connection not available or broken On: Power supply connection OK WIRELESS activity LED Off: No activity Blinking: Sending and receiving data ETHERNET LAN link LED Off: No LAN connection available On: LAN connection OK 3Com Corporation Page 19... -
Page 21: Software Installation
3Com Wireless Infrastructure Device Manager (WIDMAN) – an administration tool that helps you select 3Com wireless LAN devices and launch their configurations in your Web browser. 3Com 3CDaemon Server Tool – a firmware upgrade tool that can act in four different capacities: ♦... -
Page 22: Find Your New Wireless Bridge
[Note: default password is “blank”] NOTE: It can take up to 60 seconds for the 3Com Building to Building Bridge to boot up after power has been connected. The Bridge will not appear in the WIDMAN utility unit boot up is complete. - Page 23 2. Antenna and Cable settings only apply to indoor bridge. After changing these settings, you will be redirected to the Login page. Please input the username and password that you setup on the initial page, and then you will login in the device successfully. 3Com Corporation Page 22...
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Page 24: Using The Diagnostic Utility
Using the Diagnostic Utility The Diagnostic Utility will help you review the status of 3Com wireless bridge, do a site survey for discovering wireless device around the wireless bridge. The Diagnostic Utility must be installed on a computer that: ♦... - Page 25 Figure 2 – Diagnostic Utility Main Page On the SysInfo page, you will see the system uptime, bridge MAC address and the Firmware version number. 3Com Corporation Page 24...
- Page 26 To check the system performance information, click the Performance tab. Figure 3 – System Performances The Performance tab displays the CPU and memory usage information. 3Com Corporation Page 25...
- Page 27 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 wireless bridge, the list box will be empty. 3Com Corporation Page 26...
- Page 28 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 wireless bridge. 3Com Corporation Page 27...
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Page 29: Contents Of Cd
The Site Survey page displays all other wireless sites. Contents of CD The CD-ROM which is enclosed in the package should include the following contents: ♦ 3Com 802.11g 54Mbps Wireless LAN Building to Building Bridge User Guide ♦ MIB Directory Includes 3Com MIBs for Network Management usage ♦... -
Page 30: Wireless Bridge Configuration
Set the administrator name, password, Country, and for the indoor bridge, Antenna and Cable selection. Next, press the Change button. This will set the new administrator name and password. NOTE: The Web pages are best viewed at 1024x768. 3Com Corporation Page 29... -
Page 31: Accessing The Web Manager Interface
Figure 8 – Login Page Enter the administrator name and password, and then press the Login button. The Web Manager User interface Device Summary will be displayed as follows: Figure 9 – Device Summary 3Com Corporation Page 30... -
Page 32: Setup Wizard
Back – click return to the previous wizard page. Next – click to continue the bridge setup process. Cancel – click to cancel the bridge setup process. To continue the setup wizard click Next button. 3Com Corporation Page 31... -
Page 33: Security Setup
If no security is needed, simply choose the None radio button: Figure 11 – Security Settings Back – return to the previous wizard page. Next – continue the bridge setup process. Cancel – cancel the bridge setup process. 3Com Corporation Page 32... - Page 34 If you want to choose AES-PSK encryption, select the WPA-PSK (AES) radio button in the Security Setup page and click the Next button to configure the AES PSK Phrase. Figure 14 – WPA-PSK (AES) Settings Phrase – specify WPA-PSK (AES) password [8-63 characters] (e.g. aabbccdd). 3Com Corporation Page 33...
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Page 35: Wds Links Setup
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 setup process. NOTE: All WDS links use the same security settings. 3Com Corporation Page 34... -
Page 36: Setup Finished
Figure 16 – Confirm Settings This Page shows the settings summary of Setup Wizard configuration. Back – return to the previous wizard page. Finished – to complete the setup wizard. Cancel – cancel the bridge setup process. 3Com Corporation Page 35... -
Page 37: Device Summary
Firmware version – The version of current firmware. Hardware Version – displays the version number of the software/firmware that controls the bridge (this will be necessary for troubleshooting). Serial Number – The serial number of this bridge. 3Com Corporation Page 36... -
Page 38: Internet
Lease Time － Show the period over which a network address is allocated to a DHCP client. Verify Address － Probes the network for conflicting IP addresses before giving a suggested IP address to the requesting DHCP client. LAN MAC Address － Shows the MAC Address of this bridge. 3Com Corporation Page 37... -
Page 39: Wireless
Wireless network name (SSID) – is a unique name for your wireless network [1-32 symbols]. The default SSID is “3Com” but you should change this to a personal wireless network name. The SSID is important to identify bridge to bridge connections when choosing TKIP PSK or AES PSK as the security type. -
Page 40: Security
Security Type – Displays which security type this bridge is currently using. Pre-shared Key length– Choose the shared Key length from the drop-down menu [64-bits (10 characters)/128-bits (26 characters)]. Key Format –choose the Key Format from the drop-down menu [Hex/ ASCII]. 3Com Corporation Page 39... -
Page 41: Save Configuration
If you do not use the Save Configuration operation, and direct reboot device. All the changes you have done will be lost and no changes will be applied to the bridge. Figure 21 – Save Configuration 3Com Corporation Page 40... -
Page 42: Internet Settings
IP address assigned by the DHCP server is not predictable. The Wireless Bridge can be set as a DHCP server. Use DHCP configuration to provide dynamic client IP Address from a range of IP Address. 3Com Corporation Page 41... -
Page 43: Dhcp Server
Lease Time – the timeframe in which DHCP client can use the IP address. When lease time is expired, the client must request a DHCP IP address again. Verify Address – probes the network for conflicting IP addresses before giving a suggested IP address to the requesting DHCP client. 3Com Corporation Page 42... -
Page 44: Wireless Settings
This is a factory 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 name. The SSID is important to identify bridge to bridge connections when choosing TKIP PSK or AES PSK as the security type. - Page 45 Wireless Bridge invokes its RTS/CTS mechanism. Packets that exceed the specified RTS threshold trigger the RTS/CTS mechanism. The NIC transmits packets smaller than this threshold without using RTS/CTS [[0-2347] default: 2347 (2347 means that RTS is disabled)]. 3Com Corporation Page 44...
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Page 46: Security
The Wireless Security Settings Page shows the summary of wireless security settings, which includes Wired Equivalent Privacy (WEP), WPA-PSK (TKIP) and WPA-PSK (AES). Click each for details. Figure 27 – Wireless Security Settings Cancel – restore all previous values. Apply – save changed configuration. 3Com Corporation Page 45... - Page 47 WEP. Figure 29 – WPA-PSK (TKIP) Settings Phrase – Setting the WPA-PSK (TKIP) key for encrypting data. 8 to 63 characters support. This value must be the same as the one on remote bridge. 3Com Corporation Page 46...
- Page 48 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 characters support. This value must be the same as the one on remote bridge. 3Com Corporation Page 47...
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Page 49: Wds Links
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 name. The SSID is important to identify bridge to bridge connections when choosing TKIP PSK or AES PSK as the security type. - Page 50 Note: usually 0 ~ -40 are perfect, the worst is around -90. The value of RSSI changes depends on different antenna and environments. Cancel –restore all previous values. Apply – save changed configuration. Note: All WDS links use the same security settings. 3Com Corporation Page 49...
- Page 51 Choose the wireless MAC address of Bridge1 in the web configuration interface of Bridge2, menu WDS Links. Select the same radio channel and the data rates for both Bridges using the Radio page under the Wireless Settings > Wireless Setup. 3Com Corporation Page 50...
- Page 52 Choose the Wireless MAC address Bridge1 in the Bridge3 Web interface WDS Links menu under the Configuration. Select the same radio channel for the three Bridges using the Radio page under the Wireless Settings > Wireless Setup. 3Com Corporation Page 51...
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Page 53: Device Management
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 characters]. Confirm Password – re-enter the new password to verify its accuracy. Apply– Apply administrator’s password. 3Com Corporation Page 52... -
Page 54: System Access
Name – specify new name value used for user authentication 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. Apply– Apply administrator’s password. 3Com Corporation Page 53... - Page 55 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. Apply– Apply administrator’s password. Keep in mind that the Reset button will set the username and password back to default. 3Com Corporation Page 54...
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Page 56: Stp
Max Age –is the maximum time (in seconds) this device can wait without receiving a configuration message before attempting to reconfigure. Priority –is the priority of this device. It is a part of the bridge ID, which equal to Priority (2 bytes) plus bridge MAC address (6 bytes). 3Com Corporation Page 55... -
Page 57: Time
None – deny setting Wireless Bridge time manually. System Time Zone – Specify the Time Zone the place you are in. NTP Server IP – Specify the IP Address of the remote NTP (Network Time Protocol) Server. 3Com Corporation Page 56... -
Page 58: Snmp
Read/Write Community is a community string used to access the bridge by SNMP with 'get' and 'set' operations. SNMP V3 PARAMETERS: In this version, you can assign User Name, password and his right, read-only or read-write. 3Com Corporation Page 57... - Page 59 And then click the Add button. To delete a host from the SNMP Trap Host list, select the host IP address that should be deleted, and then click the Delete button. Figure 40 – SNMP Trap Settings 3Com Corporation Page 58...
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Page 60: System Tools
Click the Browser button to select a configuration file and then click the Restore button to upload it to the device by HTTP protocol. Or click the backup button to download the configuration file from device. 3Com Corporation Page 59... - Page 61 TFTP Server IP Address - The TFTP Server’s IP Address. File Name - The configure file’s name you backup or restore. Apply - Apply the TFTP Server Settings. Backup - Backup system configuration. Restore - Restore system configuration. 3Com Corporation Page 60...
- Page 62 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 Settings. Backup - Backup system configuration. Restore - Restore system configuration. 3Com Corporation Page 61...
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Page 63: Upgrade
Upgrade Attention: To upgrade your bridge firmware, please use the original image 3Com Corporation provided. Upgrade Firmware 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. - Page 64 Figure 46 – Firmware Upgrade via TFTP TFTP Server IP Address - The TFTP Server’s IP Address. File Name - The configure file’s name you backup or restore. Apply - Apply the TFTP Server Settings. Upgrade - Upgrade System software. 3Com Corporation Page 63...
- Page 65 When the upgrade is completed successfully, a confirmation message will appear and the bridge restarts. Do not switch off and do not disconnect the Wireless Bridge from the power supply during the firmware upgrade process as this will damage the device. 3Com Corporation Page 64...
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Page 66: Reboot
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 will reset after you confirm – CAUTION: All configuration settings will be reset to factory. 3Com Corporation Page 65... -
Page 67: Event Logs
Description – indicates description of the event. Count – indicates the number of times this event has occurred. Time – indicates time when this event has occurred, in months, days and hours: minutes: seconds since the bridge was started. 3Com Corporation Page 66... -
Page 68: Event Log Setup
Backup - Backup system logs via TFTP. Syslogs Server - You can active the automatically backup function by enable On button, or inactive it by clicking Off button. Syslogs Server IP Address - Remote Sys-log Server’s IP Address. 3Com Corporation Page 67... -
Page 69: Event Log Filter
Logs level. You could make the kernel to generate the event logs that you are interested, by selecting the combinations of check boxes in category and level. Figure 52– Event Log Filter Apply - Apply the Logs Filter Settings. 3Com Corporation Page 68... -
Page 70: System Status
OutOctets – shows the total transmitted frames of the interface in bytes, including framing characters. OutUcast – totals unicast frames transmitted from the port including discards. OutMcast – totals multicast frames transmitted from the port including discards. Refresh – Refresh local page and all the statistics. 3Com Corporation Page 69... - Page 71 Protocol Data Unit) of type Data or Management. Rx Multi Casts – displays the total of MSDU, received with the multicast bit set in the destination MAC address. FCS Errors – displays count of FCS (Frame Check Sequence) errors in received MPDU. 3Com Corporation Page 70...
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Page 72: Stp
Bridge Hello Time - is the time interval (in seconds) at which all devices transmit a configuration message when this device becomes the root. 3Com Corporation Page 71... -
Page 73: Stp Port
Peers Address –displays the MAC address of the remote WDS bridge(s). Name – The Alias of the remote WDS bridge. SSID – Displays the SSID of the bridge. Channel – Displays the channel of remote bridge Status – Displays the Status of the bridge. 3Com Corporation Page 72... -
Page 74: Troubleshooting
Once the panel is removed, the reset button is located next to the CAT5 connection on the PCB 2. After it starts up, use 3Com Wireless Infrastructure Device Manager (WIDMAN) to discover the wireless bridge. Setting IP Address Using 3Com Wireless Infrastructure Device Manager Use the following procedure to set an IP Address for your wireless bridge. -
Page 75: Initializing The Ip Address Using 3Com Wireless Infrastructure Device Manager
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 not be access it by it’s IP, the 3Com Wireless Infrastructure Device Manager (WIDMAN) will pop up a dialog for configuring the wireless bridge IP address. -
Page 76: Specifications
France is included in the EMEA regulatory domain; however, only channels 10 through 13 can be used in France. Users are responsible for ensuring that the channel set configuration compiles with the regulatory standards of France. 3Com Corporation Page 75... -
Page 77: Hardware Specification
1, 2, 5.5 and 11Mbps (Auto scaling), 6, 9, 12, 18,24, 36, 48 and 54 Mbps Indoor: 3CRWE920G73 Standard SMA Antenna connector Outdoor: 3CRWEASYG73 integrated 18dBi directional panel antenna, 19° beam width vertical and Integrated Antenna horizontal, vertical polarization Physical Specification... -
Page 78: Software Specification
Supports WPA-PSK, with TKIP or AES (Advanced Encryption Standard) encryption ♦ 64/128 bit WEP ♦ DHCP Server/Client ♦ Hide SSID Broadcast ♦ Web Management Interface ♦ NTP Client ♦ SNMP Management (MIBII, 802.11MIB, Private MIB) ♦ Remote software upgrade 3Com Corporation Page 77... -
Page 79: Glossary
DNS: Domain Name Service. An Internet service that translates a domain name such as 3Com AES: Advanced Encryption Standard, a symmetric Corporation to an IP address, in the form 128-bit block data encryption technique. - Page 80 An ISP has the equipment and the messages are processed by the IP software and telecommunication line access required to have a are not directly apparent to the application user. point-of-presence on the Internet for the geographic 3Com Corporation Page 79...
- Page 81 POP3 is built into the remote site (for example, an Internet service Netmanage suite of Internet products and one of provider), the session can be monitored for billing 3Com Corporation Page 80...
- Page 82 (Such a computer is frequently called a host which also includes the use of a digital certificate. computer.) More technically, Telnet is a user command and an underlying TCP/IP protocol for accessing remote computers. On the Web, HTTP 3Com Corporation Page 81...
- Page 83 XSL: (Extensible Style sheet Language), formerly called Extensible Style Language, is a language for creating a style sheet that describes how data sent over the Web using the Extensible Markup Language (XML) is to be presented to the user. 3Com Corporation Page 82...
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Page 84: Regulatory Information
REGULATORY INFORMATION The 3Com 802.11g Wireless LAN Building-to-Building Bridge must be installed and used in strict accordance with the manufacturer’s instructions as described in the user documentation that comes with the product. This device complies with the following radio frequency and safety standards. - Page 85 Professional installation instruction 1. Installation personal This product is designed for specific application and needs to be installed by a qualified personal who has RF and related rule knowledge. The general user shall not attempt to install or change the setting. 2.
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