BreezeNET DS.11 Series AP-DS.11 SA-DS.
© 1999 by BreezeCOM Ltd. All rights reserved. No part of this publication may be reproduced in any material form without the written permission of the copyright owner. No part of this publication may be reproduced in any material form without the written permission of the copyright owner. Trade Names BreezeNET and BreezeLINK are trade names of BreezeCOM Ltd. Other brand and product names are registered trademarks or trademarks of their respective companies.
Statement of Conditions The information contained in this manual is subject to change without notice. BreezeCOM Ltd. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this manual or equipment supplied with it. Warranty In the following warranty text, “the Company” shall mean: - BreezeCOM Inc., for products located in the USA. - BreezeCOM Ltd., for products located outside the USA.
FCC Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
• Site information such as possible radio path problems (like trees, machines, and buildings). • Distance between devices. • Configuration, statistic counters, and error messages as seen on the monitor. • Description of problems encountered. To contact BreezeCOM Technical Support, refer to the Technical Support page of the BreezeCOM web site: www.breezecom.
Table of Contents TABLE OF CONTENTS 1. Introduction............................................................................................................ 1 1.1 How to Use This Guide..................................................................................................1 1.2 BreezeNET DS.11 Features ...........................................................................................2 1.3 BreezNET DS.11 Compatibility and Standards.......................................................
Table of Contents 4.1.4 The WLAN Parameters Tab ................................................................................... 21 4.1.5 The RSSI tab ........................................................................................................... 22 4.1.6 The Counters Tab.................................................................................................... 23 4.1.7 The Station Control Tab .........................................................................................
Table of Figures TABLE OF FIGURES Figure 1-1. A Typical DS.11 installation with indoor and outdoor systems ........................5 Figure 2-1. DS.11 LEDs .......................................................................................................6 Figure 2-2. DS.11 Rear Panel ...............................................................................................7 Figure 4-1. BreezeCOM Manager Main Window (IP/SNMP Tab)....................................17 Figure 4-2. IP/SNMP Tab ......
Appendix A. Radio Signal Propagation 1. INTRODUCTION This chapter describes the main features of the BreezeNET DS.11 Wireless LAN, which includes the following products: • AP-DS.11 - Wireless Base Station • SA-DS.11 - Wireless Bridge Client Also in this chapter: relevant standards, compatibility issues, product functionality and use of the DS (Direct Sequence) WLAN. 1.
Appendix A. Radio Signal Propagation ⇒ Chapter 6 Technical Specifications - Lists the technical specifications for the BreezeNET DS.11 series units. 1.2 BreezeNET DS.11 Features The following are the main features of the BreezeNET DS.11 series: • Rate - 11 Mbps with 5.5, 2, and 1 Mbps auto fallback rates. • LED Display – Power, Network Activity, and WLAN Load or Signal Quality LEDs indicate the current status of the unit. • Upgrading – Simple, quick, and free software upgrades via TFTP.
Appendix A. Radio Signal Propagation 1.3 BreezNET DS.11 Compatibility and Standards • IEEE 802.11 TGb Compliant – All BreezeNET DS.11 series units are fully compliant with the final IEEE 802.11 specification for wireless LANs, and thus support interoperability with other 802.11 compliant vendors. • Completely inter-operable with other 802.11 and 802.11 TGb products • Supports the common SNMP standard MIB groups and the 802.11 MIB • Uses the 2.4 Ghz ISM unlicensed band 1.4 BreezeNET DS.
Appendix A. Radio Signal Propagation The first time each station on the SA-DS.11’s LAN sends a message, the station’s address is registered in the SA-DS.11 and the AP-DS.11. The SA-DS.11 and APDS.11 can hold all the addresses necessary to support an entire LAN connected to a SA-DS.11. 1.5 Where to Use DSSS DSSS technology (Direct Sequence Spread Spectrum) spreads a signal power over 22MHz bandwidth; the same frequency is used for each transmission. This provides the DS.
Appendix A. Radio Signal Propagation WBS-DS.11 AP-DS.11 DSSS SA-DS.11 DSSS DSSS WBC-DS.11 SA-DS.11 AP-DS.11 SA-DS.11 Figure 1-1. A Typical DS.11 installation with indoor and outdoor systems BreezeNET DS.
Appendix A. Radio Signal Propagation 2. INSTALLATION 1. Mount the antenna (see BreezeNET User's Manual) and locate the AP/SA accordingly. 2. Make sure the antennas are in a vertical position (if not, rotate over 90 degrees). 3. Insert the power connector. 4. Attach the Unshielded Twisted Pair (UTP) cable to the Wireless Base Station. 5. Switch on the unit. 2.1 Checking The LED Indicators Backbone Traffic Power & Firmware Status Association/ Radio Traffic Figure 2-1. DS.
Appendix A. Radio Signal Propagation The following table lists the DS.11 LEDs and their diagnostics: LED Color Explanation Association/Radio Traffic Backbone Traffic Power & Firmware Status Green The server sends beacons immediately (10/s). while the station is scanning; the LED blinks irregularly until it is synchronized Power & Firmware Status Red Firmware did not start. Power fault or wrong firmware. Backbone Traffic Red No network connection detected.
Appendix A. Radio Signal Propagation 1.1. Indoor Installation considerations This chapter describes various considerations to take into account when planning an indoor installation including site selection, antenna diversity, antenna polarization, construction materials, and cell size. Figure 0.1: BreezeNET LAN in a typical office environment 1.1.1. Site Selection Factors BreezeNET DS.
Appendix A. Radio Signal Propagation Metal Furniture Position the units clear of metal furniture and away from moving objects such as metal fans or doors. Microwave Ovens For best performance, position the units clear of radiation sources that emit in the 2.4 GHz frequency band, such as microwave ovens. Antennas Make sure the antennas are extended upward vertically in relation to the floor. For models with external antennas, connect the external antennas and RF cable.
Appendix A. Radio Signal Propagation • In the center of a corridor. • At the intersection of two corridors. Many modern buildings have partitions constructed of metal or containing metal components. We recommend that you install the Access Points on the corridor ceilings. The radio waves propagated by the BreezeNET DS.11 LAN are reflected along the metal partitions and enter the offices through the doors or glass sections. 1.1.2.
Appendix A. Radio Signal Propagation travel in a straight line, but is reflected or deflected off of the object, creating multiple propagation paths. When installing a single antenna, modify the transmit antenna option to either antenna 1 or antenna 2, according to the antenna being used (refer to section Error! Reference source not found.). 1.1.2.2 Antenna Polarization Antenna polarization must be the same at either end of the link.
Appendix A. Radio Signal Propagation Table 0.1: Signal Loss Chart Obstruction Additional Loss (dB) Effective Range Approx. Range Open Space 0dB 100% 1000ft. (300m) Window (non-metallic tint) 3dB 70% 700ft. (215m) Window (metallic tint) 5-8dB 50% 500ft. (150m) Light Wall (dry wall) 5-8dB 50% 500ft. (150m) Medium Wall (wood) 10dB 30% 300ft. (100m) Heavy Wall (solid core 6”) 15-20dB 15% 150ft. (50m) Very Heavy Wall (solid core 12”) 20-25dB 10% 100ft.
Appendix A. Radio Signal Propagation The suggested maximum distance between Access Point and workstation: Standard AP-DS.11 DS.11: ...........................200m (600 ft.) Semi-Open Indoor Areas Open-plan offices partitioned into individual workspaces, factory floor areas, warehouses, etc. The suggested maximum distance between Access Point and workstation: Standard AP-DS.11 DS.11 ............................100m (300 ft.
Appendix A. Radio Signal Propagation 3. SYSTEM TROUBLESHOOTING The following troubleshooting guide provides answers to some of the more common problems which may occur when installing and using BreezeNET DS.11 Series products. If problems not mentioned in this guide should arise, checking the Ethernet and WLAN counters may help (see Section Error! Reference source not found.). If the problem persists, please feel free to contact your local distributor or the BreezeCOM Technical Support Department. 3.
Appendix A. Radio Signal Propagation Problem and Indication Failure to establish wireless link Possible Cause 1. Power supply to units may be faulty. 2. Cables may be improperly connected 3. There may be some problem with antenna installation. Corrective Action 1. Verify power to units. 2. Verify that all cables are connected securely. 3. Refer to previous Section and verify wireless link between the units. 4.
Appendix A. Radio Signal Propagation 4. BREEZENET MANAGEMENT UTILITY The BreezeNET DS.11 is an SNMP-based (Simple Network Management Protocol) management utility that provides a consistent view of the wireless network. The systems administrator can use the management utility to control a large number of DS.11 Access Points from a single location.
Appendix A. Radio Signal Propagation Tabs area Community and IP address selection area Figure 4-1. BreezeCOM Manager Main Window (IP/SNMP Tab) 4.1.1 Selecting IP Addresses of Units You can select a unit's IP address in one of the following ways: • Click the button. All the current units IP addresses (under the selected community) are displayed in the list box below. Doubleclick on an address to select it.
Appendix A. Radio Signal Propagation Note: If you select an IP address of a AP-DS.11 unit, the signal quality is displayed in the Signal Quality tab. This tab displays a table that lists all the MAC addresses, connected to that AP, and their signal quality. When the community is Read the parameters are grayed out (disabled). 4.1.2 The IP/SNMP Tab All BreezeNET DS.11 units contain IP Host software.
Appendix A. Radio Signal Propagation 4.1.2.1 Assigning and Editing IP Parameters Using the Network Autodiscovery 1. Type the known Read/Write Community string in the Community field (the default string is Private). 2. Select a unit address as describe in Section 4.1.1. The unit's Read-Read/Write Community strings appear in the SNMP Communities area of the window, and the unit's parameters appear in the IP Parameters area of the window: • Read - The read only community string of the unit.
Appendix A. Radio Signal Propagation 2. Type the parameters in the appropriate fields and click OK. A message box is displayed notifying you when the changes to take affect. 4.1.3 The General Info Tab The General Info tab displays general information regarding the unit's firmware and hardware versions, and general unit address information. Figure 4-4. General Info Tab • Firmware - the current firmware version. • Hardware - the current hardware version. • System Name - the name of the selected unit.
Appendix A. Radio Signal Propagation 4.1.4 The WLAN Parameters Tab Figure 4-5. WLAN Parameters Tab 1. Set the ESS ID of the WLAN. 2. Select a channel. 3. Set Antenna diversity to Antenna No. 1, No. 2, or both. 4. Set the desired bit rate. For maximum bit rate support, check both 5.5 Mbps and 11 Mbps. Note: The 1 Mbps and 2 Mbps bit rates are checked by default. In case of interference, the BreezeNET Management utility automatically falls back to the lower bit rate. BreezeNET DS.
Appendix A. Radio Signal Propagation 4.1.5 The RSSI tab This tab allows you to view signal quality of WBC units and the associated stations. Select an IP address as explained previously in Section 4.1.1. In the Associated Stations you can see all the stations associated with the selected unit and their signal quality. User's Manual A-22 BreezeNET DS.
Appendix A. Radio Signal Propagation 4.1.6 The Counters Tab Figure 4-6. Counters Tab Select a counter and drag it to the graph icon to view the graph. • Transmit Fragment - The total number of transmitted frames. The count includes data, control and management frames and also the number of retransmissions of data frames (for example, if the same data frame is retransmitted ten times then the count will increase ten times).
Appendix A. Radio Signal Propagation 4.1.7 The Station Control Tab Figure 4-7. The Station Control Tab Station Control - Click the settings. button to revert back to the factory default Configuration - Click Import/Export to import or export a complete set of configuration parameters to an external file. User's Manual A-24 BreezeNET DS.
Appendix A. Radio Signal Propagation 4.1.8 The Log Tab Figure 4-8. Log Tab When an event occurs, a trap is sent to the defined host address. The Log tab allows you to configure the host address to which the traps are sent. A list of the last traps is displayed in the event log area, below the Local IP field. The default host address is the IP address of the PC running the BreezeNET Management utility. 1. Select the IP address as explained earlier. the selected address appears in the Local IP field. 2.
Appendix A. Radio Signal Propagation 4.1.9 Debug Info This option allows you to create a log file, named BreezeLog.log. Later you can send this log file to BreezeCOM Technical Support and receive help based on the information recorded in this file. To start recording, open the Debug Info option and select Start Log. When you finish recording (usually after 24 hours) select Stop Log and send the file to BreezeCOM Technical Support representatives. 4.
Appendix A. Radio Signal Propagation 4.3 More about Cells Each Access Point in the network forms the center of a cell, or BSS. The Cells should overlap slightly to guarantee seamless wireless connectivity everywhere. Neighboring Access Points should preferably send and receive on different channels for maximum throughput. Creating a cell plan for your site can be complicated, and is usually done by experts employing special measuring equipment.
Appendix A. Radio Signal Propagation 5. SOFTWARE DOWNLOAD PROCEDURE 1. Set the unit's IP address, using the BreezeCOM Manager utility, and verify that the PC's IP address belongs to the same Subnet Mask as the unit. 2. Ping the unit's IP address. Make sure that the Ping replies are being received. 3. Use the TFTP utility on the PC: a) Syntax: TFTP [-i] destination host [PUT] source file [password] b) Example: TFTP -i 199.203.141.30 put ap1100.
Appendix A. Radio Signal Propagation 6. TECHNICAL SPECIFICATIONS 6.1 Supported Standards • Compliant with ETS 300 328 and ETS 300 826 (CE marked) • IEEE 802.11 standard for Wireless LAN • All major networking standards (including IP, IPX) 6.2 Environmental Operating temperature (ambient) 0°C to 55°C (32°F to 131°F) Storage temperature -5°C to 70°C (23°F to 158°F) Operating humidity 10% to 90% (non-condensing) Storage humidity 5% to 95% (non-condensing) 6.
Appendix A. Radio Signal Propagation 6.4 Radio specifications Range outdoors up to 15 miles Transmit power +18 dBm +2 dBm (Low power for use with high gain antenna) Frequency range 2.4-2.4835 Ghz, direct sequence spread spectrum Number of Channels Europe:13 (3 non-overlapping) US: 11 (3 non-overlapping) France: 4 (1 non-overlapping) 6.5 Specific features Supported bit rates Utility Software • 11 Mbps • 5.5 Mbps • 2 Mbps • 1Mbps DS11 BreezeNET Management utility 6.
Appendix A. Radio Signal Propagation BreezeNET DS.
