BreezeNET DS.11 Series WBS-DS.11 WBC-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.
Table of Contents TABLE OF CONTENTS 1. Introduction......................................................................................................... 1-1 1.1 How to Use This Guide...............................................................................................1-1 1.2 BreezeNET DS.11 Features ........................................................................................1-2 1.3 BreezNET DS.11 Compatibility and Standards..........................................................
Table of Contents 3. System Troubleshooting ..................................................................................... 3-1 3.1 Troubleshooting Guide ...............................................................................................3-1 4. BreezeNET Management Utility.......................................................................... 4-3 4.1 BreezeNET Management Utility Main Window ........................................................4-3 4.1.1.............................
Table of Figures TABLE OF FIGURES Figure 1-1. A Typical DS.11 Wireless Bridging Combined with FHSS WLAN Segments1-5 Figure 2-1. DS.11 LEDs ....................................................................................................2-6 Figure 2-2. DS.11 Rear Panel ............................................................................................2-7 Figure 4-1. BreezeCOM Manager Main Window (IP/SNMP Tab)...................................4-4 Figure 4-2. IP/SNMP Tab .........................
Introduction 1. INTRODUCTION This chapter describes the main features of the BreezeNET DS.11 Wireless LAN, which includes the following products: • WBS-DS.11 - Wireless Base Station • WBC-DS.11 - Wireless Bridge Client Also in this chapter: relevant standards, compatibility issues, product functionality and use of the DS (Direct Sequence) WLAN. 1.
Introduction ⇒ Chapter 6 Technical Specifications - Lists the technical specifications for the BreezeNET DS.11 series units. ⇒ Appendix A. Radio Signal Propagation - This section explains and simplifies many of the terms relating to antennas and RF (Radio Frequency) used when dealing with an RF installation system. 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.
Introduction 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.
Introduction 1.4.3 WBC-DS.11 Wireless Bridge Client The WBC-DS.11 wireless bridge client connects to a wired Ethernet LAN (hub). When a station on the WBC-DS.11’s LAN sends a message that is not destined for a local station, the WBC-DS.11 wirelessly forwards the message to the WBSDS.11. When the WBS-DS.11 receives a message destined for a station on the WBC-DS.11's LAN, the WBS-DS.11 wirelessly forwards it to the WBC-DS.11. In this manner, the WBC-DS.11 and the WBS-DS.
Introduction WBS-DS.11 AP-10 FHSS SA-40 DSSS FHSS WBC-DS.11 SA-10 AP-10 SA-10 Figure 1-1. A Typical DS.11 Wireless Bridging Combined with FHSS WLAN Segments BreezeNET PRO.
Installation 2. INSTALLATION 1. Mount the antenna (see BreezeNET User's Manual) and locate the WBS/C 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.11 LEDs User's Manual 2-6 BreezeNET DS.
Installation 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.
Installation 2.3 Outdoor Installation Considerations This chapter describes various considerations to take into account when planning an outdoor installation. This includes site selection, antenna alignment, antenna diversity, antenna polarization, antenna seal, and cell size. 2.3.
Installation Install indoor antennas as close as possible to a window (or wall if a window is not accessible) facing the required direction. Avoid metal obstacles such as metal window frames or metal film anti-glare windows in the transmission path. Install outdoor antennas high enough to avoid any obstacles which may block the signal.
Installation 2.3.3 Antennas for Outdoor Applications The BreezeNET DS.11 series can be used in point-to-point or point-to-multipoint configurations. 2.3.3.1 Point-to-Point A point-to-point link is based on the use of one Access Point with external antennas (WBS-DS.11) and one adapter. The DS.11 and the WBC-DS.11 must be equipped with one or two directional antennas. The necessary antenna gain depends on the required range and performance. 2.3.3.
Installation 5. Power on both units. 6. Synchronize the units by aligning the antennas manually until the Association/Radio Traffic indicator LED on the front panel of the wireless Bridge and/or Station Adapter illuminates. 7. Align antennas at the main and remote sites until maximum signal quality is obtained. If the received signal quality is lower than expected for this antenna/range combination, change antenna height and verify RF cables connections. 2.3.3.
Installation 2.3.4 Antenna Seal When using outdoor antennas, you must seal the antenna connectors against rain. Otherwise the antennas are not suitable for use in outdoor installations. 2.3.5 Cell Size Cell size is determined by the maximum possible distance between the Access Point and the Bridge unit, usually related to point-to-multipoint installations using external antennas. For open outdoor areas with an unobstructed line of sight between the Access Point and the BreezeNET DS.
Installation 2.3.7 Using Outdoor Range Tables Outdoor installations must have a clear line-of-sight. Solid obstacles such as buildings or hills prevent the establishment of a link. Partial obstacles such as trees or traffic can reduce range. Extending coaxial cables can cause an increase in assembly signal loss and a reduction in range. The ranges in the following tables are attained under good propagating conditions when using the standard cables supplied in the antenna set.
Installation 2.4 Precautions Note: Detached antennas, whether installed indoors or out, should be installed ONLY by experienced antenna installation professionals who are familiar with local building and safety codes and, wherever applicable, are licensed by the appropriate government regulatory authorities. Failure to do so may void the BreezeNET Product Warranty and may expose the end user to legal and financial liabilities.
Installation The lightning arrestor should be installed and grounded at the point where the cable enters the building. The arrestor is connected to the unit at one end and to the antenna at the other end. The professional installer you choose must be knowledgeable about lightning protection. The installer must install the lightning protector in a way that maximizes lightning protection. BreezeCOM offers the following high-quality lightning arrestor assembly: BreezeNET AL 1 Lightning Arrestor - Part No.
System Troubleshooting 3. SYSTEM TROUBLESHOOTING The following troubleshooting guide provides answers to some of the more common problems which may occur when installing and using BreezeNET PRO.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.
System Troubleshooting Problem and Indication Failure to establish wireless link (“D” models/external antennas) 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.
BreezeNET Management Utility 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.
BreezeNET Management Utility 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.
BreezeNET Management Utility Note: If you select an IP address of a WBS-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.
BreezeNET Management Utility 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.
BreezeNET Management Utility 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.
BreezeNET Management Utility 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. User's Manual 4-8 BreezeNET DS.
BreezeNET Management Utility 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. BreezeNET PRO.
BreezeNET Management Utility 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).
BreezeNET Management Utility 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. BreezeNET PRO.
BreezeNET Management Utility 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.
BreezeNET Management Utility 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.
BreezeNET Management Utility 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.
Software DownLoad Procedure 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.
Technical specifications 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.
Technical specifications 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 APPENDIX A. RADIO SIGNAL PROPAGATION A.1 Radio Signal Propagation A.1.1 Introduction This section explains and simplifies many of the terms relating to antennas and RF (Radio Frequency) used when dealing with an RF installation system. The following diagram depicts a typical radio system: Figure A-1. A Typical Radio System A radio system transmits information to the transmitter.
Appendix A. Radio Signal Propagation A.1.2 RF Terms and Definitions dB The dB convention is an abbreviation for decibels. It shows the relationship between two values. RF Power Level RF power level at either the transmitter output or the receiver input is expressed in Watts. It can also be expressed in dBm.
Appendix A. Radio Signal Propagation For example: If, due to attenuation, half the power is lost (Pout/Pin = 1/2), attenuation in dB is -10 x Log (1/2) = 3dB Path Loss Loss of power of an RF signal traveling (propagating) through space. It is expressed in dB.
Appendix A. Radio Signal Propagation accepted by the antenna was radiated equally in all directions (isotropically). Antenna gain is expressed in dBi. Radiation Pattern A graphical representation in either polar or rectangular coordinates of the spatial energy distribution of an antenna. Side Lobes The radiation lobes in any direction other than that of the main lobe. Omni-directional Antenna Radiates and receives equally in all directions in azimuth.
Appendix A. Radio Signal Propagation Directional Antenna Radiates and receives most of the signal power in one direction. The following diagram shows the radiation pattern of a directional antenna with its side lobes in polar form: Figure A-5. Radiation Pattern of Directional Antenna Antenna Beamwidth The directiveness of a directional antenna. Defined as the angle between two halfpower (-3 dB) points on either side of the main lobe of radiation.
Appendix A. Radio Signal Propagation GrReceiving antenna gain in dBi PlPath loss in dB CrReceiver cable attenuation is dB SiReceived power level at receiver input in dBm PsReceiver sensitivity is dBm Si = Pout - Ct + Gt - Pl + Gr - Cr EIRP = Pout - Ct + Gt Example: Link Parameters: Frequency: 2.4 Ghz Pout = 4 dBm (2.5 mW) Tx and Rx cable length (Ct and Cr) = 10 m. cable type RG214 (0.
Appendix A. Radio Signal Propagation Signal Fading Fading of the RF signal is caused by several factors: • Multipath The transmitted signal arrives at the receiver from different directions, with different path lengths, attenuation and delays. The summed signal at the receiver may result in an attenuated signal. Figure A-6. Multipath Reception Bad Line of Sight An optical line of sight exists if an imaginary straight line can connect the antennas on either side of the link.
Appendix A. Radio Signal Propagation Interference may be caused by another system on the same frequency range, external noise, or some other co-located system. The Line of Sight Concept An optical line of sight exists if an imaginary straight line can be drawn connecting the antennas on either side of the link. Clear Line of Sight A clear line of sight exists when no physical objects obstruct viewing one antenna from the location of the other antenna.
Appendix A. Radio Signal Propagation D: distance between sites Figure A-8. Fresnel Zone Clear of Obstacles When at least 80% of the first Fresnel Zone is clear of obstacles, propagation loss is equivalent to that of free space. BreezeNET PRO.
