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Alvarion BU-DS.11 User Manual

Breezenet ds.11 series
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BreezeNET DS.11 Series
BU-DS.11
RB-DS.11

User Manual

January 2005
S/W Version 4.2
P/N: 213993

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Summary of Contents for Alvarion BU-DS.11

  • Page 1: User Manual

    BreezeNET DS.11 Series BU-DS.11 RB-DS.11 User Manual January 2005 S/W Version 4.2 P/N: 213993...
  • Page 2 BreezeNET DS.11 Series User Manual...
  • Page 3 Alvarion, BreezeCOM, WALKair, WALKnet, BreezeNET, BreezeMANAGE, BreezeACCESS, BreezeMAX, AlvariSTAR, MGW, eMGW and/or other products and/or services referenced here in are either registered trademarks, trademarks or service marks of Alvarion. All other names are or may be the trademarks of their respective owners. Statement of Conditions The information contained in this manual is subject to change without notice.
  • Page 4 OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE OR USE OF ITS PRODUCTS. (c) ALVARION SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY PURCHASER’S OR ANY THIRD PERSON'S...

  • Page 5: Limitation Of Liability

    Important Notice Limitation of Liability (a) ALVARION SHALL NOT BE LIABLE TO THE PURCHASER OR TO ANY THIRD PARTY, FOR ANY LOSS OF PROFITS, LOSS OF USE, INTERRUPTION OF BUSINESS OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL DAMAGES OF ANY KIND, WHETHER ARISING UNDER...

  • Page 6: Fcc Radiation Exposure Statement

    BreezeNET DS.11 Series User Manual • Consult the dealer or an experienced radio/TV technician for help Changes or modifications to this equipment not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC Radiation Exposure Statement To comply with FCC RF exposure requirements in section 1.1307, a minimum separation distance of 2 m (79 inches) is required between the antenna and all...

  • Page 7: Important Notice

    It could also void the user’s authority to operate the equipment. ♦ Some of the equipment provided by Alvarion and specified in this manual, is manufactured and warranted by third parties. All such equipment must be...
  • Page 8 Support Should you need assistance beyond the scope of this manual, please contact your local Alvarion reseller or distributor. If they cannot solve your problem, feel free to contact the Alvarion Technical Support Department. The support representative can assist you in solving any problems that cannot be solved by your reseller.

  • Page 9: Table Of Contents

    Table of Contents User Manual Table of Contents Introduction Scope of the Manual System Description Functional Description BreezeNET DS.11 Compatibility and Standards Installation Packing List Additional Installation Requirements Installation Overview Outdoor Installation Considerations Collocating DS.11 Outdoor Units Site Selection Factors Rooftop Installation Antennas for Outdoor Applications Antenna Polarization...
  • Page 10 BreezeNET DS.11 Series User Manual What to do if the Self Test Fails 2-16 The DS.11 Configuration Utility Installing and Accessing the Configuration Utility Configuration Utility Modes Unit Configuration Mode Firmware Upgrade Mode 3-28 Multiple Unit Configuration Mode 3-30 Resetting the SNMP Community Strings 3-31 Reloading Factory Default Settings 3-31...
  • Page 11 Table of Contents Table of Figures Figure 1-1: BreezeNET DS.11 Point-to-Multipoint Application Figure 2-1: General Installation Scheme - Pole Mounting Figure 2-2: Installation Holes/Grooves Figure 2-3: 3” Pole Mounting Installation Using the Supplied Brackets 2-10 Figure 2-4: Outdoor Unit Bottom Panel (shown without the service box) 2-11 Figure 2-5: The Waterproof Service Box 2-12...
  • Page 12 BreezeNET DS.11 Series User Manual Table of Tables Table 2-1: Available Antennas .....................2-7 Table 2-2: Indoor Unit LEDs....................2-15 Table 2-3: Outdoor Unit LEDs ...................2-16 Table 3-1: Regulatory Domains Specifications ..............3-16 Table 3-2: Frequency List ....................3-16...

  • Page 13: Introduction

    Introduction Chapter 1 About This Chapter This chapter is comprised of the following sections: ♦ Scope of the Manual, page 1-2, describes the chapters and topics comprising the BreezeNET DS.11 Series User Manual. ♦ System Description, page 1-3, provides an overview of the DS.11 system and introduces the system components.

  • Page 14: Scope Of The Manual

    BreezeNET DS.11 Series User Manual Scope of the Manual This manual provides instructions for planning and setting up a wireless link based on the BreezeNET DS.11 wireless Base Unit and Remote Bridge. ♦ Chapter 1: Introduction - Describes how to use this manual and presents the BreezeNET DS.11 series.

  • Page 15: System Description

    Introduction System Description The BreezeNET DS.11 wireless Base Unit (BU-DS.11) and Remote Bridge (RB- DS.11) are designed to provide long-range point-to-multipoint links for outdoor applications. The products use direct sequence spread spectrum radio technology operating at the frequency range of 2.4 – 2.4835 GHz, a part of the FCC's unlicensed Industrial, Scientific and Medical (ISM) band.

  • Page 16: Breezenet Ds.11 Compatibility And Standards

    BreezeNET DS.11 Series User Manual RB-DS.11 Wireless Bridge The RB-DS.11 Wireless Bridge connects a remote Ethernet network to a central network server or Internet site via a BU-DS.11 Multipoint Base Unit. The maximum number of MAC addresses that the unit can handle at any specific time is 1024 and the Aging algorithm is applied at all times.

  • Page 17: Installation

    Installation Chapter 2 About This Chapter This chapter is comprised of the following sections: ♦ Packing List, page 2-2, describes the components included with the BreezeNET DS.11 series installation kit. ♦ Additional Installation Requirements, page 2-2, describes the additional standard tools and materials required for installation. ♦...

  • Page 18: Packing List

    ♦ Ethernet cable (straight for connecting to a hub). ♦ Installation tools and materials, including appropriate means (e.g. a pole) for installing the outdoor unit. ♦ Crimping tool for RJ-45 connectors. Items marked with an asterisk (*) are available as options from Alvarion.

  • Page 19: Installation Overview

    Installation Installation Overview The following outlines the steps of the installation procedure. Select appropriate locations for the outdoor unit, the antenna (if using an external antenna) and the indoor unit. Mount the outdoor unit. If using an external antenna mount the antenna and connect it to the outdoor unit.

  • Page 20: Figure 2-1: General Installation Scheme - Pole Mounting

    BreezeNET DS.11 Series User Manual Figure 2-1: General Installation Scheme - Pole Mounting NOTE: Use a straight Ethernet cable to connect the indoor unit to a hub, or use a crossed cable to connect it directly to a PC’s Network Interface Card (NIC).

  • Page 21: Outdoor Installation Considerations

    Installation Outdoor Installation Considerations This section describes various considerations to take into account when planning an outdoor installation including site selection, antenna alignment, antenna polarization, antenna seal, and cell size. Collocating DS.11 Outdoor Units Up to three BU-DS.11 units with omni-directional antennas (the exact number depends on the number of non-overlapping channels available in the relevant regulatory domain) can be collocated on the same building top or tower.

  • Page 22: Rooftop Installation

    BreezeNET DS.11 Series User Manual Path Loss Path loss is determined mainly by several factors: ♦ Distance Between Sites: Path loss is lower and system performance is better when distances between sites are shorter. ♦ Clearance: Path loss is minimized when there is a clear line of sight. The number, location, size, and makeup of obstacles determine their contribution to path loss.

  • Page 23: Antenna Seal

    Using Outdoor Range Tables Specific range tables, guidelines and information about extended cables can be obtained from your local dealer or the Alvarion central offices. Outdoor installations must have a clear line-of-sight between antennas. Large obstacles such as buildings or hills can prevent the establishment of a link while smaller obstacles such as trees or vehicles traffic can reduce range.

  • Page 24: Precautions

    Failure to do so may void the BreezeNET Product Warranty and may expose the end user to legal and financial liabilities. Alvarion and its resellers or distributors are not liable for injury, damage or violation of government regulations associated with the installation of external antennas.

  • Page 25: Installing The Outdoor Unit

    Installation Installing the Outdoor Unit The outdoor unit can be secured to the pole using one of the following options: ♦ Special brackets sets (supplied with each unit). There are two pairs of threaded holes on the units, allowing the use of the brackets with various pole widths. ♦...

  • Page 26: Figure 2-3: 3" Pole Mounting Installation Using The Supplied Brackets

    BreezeNET DS.11 Series User Manual 2-10 Figure 2-3: 3” Pole Mounting Installation Using the Supplied Brackets NOTE: When inserting the open-ended bolts, make sure to insert them with the grooves pointing outwards; these grooves are intended to allow fastening of the bolts with a screwdriver.

  • Page 27: Connecting The Ground And Antenna Cables

    The following steps and figure illustrate how to connect the indoor-to-outdoor cable. The cable is supplied by Alvarion with an RJ-45 on the outdoor end, with the other end open to facilitate easy routing through holes to the location intended for the indoor unit.

  • Page 28: Figure 2-5: The Waterproof Service Box

    BreezeNET DS.11 Series User Manual 2-12 Figure 2-5: The Waterproof Service Box Place the O-ring of the service box in its intended location. Connect the Ethernet cable to the outdoor unit’s RJ-45 connector. Attach the service box to the outdoor unit and then tighten the top nut. Make sure that the O-ring is in its intended location to verify proper sealing.

  • Page 29: Installing The Indoor Unit

    Installation 2-13 Installing the Indoor Unit Route the indoor-to-outdoor cable into the building so that it conveniently reaches the indoor unit while avoiding interference sources. It is recommended that the cable be a little longer then necessary. The cable is supplied open ended so it can be conveniently threaded as shown into the building.

  • Page 30: Configuring Parameters

    BreezeNET DS.11 Series User Manual 2-14 Connect the 10BaseT ETHERNET connector (marked ), to the network. The cable connection should be straight Ethernet if connecting the indoor unit to a Hub and a crossed cable if connecting it directly to a PC Network Interface Card (NIC).

  • Page 31: Verifying Correct Operation

    Installation 2-15 Verifying Correct Operation The following sections describe how to ensure that the units are correctly installed and functioning properly. Verifying Correct Operation of the Indoor Unit To verify proper operation, check the LED indicators located on the top panel of the indoor unit as shown in Figure 2-6 on page 2-13, and as described in Table 2-2.

  • Page 32: What To Do If The Self Test Fails

    BreezeNET DS.11 Series User Manual 2-16 Name Description Functionality Ethernet activity/ OFF –Ethernet connectivity is OK. connectivity indication No traffic activity detected on the port. Blinking Green –Ethernet connectivity is OK, with traffic on the port. Red – No Ethernet connectivity. When this state occurs, check the Ethernet cable and indoor-to-outdoor cable connections.

  • Page 33: The Ds.11 Configuration Utility

    WBS, WBC, AP-DS.11 and SA-DS.11. The description in this manual, however, is limited to management and configuration of BU-DS.11 and RB-DS.11 units. Refer to the DS.11 section of www.alvarion.com for more information on how to use the utility with other products.

  • Page 34: Installing And Accessing The Configuration Utility

    BreezeNET DS.11 Series User Manual Installing and Accessing the Configuration Utility The Configuration Utility is provided for installation on a 3.5” diskette. Insert the provided diskette into the computer where you wish to install the Configuration Utility. Run DS11mgr.exe. Follow all instructions until you are informed that the Utility was installed successfully.

  • Page 35: Unit Configuration Mode

    The DS.11 Configuration Utility Unit Configuration Mode The following sections describe the various screens, controls and parameters available in Unit Configuration mode. Control Window In this section, you can: ♦ Discover the units that are connected to the network. ♦ View the DS.11 units that have been discovered by their IP address. ♦...

  • Page 36: Figure 3-2: The Set Ip Dialog Box

    BreezeNET DS.11 Series User Manual Control Window The following sections describe how to work with the Control Window. Selecting Units You can select a unit to manage in one of the following ways: ♦ Click the Network Autodiscovery button. All the IP addresses of units in the same domain but not hidden behind a router (under the selected community) are displayed in the list box underneath the button.

  • Page 37: Figure 3-3: Station Status Tab (Bu-Ds.11)

    The DS.11 Configuration Utility NOTE: In order to see the unit after assigning the IP address, the PC with the Configuration utility should be on the same IP subnet as the assigned IP address. Units receive auto IP address if there is no DHCP server and the unit is configured to work in the Smart mode.

  • Page 38: Figure 3-4: Networking Parameters Tab (Bu)

    BreezeNET DS.11 Series User Manual ♦ Location: A user-defined description of the location of the selected unit, up to 28 ASCII characters long (optional). ♦ MAC Address: MAC address of the selected unit. ♦ Firmware: The current firmware version. ♦ BSS Address (RB-DS.11 units only): Defines the MAC address of the BSS, which is the BU-DS.11 the unit is associated with.

  • Page 39: Vlan Support

    The DS.11 Configuration Utility DHCP ♦ Use DHCP: Sets the way your system utilizes the Dynamic Host Configuration Protocol (DHCP, used for automatic IP assignment). Always: The system searches for a DHCP server each time the unit is turned on. Smart: The system searches for a DHCP server only if no IP address was assigned.
  • Page 40 BreezeNET DS.11 Series User Manual A VLAN Management Tag is inserted in all management frames generated by the unit before transmission to either the Ethernet or wireless link port. The tag includes the values of the VLAN ID Management and the VLAN Priority Management parameters.

  • Page 41: Figure 3-5: Networking Parameters Tab (Bu)

    The DS.11 Configuration Utility Networking Parameters-CPE Table Tab (BU only) Figure 3-5: Networking Parameters Tab (BU) The CPE Table tab enables defining the VLAN functionality for data frames for each of the RBs associated with the BU. The VLAN functionality of associated RBs that are not defined in the CPE Table is defined by the VLAN ID Access and VLAN Priority Access parameters in the General tab.
  • Page 42 BreezeNET DS.11 Series User Manual 3-10 ♦ Filtering/Forwarding packets received on the BU’s Ethernet port: The unit accepts from the Ethernet port only data frames with a destination on the Wireless port side (an associated RB). If the destination RB is configured as Hybrid port (VLAN ID = 65535), both tagged and untagged data packets will be forwarded to the RB without any change.

  • Page 43: Figure 3-6: Snmp Parameters Tab

    The DS.11 Configuration Utility 3-11 SNMP Parameters Tab The SNMP parameters tab allows you to define or edit the SNMP community strings and the SNMP-related parameters. Figure 3-6: SNMP Parameters Tab The SNMP Parameters tab is comprised of the following components: ♦...

  • Page 44: Figure 3-7: Counters Tab (Bu Units)

    BreezeNET DS.11 Series User Manual 3-12 Counters Tab The Counters tab displays a series of statistics related to usage and performance. Figure 3-7: Counters Tab (BU Units) Using the Counters tabs, you can view a wide range of performance data at both sides of the link.
  • Page 45 The DS.11 Configuration Utility 3-13 Failed Count: This counter is incremented when a packet is not transmitted successfully due to the number of transmit attempts exceeding either the Short Retry Limit or Long Retry Limit. ♦ Rx Counters Rx Fragments: The number of frames received, including duplicate data frames.

  • Page 46: Figure 3-8: Wlan Parameters Tab (Bu Units)

    BreezeNET DS.11 Series User Manual 3-14 WLAN Parameters Tab The WLAN parameters tab allows you to define or edit parameters related to the Wireless LAN environment in which the selected unit is operating. The window displayed varies depending on the type of unit selected. Figure 3-8: WLAN Parameters Tab (BU Units) Figure 3-9: WLAN Parameters Tab (RB Units) The WLAN Parameters tab is comprised of the following components:...
  • Page 47 The DS.11 Configuration Utility 3-15 ♦ ESSID: An ASCII string of up to 32 characters used to identify a WLAN and prevents the unintentional merging of two overlapping WLANs. It is essential that the ESSID is set to the same value in all Remote Bridges and Base Units that are meant to communicate with each other.

  • Page 48: Table 3-1: Regulatory Domains Specifications

    BreezeNET DS.11 Series User Manual 3-16 Table 3-1 describes the channels used in each regulatory domain, the default channel, the maximum output power and the default output power. Regulatory Lowest Highest Default Max. Output Default Output Domain Channel Channel Channel Power (dBm) Power (dBm) ETSI...

  • Page 49: Figure 3-10: The Station Control Tab

    The DS.11 Configuration Utility 3-17 Station Control Tab The Station Control tab enables you to revert the unit parameters to their factory defaults, reset the unit and export the unit’s configuration to a configuration file. Figure 3-10: The Station Control Tab The Station Control tab is comprised of the following components: ♦...

  • Page 50: Figure 3-11: Encryption Tab

    BreezeNET DS.11 Series User Manual 3-18 Security Tab The Security tab enables you to define the encryption parameters. In the BU, an additional ACL (Access Control List) Table tab enables to define stations that are allowed to associate with the BU. Encryption Tab Figure 3-11: Encryption Tab This tab displays information regarding the unit’s security configuration.
  • Page 51 The DS.11 Configuration Utility 3-19 If you select the Shared Key algorithm, set the following parameters: ♦ WEP: Enable access to the Default Key ID parameter and WEP keys table. The default is Disable. ♦ Default Key ID – Sets the key to be used for encryption/decryption. The default WEP key is the first key.

  • Page 52: Figure 3-12: Acl Table Tab

    BreezeNET DS.11 Series User Manual 3-20 ACL Table Tab (BU only) Figure 3-12: ACL Table Tab The Access Control List table is used to authorize/deny access to certain stations. The list can contain up to 128 MAC addresses. ♦ To Add a MAC Address to the list – Type the MAC address in the Add/Delete MAC Address edit box.

  • Page 53: Figure 3-13: Advanced Tab

    The DS.11 Configuration Utility 3-21 Advanced Tab The Advanced tab provides additional performance parameters. Figure 3-13: Advanced Tab The Advanced tab is comprised of the following components: ♦ CW Min/Max: The size of the Contention Window. The contention window back-off algorithm is a method used to resolve contention between different stations trying to access the medium.
  • Page 54 BreezeNET DS.11 Series User Manual 3-22 ♦ Basic Rate: The maximum rate of multicast, broadcast and control frames transmissions. Multicast and broadcast transmissions are not acknowledged; therefore there is a chance that such transmissions will not be properly received without the possibility of using the acknowledgement mechanism for retransmission.

  • Page 55: Figure 3-14: General Parameters Tab (Bu)

    The DS.11 Configuration Utility 3-23 General Parameters Tab The General Parameters tab provides various bridging and association parameters. Figure 3-14: General Parameters Tab (BU) Figure 3-15: General Parameters Tab (RB) ♦ Ethernet Back Off: Disabling the Ethernet back-off algorithm may improve performance under certain conditions, such as when there is high traffic on the Ethernet LAN.
  • Page 56 BreezeNET DS.11 Series User Manual 3-24 ♦ Bridging Mode: Control the flow of packets that are sent to unknown addresses. Wireless: Select Reject Unknown to allow forwarding to the Ethernet port of frames received on the wireless port only if the destination address is known to the unit.
  • Page 57 The DS.11 Configuration Utility 3-25 ♦ Preferred BU (RB only) Parameters: When the Enforce option is enabled, the RB will associate only with the BU whose MAC address is defined in the MAC Address edit box. The default for the Enforce option is Disable. The default Preferred BU MAC Address is 00-00-00-00-00-00 (none).

  • Page 58: Figure 3-16: Auto-Config Tab

    BreezeNET DS.11 Series User Manual 3-26 Send Trap Interval (sec): The time interval between two successive traps when the number of transmitted broadcasts/multicasts exceeds the permitted threshold. The range is from 0 to 65535 seconds. 0 is for disabling traps sending. The default is 300 seconds.

  • Page 59: Figure 3-17: Trap Monitor Tab

    The DS.11 Configuration Utility 3-27 ♦ Set Compatibility Mode: Click to set the following parameters, which are unique to DS.11 version 4.0, to values that will ensure interoperability with DS.11 units running previous versions as well as with other IEEE 802.11 compliant devices: Basic rate=2Mbps Short preamble = Disable (BU)

  • Page 60: Firmware Upgrade Mode

    BreezeNET DS.11 Series User Manual 3-28 Firmware Upgrade Mode This mode enables the embedded software in managed units to be upgraded. When you select this mode from the Options menu, the following window is displayed. Figure 3-18: Firmware Upgrade Mode dialog box NOTE: The Configuration utility does not resolve the topology of the cell.

  • Page 61: Figure 3-19: Firmware Upgrade Process

    The DS.11 Configuration Utility 3-29 At the end of the upgrade session, the following window is displayed indicating that the operation was successful. Figure 3-19: Firmware Upgrade Process NOTES: Do not disconnect any cables or try to stop the process before downloading is completed. All configured parameters are saved during the upgrade/download procedure.

  • Page 62: Multiple Unit Configuration Mode

    BreezeNET DS.11 Series User Manual 3-30 ♦ Session Retries: Defines the number of times a TFTP session will be repeated before the firmware upgrade operation is designated a failure. The range is 1-5 retries with a default of 3 retries. Multiple Unit Configuration Mode This feature enables configuration parameters to be downloaded to multiple units simultaneously.

  • Page 63: Resetting The Snmp Community Strings

    The DS.11 Configuration Utility 3-31 Resetting the SNMP Community Strings The SNMP Read/Write Community strings serve as an SNMP security feature to restrict management access to authorized persons only. To reset the SNMP community strings, insert a paper clip or another suitable tool into the Reset button on the top panel of the unit and press the button it for than one second at least (see Figure 2-6 on page 2-13) while the unit is operating.

  • Page 65: Configuration Guidelines

    Configuration Guidelines Chapter 4 About This Chapter This section provides guidelines regarding configuration of parameters that are important for ensuring optimal performance under various conditions.

  • Page 66: Configuring Critical Parameters

    BreezeNET DS.11 Series User Manual Configuring Critical Parameters One-Click Configuration To facilitate fast configuration and avoid mistakes, optimization of several operation modes can be ensured by configuring predefined values of several parameters using the button in the Auto-Config tab. These modes are: ♦...

  • Page 67: Rts Threshold

    Configuration Guidelines ♦ Setting the CW min to 15 will improve performance for links with uni-directional traffic patterns. ♦ CW min of 31 will minimize the PER for heavy bi-directional traffic loads. ♦ CW Min of 63 should be used for long-range multi-point links with more than 3 RBs.
  • Page 68 BreezeNET DS.11 Series User Manual...

  • Page 69: System Troubleshooting

    BreezeNET DS.11. If problems not mentioned in this guide should arise, checking the Ethernet and WLAN counters may help. If the problem persists, please feel free to contact your local distributor or the Alvarion Technical Support Department.

  • Page 70: Troubleshooting Guide

    BreezeNET DS.11 Series User Manual Troubleshooting Guide Problem and Possible Cause Corrective Action Indication No power to unit. Power cord is not Verify power cord is properly connected to the BreezeNET unit Power LED is off. properly connected. and to the power outlet. Failure to 1.

  • Page 71: Technical Specifications

    Technical Specifications Chapter 6 Supported Standards ♦ Compliant with ETS 300 328 and ETS 300 826 (CE marked). ♦ IEEE 802.11b HR standard for Wireless LAN at 11 and 5.5 Mbps. ♦ IEEE 802.11b standard for 1 and 2 Mbps. Configuration and Management SNMP based Configuration Utility Management and...
  • Page 72 BreezeNET DS.11 Series User Manual Radio 2.4 - 2.4835 GHz Frequency Range Direct Sequence Spread Spectrum (DSSS) Radio Type Compliant with IEEE 802.11b HR Wireless LAN Standards FCC : 1-11 ETSI : 1-13 Selectable sub Channels Japan TELEC : 1-13 France : 10-13 FCC:...

  • Page 73: Mechanical Dimensions

    Technical Specifications Outdoor Unit-to-Indoor Unit Communication Cat 5 FTP 4x2x24 Double Jacket Cable Type 100 m (including the length of the Ethernet cable to the user equipment) Maximum Cable length Interfaces N-Type jack, lightning protected RF (antenna) connector in the outdoor unit (DS.11D models) Outdoor units: Shielded RJ-45 with special water proof sealed cap Baseband...
  • Page 74 BreezeNET DS.11 Series User Manual...

  • Page 75: Ds.11 Faq

    DS.11 FAQ Appendix A This appendix provides answers to the most commonly asked questions concerning the DS.11 system. The appendix is divided into the following categories: ♦ General, page A-2. ♦ Collocation, page A-4. ♦ Firmware, page A-5. ♦ Configuration, page A-6. ♦...

  • Page 76: General

    BreezeNET DS.11 Series Use Manual General Can the BU-DS.11/RB-DS.11D indoor unit be placed outdoors? It is not recommended. The BU-DS.11/RB-DS.11 indoor units are specified to operate between 0°C and 40°C and is not weather protected. Therefore, if it is necessary to install it outdoors, it should be placed in a protective cabinet. Do DS.11 units support 802.1Q VLAN? The DS.11 passes VLAN packets transparently within a VLAN network without taking any action on 802.1Q frames.
  • Page 77 DS.11 FAQ What is the normal PER (Packet Error Rate) for the BU-DS.11/RB-DS.11? The error rate will be about 4%-6% (transmitted fragments vs. retry count). This is typical when operating in a non-interference environment at maximum range for bi- directional traffic loads. If the traffic load is more uni-directional, then the PER will be lower.

  • Page 78: Collocation And Interference

    BreezeNET DS.11 Series Use Manual Collocation and Interference How many BU-DS.11 or RB-DS.11 units can be collocated on the same building or tower? Up to 3 BU-DS.11 or RB-DS.11 units can be collocate on the same structure. Each unit is assigned to one of three non-overlapping channel (e.g. channels 1, 6, and 11 in FCC compliant installations).

  • Page 79: Firmware

    DS.11 FAQ Firmware Can the BU-DS.11/RB-DS.11 firmware be upgraded? The firmware in the BU-DS.11/RB-DS.11 is stored in flash and can be upgraded using the built in Configuration Utility or the TFTP server. Can the BU-DS.11/RB-DS.11 flash be erased or the firmware changed by an unauthorized person? The flash is protected against unauthorized access.

  • Page 80: Configuration

    BreezeNET DS.11 Series Use Manual Configuration Can the regulatory domain (country) of a DS.11 unit be changed? The regulatory domain is factory set and cannot be changed. How can the DS.11 be configured or managed if the SNMP Community name has been forgotten? Press the reset button on the top panel with a paper clip.

  • Page 81: Accessories

    DS.11 FAQ Accessories Can I use the same accessories on my BreezeNET DS.11 as on my BreezeNET PRO.11? Not all BreezeNET PRO.11 accessories are compatible with the DS.11. For example, the TPA (Transmit Power Amplifier), LNA (Low Noise Receive Amplifier) and AMP 250/500 (Bi-Directional Amplifier), which are all compatible with the BreezeNET PRO.11, cannot be used with the DS.11.

  • Page 82: Management

    BreezeNET DS.11 Series Use Manual Management What management options are available for the DS.11? The BU-DS.11/RB-DS.11D comes with a graphical Configuration Utility that operates on any Windows based network ready PC. With this utility you can configure and monitor every DS.11 on your network. You can also use the DS.11 SNMP MIB on standard management platforms like SNMPc, and HP Openview.

  • Page 83: Preparing The Indoor To Outdoor Cable

    1 2 3 4 5 6 7 8 4 + 5 1 + 2 7 + 8 3 + 6 Ethernet Connector Pin Assignments The color codes used in cables supplied by Alvarion are: Wire color Blue Blue/white Orange Orange/white...
  • Page 84 BreezeNET DS.11 Series User Manual...

  • Page 85: Radio Signal Propagation

    Radio Signal Propagation Appendix C This section explains and simplifies many of the terms relating to antennas and RF (Radio Frequency) systems. The following diagram depicts a typical radio system: Figure C-1: A Typical Radio System A radio system transmits information to the transmitter. The information is transmitted through an antenna that converts the RF signal into an electromagnetic wave.
  • Page 86 BreezeNET DS.11 Series User Manual = 10 x Log P For example: 1 Watt = 1000 mW; P = 10 x Log 1000 = 30 dBm 100 mW; P = 10 x Log 100 = 20 dBm For link budget calculations, the dBm convention is more convenient than the Watts convention.

  • Page 87: Antenna Characteristics

    Radio Signal Propagation Antenna Characteristics Isotropic Antenna A hypothetical antenna having equal radiation intensity in all directions. Used as a zero dB gain reference in directivity calculation (gain). Antenna Gain A measure of directivity. It is defined as the ratio of the radiation intensity in a given direction to the radiation intensity that would be obtained if the power accepted by the antenna was radiated equally in all directions (isotropically).

  • Page 88: Receiver Sensitivity

    BreezeNET DS.11 Series User Manual 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 C-5: Radiation Pattern of Directional Antenna Antenna Beamwidth The directiveness of a directional antenna.
  • Page 89 Radio Signal Propagation Link Parameters Frequency: 2.4 GHz = 4 dBm (2.5 mW) Tx and Rx cable length (Ct and Cr) = 10 m. cable type RG214 (0.6 dB/meter) Tx and Rx antenna gain (Gt and Gr) = 18 dBi Distance between sites = 3 Km Receiver sensitivity (Ps) = -84 dBm Link Budget Calculation...
  • Page 90 BreezeNET DS.11 Series User Manual ♦ Distance ♦ Weather conditions (rain, wind, etc.) At high rain intensity (150 mm/hr), the fading of an RF signal at 2.4 GHz may reach a maximum of 0.02 dB/Km. Wind may cause fading due to antenna motion. ♦...
  • Page 91 Radio Signal Propagation Figure C-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.
  • Page 92 BreezeNET DS.11 Series User Manual...

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