BreezeNET DS.11 Series BU-DS.11 RB-DS.11 User’s Guide December 2003 SW Version 4.1 Cat No.
ii BreezeNET DS.
Important Notice iii © 2003 by Alvarion Ltd. (“alvarion”). All rights reserved. No part of this publication may be reproduced in any material form without the written permission of the copyright owner.
BreezeNET DS.11 Series User’s Guide iv Disclaimer (a) UNITS OF PRODUCT (INCLUDING ALL THE SOFTWARE) DELIVERED TO PURCHASER HEREUNDER ARE NOT FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR RESALE IN APPLICATIONS WHERE THE FAILURE, MALFUNCTION OR INACCURACY OF PRODUCTS CARRIES A RISK OF DEATH OR BODILY INJURY OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE (“HIGH RISK ACTIVITIES”).
Important Notice v 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 BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE AND WHETHER BASED ON THIS AGREEMENT OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
BreezeNET DS.11 Series User’s Guide vi • 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 persons.
Important Notice vii Important Notice This installation guide is applicable to BreezeNET DS.11 units and is delivered subject to the following conditions and restrictions: ♦ This manual contains proprietary information belonging to Alvarion. Such information is supplied solely for the purpose of assisting explicitly and properly authorized users of BreezeNET DS.11equipment.
BreezeNET DS.11 Series User’s Guide viii Contacting Alvarion Technical 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.
Table of Contents ix User’s Guide Table of Contents Introduction 1-1 Scope of the Guide 1-2 System Description 1-3 Functional Description 1-3 BreezeNET DS.11 Compatibility and Standards 1-4 Installation 2-1 Packing List 2-2 Additional Installation Requirements 2-2 Installation Overview 2-3 Outdoor Installation Considerations 2-5 Collocating DS.
BreezeNET DS.11 Series User’s Guide x What to do if the Self Test Fails The DS.
Table of Contents xi Table of Figures Figure 1-1: BreezeNET DS.11 Point-to-Multipoint Application 1-3 Figure 2-1: General Installation Scheme - Pole Mounting 2-4 Figure 2-2: Installation Holes/Grooves 2-9 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 Figure 2-6: Indoor Unit Top Panel 2-13 Figure 3-1: DS.
xii BreezeNET DS.11 Series User’s Guide 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 ..............................
Introduction 1-1 Chapter 1 - Introduction About This Chapter This chapter is comprised of the following sections: ♦ Scope of the Guide, page 1-2, describes the chapters and topics comprising the BreezeNET DS.11 Series User’s Guide. ♦ System Description, page 1-3, provides an overview of the DS.11 system and introduces the system components.
BreezeNET DS.11 Series User’s Guide 1-2 Scope of the Guide This User's 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. ♦ Chapter 2: Installation - Describes how to install the BreezeNET DS.11 units. ♦ Chapter 3: The DS.11 Configuration Utility - Describes how to use the DS.
Introduction 1-3 System Description The BreezeNET DS.11 wireless Base Unit (BU-DS.11) and Remote Bridge (RBDS.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. Data is transmitted at rates of up to 11 Mbps, providing network users with full 10BaseT Ethernet speeds.
BreezeNET DS.11 Series User’s Guide 1-4 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. When a station on the Ethernet LAN sends a message that is not destined for a local station, the RB-DS.11 forwards the message to the BU-DS.11. When the BU-DS.
Installation 2-1 Chapter 2 - Installation 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. ♦ Installation Overview, page 2-3, provides an overview of the installation procedures.
BreezeNET DS.11 Series User’s Guide 2-2 Packing List Ensure that all of the following items are included with the unit’s installation kit: ♦ Indoor unit. ♦ Outdoor unit (includes integrated antenna or antenna connector for optional connection to external antenna). ♦ Pole mounting kit for the outdoor unit (includes two brackets and four sets of bolts, nuts and washers). ♦ 110/220 VAC Power Cord. ♦ Indoor-to-outdoor cable kit. ♦ Configuration Utility diskette.
Installation 2-3 Installation Overview The following outlines the steps of the installation procedure. 1. Select appropriate locations for the outdoor unit, the antenna (if using an external antenna) and the indoor unit. 2. Mount the outdoor unit. If using an external antenna mount the antenna and connect it to the outdoor unit. 3. Connect a ground cable from the outdoor unit to an appropriate grounding point. 4.
BreezeNET DS.11 Series User’s Guide 2-4 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).
Installation 2-5 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.
BreezeNET DS.11 Series User’s Guide 2-6 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. ♦ Antenna Height: Path loss is lower when antennas are positioned higher.
Installation 2-7 Antenna Seal When using outdoor antennas, you must seal all cable connections to prevent water or dirt from entering the connector. Cell Size/Link Distance Cell size is determined by the maximum possible distance between the BU-DS.11 and a RB-DS.11 unit. For open outdoor areas with an unobstructed line of sight between the BU-DS.11 and the RB-DS.
BreezeNET DS.11 Series User’s Guide 2-8 Precautions Outdoor units and antennas 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 2-9 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. ♦ Metal bands (9/16” wide, minimum 12” long). Figure 2-2 shows the locations of the holes and grooves on the back of the unit.
BreezeNET DS.11 Series User’s Guide 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.
Installation 2-11 Connecting the Ground and Antenna Cables The Ground terminal (marked ) is located on the bottom panel of the outdoor unit. In DS.11D units the antenna’s RF connector (marked ) is located on the top panel of the outdoor unit. Figure 2-4: Outdoor Unit Bottom Panel (shown without the service box) 1. Connect one end of the grounding cable to the Ground terminal and connect the other end to a good ground connection. 2. For DS.
2-12 BreezeNET DS.11 Series User’s Guide Figure 2-5: The Waterproof Service Box 1. Place the O-ring of the service box in its intended location. 2. Connect the Ethernet cable to the outdoor unit’s RJ-45 connector. 3. 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. 4. Route the cable to the location selected for the indoor unit. 5.
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. 1. The unit can be placed on a desktop or a shelf. Alternatively, it may be wallmounted.
BreezeNET DS.11 Series User’s Guide 2-14 6. 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). NOTE: The length of the Ethernet cable connecting the indoor unit to the user's equipment, together with the length of the indoor-to-outdoor cable, should not exceed 100 meters.
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. Name Description Functionality POWER Power indication Orange - 48VDC is present on the Radio RJ45 port.
BreezeNET DS.11 Series User’s Guide 2-16 Name Description Functionality ETH Ethernet activity/ connectivity indication OFF –Ethernet connectivity is OK. 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. RSSI/Load BAR RB-DS.11: Received Signal Strength Indication BU-DS.11: Number of associated RB-DS.
The DS.11 Configuration Utility 3-1 Chapter 3 - The DS.11 Configuration Utility About This Chapter The DS.11 Configuration Utility is an SNMP-based utility that provides a consistent view of the wireless network. The system administrator can use the DS.11 Configuration Utility to control a large number of DS.11 units from a single location. The Configuration Utility can be used to manage BU-DS.11 and RB-DS.11 units as well as other members of the BreezeNET DS.11 family including the WBS, WBC, AP-DS.
BreezeNET DS.11 Series User’s Guide 3-2 Installing and Accessing the Configuration Utility The Configuration Utility is provided for installation on a 3.5” diskette. 1. Insert the provided diskette into the computer where you wish to install the Configuration Utility. 2. Run DS11mgr.exe. 3. Follow all instructions until you are informed that the Utility was installed successfully. 4. Run the Configuration Utility from the Start menu by selecting it in the DS.
The DS.11 Configuration Utility 3-3 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. ♦ Select the units you wish to manage.
BreezeNET DS.11 Series User’s Guide 3-4 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. Click on an address to select the corresponding unit for viewing and configuration.
The DS.11 Configuration Utility 3-5 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. The IP address will be chosen randomly in the 169.254.x.x range with a subnet mask of 255.255.0.0.
BreezeNET DS.11 Series User’s Guide 3-6 ♦ 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. ♦ Associated Stations (BU-DS.11 units only): Details concerning the RB-DS.11 units associated with the BU-DS.11.
The DS.11 Configuration Utility 3-7 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. If an IP address was assigned manually, the system will not search for a DHCP server. Never: The system never searches for a DHCP server. The default value is Smart.
BreezeNET DS.11 Series User’s Guide 3-8 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. Operation with Management VLAN disabled (VLAN ID Management is 65535)): The unit accepts only untagged management frames received on either the Ethernet or wireless link ports.
The DS.11 Configuration Utility 3-9 Operation with Access VLAN enabled (VLAN ID Access is 1-4094): The unit accepts from the Ethernet port only tagged data frames with a matching VLAN ID. The VLAN tag is removed. All other frames (with a nonmatching VLAN ID or with no VLAN tag) are not accepted. The unit does not accept tagged frames from the wireless port. A VLAN ID tag is inserted in all untagged data frames received from the wireless link before forwarding them to the Ethernet port.
BreezeNET DS.11 Series User’s Guide 3-10 SNMP Parameters Tab The SNMP parameters tab allows you to define or edit the SNMP community strings and the SNMP-related parameters. Figure 3-5: SNMP Parameters Tab The SNMP Parameters tab is comprised of the following components: ♦ Read: The read-only community string of the unit. Default is public. ♦ Read/Write: The read/write community string of the unit. Default is private. This value is displayed as asterisks for security purposes.
The DS.11 Configuration Utility 3-11 Counters Tab The Counters tab displays a series of statistics related to usage and performance. Figure 3-6: Counters Tab (BU Units) Using the Counters tabs, you can view a wide range of performance data at both sides of the link. For RB units, you can monitor the received signal strength through the RSSI (Received Signal Strength Indication) bar indicator at the bottom of the window. This RSSI bar can be used to optimize antenna alignment and improve link quality.
BreezeNET DS.11 Series User’s Guide 3-12 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. Multicast Rx Frames: The number of received multicast frames. FCS Error: The number of frames received with a CRC error.
The DS.11 Configuration Utility 3-13 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.
BreezeNET DS.11 Series User’s Guide 3-14 ♦ 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. The ESSID field is casesensitive. ♦ Maximum data rate: By default, the unit adaptively selects the highest possible rate for transmission.
The DS.11 Configuration Utility 3-15 Table 3-1 describes the channels used in each regulatory domain, the default channel, the maximum output power and the default output power. Regulatory Domain Lowest Channel Highest Channel Default Channel Max.
BreezeNET DS.11 Series User’s Guide 3-16 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 3-9: The Station Control Tab The Station Control tab is comprised of the following components: ♦ ♦ Station Control: Click the factory defaults.
The DS.11 Configuration Utility 3-17 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 3-10: Encryption Tab This tab displays information regarding the unit’s security configuration.
BreezeNET DS.11 Series User’s Guide 3-18 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. ♦ WEP keys – Defines the encryption keys used.
The DS.11 Configuration Utility 3-19 ACL Table Tab (BU only) Figure 3-11: 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. The format should be XX-XX-XX-XX-XX-XX.
BreezeNET DS.11 Series User’s Guide 3-20 Advanced Tab The Advanced tab provides additional performance parameters. Figure 3-12: 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. The valid range is from 7 to 1023. Defaults are 31 for CW Min and 1023 for CW Max.
The DS.11 Configuration Utility ♦ 3-21 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.
BreezeNET DS.11 Series User’s Guide 3-22 General Parameters Tab The General Parameters tab provides various bridging and association parameters.
The DS.11 Configuration Utility 3-23 ♦ 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. The default is Disable. ♦ 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.
BreezeNET DS.11 Series User’s Guide 3-24 ♦ 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).
The DS.11 Configuration Utility ♦ 3-25 Set PtMP Mode: Click to set the following parameters to support optimized configuration for Point-to-Multi-Point operation with 2-5 RBs: Minimum Contention Window = 63 RTS Threshold = 2437 in BU, 60 in RB ♦ 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.
BreezeNET DS.11 Series User’s Guide 3-26 When an event occurs, a trap is sent to the defined host address (the setting is made in the SNMP Parameters tab described on page 3-7). This window displays the recorded traps. Click Clear List to clear the display area. 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.
The DS.11 Configuration Utility 3-27 4. Click Advanced to change the settings of the TFTP session used in the upgrade download. The Advanced TFTP setup window is described in the following page. 5. Click Start to initiate the firmware upgrade; progress bars are displayed indicating the progress of the operation. If both BU-DS.11 and RB-DS.11 devices are selected, the program will upgrade RB-DS.11 units first.
BreezeNET DS.11 Series User’s Guide 3-28 ♦ Packet timeout: Defines the time (in seconds) it takes for a packet to timeout. The range is from 1 to 30 seconds with a default of 3 seconds. ♦ Packet Retries: Defines the number of times that a packet will be sent after it timeouts in a TFTP session. The range is from 1 to 5 retries with a default of 3 retries. ♦ Session Retries: Defines the number of times a TFTP session will be repeated before the firmware upgrade operation is designated a failure.
The DS.11 Configuration Utility 3-29 This window lists the selected units and displays the configuration changes to be made during the multiple configuration session. Select the Reset units after setting parameters check box to reset all selected units. NOTE: To ensure proper configuration changes and avoid SNMP Error messages, do not try to configure in BU units parameters that are applicable only to RB units, and vice versa.
Configuration Guidelines 4-1 Chapter 4 - Configuration Guidelines About This Chapter This section provides guidelines regarding configuration of parameters that are important for ensuring optimal performance under various conditions.
BreezeNET DS.11 Series User’s Guide 4-2 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: ♦ Point-to-Point links ♦ Point-to-Multi-Point systems with 2 to 5 RBs. ♦ Compatibility mode, for interoperability wwith DS.11 running previous software versions and other IEEE 802.
Configuration Guidelines 4-3 ♦ 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. RTS Threshold The default value for the minimum packet size required for transmission of a Request To Send message is 2347 bytes.
4-4 BreezeNET DS.
System Troubleshooting 5-1 Chapter 5 - System Troubleshooting About This Chapter The following troubleshooting guide provides answers to some of the more common problems that may occur when installing and using the 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.
BreezeNET DS.11 Series User’s Guide 5-2 Troubleshooting Guide Problem and Indication Possible Cause Corrective Action No power to unit. Power LED is off. Power cord is not properly connected. Verify power cord is properly connected to the BreezeNET unit and to the power outlet. Failure to establish wireless link. WIRELESS LINK LED is off. 1. Power supply to units may be faulty 1. Verify power to units. Failure to establish wireless link (“D” models/external antennas) 2. The RB-DS.
Technical Specifications 6-1 Chapter 6 - Technical Specifications 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 Management and Setup SNMP based Configuration Utility Site Survey Tool Integrated into the configuration utility SNMP Agents MIB II, DS.
BreezeNET DS.11 Series User’s Guide 6-2 Radio Frequency Range 2.4 - 2.4835 GHz Radio Type Direct Sequence Spread Spectrum (DSSS) Wireless LAN Standards Compliant with IEEE 802.
Technical Specifications 6-3 Outdoor Unit-to-Indoor Unit Communication Cable Type Cat 5 FTP 4x2x24 Double Jacket Maximum Cable length 100 m (including the length of the Ethernet cable to the user equipment) Interfaces RF (antenna) connector in the outdoor unit (DS.
6-4 BreezeNET DS.
DS.11 FAQ A-1 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. ♦ Accessories, page A-7. ♦ Management, page A-8.
BreezeNET DS.11 Series User’s Guide A-2 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.
DS.11 FAQ A-3 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 bidirectional traffic loads. If the traffic load is more uni-directional, then the PER will be lower. What is the best value for the CW min parameter? Setting the CW min parameter to 7 should only be used for short-range point-topoint links.
BreezeNET DS.11 Series User’s Guide A-4 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). What is the antenna separation requirement for collocating BU-DS.11 or RBDS.
DS.11 FAQ A-5 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. The TFTP server in the BU-DS.11/RB-DS.11 requires the SNMP write community name (password) to perform an upgrade.
BreezeNET DS.11 Series User’s Guide A-6 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. This will set the read and write Community names to public and private, respectively. How can the DS.
DS.11 FAQ A-7 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. Can the BreezeNET PI-CAT5 product be used with a DS.11 unit? The PI-CAT5 is specifically for the BreezeNET PRO.
BreezeNET DS.11 Series User’s Guide A-8 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. Does the DS.11 offer out-of-band management? The DS.11 does not offer out-of-band management. The DS.
Preparing the Indoor to Outdoor Cable B-1 Appendix B The following figure shows the wire pair connections required for the indoor-tooutdoor cable. 1 2 3 4 5 6 7 8 1+2 4+5 7+8 3+6 Ethernet Connector Pin Assignments The color codes used in cables supplied by Alvarion are: Wire color Pin Blue 1 Blue/white 2 Orange 3 Orange/white 6 Brown 4 Brown/white 5 Green 7 Green/white 8 Use a crimp tool for RJ-45 connectors to prepare the wires.
B-2 BreezeNET DS.
Radio Signal Propagation C-1 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. The transmission medium for electromagnetic wave propagation is free space.
BreezeNET DS.11 Series User’s Guide C-2 PdBm = 10 x Log Pmw For example: 1 Watt = 1000 mW; PdBm = 10 x Log 1000 = 30 dBm 100 mW; PdBm = 10 x Log 100 = 20 dBm For link budget calculations, the dBm convention is more convenient than the Watts convention.
Radio Signal Propagation C-3 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). Antenna gain is expressed in dBi.
BreezeNET DS.11 Series User’s Guide C-4 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. Defined as the angle between two halfpower (-3 dB) points on either side of the main lobe of radiation.
Radio Signal Propagation C-5 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 (0.6 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 EIRP = Pout - Ct + Gt = 16 dBm Pl = 32.
BreezeNET DS.11 Series User’s Guide C-6 ♦ 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. ♦ Interference Interference may be caused by another system on the same frequency range, external noise, or some other co-located system.
Radio Signal Propagation C-7 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.
C-8 BreezeNET DS.
