Alvarion BreezeNET DS.11 User`s guide

BreezeNET DS.11 Series
BU-DS.11
RB-DS.11
User’s Guide
February 2003
Cat No. 213388
Doc rev2.0
BreezeNET DS.11 Series User’s Guide
ii
© 2003 by Alvarion Ltd. All rights reserved.
No part of this publication may be reproduced in any
material form without the written permission of the copyright
owner.
Trade Names
BreezeACCESS®, BreezeNET®, BreezeLINK®, BreezeVIEW™,
BreezeMANAGE™, BreezeCONFIG™, BreezeWIZARD™,
BreezeSECURE™, AlvariBASE™, AlvariSTAR™, AlvariX™,
WALKair® and WALKnet® are trade names of Alvarion 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. Alvarion 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.
Warranties; Disclaimers
All Alvarion Ltd. (“Alvarion”) products purchased from
Alvarion or through any of Alvarion’s authorized resellers are
subject to the following warranty and product liability terms
and conditions.
Important Notice
iii
Exclusive Warranty
Alvarion warrants that the Product hardware it supplies and
the tangible media on which any software is installed, under
normal use and conditions, will be free from significant
defects in materials and workmanship for a period of
fourteen (14) months from the date of shipment of a given
Product to Purchaser (the “Warranty Period”). Alvarion will,
at its sole option and as Purchaser’s sole remedy, repair or
replace any defective Product in accordance with Alvarion’
standard RMA procedure.
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”).
HIGH RISK ACTIVITIES MAY INCLUDE, BUT ARE NOT
LIMITED TO, USE AS PART OF ON-LINE CONTROL
SYSTEMS IN HAZARDOUS ENVIRONMENTS REQUIRING
FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION
OF NUCLEAR FACILITIES, AIRCRAFT NAVIGATION OR
COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, LIFE
SUPPORT MACHINES, WEAPONS SYSTEMS OR OTHER
APPLICATIONS REPRESENTING A SIMILAR DEGREE OF
POTENTIAL HAZARD. ALVARION SPECIFICALLY DISCLAIMS
ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
HIGH RISK ACTIVITIES.
iv
BreezeNET DS.11 Series User’s Guide
(b) PURCHASER’S SOLE REMEDY FOR BREACH OF THE
EXPRESS WARRANTIES ABOVE SHALL BE REPLACEMENT
OR REFUND OF THE PURCHASE PRICE AS SPECIFIED
ABOVE, AT ALVARION’S OPTION. TO THE FULLEST
EXTENT ALLOWED BY LAW, THE WARRANTIES AND
REMEDIES SET FORTH IN THIS AGREEMENT ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES OR
CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR
BY OPERATION OF LAW, STATUTORY OR OTHERWISE,
INCLUDING BUT NOT LIMITED TO WARRANTIES, TERMS
OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, SATISFACTORY QUALITY,
CORRESPONDENCE WITH DESCRIPTION,
NON-INFRINGEMENT, AND ACCURACY OF INFORMATION
GENERATED. ALL OF WHICH ARE EXPRESSLY
DISCLAIMED. ALVARION’ WARRANTIES HEREIN RUN ONLY
TO PURCHASER, AND ARE NOT EXTENDED TO ANY THIRD
PARTIES. ALVARION NEITHER ASSUMES NOR
AUTHORIZES ANY 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 MISUSE, NEGLIGENCE, IMPROPER
INSTALLATION OR IMPROPER TESTING, UNAUTHORIZED
ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND
THE RANGE OF THE INTENDED USE, OR BY ACCIDENT,
FIRE, LIGHTNING OR OTHER HAZARD.
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.
(b) TO THE EXTENT PERMITTED BY APPLICABLE LAW, IN
NO EVENT SHALL THE LIABILITY FOR DAMAGES
HEREUNDER OF ALVARION OR ITS EMPLOYEES OR
AGENTS EXCEED THE PURCHASE PRICE PAID FOR THE
PRODUCT BY PURCHASER, NOR SHALL THE AGGREGATE
LIABILITY FOR DAMAGES TO ALL PARTIES REGARDING
ANY PRODUCT EXCEED THE PURCHASE PRICE PAID FOR
THAT PRODUCT BY THAT PARTY (EXCEPT IN THE CASE OF
A BREACH OF A PARTY’S CONFIDENTIALITY
OBLIGATIONS).
Electronic Emission Notices
This device complies with Part 15 of the FCC rules, ETSI
300-328 and CE.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
BreezeNET DS.11 Series User’s Guide
vi
FCC Radio Frequency Interference Statement
This equipment has been tested and found to comply with
the limits for a Class B 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 residential environment, not
withstanding use in commercial, business and industrial
environments. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and
receiver.
•
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
•
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.
Important Notice
vii
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.
Antenna Installation
WARNING: It is the responsibility of the installer to insure
that when using the outdoor antenna kits in the United
States (or where FCC rules apply), only those antennas
certified with the product are used. The use of any antenna
other than those certified with the product is expressly
forbidden in accordance to FCC rules CFR47 part 15.204.
The installer should configure the output power level of
antennas, according to country regulations and per antenna
type.
viii
BreezeNET DS.11 Series User’s Guide
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 Ltd. Such information is supplied solely for
the purpose of assisting explicitly and properly
authorized users of BreezeNET DS.11equipment.
♦ No part of its contents may be used for any other
purpose, disclosed to any person or firm or reproduced
by any means, electronic and mechanical, without the
express prior written permission of Alvarion Ltd.
♦ The text and graphics are for the purpose of illustration
and reference only. The specifications on which they are
based are subject to change without notice.
♦ The software described in this document is furnished
under a license. The software may be used or copied only
in accordance with the terms of that license.
♦ Information in this document is subject to change
without notice.
♦ Corporate and individual names and data used in
examples herein are fictitious unless otherwise noted.
♦ Alvarion Ltd. reserves the right to alter the equipment
specifications and descriptions in this publication
without prior notice. No part of this publication shall be
deemed to be part of any contract or warranty unless
specifically incorporated by reference into such contract
or warranty.
Important Notice
ix
♦ The information contained herein is merely descriptive in
nature, and does not constitute a binding offer for the
sale of the product described herein.
♦ Any changes or modifications of equipment, including
opening of the equipment not expressly approved by
Alvarion Ltd. will void equipment warranty and any
repair thereafter shall be charged for. 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 installed
and handled in full compliance with the instructions
provided by such manufacturers as attached to this
manual or provided thereafter by Alvarion or the
manufacturers. Non-compliance with such instructions
may result in serious damage and/or bodily harm
and/or void the user’s authority to operate the
equipment and/or revoke the warranty provided by such
manufacturer.
x
BreezeNET DS.11 Series User’s Guide
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.
When requesting support, please have the following items
available:
♦ Configuration of the system, including models of the
Alvarion equipment used and other applicable
equipment and connecting cables
♦ Hardware and Firmware versions of the Alvarion
equipment
♦ Configuration and statistics counters as viewed in the
Configuration Utility
♦ Description of the problem encountered
To contact Alvarion Technical Support Department, refer to
the Alvarion web site: www.alvarion.com/support.htm
Table of Contents
xi
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
1-6
Installation
2-1
Packing List ............................................................................... 2-2
Additional Installation Requirements ......................................... 2-3
Installation Overview.................................................................. 2-4
Outdoor Installation Considerations ........................................... 2-6
Collocating DS.11 Outdoor Units
2-6
Site Selection Factors
2-6
Rooftop Installation
2-8
Antennas for Outdoor Applications
2-8
Antenna Polarization
2-9
Antenna Seal
2-9
Cell Size/Link Distance
2-9
BreezeNET DS.11 Series User’s Guide
xii
Using Outdoor Range Tables
2-10
Available Antennas
2-10
Precautions
2-11
Compliance with Radio Regulations
2-12
Installing the Outdoor Unit....................................................... 2-13
Connecting the Ground and Antenna Cables
2-15
Connecting the Indoor-to-Outdoor Cable
2-15
Installing the Sun Cover (DS.11D Units Only)
2-17
Installing the Indoor Unit ......................................................... 2-18
Configuring Parameters
2-20
Antenna Alignment
2-21
Verifying Correct Operation ...................................................... 2-22
Verifying Correct Operation of the Indoor Unit
2-22
Verifying Correct Operation of the Outdoor Unit
2-23
What to do if the Self Test Fails
2-24
The DS.11 Configuration Utility
3-1
Installing and Accessing the Configuration Utility....................... 3-3
Configuration Utility Modes ........................................................ 3-4
Unit Configuration Mode
3-5
Firmware Upgrade Mode
3-30
Multiple Unit Configuration Mode
3-34
Table of Contents
xiii
Debugging Information ............................................................. 3-36
Resetting the SNMP Community Strings ................................... 3-37
Reloading Factory Default Settings........................................... 3-38
System Troubleshooting
4-1
Troubleshooting Guide ............................................................... 4-2
Technical Specifications
5-1
DS.11 FAQ
A-1
General ...................................................................................... A-2
Collocation................................................................................. A-5
Performance ............................................................................... A-7
Firmware.................................................................................... A-8
Configuration ........................................................................... A-10
Accessories .............................................................................. A-11
Management............................................................................. A-12
Preparing the Indoor to Outdoor Cable
1
Radio Signal Propagation
1
RF Terms and Definitions
2
xiv
BreezeNET DS.11 Series User’s Guide
Introduction
1-1
Chapter 1
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.
1-2
BreezeNET DS.11 Series User’s Guide
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.11 Configuration Utility to setup,
configure, and manage BreezeNET DS.11 units.
♦ Chapter 4: System Troubleshooting - Solves some of
the more common problems which may occur when
installing and using the BreezeNET DS.11 units.
♦ Chapter 5: Technical Specifications - Lists the
technical specifications of the BreezeNET DS.11 units.
♦ Appendix A: DS.11 FAQ- Answers questions frequently
asked by customers.
♦ Appendix B: Preparing the Indoor to Outdoor Cable Explains how to prepare and install the cable connecting
the indoor to the outdoor unit.
♦ Appendix C: Radio Signal Propagation - Describes
many of the terms and concepts related to antennas and
RF (Radio Frequency) systems.
Introduction
1-3
System Description
The BreezeNET DS.11 wireless Base Unit (BU-DS.11) and
Remote Bridge (RB-DS.11) are designed to provide longrange 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.
Functional Description
The BreezeNET BU-DS.11 and RB-DS.11 can be used as
high-speed connections between two or more remote
networks.
Mail
Server
File
Server
Central Network
BU-DS.11
Base Unit
RB-DS.11
1
Server
Remote Network 1
RB-DS.11
2
Server
Remote Network 2
RB-DS.11
3
Server
Remote Network 3
Figure 1-1: BreezeNET DS.11 Point-to-Multipoint Application
BreezeNET DS.11 Series User’s Guide
1-4
BU-DS.11 Wireless Base Unit
The BU-DS.11 is an IEEE 802.11b compliant base station
that connects one or more remote sites to a central server or
Internet connection. In a point-to-multi-point configuration
the BU-DS.11 is the central unit while in point-to-point
configurations it should be installed at one end of the link.
The BU-DS.11 is available in two options: The BU-DS.11 and
the BU-DS.11D.
The BU-DS.11 is the basic unit, equipped with an antenna
integrated into the front cover of the outdoor unit.
The BU-DS.11D doesn’t have an integral antenna and is
equipped with a connector (on the outdoor unit) for an
external antenna (not included with the unit). A protective
sun cover is supplied and should be mounted on the front of
the outdoor unit. Refer to Antennas for Outdoor Applications
on page 2-8 and Available Antennas on page 2-10 for
information on how to select an appropriate external
antenna.
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.
Introduction
1-5
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.11 receives a
message destined for a station on the RB-DS.11's LAN, the
BU-DS.11 forwards it to the RB-DS.11. In this manner, the
RB-DS.11 and the BU-DS.11 work together like a standard
network bridge.
The first time each station on the RB-DS.11’s LAN sends a
message, the station’s address is registered by both the RBDS.11 and the BU-DS.11. It is possible for the RB-DS.11 and
BU-DS.11 to store all the addresses necessary to support an
entire LAN connected to a RB-DS.11.
The RB-DS.11 comes in two options: The RB-DS.11 and the
RB-DS.11D.
The RB-DS.11 is the basic unit, equipped with an antenna
integrated into the front cover of the outdoor unit.
The RB-DS.11D has no integral antenna and is equipped
with an antenna connector (on the outdoor unit) for the
connection of an external antenna (not included with the
unit). When this unit is ordered, a protective sun cover is
supplied with the unit and should be mounted on the front
of the outdoor unit. Refer to Antennas for Outdoor
Applications on page 2-8 and Available Antennas on page 210 for information on how to select an external antenna.
BreezeNET DS.11 Series User’s Guide
1-6
BreezeNET DS.11
Compatibility and Standards
BreezeNET DS.11 products are compatible with the following
standards and are interoperable with other IEEE 802.11b
compatible, 2.4 GHz direct sequence products.
♦ IEEE 802.11b Wireless LAN.
♦ IEEE 802.3 10BaseT Ethernet.
♦ DHCP for automatic IP address assignment.
♦ SNMP for system management.
Installation
2-1
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 2-3,
describes the additional standard tools and materials
required for installation.
♦
Installation Overview, page 2-4, provides an overview of
the installation procedures.
♦
Outdoor Installation Considerations, page 2-6,
describes the factors that must be taken into account
when installing the outdoor units.
♦
Installing the Outdoor Unit, page 2-13, describes how
to install the outdoor unit.
♦
Installing the Indoor Unit, page 2-18, describes how to
install the indoor unit and configure the required
parameters.
♦
Verifying Correct Operation, page 2-22, describes how
to ensure that the installation was successful and the
units are functioning correctly.
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).
♦ Sun Cover with screws (with DS.11D units only).
♦ Pole mounting kit for the Outdoor unit (includes two
brackets and four sets of bolts, nuts and washers).
♦ 110/220 VAC Power Cord.
♦ 20 meter Indoor-to-Outdoor cable.
♦ 3 shielded RJ-45 connectors.
♦ Configuration Utility diskette.
Installation
2-3
Additional Installation
Requirements
The following materials are not supplied with the installation
kit but are required for the installation procedure.
♦ Indoor-to-Outdoor cable* (available in different lengths if
the 20m cable included with the unit is insufficient).
♦ Antenna* and RF cable* (if using an external antenna).
♦ Ground cable with an appropriate termination.
♦ 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.
BreezeNET DS.11 Series User’s Guide
2-4
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. Connect the Indoor-to-Outdoor cable to the outdoor unit
and route it to the location selected for the indoor unit.
Refer to Appendix B for instructions on preparing the
Indoor-to-Outdoor cable.
5. Mount the indoor unit. Connect the Indoor-to-Outdoor
cable to the indoor unit’s Radio port.
6. Connect the indoor unit’s Ethernet port to the user’s
network using an Ethernet cable.
7. Configure the unit’s parameters.
8. Align the antenna and verify connectivity with any other
units.
NOTE:
The indoor unit should only be connected to the power source after it has
been connected to the outdoor unit.
Installation
2-5
Antenna
(BU-DS11D
and
RD-DS11D units
only)
OUTDOOR
ANT 1
Outdoor Unit
Ground Cable
to Grounding Point
Indoor to Outdoor
Unit Cable
INDOOR
Indoor Unit
To LAN
To Mains
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).
2-6
BreezeNET DS.11 Series User’s Guide
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 nonoverlapping channels available in the relevant regulatory
domain) can be collocated on the same building top or tower.
Collocating more then three units may decrease performance
depending upon the type of antenna and its direction. Each
unit should be assigned to one of the non-overlapping
channels: 1, 7, or 13 in ETSI or 1, 6 or 11 in FCC.
Site Selection Factors
When selecting a location for outdoor units and external
antennas, remember to take into consideration the following
guidelines:
♦ Minimum distance between sites.
♦ Maximum height above the ground.
♦ Maximum line of sight clearance.
Installation
2-7
Path of Clearest Propagation
A propagation path is the path that signals traverse between
the antennas of any two units. The “line” between two
antenna sites is an imaginary straight line, which may be
drawn between the two antennas. Any obstacles in the path
of the “line” degrade the propagation path. The best
propagation path is, therefore, a clear line of sight with good
clearance between the “line” and any physical obstacle.
Physical Obstacles
Any buildings or other physical structures such as trees,
mountains or other geographic features higher than the
antenna and situated in the path between the two sites can
constitute obstructions and cause signal attenuation. Install
outdoor antennas high enough to avoid any obstacles, which
may block the signal.
Path Loss
Path loss is determined mainly by several factors:
♦ Distance Between Sites: Path loss is lower and system
performance 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.
BreezeNET DS.11 Series User’s Guide
2-8
♦ Antenna Height: Path loss is lower when antennas are
positioned higher. Antenna height is the distance from
the imaginary line connecting the antennas at the two
sites to ground level. Ground level in an open area is the
actual ground. In dense urban areas, ground level is the
average height of the buildings between the antenna
sites.
Rooftop Installation
Rooftop installations offer several advantages:
♦ Fewer obstacles in the path.
♦ Improved performance due to greater height.
Antennas for Outdoor
Applications
The BreezeNET DS.11 series can be used in point-to-point
or point-to-multipoint configurations.
Point-to-Point
The BU-DS.11/RB-DS.11 can be equipped with a directional
antenna. The required antenna gain depends on the required
range and performance.
Installation
2-9
Point-to-Multipoint
Setting up a point-to-multipoint link requires the use of a
Base Unit equipped with an omni-directional antenna (or an
antenna with sufficient bandwidth to illuminate all units)
and at least two remote units equipped with high-gain
directional antennas.
Antenna Polarization
Antenna polarization must be the same at both ends of the
link. In most applications, the preferred orientation is
vertical polarization, which is best for above ground
propagation. To verify antenna polarization, refer to the
assembly instructions supplied with the antenna set.
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.11 units, the suggested maximum
distance is up to 6 miles (10Km) where ETSI is the regulatory
domain and 15 Miles (25 Km) where FCC is the regulatory
domain.
BreezeNET DS.11 Series User’s Guide
2-10
NOTE:
The maximum distance of 24Km/15 miles is achieved using 24 dBi
antennas and 24 dBm output power. The maximum distance of 10Km is
achieved using 24 dBi antennas and –4dBm output power.
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. Solid obstacles such as buildings or hills can
prevent the establishment of a link while partial obstacles
such as trees or traffic can reduce range. Extended coaxial
cables can cause an increase in signal loss and a reduction
in range.
Available Antennas
The following table lists several antennas suitable for
BreezeNET DS.11 units.
TIP:
Cable length should be minimized in order to gain maximum link budget.
Installation
2-11
Model
Ant.
Gain
Ideal for:
Dispersion
Dimensions
HxWxD
OMNI-8
8 dBi
Establishing 360°
coverage for outdoor
multipoint links.
360°H/13° V
20" x 5/8"
Tubular
UNI-16P
16
dBi
Medium to long range
outdoor links requiring
compact form factors.
28°H/28° V
11" x 11" x 3.5"
UNI-24
24
dBi
Long range outdoor
point-to-point links.
6°H/10° V
24" x 36" x 15"
Table 2-1: Available Antennas
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.
The system complies with the ETS 300 385 standard and is
protected against secondary lightning strikes when its
outdoor unit is properly grounded according to the
applicable country-specific industry standards for protection
against lightning. The system complies with EN 61000-4-5,
test level 3 (2kV).
2-12
BreezeNET DS.11 Series User’s Guide
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 detached antennas.
Compliance with Radio
Regulations
Regulations regarding maximum antenna gains vary from
country to country. It is the responsibility of the end user to
operate within the limits of these regulations as well as to
ensure that the professional installer is aware of these
regulations.
Violation of government regulations exposes the end user to legal
and financial liabilities. Alvarion, its resellers and distributors
shall not be liable for expense or damage incurred as a result of
installations that exceed local transmission power limitations.
Installation
2-13
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.
Figure 2-3 illustrates the method of installing a unit on a
pole using the supplied brackets.
NOTE:
Make sure to install the unit with the bottom panel (the panel with the
signal strength bar and LEDs) facing downward.
Figure 2-2: Installation Holes/Grooves
BreezeNET DS.11 Series User’s Guide
2-14
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
2-15
Connecting the Ground and
Antenna Cables
The Ground terminal (marked ) is located on the bottom
panel of the outdoor unit. The Antenna RF connector
(marked
) is located on the top panel of the BU-DS.11D
outdoor unit.
NOTE:
In DS.11 units with two antenna connectors, always use the connector
marked
- 1.
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.11D units, connect an RF cable between the
antenna connector and the antenna.
Connecting the Indoor-toOutdoor Cable
The following steps and figure illustrate how to connect the
indoor-to-outdoor cable.
1. Remove the two screws holding the waterproof seal to
the outdoor unit and remove the waterproof seal.
2. Unscrew the top nut from the waterproof seal.
BreezeNET DS.11 Series User’s Guide
2-16
Figure 2-4: The Waterproof Seal
3. Route a straight, uncrimped Ethernet cable (8-wire, 24
AWG) through both the top nut and the waterproof seal.
NOTE:
The 8-wire cable should be shielded.
4. Insert and crimp the RJ-45 connector. Refer to Appendix
B for instructions on preparing the RJ-45 cable
connector.
5. Connect the Ethernet cable to the Outdoor unit RJ-45
connector.
6. Replace the waterproof seal and then the top nut. Make
sure that the external jack of the cable is well inside the
waterproof seal to guarantee a good seal.
7. Route the cable to the location selected for the Indoor
unit.
Installation
2-17
Installing the Sun Cover
(DS.11D Units Only)
With DS.11D units, a plastic Sun Cover is provided to
protect the unit from direct sunlight. It is mounted to the
front of the unit using four standard screws (included).
2-18
BreezeNET DS.11 Series User’s Guide
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 wall-mounted. The drilling
template included with the unit can be used to simplify
the wall installation process.
2. Assemble an RJ-45 connector with a protective cover on
the indoor side of the Indoor-to-Outdoor cable. Refer to
Appendix B for instructions on preparing the RJ-45
cable connector.
3. Connect the Indoor-to-Outdoor cable to the Radio
connector, located on the top panel of the indoor unit
shown in Figure 2-6 on page 2-20. The Indoor-toOutdoor cable should be connected to the unit before
the unit is connected to the mains power.
Installation
2-19
4. After connecting the outdoor unit to the indoor unit
using the Indoor-to-Outdoor cable, connect the power
cord to the unit’s AC socket, located on the bottom
panel shown in Figure 2-5. Connect the other end of the
power cord to the AC mains after verifying that the unit
is rated for the voltage in the country of use; the AC
rating is indicated on the bottom panel of the Indoor
unit.
NOTE:
The color codes of the power cable are:
Brown: phase ~
Blue: neutral 0
Yellow/Green: grounding
Figure 2-5: Indoor Unit Bottom Panel
5. Verify that the yellow POWER LED located on the top
panel is lit, indicating that the unit is supplying power
to the radio port.
BreezeNET DS.11 Series User’s Guide
2-20
Figure 2-6: Indoor Unit Top Panel
6. Connect the 10BaseT connector 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 90 meters.
Configuring Parameters
Before aligning the antenna, certain key parameters must be
configured to enable connectivity with linked units.
See Unit Configuration Mode on page 3-5 for more
information.
Installation
2-21
Antenna Alignment
Usually, low gain antennas do not require alignment due to
their very wide radiation pattern. High gain antennas,
including the integral antenna of DS.11 units, have a narrow
beamwidth necessitating an alignment procedure in order to
optimize the link.
Check the antenna alignment by using the RSSI bar on the
bottom panel of the
RB-DS.11 unit.
To align the antenna:
1. Confirm that the units at both ends of the link are
receiving power.
2. Synchronize the units by aligning the antennas at the
central and remote sites until maximum signal quality is
obtained. Check the signal quality RSSI bar on the
bottom panel of the RB-DS.11. The first LED lights red
to indicate that the unit is working. The remaining nine
LEDs light green to indicate the signal strength. The
stronger the signal, the more LEDs are lit. Rotate the
antenna to the left or right until you reach the point of
maximum RSSI reading. Make sure that at all times the
front of the antenna faces the general direction of the
BU-DS.11.
BreezeNET DS.11 Series User’s Guide
2-22
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 2-20, and as described in Table 2-2.
Name
Description
Functionality
POWER
Power indication
Green - 48VDC is present on the Radio RJ45
port.
Off - No power is supplied to the Radio RJ45
port.
LINK
Self Test and Ethernet
Link indication
The LINK LED indicates end-to-end
connection between the outdoor unit and the
Ethernet connection to the indoor unit.
Off – No Ethernet connectivity has been
detected between the outdoor unit and the
device connected to the indoor unit.
Orange– Self-test passed and Ethernet
connection is confirmed by the Outdoor unit
(Ethernet integrity check passed).
Table 2-2: Indoor Unit LEDs
Installation
2-23
Verifying Correct Operation of
the Outdoor Unit
To verify proper operation, check the LED indicators located
on the bottom panel of the outdoor unit.
Name
Description
Functionality
WLAN
Wireless Link Indicator
Blinking Green – Data received or transmitted on
the wireless link. Blinking rate is slower when
there is less wireless traffic.
DC
Power
Self Test and Power
indication
Green – Power is available and self test passed.
Red – Self test failed. Firmware did not load
successfully.
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-toOutdoor cable connections.
RSSI
BAR
RB-DS.11: Received Signal Strength Indication
BU-DS.11: Number of associated RB-DS.11
units
Table 2-3: Outdoor Unit LEDs
BreezeNET DS.11 Series User’s Guide
2-24
What to do if the Self Test
Fails
If the Self-Test fails (DC Power LED light remains red), try
the following:
♦ Reset unit (Disconnect/reconnect the power).
♦ Check the Indoor-to-Outdoor cable.
♦ Reset to factory defaults (see page 3-38).
Contact technical support.
The DS.11 Configuration Utility
3-1
Chapter 3
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, APDS.11 and SA-DS.11. The description in this manual,
however, is limited to management and configuration of BUDS.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.
Using the Configuration Utility you can:
♦ Assign radio channels for optimal cell operation.
♦ Configure units with a specified IP address.
♦ Set the SNMP Read/Write Community strings.
BreezeNET DS.11 Series User’s Guide
3-2
♦ Verify the status of all units in the network.
♦ Configuration of a wide range of operational parameters,
including WLAN, IP and Security parameters.
♦ View Tx and Rx counters.
♦ Obtain general information such as the Firmware version
and system name.
This chapter is comprised of the following sections:
♦
Installing and Accessing the Configuration Utility,
page 3-3, describes how to install and initialize the
configuration application.
♦
Configuration Utility Modes, page 3-4, describes the
various modes, functions and parameters of the
Configuration Utility.
♦
Debugging Information, page 3-36, describes how to
create a log file for the purposes of receiving technical
support.
♦
Resetting the SNMP Community Strings, page 3-37,
describes how to restrict management access by defining
the SNMP Read/Write Community string.
♦
Reloading Factory Default Settings, page 3-38,
describes how to revert unit parameters to their original
factory defaults.
The DS.11 Configuration Utility
3-3
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.11 Configuration Utility folder
under Programs.
3-4
BreezeNET DS.11 Series User’s Guide
Configuration Utility Modes
There are several DS.11 Configuration Utility modes of
operation; these options are selected via the Mode menu in
the configuration utility main window (shown below). The
selected mode(s) is indicated by a check mark in the menu.
♦ Unit configuration: This is the default mode and is used
for setting parameters as detailed in this manual.
♦ Firmware upgrade: Used for upgrading the embedded
software in managed units; refer to Firmware Upgrade
Mode, on page 3-30 for instructions on using this
feature.
♦ Multiple configuration: Used for setting configuration
parameters for more than one unit simultaneously; refer
to Multiple Unit Configuration Mode, on page 3-34, for
instructions on using this feature.
♦ Trap quick view: When set to this mode, the PC
switches automatically to the Trap Monitor tab when Unit
Configuration mode is selected.
The DS.11 Configuration Utility
3-5
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.
♦ Locate units behind a router that cannot be detected by
the autodiscovery feature
♦ Assign unit IP addresses based on unit MAC addresses.
♦ Set the SNMP Community string.
NOTE:
If there are many units in the managed network, you can enlarge the list
box by clicking the horizontal line above the list Click again to toggle back
the default display state. The list box also displays the location of each
unit, as set in the Station Status window.
BreezeNET DS.11 Series User’s Guide
3-6
Tabs Section
This section consists of several tabs, each containing
parameters required for the management of the selected
unit; the number of tabs displayed varies between the type of
managed unit. The different tabs are described in the
following sections. When you switch between the tabs, the
unit selection section with the selected unit address remains
displayed.
Figure 3-1: DS.11 Configuration Utility Main Window (Station
Control Tab)
The DS.11 Configuration Utility
3-7
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.
♦ Type the unit's IP address in the Locate Unit field (for
stations which are located behind a router) and click
This will add the unit information to the selection list.
Setting the SNMP Community String
Type the known Read/Write Community string in the
Community field (the default string is public for read and
private for read/write) and click the
button to confirm.
.
BreezeNET DS.11 Series User’s Guide
3-8
Assigning and Editing IP Addresses
Manually (based on MAC addresses)
This section describes how to manually input or modify the
IP address of the selected unit.
1. Click the Set IP button. The Set IP dialog box appears.
Figure 3-2: The Set IP Dialog Box
2. Type the parameters in the appropriate fields and click
OK; the MAC address is shown on the bottom label of
the Indoor and Outdoor units. A message box is
displayed notifying you when the changes are to take
affect. This feature can be used only if the DS.11
Configuration Utility is on the same Ethernet segment
as the unit and not behind the router.
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.
The DS.11 Configuration Utility
3-9
Application Control Buttons
The following buttons always appear at the bottom of the
Configuration Utility window. Additional buttons, specific to
certain tabs, are explained when relevant.
♦ Hide to Tray: Minimizes the application into the
icon, placed in the Windows task bar (at the bottom of
the Windows desktop). To restore the application, click
the
icon.
♦ Apply: Implements any changes you made.
♦ Refresh: Refreshes the window with the most recent data
from the unit.
♦ Cancel: Closes the window without implementing any
changes you made.
BreezeNET DS.11 Series User’s Guide
3-10
Configuration Utility Tabs
The following sections describe the tabs and parameters
provided by the Configuration Utility in Unit Configuration
mode.
Station Status Tab
The Station Status tab displays general information
regarding the unit's firmware and hardware versions as well
as general unit address information.
Figure 3-3: Station Status Tab (RB-DS.11)
The DS.11 Configuration Utility
3-11
The Station Status tab is comprised of the following
components:
♦ System Name: The name of the selected unit.
♦ 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 information provided for each associated
RB-DS.11 unit includes it’s MAC address and the level at
which it is received by the BU-DS.11 (RSSI).
BreezeNET DS.11 Series User’s Guide
3-12
IP Parameters Tab
The IP Parameters tab enables you to define or edit the IP
parameters of units.
Figure 3-4: IP Parameters Tab
♦ IP Address: The IP address of the selected unit.
♦ Subnet mask: The Subnet mask of the selected unit.
♦ Default gateway: The default gateway of the selected
unit.
The DS.11 Configuration Utility
♦ 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.
NOTE:
When the unit is configured to use a DHCP server and none exists, the
unit will assign itself an automatic class B address in the range
169.254.X.X; this can be used with Auto Discovery when the MAC
address is not available.
3-13
BreezeNET DS.11 Series User’s Guide
3-14
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.
♦ Trap Host IP Address: The IP address of the host to
which SNMP traps are sent.
♦ Click
to apply the defined Trap Host IP address.
♦ Click
to disable the sending of traps (inserts a value of
255.255.255.255).
The DS.11 Configuration Utility
Counters Tab
The Counters tab displays a series of statistics relating the
usage and performance.
Figure 3-6: Counters Tab (BU Units)
Figure 3-7: Counters Tab (RB Units)
3-15
BreezeNET DS.11 Series User’s Guide
3-16
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.
Additional performance counters displayed in this window
include the following. To obtain a graph that displays the
counter values, select a counter and drag it to the
icon.
♦ Tx Counters
Tx Fragments: The number of transmitted
frames. The count includes data, control,
management frames and 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).
Tx Frames: The number of frames successfully
transmitted to the wireless media. The count
includes the first transmission of data frames
(without retransmissions), and the number of
control and management frames.
Multicast Tx Frames: The number of
successfully transmitted multicast frames.
Retry Count: The number of frames that were
successfully transmitted after one of more
retransmissions.
Multiple Retry: This counter is incremented
when a packet is successfully transmitted after
more than one retransmission.
The DS.11 Configuration Utility
3-17
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 data, control, and duplicate data
frames.
Multicast Rx Frames: The number of received
multicast frames.
FCS Error: The number of frames received with a
CRC error.
FCS Error (%): The percentage of frames received
with a CRC error, calculated as follows:
100*FCS Error / (Rx Fragments + Multicast Rx
Frames + FCS Error).
Frame Duplicate: The number of duplicate
frames that were received.
♦ Link Counters
The Tx Success and Tx Fail counters displayed at the end of
the counters list are link-specific; to activate these counters
for a specific link, select the MAC address of the unit at the
other end of the link and click Apply.
BreezeNET DS.11 Series User’s Guide
3-18
When you click the Reset Counters button, these counters
are actually reset (unlike the other counters which are only
reset on screen).
Tx Success: The number of data and
management frames (except to beacons and
multicasts) that were transmitted and
acknowledged by the intended recipient.
Tx Fail: The number of data and management
frames (except to beacons and multicasts) that
were transmitted without being acknowledged by
the intended recipient.
Tx Fail (%) – The percentage of data and
management frames (except to beacons and
multicasts) that were transmitted without being
acknowledged by the intended recipient,
calculated as follows:
100*T x Fail / (Tx Success x Tx Fail)
♦ Resetting Counters
You can reset the counters displayed in the Counters tab by
clicking the Reset Counters button. All displayed values are
reset to display zero.
Note that this action does not reset the counters stored in
the actual unit, but just resets the values displayed in the
screen (an exception to this are the Link Counters).
Therefore, if you exit the Counters tab, after performing a
reset and reopen it at a later time the counter values are
displayed to reflect the values stored in the unit. To reset the
counters in the unit, turn off the unit and then turn it back
on.
The DS.11 Configuration Utility
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)
3-19
3-20
BreezeNET DS.11 Series User’s Guide
Figure 3-9: WLAN Parameters Tab (RB Units)
The WLAN Parameters tab is comprised of the following
components:
♦ Regulatory Domain: Displays the regulatory authorities
in the relevant country of use (e.g., Canada, ETSI, FCC,
Japan).
♦ Power: Displays the current output power level at the
antenna port.
♦ ESSID: An ASCII string of up to 32 characters used to
identify a WLAN that prevents the unintentional merging
of two co-located WLANs. It is essential that the ESSID is
set to the same value in all Remote Bridges and Base
Units that should communicate with each other. The
ESSID field is case-sensitive.
The DS.11 Configuration Utility
3-21
♦ Maximum data rate: By default, the unit adaptively
selects the highest possible rate for transmission. Under
certain conditions (for range/speed trade-off) you may
decide not to use the higher rates. Possible values are 2,
5.5 or 11 Mbps. The default value is 11 Mbps.
♦ Transmit diversity: The antenna diversity option, which
must be set to Antenna No. 1.
NOTE:
In the present product release, antenna diversity is not supported;
therefore, always select Antenna No. 1.
♦ Range: The operative range of your WLAN or Wireless
Link in the drop down list. This parameter affects the
acknowledge delay time which needs to be increased in
long links. The default value is up to
5 km.
♦ Channel: Channel selection varies, depending on the
type of unit.
For BU-DS.11 units, select the channel that the unit will use
by selecting a value (range: 1-13, depending on your
regulatory domain) from the Channel drop down menu. Refer
to Table 3-2 on page 3-23 for the list of corresponding
frequencies.
For RB-DS.11 units, there are two channel setting options: if
you select the Fixed Channel option by clicking the
appropriate radio button, then the RB-DS.11 will search for
the BU-DS.11 unit on the selected channel (from the
Channel pull down field) and synchronize with it. The
channel you select must match the channel selected in the
BU-DS.11 unit at the other end of the link.
BreezeNET DS.11 Series User’s Guide
3-22
If you select the Scanning Mode option (by selecting the
appropriate radio button), you can specify preferred channels
by clicking one or more of the buttons displayed at the
bottom of the window. In this mode, the RB-DS.11 will first
search for the BU-DS.11 unit on the channel you select in
the Channel pull down field and synchronize with it if the
link is established. If the RB-DS.11 does not find the
BU-DS.11, it will scan and search for one of the preferred
channel frequencies you selected. If it does not find the BUDS.11 on any of the preferred channels, it will continue to
scan until it finds the BU-DS.11 on one of the channels
permitted according to the regulatory domain.
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.
Output
Power
Default
Output
Power
ETSI
1
13
7
14
4
FCC
1
11
6
24
24
TELEC
1
13
7
14
6
France
10
13
11
14
4
Canada
1
11
6
24
24
Table 3-1: Regulatory Domains Specifications
The DS.11 Configuration Utility
3-23
Channel
Frequency
1
2412 MHz
2
2417 MHz
3
2422 MHz
4
2427 MHz
5
2432 MHz
6
2437 MHz
7
2442 MHz
8
2447 MHz
9
2452 MHz
10
2457 MHz
11
2462 MHz
12
2467 MHz
13
2472 MHz
Table 3-2: Frequency List
NOTE:
The frequencies listed in the table are at the center of the channel. Each
channel occupies 22MHz, therefore each channel occupies
-11MHz to +11 MHz from the frequency specified.
BreezeNET DS.11 Series User’s Guide
3-24
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:
♦ Station Control: Click the Default button for all
parameters to revert to the factory defaults.
♦ Reset Unit: Click the Reset button to reset the unit and
apply any changes made to the system parameters.
♦ Export Configuration - Click the Export button to
export the current basic configuration of this unit to a
file. A popup window is displayed prompting you to
specify the name of the file. The created file can be used
to save the configuration information or to send it to tech
support as a reference for troubleshooting.
The DS.11 Configuration Utility
3-25
Security Tab
The Security tab enables you to the define the WEP keys
used of encryption purposes.
Figure 3-11: Security Tab
This tab displays information regarding the unit’s security
configuration. Wired Equivalent Privacy (WEP) is an
authentication algorithm that protects authorized Wireless
LAN users against eavesdropping and is implemented in
BreezeNET DS.11 units. WEP is defined in the IEEE 802.11b
standard. This encryption is applicable for both
authentication and data and the key length is 40 bits.
DS.11 units can use one of the following authentication
algorithms (as defined in the IEEE 802.11b standard).
♦ Open System: Any station in the WLAN can associate
with any other unit and receive and transmit data freely
(null authentication).
BreezeNET DS.11 Series User’s Guide
3-26
♦ Shared Key: Only stations using a shared key encryption
are allowed to associate.
The default authentication algorithm is Open System.
If you select the Shared Key algorithm, set the following
parameters:
♦ Default Key ID – Sets the key for encryption.
♦ WEP Key – Defines the encryption keys used. Define
each key by clicking the appropriate WEP Key row and
entering ten hexadecimal characters (five sets of two
characters each) for each of the four keys. After clicking
Apply, the WEP Key values are displayed as zeros for
security reasons.
The default WEP key is the first key.
NOTE:
All units in the same cell should use the same key.
The DS.11 Configuration Utility
3-27
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.
♦ RTS Threshold: The minimum packet size required for
an RTS (Request to Send) to be sent. For packets with a
size below the RTS Threshold value, an RTS is not sent
and the data packet is transmitted directly to the WLAN.
♦ Short Retry Limit: The maximum number of
transmission attempts for a frame that is shorter than or
equal to the RTS Threshold. The default value is 8.
BreezeNET DS.11 Series User’s Guide
3-28
♦ Long Retry Limit: The maximum number of
transmission attempts for a frame that is longer than the
RTS Threshold. The default value is 4.
♦ 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.
Therefore, it is recommended to use a lower rate for
transmission of broadcast, multicast and control frames,
to increase the probability that they will be received
without errors. Enter the data rate at which broadcast,
multicast and control frames are transmitted. The
default value is 2 Mbps.
NOTE:
The Basic Rate parameter should be changed only if you are sure that all
units in the cell can handle the defined rate. Use this parameter with
caution, as it may bring the link down.
♦ Power: The transmit power level. The possible range is
from –4dBm to +24dBm.
NOTE:
The Power setting should not exceed the maximum output allowed in the
applicable regulatory domain according to Table 3-1 on page 3-22.
The DS.11 Configuration Utility
Trap Monitor Tab
The Trap Monitor tab enables you to view messages received
from the selected unit.
Figure 3-13: Trap Monitor Tab
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 3-14). This window displays the recorded
traps.
Click Clear List to clear the display area.
3-29
BreezeNET DS.11 Series User’s Guide
3-30
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 3-14: Firmware Upgrade Mode dialog box
NOTE:
The Configuration utility does not resolve the topology of the cell.
Therefore, firmware upgrades should be made from the central point
where the BUs are located.
The list box on the left-hand side of the dialog box displays
the managed units; it is sorted sequentially by BU-DS.11
followed by RB-DS.11 units.
The DS.11 Configuration Utility
3-31
To upgrade the firmware:
1. Select the units that you wish to upgrade from the list
box. Use Shift-click and/or Ctrl-click to select multiple
units, or select multiple units by dragging with the
mouse.
2. Specify the firmware file you wish to use in the Local file
name fields; there are separate fields for files of different
device type. The field text is displayed in blue when
corresponding unit types are selected in the list box.
3. In the Remote File Name field, enter the Read/Write
community string of the unit(s).
4. Click Advanced to change the settings of the TFTP
session used in the upgrade download.
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
3-32
At the end of the upgrade session, the following window is
displayed indicating that the operation was successful.
Figure 3-15: 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.
The DS.11 Configuration Utility
3-33
Advanced TFTP Settings
This section describes how to configure advanced parameters
when using the firmware upgrade utility.
Figure 3-16: Advanced TFTP Setup
The Advanced TFTP Setup window enables you to tune the
TFTP session parameters for a more efficient firmware
upgrade, depending on your actual deployment.
♦ 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 range is 1-5 retries
with a default of 3 retries.
BreezeNET DS.11 Series User’s Guide
3-34
Multiple Unit Configuration
Mode
This feature enables configuration parameters to be
downloaded to multiple units simultaneously. When you
select this option from the Options menu, all configuration
windows are displayed as write-only. Irrelevant parameters
are disabled.
NOTE:
The Configuration Utility does not resolve the topology of the cell.
Therefore, multiple unit configuration operations should be done at the
location where the BU is are located.
Select the units to be upgraded from the list box on the lefthand side of the tabs. Use Shift-click and/or Ctrl-click to
select multiple units.
The DS.11 Configuration Utility
Enter the configuration parameter values and click Apply.
The following window is displayed.
Figure 3-17: Multiple Configuration Mode
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.
A log of the multiple configuration session is displayed during
and after the operation.
3-35
BreezeNET DS.11 Series User’s Guide
3-36
Debugging Information
This option enables you to create a log file named
BreezeLog.log. You can send this log file to Alvarion technical
support and receive help based on the information recorded
in this file.
To start recording, open the Debug Info menu item in the
Main menu and select Start Log.
When you finish recording (usually after 24 hours) select
Stop Log from the Debug Info menu and send the file to
Alvarion technical support representatives.
The DS.11 Configuration Utility
3-37
Resetting the SNMP
Community Strings
The SNMP Read/Write Community strings are 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 while the unit is operating. The community
strings are reset to the default values, private (Write) and
public (Read).
3-38
BreezeNET DS.11 Series User’s Guide
Reloading Factory Default
Settings
To reset the unit to the factory defaults:
1. Disconnect the power cable from the indoor unit.
2. Insert a paper clip or another suitable tool into the Reset
button on the top panel of the unit (see Figure 2-6 on
page 2-20). Keep the Reset button pressed while
inserting the power cable back into its socket.
System Troubleshooting
4-1
Chapter 4
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
4-2
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
and unit resets
every few
minutes.
1. Power supply to units
may be faulty
1. Verify power to units.
2. The RB-DS.11 units
may not have the same
ESSID as the BUDS.11.
2. Verify that all units in the network have
the same ESSID (ESSID must be
identical in all units in the WLAN; the
ESSID is case sensitive). Check that the
units are on the same channel.
3. Verify wireless link:
Set BU-DS.11 and RB-DS.11 units side
by side.
Power on each unit and see if a wireless
link is established (even “D” models
without their external antennas should
establish a link if placed side by side).
If the units fail to associate, reset units to
factory default values. The units should
now establish a wireless link.
System Troubleshooting
4-3
Problem and
Indication
Possible Cause
Corrective Action
Failure to
establish wireless
link (“D”
models/external
antennas)
1. Power supply to units
may be faulty.
1. Verify power to units.
2. Cables may be
improperly connected
3. There may be some
problem with antenna
installation.
2. Verify that all cables are connected
securely.
3. Refer to previous Section and verify
wireless link between the units.
4. Verify that the antenna(s) are properly
installed (see relevant section in this
manual):
Check antenna alignment.
Verify that antenna polarization is the
same at both ends.
Verify that the range matches
specifications.
Verify line-of-sight/antenna
alignment/antenna height.
BreezeNET DS.11 Series User’s Guide
4-4
Problem and
Indication
Possible Cause
Corrective Action
Wireless link
established, but
there is no
Ethernet activity
(BU-DS.11 and
RB-DS.11 units).
1. Ethernet hub port or
UTP cable is faulty.
1. Check that the LINK LED is lighted
Green. If this is not the case, the port is
inactive. Try another port on the hub or
another UTP cable.
2. Ethernet port in unit
is faulty.
3. The RB-DS.11 is
associated to a
BU-DS.11 unit that is
not connected correctly
to the LAN.
2. Verify that Ethernet port in unit is
working. Ping unit to verify Ethernet
connection.
3. Verify that you are using a cross-over
UTP cable (pins 1 & 3, 2 & 6) if
connected directly to a workstation, or a
straight-through cable if connected to a
hub.
4. Check the unit’s LINK LED indicator
and check the Ethernet counters in the
monitor to verify Ethernet activity.
5. Check that the BU-DS.11 is correctly
connected to the LAN.
Technical Specifications
5-1
Chapter 5
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.
BreezeNET DS.11 Series User’s Guide
5-2
Configuration and Management
Management and
Setup
SNMP based Configuration Utility
Site Survey Tool
Integrated into the configuration utility
SNMP Agents
MIB II, Bridge MIB, DS.11 Private MIBs
Software Upgrade
Simultaneous multiple units software upgrade using the
configuration utility
TFTP download
Indoor Interface Unit
LED Indicators
Outdoor Unit
Power status
Power Status
End-to-end Ethernet
10-LED display bar:
status
RSSI in the RB/ Load Gauge in
BU
Ethernet Status / Traffic
Wireless Link Status / Traffic
Technical Specifications
5-3
Radio
Frequency Range
2.4 - 2.4835 GHz
Radio Type
Direct Sequence Spread Spectrum (DSSS)
Wireless LAN
Standards
Compliant with IEEE 802.11b HR
Selectable sub
Channels
FCC
1-11
ETSI
1-13
Japan TELEC
1-13
France 10-13
FCC
-4, -2, 4, 6, 12, 14, 20, 24 (dBm)
ETSI
-4, -2, 4, 6, 12, 14 (dBm)
Output Power
(at the antenna port)
Japan TELEC
-4, -2, 4, 6, 12, 14 (dBm)
Data Rate
Sensitivity
Modulation
Sensitivity
11 Mbit/s
-85 dBm
256 CCK
(BER 10E-6)
5.5 Mbit/s
-88 dBm
16 CCK
2 Mbit/s
-90 dBm
DQPSK
1 Mbit/s
-93 dBm
DBPSK
Processing Gain
10.4 dB Nominal
Integrated Antenna
Type
Flat Panel 16 dBi, 20° Vertical /Horizontal
BreezeNET DS.11 Series User’s Guide
5-4
Range
Europe/ ETSI
(20 dBm EIRP)
Up to 10 km
US FCC
Up to 25 km (15 miles)
Security
Authentication and
Data
40-bit RC4 WEP
Outdoor Unit-to-Indoor Unit Communication
Cable Type
Cat 5 FTP 4x2x24 Double Jacket
Maximum Cable length
between units
90 m (280 feet)
Interfaces
RF (antenna) connector in
the outdoor unit (DS.11D
models)
N-Type jack, lightning protected
Baseband
(indoor-to-outdoor units)
Outdoor units: Shielded RJ-45 with special water proof
sealed cap
Indoor units: Shielded RJ-45
Indoor units: 10BaseT, (RJ-45) with 2 embedded LEDs
Ethernet
Electrical
Power Consumption
110VAC: 25W
220VAC: 24W
Technical Specifications
5-5
Mechanical Dimensions
Outdoor Unit
30.5 x 12 x 5 cm
12 x 4.7 x 2 in
Indoor Unit
16 x 9 x 6 cm
6.3 x 3.5 x 2.3 in
Environmental
Operating Temperature
Indoor unit: 0°C to 40°C
Outdoor unit: -40°C to 55°C
Operating Humidity
5% to 95% non-condensing. Outdoor units are weather
protected.
Standards Compliance, General
EMC
EN 300-385, FCC Part 15
Safety
EN 60950, UL 1950
Environmental
ETS 300 019
Radio
ETSI ETS 300 328, FCC Part 15
5-6
BreezeNET DS.11 Series User’s Guide
DS.11 FAQ
A-1
Appendix A
The 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-5.
♦ Performance, page A-7.
♦ Firmware, page A-8.
♦ Configuration, page A-10.
♦ Accessories, page A-11.
♦ Management, page A-12.
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 proof so it is best to mount the DS.11 indoors or
in a protective cabinet.
Do DS.11 units support 802.1Q VLAN?
Yes, but the support is limited to transparent operation. This
means that the DS.11 does not take any action on 802.1Q
frames, but will transparently pass them within a VLAN
network.
What is the maximum number of networked PCs the
BU-DS.11/RB-DS.11 can learn?
1024 network MAC addresses can be learned by the BUDS.11/RB-DS.11 from the LAN side.
Can the BU-DS.11/RB-DS.11 be used for multi-point as
well as point-to-point links?
Yes. The BU-DS.11 can support multiple RB-DS.11 units
creating a point-to-multi-point network.
How many RB-DS.11 units can one BU-DS.11 support?
The maximum number of associations is 128.
DS.11 FAQ
A-3
What is the practical limit to the number of RB-DS.11
units per BU-DS.11? And, what performance can I
expect for a multi-point link?
This depends upon average throughput expectations. All
clients would have the maximum throughput available for
burst traffic, however the overall average would depend on
the utilization of the network. For example, in a heavily
utilized network needing about 350Kbps to 500kbps average
net throughput per site, 9 to 12 RB-DS.11’s would be the
limit. For a moderately utilized network needing about
175Kbps to 258Kbps average, 18 to 24 RB-DS.11’s should
be used, and for a lightly used network needing 32Kbps to
48Kbps average net throughput per site could use up to 128
RB-DS.11’s.
What is the range of the BU-DS.11/RB-DS.11 Bridges?
15 miles/24Km (FCC) or 10 KM (ETSI) can be achieved using
the UNI-24 antenna kit for a point-to-point link. Consult the
antenna and accessory guide range tables for distances
using other antennas.
Does the BU-DS.11/RB-DS.11D support 802.1d spanning
tree protocol?
No, the BU-DS.11/RB-DS.11 does not support spanning
tree.
BreezeNET DS.11 Series User’s Guide
A-4
What is the normal PER (Packet Error Rate) for the BUDS.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 less.
What is the best value for the CW min parameter on the
DS.11?
Setting the CW min parameter to 31 for heavy bi-directional
traffic loads will minimize the PER. Setting the CW min to 15
will improve performance for more uni-directional traffic
loads. CW min 7 should only be used for short-range pointto-point links, and 63 should be used for large, long-range
multi-point links.
Is the DS.11 compatible with other DS equipment from
other vendors?
Yes. However, for the outdoor bridges, interoperability can vary
from vendor to vendor and in some cases it may not operate if
the manufacturer’s implementation is not pure 802.11b. The
BU-DS.11/RB-DS.11 can operate at 1 and 2Mbps with legacy
802.11b DS equipment, and at 5.5Mbps and 11Mbps with
802.11b High Rate DS equipment. BreezeNET DS.11 units are
fully WI-FI compliant.
DS.11 FAQ
A-5
Collocation
How many BU-DS.11 or RB-DS.11 units can be
collocated on the same building or tower?
You can collocate up to 3 BU-DS.11 or RB-DS.11 units on
the same structure. Each unit is assigned to one of the nonoverlapping channels, 1, 6, or 11.
What is the antenna separation requirement for
collocating BU-DS.11 or RB-DS.11 units on the same
building or tower?
The antennas should be mounted at least 2 feet apart when
using UNI-16’s, 15 feet apart when using UNI-24’s, and 75
feet apart when using OMNI-8’s. Greater separation will
improve the link distance.
Can a Frequency Hopping network operate in the same
area as the BreezeNET DS.11?
Yes, but in a collocated network both products will suffer
some a decrease in performance. The degree of performance
loss depends on network utilization. For example, the higher
the utilization of the Frequency Hopping network, the higher
the level of impact on the Direct Sequence (DS.11) network,
and vice versa. Typically, in light to moderately utilized
networks, the performance loss is not significant.
A-6
BreezeNET DS.11 Series User’s Guide
Can I use DS.11 Bridges to feed a Frequency Hopping
distribution point?
Yes, bandwidth sharing between the Direct Sequence and
Frequency Hopping products can be minimized if the
network is designed using cross-polarized directional
antennas with as much spatial separation as possible.
Contact technical support for more information.
DS.11 FAQ
A-7
Performance
What is the throughput of the DS.11?
The BU-DS.11/RB-DS.11 bridge link typical performance is
4.2Mbps using TCP and 6.2Mbps using UDP. For long-range
links, the performance drops by about 5%.
What if the DS.11 link experiences interference?
If interference is affecting the DS.11 link, one of the other
channels may be selected to operate away from the frequency
of the interference. Also, physically re-locating the antennas
may help.
What is the typical latency of a BU-DS.11/RB-DS.11?
A point-to-point link would realize about 3mS latency.
BreezeNET DS.11 Series User’s Guide
A-8
Firmware
Can the BU-DS.11/RB-DS.11 firmware be upgraded?
Yes, the firmware in the BU-DS.11/RB-DS.11 is stored in
flash and is 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?
No, the TFTP server in the BU-DS.11/RB-DS.11 requires the
SNMP write community name (password) to perform an
upgrade.
Can the firmware flash be corrupted when upgrading to
a new version?
Yes, if the TFTP file transfer is interrupted during a flash
update the firmware may be corrupted. The DS.11 has a
backup flash, which contains the previous version for
firmware. If the primary flash is corrupt, then the backup is
automatically used to return the unit to an operating state.
When does the back up flash image get upgraded?
After completing a firmware upgrade, the backup flash
containing the old firmware version is overwritten with the
new version on the new power on cycle.
Can DS.11 firmware be downgraded?
Yes, an earlier version of firmware can overwrite a newer
version.
DS.11 FAQ
A-9
Can the previous version of firmware be kept?
The previous version of firmware cannot be kept on the
DS.11 itself, but can be stored on your PC and loaded if
needed.
BreezeNET DS.11 Series User’s Guide
A-10
Configuration
Can the regulatory domain (country) of a DS.11 unit be
changed?
No. The regulatory domain is factory set.
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.11 unit be returned to factory default
settings?
There are two ways. One way is to use the Default button on
the Station Control Tab in the DS.11 Configuration Utility.
The other is to press and hold the reset button on the back
of the unit while powering on the unit. Remember that all
settings including IP addresses will be lost when setting
defaults.
DS.11 FAQ
A-11
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 (BiDirectional 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?
No. The PI-CAT5 is specifically for the BreezeNET PRO.11
units only. The voltage is not the same between the two
devices.
BreezeNET DS.11 Series User’s Guide
A-12
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?
No, the DS.11 does not offer out-of-band management, such
as a serial port. The DS.11 is managed in-band only via the
DS.11 Configuration Utility or SNMP.
What installation and site survey tools are available for
BU-DS.11/RB-DS.11?
The DS.11 comes with a Windows based manager utility.
With this utility you can configure link parameters and
monitor signal quality and RSSI (received signal strength
indication). Optimizing antenna alignment is done using the
signal quality and RSSI display. Any computer on the
network can use this utility to manage the BU-DS.11/RBDS.11.
Preparing the Indoor to Outdoor Cable
B-1
Appendix B
The Indoor-to-Outdoor cable provides pin-to-pin connection
on both sides.
Figure B-1 shows the wire pair connections required for the
Indoor-to-Outdoor cable.
1 2 3 4 5 6 7 8
1+2
4+5
7+8
3+6
Figure B-1: Ethernet Connector Pin Assignments
BreezeNET DS.11 Series User’s Guide
B-2
The color codes used in cables supplied by Alvarion with
crimped connectors 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,
insert them into the appropriate pins and use the crimp tool
to crimp the connector. Make sure to do the following:
1. Remove as small a length as possible of the external
jacket. Verify that the external jacket is well inside the
service box to ensure good sealing.
2. Take back the shield drain wire before inserting the
cable into the RJ-45 connector, to ensure a good
connection with the connector’s shield after crimping.
Radio Signal Propagation
C-1
Appendix C
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 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
The electromagnetic wave is intercepted by the receiving
antenna, which converts it back to an RF signal. Ideally, this
RF signal is the same as that originally generated by the
transmitter. The original information is then demodulated
back to its original form.
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. The relation between dBm and Watts can be
expressed as follows:
PdBm = 10 x Log Pmw
For example:
30 dBm
1 Watt = 1000 mW; PdBm = 10 x Log 1000 =
100 mW; PdBm = 10 x Log 100 = 20 dBm
For link budget calculations, the dBm convention is more
convenient than the Watts convention.
Attenuation
Attenuation (fading) of an RF signal is defined as follows:
Radio Signal Propagation
C-3
Figure C-2: Attenuation of an RF signal
Pin is the incident power level before attenuation
Pout is the output power level after attenuation
Attenuation is expressed in dB as follows: PdB = -10 x Log
(Pout/Pin)
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. Path loss depends on:
♦ The distance between transmitting and receiving
antennas
♦ Line of sight clearance between the receiving and
transmitting antennas
♦ Antenna height
Free Space Loss
Attenuation of the electromagnetic wave while propagating
through space. This attenuation is calculated using the
following formula:
Free space loss = 32.4 + 20xLog(FMHz) + 20xLog(RKm)
F is the RF frequency expressed in MHz.
BreezeNET DS.11 Series User’s Guide
C-4
R is the distance between the transmitting and receiving
antennas (expressed in Km).
At 2.4 GHz, this formula is: 100+20xLog(RKm)
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.
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.
Radio Signal Propagation
C-5
Omni-directional Antenna
Radiates and receives equally in all directions in azimuth.
The following diagram shows the radiation pattern of an
omni-directional antenna with its side lobes in polar form.
Figure C-3: Radiation Pattern of an Omni Antenna - Side View
Figure C-4: Radiation Pattern of an Omni Antenna - Top View
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:
BreezeNET DS.11 Series User’s Guide
C-6
Figure C-5: Radiation Pattern of Directional Antenna
Antenna Beamwidth
The directiveness of a directional antenna. Defined as the
angle between two half-power (-3 dB) points on either side of
the main lobe of radiation.
System Characteristics
Receiver Sensitivity
The minimum RF signal power level required at the input of
a receiver for certain performance (e.g. BER).
EIRP (Effective Isotropic Radiated Power)
The antenna transmitted power. Equal to the transmitted
output power minus cable loss plus the transmitting
antenna gain.
Pout - Output power transmitted in dBm
Ct - Transmitter cable attenuation in dB
Gt - Transmitting antenna gain in dBi
Gr - Receiving antenna gain in dBi
Radio Signal Propagation
C-7
Pl - Path loss in dB
Cr - Receiver cable attenuation in dB
Si - Received power level at receiver input in dBm
Ps - Receiver sensitivity in dBm
Si = Pout - Ct + Gt - Pl + Gr - Cr
EIRP = Pout - Ct + Gt
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 = 32.4 + 20xLog(FMHz) + 20xLog(RKm) ≅ 110 dB
Si = EIRP - Pl + Gr - Cr = -82 dBm
In conclusion, the received signal power is above the
sensitivity threshold, so the link should work. The problem is
that there is only a 2 dB difference between received signal
power and sensitivity. Normally, a higher margin is desirable
due to fluctuation in received power as a result of signal
fading.
BreezeNET DS.11 Series User’s Guide
C-8
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 C-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.
Radio wave clear line of sight exists if a certain area around
the optical line of sight (Fresnel zone) is clear of obstacles. A
bad line of sight exists if the first Fresnel zone is obscured.
♦ 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.
Radio Signal Propagation
C-9
♦ Interference
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.
A radio wave clear line of sight exists if a defined area
around the optical line of sight (Fresnel Zone) is clear of
obstacles.
Fresnel Zone
The Fresnel zone is the area of a circle around the line of
sight.
The Fresnel Zone is defined as follows:
Figure C-7: Fresnel Zone
BreezeNET DS.11 Series User’s Guide
C-10
R = ½ √ xD
R: radius of the first Fresnel zone.
λ: wavelength (expressed in feet).
D: distance between sites (expressed in Km).
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.
Radio Signal Propagation
C-11