Proxim Tsunami Multipoint Version 2.0 User manual

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Reference Manual
Tsunami Multipoint Version 2.0
P/N 63182v2r1
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Tsunami Multipoint Version 2.0 Reference Manual
Second Edition, December 2003
Copyright and Service Marks
Copyright © 2003 by Proxim Corporation. All rights reserved. No part of this manual may be reproduced without prior
written permission from Proxim Corporation.
The information contained in this manual is subject to change without notice. Proxim Corporation 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 this manual. Proxim Corporation makes no warranty of any kind with regard to
this manual or any equipment supplied with this manual, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose.
Tsunami™ is a registered product of Proxim Corporation.
Windowsis a registered product of Microsoft Inc.
Other names are trademarks of their owners.
Y2K (Year 2000 Issue): All software supplied by and for Proxim Corporation products adhere to the four-(4) digit year
nomenclature as required for Year 2000 compliance.
Regulatory Notice
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 in a residential
installation. 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.
Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations.
Changes or modifications not expressly approved in writing by Proxim Corporation may void the user's authority to
operate this equipment.
This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this
device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
WARNING! This device must be professionally installed!
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Tsunami Multipoint Version 2.0 Reference Manual
Contents
About Tsunami Multipoint..........................................................................................................................................5
Chapter 1. System Overview.....................................................................................................................................6
System Overview and Radio Considerations.........................................................................................................6
Packet Routing Modes: IP Routing and Bridging ................................................................................................14
Wireline Interface.................................................................................................................................................15
VoIP Support .......................................................................................................................................................16
GPS Receiver ......................................................................................................................................................16
Base Station Configuration Software and Subscriber Utility ................................................................................16
Chapter 2. Ethernet (MAC) Bridging Mode ............................................................................................................17
MAC Bridging Filtering .........................................................................................................................................17
Static Entries........................................................................................................................................................18
Limitations of the Bridging Mode..........................................................................................................................18
VLAN Switching – The PMP Implementation.......................................................................................................19
SU VLAN Filtering................................................................................................................................................22
Chapter 3. IP Routing Mode ....................................................................................................................................25
ARP Tables..........................................................................................................................................................26
Access Modes .....................................................................................................................................................27
Wireless Link Packets Destined for Local Subnet IP Addresses .........................................................................28
Wireless Link Packets Destined for Other Than Local Subnet: RIP Disabled.....................................................28
IP Routing Deployment with RIP Disabled...........................................................................................................29
Packet Routing and RIP.......................................................................................................................................32
Routing Mode Features Not Supported ...............................................................................................................37
Chapter 4. Active Interference Rejection ...............................................................................................................38
Overview..............................................................................................................................................................38
Interference Rejection Technologies ...................................................................................................................39
Planning Ahead with Tsunami Multipoint .............................................................................................................40
Technical Fundamentals......................................................................................................................................41
We improve, at all modulation modes, the carrier-to-interference ratio by 22 dB.Operation................................42
Operation .............................................................................................................................................................43
Interference Rejection Command Summary ........................................................................................................46
Chapter 5. Base Station Configuration Software and Subscriber Utility ............................................................47
System Requirements..........................................................................................................................................47
Removing the Previous BSU Console Version ....................................................................................................48
Installing Configuration Software Version 2.0 ......................................................................................................48
Multi-BSU Configuration Software Version 2.0 ...................................................................................................50
Base Station Configuration Software Version 2.0 ...............................................................................................53
Subscriber Utility Software...................................................................................................................................54
SU Utility Operation .............................................................................................................................................55
Using the Subscriber Utility for Antenna Pointing ................................................................................................59
Chapter 6. Advanced Configuration Options ........................................................................................................61
Multi-Sector Mode................................................................................................................................................61
Setting Ethernet Frame Type Filtering (EtherMode) ............................................................................................67
Configuring for IP Multicasting .............................................................................................................................67
Voice over IP (VoIP) ............................................................................................................................................67
Choosing the Priority Connection Bandwidth.......................................................................................................68
Chapter 7. Command Reference.............................................................................................................................76
BSU Commands for Configuring and Monitoring the BSU...................................................................................76
BSU Commands for Configuring and Monitoring the SU .....................................................................................77
SU Commands for Configuring and Monitoring the SU........................................................................................77
Command Format................................................................................................................................................77
Valid IP/Gateway Addresses ...............................................................................................................................79
Base Station Configuration Commands ...............................................................................................................79
BSU Commands for Configuring the SU’s from the BSU.....................................................................................96
SU Commands for Configuring and Monitoring SUs..........................................................................................104
Appendix A. Troubleshooting...............................................................................................................................111
Troubleshooting Data Stream Errors and Interference ......................................................................................112
Counteracting and Evaluating Interference........................................................................................................113
Appendix B. Technical Specifications .................................................................................................................114
Contents 3
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Tsunami Multipoint Version 2.0 Reference Manual
Burst-Rate Limit .................................................................................................................................................114
Downlink/Uplink Throughput ..............................................................................................................................114
Frequency Plans................................................................................................................................................114
Tx Power............................................................................................................................................................114
Antenna .............................................................................................................................................................115
Receiver Sensitivity ...........................................................................................................................................115
Maximum Distance Between Base Station and Subscriber Unit........................................................................115
System...............................................................................................................................................................115
Standards Compliance and Interfaces ...............................................................................................................116
Configuration and Management.........................................................................................................................116
Power/Environment Safety ................................................................................................................................116
Physical Dimension ...........................................................................................................................................117
Installation Details..............................................................................................................................................117
Optional Accessories .........................................................................................................................................117
Tsunami Multipoint Version 2.0 BSU Models.....................................................................................................117
Tsunami Multipoint Version 2.0 SU Models .......................................................................................................118
Declaration of Conformity ..................................................................................................................................118
Appendix C. Technical Support............................................................................................................................119
Warranty ..................................................................................................................................................................120
1 YEAR LIMITED EQUIPMENT WARRANTY ...................................................................................................120
Figures
Figure 1. Wide Coverage, High Capacity TCP/IP Network ........................................................................ 6
Figure 2. Single Frame ............................................................................................................................... 8
Figure 3. Model of the PMP Network ....................................................................................................... 14
Figure 4. SU Filters in Bridging Mode ...................................................................................................... 17
Figure 5. PMP VLAN Implementation ...................................................................................................... 21
Figure 6. VLAN Tagging Support in PMP Network ..................................................................................22
Figure 7. Multiple VLAN IDs at an Individual SU...................................................................................... 23
Figure 8. BSU/SU Connection by Switch ................................................................................................. 25
Figure 9. Proxy for Remote Devices Residing in the Same Subnet......................................................... 29
Figure 10. Network Diagram Example 1 Configuration Settings............................................................. 31
Figure 11. Sample Campus Networking Layout....................................................................................... 32
Figure 12. Sector Acting as a Virtual Router in IP Routing Mode ............................................................ 33
Figure 13. Network Diagram – Example 2 ............................................................................................... 36
Figure 14. Rejection to Linear Polarized Interference.............................................................................. 41
Figure 15. intlog Example......................................................................................................................... 45
Figure 16. Multi-BSU Console .................................................................................................................. 63
Figure 17. Connect To Setup Window ..................................................................................................... 64
Figure 18. Fresnel Zones ....................................................................................................................... 115
Tables
Table 1 Maximum Burst Rates ................................................................................................................... 7
Table 2 Expected Ethernet Frame Throughputs (Aggregate) .................................................................... 8
Table 3 Expected Standard and Optional FTP Performance..................................................................... 9
Table 4 Standard and Optional Frame Structure ....................................................................................... 9
Table 5 Frame Durations............................................................................................................................ 9
Table 6 Center Channel Frequencies ...................................................................................................... 11
Table 7 Network Diagram Example 2 Configuration Settings .................................................................. 36
Table 8 Carrier to Interference Improvement Using A.I.R. .......................................................................42
Table 9 Required VoIP Data Rates for Various Codecs .......................................................................... 69
Table 10 Selection for T1/E1 .................................................................................................................... 70
Table 11 Maximum VoIP Connections per SU by VoIP Bandwidth ......................................................... 72
Table 12 Maximum VoIP Connections per SU due to Packet Rate Limitations....................................... 73
Table 13 Maximum Number of Simultaneous Calls per BSU .................................................................. 74
Table 14 Max Simultaneous Calls per BSU due to Packet Processing Limitations................................. 75
Contents 4
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Tsunami Multipoint Version 2.0 Reference Manual
About Tsunami Multipoint
Tsunami Multipoint is a point-to-multipoint outdoor wireless system offering a high capacity alternative to
wired data networks.
Using IP packet radio transmitters, standard Ethernet interfaces, and an easy-to-deploy design, the Tsunami
Multipoint system enables high-speed network connections to multiple Ethernet switches, routers or PCs
from a single location. With Tsunami Multipoint, you can avoid the delays and costs associated with wired
connections such as DSL, cable modems, and leased T1/E1 lines.
Tsunami Multipoint systems consist of one or more Subscriber Units (SU) that communicates with a Base
Station Unit (BSU) to provide high-performance wireless network connections.
The following documents comprise the Tsunami Multipoint documentation set.
▪The Tsunami Multipoint BSU Quick Install provides just enough information for the experienced
professional to install the Tsunami Multipoint BSU.
▪The Tsunami Multipoint SU Quick Install provides just enough information for the experienced
professional to install the Tsunami Multipoint SU.
▪The Tsunami Multipoint Installation Guide provides detailed installation information for the less
experienced professional to install and initially configure the Tsunami Multipoint system. If you are
uncertain about any of the procedures in the Quick Install, refer to this document on the Tsunami
Multipoint CD.
▪The Tsunami Multipoint Reference Manual provides conceptual, advanced configuration, and command
reference information about the Tsunami Multipoint system. See the Reference Manual for information
about:
º Routing modes
º Active Interference Rejection (A.I.R.)
º Priority Queuing
º Advanced Configuration Options
º Command Reference
º Troubleshooting
About Tsunami Multipoint 5
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Tsunami Multipoint Version 2.0 Reference Manual
Chapter 1. System Overview
A Tsunami Multipoint system is comprised of one-to-six Base Station Units (BSUs) and associated
Subscriber Units (SUs) that comprise a cell. Each BSU communicates with its associated SUs in its sector.
Considered alone, the BSUs and SUs essentially function as radios. When configured together and attached
to network segments separated over some distance with clear line of sight, they provide a wide-coverage,
high-capacity TCP/IP network that transfers IP traffic between the cell hub and its multiple SUs.
Over this network, users can support services, such as the following (as well as other applications):
▪Providing network connectivity between buildings or campuses (Virtual Private Network (VPN) scenario)
▪Establishing high-speed connections between Internet Service Providers (ISPs) and their customers
▪Providing surveillance over remote sites
Figure 1. Wide Coverage, High Capacity TCP/IP Network
Note: Uplink and downlink are also referred as inbound (IB) and outbound (OB), respectively,
throughout this document.
SYSTEM OVERVIEW AND RADIO CONSIDERATIONS
Communication
Each SU communicates with a BSU in a coordinated manner so that all SUs associated with the BSU have
an equal amount of time to coordinate their data needs in both the uplink and downlink directions. The
Tsunami Multipoint system uses a master-slave relationship with the BSU being the master and the SUs
being the slaves. The BSU broadcasts to the SUs and all SUs capable of communicating at the BSU burst
rate tune in. When an SU requires bandwidth, it makes a request to the BSU and the BSU, in turn, assigns a
time period for the SU to transmit during the uplink portion of the frame. This bandwidth request and
scheduling is handled on a frame-by-frame basis giving users the impression that they are in constant
communication with their BSUs.
Chapter 1. System Overview 6
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Tsunami Multipoint Version 2.0 Reference Manual
A single cell of six 60-degree sectors can communicate in all directions (360°). Each sector, consisting of a
single BSU and associated SUs (a single BSU can communicate with up to 1,023 SUs ), can be configured
to communicate at a maximum burst rate of 60 Mbps. Consequently, a single cell consisting of six BSUs has
a maximum throughput of 360 Mbps.
Data Rate
SUs are available in versions with maximum burst rates of 60 Mbps and 20 Mbps. BSUs are available in 60
Mbps or 20 Mbps versions. These data rates are achieved by using a combination of different modulation
and coding schemes. A BSU or SU can operate at its maximum burst rate or at any lower burst rate. For
example, a 60 Mbps BSU can be configured to operate at 20 Mbps, 30 Mbps, 40 Mbps, or 60 Mbps. If set
to operate at 20 Mbps, all SUs can communicate with it . A 60 Mbps BSU configured to 40 Mbps can
communicate with SUs capable of 40 Mbps or faster, however, they could not communicate with SUs having
a maximum burst rate of 20 Mbps.
Table 1 Maximum Burst Rates
Product Burst-Rate Limit Also Supports
Base Station Unit 60 Mbps
20 Mbps
20-40 Mbps burst rates
Subscriber Unit 60 Mbps
20 Mbps
20-40 Mbps burst rates
Note: This table describes the product upgrade/compatibility policy. The BSU and SU must use the same
burst rate within a sector to achieve wireless communication. If an SU cannot operate at the speed
at which the BSU is broadcasting, it displays a link status of “outbound detected.”
Partitioning Uplink and Downlink Data Rates
The Tsunami Multipoint system operates using a frame-structured Time Division Duplexing (TDD). TDD
means both the uplink and downlink operate on the same frequency at different times. At the beginning of a
frame, data is broadcast from the BSU to all the SUs in a sector. After the downlink completes, the SUs
transmit data on the uplink to the BSU. All the SUs share the uplink and transmit at different times. A single
frame is shown in the following figure:
Chapter 1. System Overview 7
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Tsunami Multipoint Version 2.0 Reference Manual
Rx-to-Tx
Guard
Interval
Tx-to-Rx
Guard
Interval
Transmit
Portion
of
Frame
Receive
Portion
of
Frame
Single
Frame
Slot 0
Slot 1 Slot 2
Slot N-1
. . . .
Slot N
Slot N+1
Slot M
. . . .
Figure 2. Single Frame
The BSU determines which SU is to transmit at what instant in time. The entire frame consists of a fixed
number of slots (the exact number depends upon the data rate used (such as 30 Mbps, 40 Mbps, or 60
Mbps). You can use the firstInboundSlot command (on page 81) to set the ratio of downlink-to-uplink
slots.
When setting the ratio, be aware that:
▪Not all ratios are useable (see “firstInboundSlot” on page 81).
▪There is a possibility of BSU-to-BSU interference if different sectors have different ratios of uplink to
downlink traffic. All co-located BSUs should have the same ratio.
▪The uplink has slightly lower capacity than the downlink for the same number of assigned slots due to
link overhead. The following table provides expected throughputs for symmetrically configured links
(same number of uplink and downlink slots), measured at level 2.
Table 2 Expected Ethernet Frame Throughputs (Aggregate)
Burst Rate (Mbps) D/L Throughput (Mbps) Uplink Throughput (Mbps)
20 9 8
30 13.5 12
40 18 16
60 27 24
Chapter 1. System Overview 8
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Tsunami Multipoint Version 2.0 Reference Manual
Table 3 Expected Standard and Optional FTP Performance
Standard Optional
Burst Rate
Get, Mbps Put, Mbps Get, Mbps Put, Mbps
20 Mbps 9.541 8.375 8.945 7.850
30 14.3 10.0 11.8 12.3
40 19.0 10.0 17.8 14.5
60 28.4 9.975 26.8 15.1
Frame Duration Options
The default frame duration is 7.5 msec for all modulation types (burst rates).
Table 4 Standard and Optional Frame Structure
Standard Optional
Burst Rate
Slots/Frame Length, ms Slots/Frame Length, ms
20 Mbps 8 7.5 8 8
30 12 7.5 8 6
40 16 7.5 8 4
60 24 7.5 12 4
The product also has an optional frame duration mode that can be enabled with the setFrameDuration
command. Besides its modified frame duration, the Optional Mode uses longer guard intervals.
The following table contains the frame durations for this optional mode (as a function of burst rate).
Table 5 Frame Durations
Burst Rate Frame Duration in Optional Mode (msec)
20 8
30 6.024
40 4
60 4
Chapter 1. System Overview 9
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