User's Manual
Table Of Contents
- Contents
- Contents v
- Figures ix
- Tables xi
- Preface xv
- Appendix A Specifications 157
- Appendix B Factory Configuration 159
- Appendix C CommandLine Syntax 163
- Appendix D Antenna Guidelines 181
- Appendix E CCU/EUM Data Tables 183
- Appendix F Ping Commands 197
- Appendix G SNMP MIB Definitions 199
- Appendix H Operating Statistics 223
- Appendix I IP Plan — Example 241
- Appendix J Acronyms and Glossary 253
- Index 261
- Figures
- Tables
- Preface
- 1 Introduction
- 2 Quick Startup
- 3 Detailed Description
- 4 IP Network Planning
- 5 Radio Network Planning
- 6 Installation/Diagnostic Tools
- 7 Configuring the CCU
- 7.1 CCU and EUM Serial Number, MAC Address, and Station ID
- 7.2 Setting the CCU Password
- 7.3 Configuring the CCU RF Parameters
- 7.4 Configuring CCU IP Parameters
- 7.5 Configuring DHCP Relay
- 7.6 Configuring Port Filtering
- 7.7 Configuring the SNTP/UTC Time Clock
- 7.8 Configuring SNMP
- 7.9 Adding EUMs to the Authorization Table
- 8 Configuring the EUM
- 9 Installing the EUM
- 9.1 Before you Start the EUM Installation
- 9.2 Other EUM Programming Considerations
- 9.3 Installation Overview
- 9.4 Installation Procedures
- 9.4.1 Opening the Box
- 9.4.2 Turning off the End-user’s Cordless Phones
- 9.4.3 Choosing a Location for the EUM and Antenna
- 9.4.4 Connecting the EUM Components
- 9.4.5 Conducting a Preliminary Check of the EUM
- 9.4.6 Positioning the Antenna
- 9.4.7 Mounting the Antenna
- 9.4.8 Connecting the End-user’s PC
- 9.4.9 Obtaining Valid IP Addresses for the End-user’s PC
- 9.4.10 Testing the Data Link
- 9.4.11 Configuring the Browser Application
- 9.4.12 Completing the Installation
- 9.4.13 Baselining the Installation
- 9.4.14 Troubleshooting
- 10 Maintaining the Network
- 11 Monitoring the Network
- 12 Troubleshooting
- 13 Specialized Applications
- Appendix A Specifications
- Appendix B Factory Configuration
- Appendix C CommandLine Syntax
- Appendix D Antenna Guidelines
- Appendix E CCU/EUM Data Tables
- Appendix F Ping Commands
- Appendix G SNMP MIB Definitions
- MIB-II Elements Supported from RFC-1213
- WaveRider CCU Enterprise MIBs
- CCU Base MIB
- CCU General Information Group
- CCU Radio Configuration Group
- CCU Radio Statistics Group
- CCU Radio General Statistics Group
- CCU Radio Driver Statistics Group
- CCU Radio MAC Statistics Group
- CCU Ethernet Statistics Group
- CCU Modem Information MIB
- CCU Registration Information MIB
- CCU Registration Table
- CCU Authorization Information MIB
- CCU Authorization Table
- CCU RFC MIB-II Traps
- WaveRider EUM Enterprise MIBs
- EUM RFC MIB-II Traps
- Appendix H Operating Statistics
- Appendix I IP Plan — Example
- Appendix J Acronyms and Glossary
- Index

11 Monitoring the Network
APCD-LM043-4.0 133
As with the CCU transmit statistics, the following sample calculations can be made using the
sample data from Table 29:
Total number of desired payloads = B + C = 44,718 + 2 = 44,720
This is also equal to:
(txPayloads1Ok + txPayloads2Ok + txPayloads3Ok + txPayloads 4Ok +
txPayloadsFailRetry) = (36,889 + 5,216 + 1,489 + 553 + 573) = 44,720
NOTE: Due to real-time issues (the fact that at any given time, some
packets are being processed or queued), the numbers frequently
differ by the number of packets that are in queues.
NOTE: In the case of the EUM, most payloads are sent in response to
directed polls; however, a small number of payloads are sent in
response to random access polls.
The percentage of payloads that are delivered on the first transmission
= txPayloads1Ok / (B + C) = 36,889 / 44,720 = 82.5%
Similarly, the percentage of payloads that are not delivered on the first transmission but are
delivered on the second transmission
= txPayloads2Ok / (44,720 - 36,889) = 5,216 / 7,831 = 11.7%
The percentage of payloads that are not able to be delivered
= 573 / 44,720 = 1.3%
Since there are no broadcast or control payloads, the calculation of the Retransmission Rate
is fairly straightforward:
Retransmission Rate = (1 - desired payloads/actual payloads) x 100
=(1-tx Data Payloads / txPayloads) x 100
= (1 - 44,718 / 56,293) x 100
= 21%
11.3.2 EUM Receive Statistics
Perhaps the most important receive statistic is the Receive Signal Strength Indicator (RSSI),
which gives a relative indicator of receive signal strength. Using the calibration table in the
PCF table, described in Permanent Configuration File (CCU and EUM) on page 193, RSSI
can be used to determine the true receive signal level, in dBm. It is important to monitor this
statistic.
NOTE: Since the EUM can receive packets that are destined for other
EUMs, the EUM receive statistics are not as useful as the CCU
receive statistics. They are useful when the EUM is the only EUM
that is active, which is seldom the case after more than one EUM
have been activated.