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

3 Detailed Description
36 APCD-LM043-4.0
3.5.2 MAC Layer (Polling MAC)
EUM States
The LMS4000 900 MHz Radio Network data transmission is based on a WaveRider’s
patented polling algorithm, which takes advantage of patterns found in typical Internet usage.
Based on the EUM’s subscribed grade of service and current traffic level, the Polling MAC
continuously adjusts the rate at which the EUM is polled. This process is illustrated in the EUM
State Diagram in Figure 22.
Figure 22 EUM State Diagram
When an EUM first powers up, it is in an unregistered state.
In the unregistered state, the EUM is not being polled and is therefore not passing traffic. As
outlined in EUM Registration on page 25, an unregistered EUM sends a registration_request
to the CCU. If the EUM is authorized in the CCU Authorization Table, it becomes registered/
disassociated.
In the registered/disassociated state, the EUM is still not being polled. But if the EUM has
traffic to send, it tries to associate with the CCU through the random access channel. The
EUM may also become associated iftheCCUhasapayloadtosendtotheEUM.Once
associated, the state of the EUM changes to active/associated.
In the active/associated state, the EUM is polled often, at a rate consistent with its subscribed
grade of service. If there is no traffic to or from an active/associated EUM for a defined interval
(typically set around 0.5 seconds), the state of the EUM changes to inactive/associated.
An inactive/associated EUM is polled less frequently than an active/associated EUM. If traffic
is resumed, the state of the EUM changes back to active/associated.Ifthereisnotrafficfora
longer defined interval (typically set around 2 seconds), the state of the EUM changes back to
registered/associated.
inactive/
associated
active/
associated
unregistered
registered/
disassociated
Random access for
EUM or payload for
EUM arrives at CCU
Traffic in either
direction
No traffic for ~0.5s
EUM is
not polled
EUM is
polled
often
EUM is
polled less
often
N
o
t
r
a
f
f
i
c
f
o
r
~
2
s
P
o
w
e
r
u
p
EUM is
not polled
regRequest/regResponse
From any state:
- deregRequest
- extended period with no traffic (~12h)
* Parameters are derived from the GOS
configuration file, and vary with EUM
grade of service.