User's Manual
Table Of Contents
- Chapter 1 Introduction
- Features and Benefits
- Transparent Ethernet Bridging with Advanced Filtering for Security and Network Reliability
- IP Routing with Advanced Filtering for Security
- SNMP Management
- SNMP Features
- SNMP Management
- IP-Router Features
- Encryption Features (Add-on Option)
- Wireless Multipoint Protocol
- Additional Functionality for SPEEDLAN 4100 & 4200
- Features
- Chapter 2 Quick Start
- System Description
- Package Contents
- Installation Steps
- Installation Diagram
- Polarizations on a Grid Antenna
- Chapter 3 Hardware
- Upgrading the Firmware
- Chapter 4 Overview of Configurator
- Installation and Setup
- Toolbar and Menus
- Chapter 5 Configuring SPEEDLAN 4100 & 4200
- General Setup
- Interface & Advanced Interface Setup
- The Setup Buttons
- Chapter 6 Bridging Setup
- Bridge Setup
- Chapter 7 Setting Up the IP Addresses (IP Host Setup)
- Part I - Quick Overview of IP Addressing
- Part II - Setting Up the IP Address
- Chapter 8 IP-Router Setup
- IP Routing Setup
- Chapter 9 SNMP Setup
- SNMP Setup
- Chapter 10 System Access Setup
- System Access Setup
- Chapter 11 SNMP Monitoring
- Remote Statistics
- Interface Monitor
- Ethernet-like Interface Monitor
- Campus PRC Station Entries
- 11Mb RF Interface
- SNMP Monitor
- IP Monitor
- IP/TCP/UDP Monitor
- ICMP Monitor
- Chapter 12 Tables
- System Information
- Bridge Learn Table
- IP ARP Table
- IP Route Table
- IP/TCP Connection Table
- IP/UDP Listener Table
- Local IP-Address Table
- Chapter 13 Analyzing Wireless Equipment
- Select Another Device
- Analysis Polling Interval
- Wireless Link Test
- Antenna Alignment
- Glossary for Standard Data Communications
- Glossary for Standard Data Communications
- Appendix Protocols & Ethernet Addresses
- Common Ethernet Protocols
- Common Ethernet Vendor Addresses
- Common Ethernet Multicast Addresses
- Common Ethernet Broadcast Addresses
SPEEDLAN 4100 & 4200 Installation and Operation User Guide
Glossary-16
Sidelobe
These are 20 dB lower than the main lobe, and it is critical from a performance standpoint that antennas are aligned with
respect to the main lobe. Failure to do so may cause the radio to be interfered with or the radio may interfere with other
systems.
Signal level
This is the value of the signal level at the receiving end of the transmission path.
Simple Network Management Protocol (SNMP)
The standard protocol for TCP/IP network management that has the most common worldwide use.
Site ID (Unique)
This is the alphanumeric site address given to the terminal by you (the user).
Spread Spectrum Technology (SST)
A method of encoding (with a PN code) a digital signal in a transmitter so as to spread it over a wide range of frequencies
so that the average signal power is close to the noise floor. The same code is known to the receiver and is used to decode
the signal. Keeping the code secret provides communications security.
Submask
This term allows you to mask section(s) (depending on the class specified) of the octets in the network address. Each octet
used in the subnet mask is assigned to a data link. The leftover octet(s) are assigned to the remaining nodes.
Subnet
This term allows you to create multiple networks within one Class A, B, or C network. Each data link (octet) contains its
own unique identifier also known as the subnet. Also, each node on the same data link must belong on the same subnet
as well.
Symbol Threshold
After a signal has been acquired, the acquisition algorithm in the spread-spectrum chip continues to run a cross-correla-
tion between the expected PN sequence and the received signal, but now uses the Symbol Threshold for comparison. If
the result of the cross-correlation drops below the Symbol Threshold, the signal is considered to have been lost, and the
algorithm begins trying to acquire the signal again.