Enterasys Networks RBT-4102 Chapter 4: Network Configuration

4-1

Chapter 4: Network Configuration

Wireless networks support a standalone configuration as well as an integrated

configuration with 10/100Mbps Ethernet LANs. The RoamAbout RBT-4102 also provides

bridging services that can be configured independently on either the 5 GHz or 2.4 GHz

radio interfaces.

Access points can be deployed to support wireless clients and connect wired LANs in the

following configurations:

• Ad hoc for departmental, SOHO or enterprise LANs

• Infrastructure for wireless LANs

• Infrastructure wireless LAN for roaming wireless PCs

• Infrastructure wireless bridge to connect wired LANs

The 802.11b and 802.11g frequency band which operates at 2.4GHz can easily

encounter interference from other 2.4 GHz devices, such as other 802.11b or 802.11g

wireless devices, cordless phones and microwave ovens. If you experience poor wireless

LAN performance, try the following measures:

• Limit any possible sources of radio interference within the service area

• Increase the distance between neighboring access points

• Decrease the signal strength of neighboring access points

• Increase the channel separation of neighboring access points (for example, up to three

channels of separation for 802.11b, or up to four channels for 802.11a, or up to five

channels for 802.11g)

Contents

Main Page i NOTICE ii COMPLIANCES RBT-4102, RBT-4102-BG, and RBT-4102-EU Federal Communication Commission Interference Statement IMPORTANT NOTE: FCC Radiation Exposure Statement iii Wireless 5 GHz Band Statements: Wireless 4.9 GHz Band Statement: Industry Canada - Class B RBT-4102-EU iv EC Conformance Declaration Countries of Operation & Conditions of Use in the European Community v Operation Using 5 GHz Channels in the European Community Countries of Operation & Conditions of Use in the Asia, Pacific, and Middle East Communities vi Operation Using 5 GHz Channels in the Asia, Pacific, and Middle East Community vii RBT-4102C and RBT-4102C-EU Federal Communication Commission Interference Statement IMPORTANT NOTE: FCC Radiation Exposure Statement Wireless 5 GHz Band Statements: viii RBT-4102C-EU Australia/New Zealand AS/NZS 4771 Japan Telec Approval EC Conformance Declaration ix Countries of Operation & Conditions of Use in the European Community x Operation Using 5 GHz Channels in the European Community Countries of Operation & Conditions of Use in the Asia, Pacific, and Middle East Communities xi Operation Using 5 GHz Channels in the Asia, Pacific, and Middle East Community EC-Konformittserklrung xii DECLARATION OF CONFORMITY IN LANGUAGES OF THE EUROPEAN COMMUNITY xiii xiv SAFETY COMPLIANCE Power Cord Safety Page Page xvii ENTERASYS NETWORKS, INC. FIRMWARE LICENSE AGREEMENT xviii xix xx xxi Page xxiii Table of Contents Preface xxiv xxv Preface Purpose Intended Audience Associated Documents xxvi Getting Help 1-1 Chapter 1: Introduction Introduction 1-2 Package Checklist Hardware Description Hardware Description 1-3 Rear Panel Introduction 1-4 Component Description Antennas External Antenna Connectors LED Indicators Hardware Description 1-5 Security Slot Console Port Page Page Page 2-1 Chapter 2: Hardware Installation Hardware Installation 2-2 2-3 Page 3-1 Chapter 3: Access Point Configuration Using the CLI Required Connections 3-2 Logging In Using the CLI 3-3 3-4 Using the CLI 3-5 3-6 Using Web Management 3-7 3-8 3-9 3-10 3-11 Page Page 3-14 4-1 Chapter 4: Network Configuration Network Configuration 4-2 Network Topologies Ad Hoc Wireless LAN (no Access Point) Network Topologies 4-3 Infrastructure Wireless LAN Network Configuration 4-4 Infrastructure Wireless LAN for Roaming Wireless PCs Network Topologies 4-5 Infrastructure Wireless Bridge Page A-1 Appendix A: Troubleshooting Diagnosing Access Point Indicators Page B-1 Appendix B: Cables and Pinouts Twisted-Pair Cable Assignments Cables and Pinouts B-2 10/100BASE-TX Pin Assignments Twisted-Pair Cable Assignments B-3 Straight-Through Wiring Crossover Wiring EIA/TIA568B RJ-45 Wiring Standard 10/100BASE-TXStraight-through Cable EIA/TIA568B RJ-45 Wiring Standard 10/100BASE-TXCrossover Cable Cables and Pinouts Console Port Pin Assignments Wiring Map for Serial Cable C-1 Appendix C: Specifications General Specifications Maximum Channels 802.11a 802.11b/g Modulation Type Network Configuration Operating Frequency AC Power Adapter Unit Power Supply Page C-4 Compliances Radio Signal Certification Safety Standards Sensitivity Sensitivity C-6 Transmit Power Operating Range C-7 Operating Range C-8 External Antennas External Antennas C-9 Page Index-1 Index A B C D