Controller-based wireless LAN fundamentals an end-to-end reference guide to design, deploy, manage, and secure 802.11 wireless networks
Controller-Based Wireless LAN Fundamentals An end-to-end reference guide to design, deploy, manage, and secure 802.11 wireless networks Jeff Smith Jake Woodhams Robert Marg As wired networks are increasingly replaced with 802.11n wireless connections, enterprise users are shifting to centralized, ne...
| Autores principales: | , , |
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| Autor Corporativo: | |
| Otros Autores: | , , |
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Indianapolis, Ind. :
Cisco Press
c2011
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| Edición: | 1st edition |
| Colección: | Fundamentals
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| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009629141106719 |
Tabla de Contenidos:
- Cover
- Contents
- Introduction
- Chapter 1 The Need for Controller-Based Wireless Networks
- Why Wireless LAN Controllers Were Created
- Why Wireless LAN Controllers Were Created
- Controller-Based WLAN Functional and Elemental Architecture
- Autonomous AP Issues and the WLC Remedy
- Problem: WLAN APs Are Difficult to Deploy
- Problem: WLANs Are Not Secure
- Problem: Infrastructure Device Configuration and Scaling
- Problem: Autonomous AP Costs for Configuring Each AP
- Problem: Autonomous AP Costs for Keeping Each AP's Software Up to Date
- Problem: RF Expertise and Configuration Challenges
- Mobility Applications Enabled by Controller-Based WLANs
- WLANs Do Not Provide the Performance and Robustness Needed for Use as a Primary Access Network
- Summary
- Chapter 2 Wireless LAN Protocols
- Understanding the Relevant Standards
- Wi-Fi Alliance
- Cisco Compatible Extensions
- IETF
- The Physical Layer
- Physical Layer Concepts
- CAPWAP
- CAPWAP Versus LWAPP
- CAPWAP Protocol Fundamentals
- CAPWAP Terminology
- CAPWAP Control Messages
- CAPWAP Data Messages
- CAPWAP State Machine
- CUWN Implementation of the CAPWAP Discovery
- CAPWAP Transport
- CAPWAP MAC Modes
- Split MAC Mode
- Local MAC Mode
- Summary of CAPWAP
- Packet Flow in the Cisco Unified Wireless Network
- CAPWAP Control
- CAPWAP Data Path: Centrally Bridged Traffic
- CAPWAP Data Path: Locally Bridged Traffic
- Summary of Packet Flow
- Summary
- References
- Chapter 3 802.11n
- IEEE 802.11n Standard
- 802.11n MAC
- Other 802.11 Standards Used with 802.11n
- Frequency Bands Supported by 802.11n
- Antenna Arrays
- Transmit Beam Forming (TxBF)
- Beam Steering
- Spatial Multiplexing
- Transmit Diversity
- Multiple Input, Multiple Output (MIMO)
- Multipath
- MIMO Nomenclature
- Receiver Diversity
- Branch Selection Diversity.
- Branch-Combining Diversity
- Diversity Antenna Array, Type, Orientation, and Spacing
- Transmit Beam-Forming Types
- Legacy Beam Forming
- Implicit Beam Forming
- Explicit Beam Forming
- MIMO Antenna Array Coverage and Placement
- Coding
- Binary Convolutional Coding (BCC)
- Low-Density Parity Checking (LDPC)
- HT PHY and Operation
- HT Mixed
- HT-Greenfield Format
- Channel Bonding/40-MHz-Wide Channels
- Protection
- Power Management
- Packet Aggregation
- Bursting/Block ACK (BACK)
- Short Guard Interval (GI)
- Reduced Inter-Frame Spacing (RIFS)
- Reverse Direction Protocol (RDP)
- Modulation and Coding Schemes (MCS)
- Configuration Requirements to Obtain HT Rates
- Predicting 802.11 Link Performance
- Summary
- Chapter 4 Cisco Unified Wireless LAN Security Fundamentals
- Understanding WLAN Security Challenges
- Vulnerabilities Inherent to the Radio Transmission Medium
- Physical Containment Problem
- Unlicensed Radio Spectrum Problem
- Vulnerabilities Inherent to the Standards Definitions
- Authentication and Encryption Weaknesses
- Unauthenticated Management Frames
- Vulnerabilities Inherent to Mobility
- Misconfigured Wireless Devices and Clients
- Rogue Access Points and Devices
- Readily Available Profiling and Attack Tools
- Addressing the WLAN Security Challenges
- Background on Strong Authentication and Privacy
- How WEP Encryption Works
- How WEP Is Broken
- 802.11 Authentication
- Addressing the Strong Authentication and Privacy Challenges
- Authentication Framework
- Authentication Algorithm
- Data Privacy and Integrity
- Alternative Approaches to Authentication and Data Privacy
- Rogue Access Point Detection and Wireless Intrusion Prevention
- Secure Management and Security Policies
- Summary
- References
- Chapter 5 Design Considerations
- 100 Percent Wireless Access Layer.
- Client Device Power
- RF Vulnerability
- Volume of Network Traffic
- Increased and Difficult WLAN Coverage Requirements
- Elevators
- External Bleed-Through
- Elevator Shaft Coverage
- Access Point Installed in Elevator Car
- Continuous Availability and Outage Planning
- Power Loss
- Equipment Failures: APs, WLCs, and Backhaul Network
- RF Interference
- Denial of Service Attacks
- Business Operation Continuity in the WLAN Era
- Power Conservation
- Flexibility
- WLAN Capacity
- Summary
- Chapter 6 Cisco Unified Wireless LAN Architectures
- Cisco Unified Wireless LAN Architecture Review
- Architectural Flexibility, Scalability, and Resiliency
- Architectural Flexibility
- Architectural Resiliency
- N:1 WLC Redundancy
- N:N WLC Redundancy
- N:N:1 WLC Redundancy
- Architectural Scalability
- Mobility
- Mobility Domains
- Campus Architectures
- Enterprise Wiring Closet Deployment
- Enterprise Distribution Layer Deployment
- Data Center or Services Block Deployments
- Campus HREAP
- Branch Architectures
- Distributed Branch Controller Placement
- Centralized Controller Placement with HREAP
- Office Extend AP (OEAP)
- Summary
- Chapter 7 Troubleshooting
- Tools for Troubleshooting 802.11 Wireless Networks
- Wireless LAN Controller Command-Line Interface
- Wireless Control System (WCS)
- Wireless Protocol Analyzer
- Spectrum Analyzers
- Isolating Issues on the Cisco Unified Wireless Network
- Protocol/Network Issues
- LWAPP/CAPWAP Discovery Process
- Troubleshooting the LWAPP CAPWAP Discovery Process
- Network Considerations
- Client Troubleshooting
- Troubleshooting Client Issues Using the WLC CLI
- Troubleshooting Client Issues Using WCS
- Common Client Problems and Solutions
- The Wireless Medium: Troubleshooting Performance-Related Issues
- Coverage and Interference Issues.
- Detecting, Isolating, and Solving Coverage Issues
- Detecting, Isolating, and Solving Interference Issues
- Troubleshooting Advanced Wireless LAN Services
- Voice over WLAN
- Voice over WLAN Challenges
- Troubleshooting VoWLAN
- Location Troubleshooting
- Troubleshooting Location Accuracy
- Summary
- Chapter 8 Introduction to WCS
- Designing Wireless Networks with WCS
- WCS Requirements
- WCS Interface
- WCS Monitoring
- Maps
- Controllers and AP Monitor
- Client Monitoring
- WCS Reporting
- WCS Configuration
- Controller Configuration Templates
- WCS Configuration and Template Auditing
- AP Configuration Templates
- WCS Services
- WCS Administration
- Role-Based Access Control (RBAC)
- WCS Virtual Domains
- WCS License Center
- Additional Benefits of WCS: Planning and Calibration Tools
- WCS Planning
- WCS Calibration
- Summary
- Chapter 9 Next-Generation Advanced Topics: Multicast
- Multicast
- Multicast Definition
- Multicast Addressing
- Multicast Forwarding
- Multicast Distribution Trees
- Protocol Independent Multicasting (PIM)
- IGMP
- Multicast Configuration in the CUWN
- Access Point-to-Client Delivery
- Client-to-Access Point Delivery
- Enabling Multicast on a Cisco WLAN Controller
- MGIDs
- Multicast Mobility Messaging
- Enabling Multicast on a Cisco Router or Layer 3 Switch
- VideoStream
- Principles of VideoStream
- Multicast Reliability
- QoS
- Configuring VideoStream on the WLC
- Additional Design Recommendations
- Wireless Multicast Roaming
- Wireless CAPWAP Fragmentation
- All WLCs Have the Same CAPWAP Multicast Group Address
- WLC Placement
- Summary
- Index.
