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Index
Ethernet Switches
Charles E. Spurgeon
Joann Zimmerman
Special Upgrade Offer
Preface
Conventions Used in This Book
Tip
Warning
Using Code Examples
Safari® Books Online
Note
How to Contact Us
Acknowledgements
Chapter 1. Basic Switch Operation
What an Ethernet Switch Does
Bridges and Switches
What Is a Switch?
Tip
Operation of Ethernet Switches
Transparent Bridging
Address Learning
Traffic Filtering
Frame Flooding
Broadcast and Multicast Traffic
Broadcast and multicast forwarding
Uses of broadcast and multicast
Combining Switches
Forwarding Loops
Spanning Tree Protocol
Spanning Tree Packets
Choosing a Root Bridge
Choosing the Least-Cost Path
Tip
Blocking Loop Paths
Spanning Tree Port States
Tip
Spanning Tree Versions
Switch Performance Issues
Packet Forwarding Performance
Switch Port Memory
Switch CPU and RAM
Switch Specifications
Tip
Chapter 2. Basic Switch Features
Switch Management
Simple Network Management Protocol
Packet Mirror Ports
Switch Traffic Filters
Warning
Managing switch filters
Virtual LANs
802.1Q VLAN Standard
Linking VLANs
802.1Q Multiple Spanning Tree Protocol
Quality of Service (QoS)
Chapter 3. Network Design with Ethernet Switches
Advantages of Switches in Network Designs
Improved Network Performance
Switch Hierarchy and Uplink Speeds
Tip
Tip
Uplink Speeds and Traffic Congestion
Tip
Tip
Multiple Conversations
Switch Traffic Bottlenecks
Hierarchical Network Design
Seven Hop Maximum
Network Resiliency with Switches
Spanning Tree and Network Resiliency
Cost and complexity of resiliency
Routers
Operation and Use of Routers
Routers or Bridges?
Advantages of bridges
Disadvantages of bridges
Advantages of routers
Disadvantages of routers
Chapter 4. Special-Purpose Switches
Multilayer Switches
Access Switches
Stacking Switches
Industrial Ethernet
Wireless Access Point Switches
Internet Service Provider Switches
Metro Ethernet
Data Center Switches
Data Center Port Speeds
Data Center Switch Types
Data Center Oversubscription
Data Center Switch Fabrics
Data Center Switch Resiliency
Chapter 5. Advanced Switch Features
Traffic Flow Monitoring
sFlow and Netflow
Power over Ethernet
Appendix A. Resources
Resources for Chapter 1
Bridging Standards
Ethernet Standards
OSI Model
Ethernet Bridging and the Spanning Tree Protocol
Switch Performance
Resources for Chapter 2
Switch Management
Resources for Chapter 3
Cisco Validated Design Guides
Layer 2 Network Failure Modes
Resources for Chapter 4
Resources for Chapter 5
Traffic Flow Monitoring
Power over Ethernet
Glossary
About the Authors
Colophon
Special Upgrade Offer
Ethernet Switches
Charles E. Spurgeon
Joann Zimmerman
Editor
Meghan Blanchette
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