Packet Guide to Routing and Switching. Exploring the Network Layer - Helion
ebook
Autor: Bruce HartpenceISBN: 978-14-493-1524-5
stron: 246, Format: ebook
Data wydania: 2011-08-25
Księgarnia: Helion
Cena książki: 59,42 zł (poprzednio: 69,09 zł)
Oszczędzasz: 14% (-9,67 zł)
Tagi: Protokoły
Go beyond layer 2 broadcast domains with this in-depth tour of advanced link and internetwork layer protocols, and learn how they enable you to expand to larger topologies. An ideal follow-up to Packet Guide to Core Network Protocols, this concise guide dissects several of these protocols to explain their structure and operation.
This isn’t a book on packet theory. Author Bruce Hartpence built topologies in a lab as he wrote this guide, and each chapter includes several packet captures. You’ll learn about protocol classification, static vs. dynamic topologies, and reasons for installing a particular route.
This guide covers:
- Host routing—Process a routing table and learn how traffic starts out across a network
- Static routing—Build router routing tables and understand how forwarding decisions are made and processed
- Spanning Tree Protocol—Learn how this protocol is an integral part of every network containing switches
- Virtual Local Area Networks—Use VLANs to address the limitations of layer 2 networks
- Trunking—Get an indepth look at VLAN tagging and the 802.1Q protocol
- Routing Information Protocol—Understand how this distance vector protocol works in small, modern communication networks
- Open Shortest Path First—Discover why convergence times of OSPF and other link state protocols are improved over distance vectors
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Spis treści
Packet Guide to Routing and Switching. Exploring the Network Layer eBook -- spis treści
- Packet Guide to Routing and Switching
- Dedication
- SPECIAL OFFER: Upgrade this ebook with OReilly
- Preface
- Audience
- Contents of This Book
- Conventions Used in This Book
- Using Code Examples
- Safari Books Online
- How to Contact Us
- Content Updates
- September 28, 2012
- Acknowledgments
- 1. Routing and Switching Strategies
- Switching: Forwarding and Filtering Traffic
- Forwarding Based on MAC Addresses
- Routing: Finding Paths
- Routing Devices
- Static Routes
- Digging a Little DeeperCommon Mistakes
- Default Routes
- Dynamic Routes
- Routing Protocols
- Single versus multipath
- Interior versus exterior
- Flat versus hierarchical
- Link state versus distance vector
- Choosing or Installing a Route
- Prefix length
- Administrative distance
- Metric
- Routing Loops
- Discard or Null Routing
- IPv6
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Interconnected Switches and SATs
- Activity 2Static Routing Topology
- Activity 3Convert to Default Routes
- Activity 4Routing Loop
- Activity 5Null Route
- Switching: Forwarding and Filtering Traffic
- 2. Host Routing
- The Decision Process
- Case 1: Destination Is on the Same Network as the Source
- Case 2: Destination Is on a Different Network than the Source
- What If the Default Gateway Is Not Known?
- Host Routing Tables
- Addressing
- Tracking the Packets
- Case 1: Destination Is on the Same Network as the Source
- Case 2: Destination Is on a Different Network than the Source
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Build the Topology Depicted in Figure 2-2
- Activity 2Host Routing Table
- Activity 3ARP Tables
- Activity 4Following the Traffic
- Activity 5Addressing
- The Decision Process
- 3. Spanning Tree and Rapid Spanning Tree
- Why Are Loops Bad?
- The Structure of Spanning Tree BPDUs
- The Comparison Algorithm
- Some Definitions
- Spanning Tree Addressing
- Port States
- Spanning Tree Timers
- Hello
- Max age
- Forward delay
- The Operation of Spanning Tree
- Step 1Switch 1 Is Powered Up
- Step 2Switch 2 Is Powered Up
- Step 3Switch 3 Is Powered Up
- Step 4Creation of a Loop
- Spanning Tree Messages
- Problems with Spanning Tree
- Switch to Switch: A Special Case
- Cisco Improvements
- Portfast
- Uplinkfast
- Backbonefast
- VLANs and Spanning Tree
- The Rapid Spanning Tree Protocol
- The Operation of RSTP
- Alternate and backup blocked ports
- The Operation of RSTP
- Security
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Capture of a BPDU
- Activity 2BPDU Address Analysis
- Activity 3Looping the Switch Back to Itself
- Activity 4Looping Switches Together
- Activity 5Removing the Loop
- 4. VLANs and Trunking
- Problem: Big Broadcast Domains
- What Is a VLAN?
- The Effect of VLANs
- VLAN Ports Do Not Need to be Continuous
- Types of VLANs
- Case 1DHCP
- Case 2No DHCP
- Solution: Dynamic VLANs
- VLANs Between Switches
- What is a Trunk?
- Trunking Protocol Standards
- IEEE 802.1Q
- Inter-switch link (ISL)
- Pruning
- Trunking Protocol Standards
- VLAN Design Considerations
- Security Considerations
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Setting Up a Local VLANs
- Activity 2VLANs and the SAT
- Activity 3What Can You See?
- Activity 4Basic Trunking
- 5. Routing Information Protocol
- Version 1 Versus Version 2
- Protocol Description
- Structure
- Basic Operation
- Timers
- Addressing
- Advanced Operation
- Split Horizon
- Poisoning
- Poison Reverse
- Triggered Updates
- Count to Infinity
- How Do I Get Off of My Network?
- RIP and Loops
- Security
- RIP and IPv6
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Build the Topology Depicted in Figure 5-28
- Activity 2Enable RIP on the Routers
- Activity 3Split Horizon
- Activity 4Loss of a Route
- Activity 5Timers
- 6. Open Shortest Path First
- Protocol Description
- Being Link State
- Structure and Basic Operation
- Hello
- DB Description
- Link state advertisement (LSA) header
- Link State Request
- Link State Update
- Link State ACK
- Timers
- Advanced Operation
- OSPF and IPv6
- Reading
- Summary
- Review Questions
- Review Answers
- Lab Activities
- Activity 1Build the Topology Depicted in Figure 6-23
- Activity 2Enable OSPF on the Routers
- Activity 3Tracing the Packet Flow
- Activity 4Changing Network Conditions
- Activity 5A Loop
- About the Author
- Colophon
- SPECIAL OFFER: Upgrade this ebook with OReilly
- Copyright