The one-stop guide to modern networking for every VMware® administrator, engineer, and architect
Now that virtualization has blurred the lines between networking and servers, many VMware specialists need a stronger understanding of networks than they may have gained in earlier IT roles. Networking for VMware Administrators fills this crucial knowledge gap. Writing for VMware professionals, Christopher Wahl and Steve Pantol illuminate the core concepts of modern networking, and show how to apply them in designing, configuring, and troubleshooting any virtualized network environment.
Drawing on their extensive experience with a wide range of virtual network environments, the authors address physical networking, switching, storage networking, and several leading virtualization scenarios, including converged infrastructure.
Teaching through relevant examples, they focus on foundational concepts and features that will be valuable for years to come. To support rapid learning and mastery, they present clear learning objectives, questions, problems, a complete glossary, and extensive up-to-date references.
Coverage includes:
. The absolute basics: network models, layers, and interfaces, and why they matter
. Building networks that are less complex, more modular, and fully interoperable
. Improving your virtual network stack: tips, tricks, and techniques for avoiding common pitfalls
. Collaborating more effectively with network and storage professionals
. Understanding Ethernet, Advanced Layer 2, Layer 3, and modern converged infrastructure
. Mastering virtual switching and understanding how it differs from physical switching
. Designing and operating vSphere standard and distributed switching
. Working with third-party switches, including Cisco Nexus 1000V
. Creating powerful, resilient virtual networks to handle critical storage network traffic
. Deploying rackmount servers with 1 Gb and 10 Gb Ethernet
. Virtualizing blade servers with converged traffic and virtual NICs
Christopher Wahl has acquired well over a decade of IT experience in enterprise infrastructure design, implementation, and administration. He has provided architectural and engineering expertise in a variety of virtualization, data center, and private cloud based engagements while working with high performance technical teams in tiered data center environments. He currently holds the title of Senior Technical Architect at Ahead, a consulting firm based out of Chicago.
Steve Pantol has spent the last 14 years wearing various technical hats, with the last seven or so focused on assorted VMware technologies. He is a Senior Technical Architect at Ahead, working to build better datacenters and drive adoption of cloud technologies.
Autorentext
Chris Wahl has acquired more than a decade of IT experience in enterprise infrastructure design, implementation, and administration. He has provided architectural and engineering expertise in a variety of virtualization, data center, and private cloud-based engagements while working with high performance technical teams in tiered data center environments. He currently holds the title of Senior Technical Architect at Ahead, a consulting firm based out of Chicago. Chris holds well over 30 active industry certifications, including the rare VMware Certified Design Expert (VCDX #104), and is a recognized VMware vExpert. He also works to give back to the community as both an active "Master" user and moderator of the VMware Technology Network (VMTN) and as a Leader of the Chicago VMware User Group (VMUG). As an independent blogger for the award winning "Wahl Network," Chris focuses on creating content that revolves around virtualization, converged infrastructure, and evangelizing products and services that benefit the technology community. Over the past several years, he has published hundreds of articles and was voted the "Favorite Independent Blogger" by vSphere-Land for 2012. Chris also travels globally to speak at industry events, provide subject matter expertise, and offer perspectives as a technical analyst.
Steve Pantol has spent the last 14 years wearing various technical hats, with the last seven or so focused on assorted VMware technologies. He holds numerous technical certifications and is working toward VCDX-if only to stop Wahl from lording it over him. He is a Senior Technical Architect at Ahead, working to build better data centers and drive adoption of cloud technologies.
Inhalt
Foreword xix
Introduction xxi
Part I Physical Networking 101
Chapter 1 The Very Basics 1
Key Concepts 1
Introduction 1
Reinventing the Wheel 2
Summary 6
Chapter 2 A Tale of Two Network Models 7
Key Concepts 7
Introduction 7
Model Behavior 9
Layering 9
Encapsulation 9
The OSI Model 10
The TCP/IP Model 12
The Network Interface Layer 12
The Internet Layer 13
The Transport Layer 14
The Application Layer 14
Comparing OSI and TCP/IP Models 15
Summary 16
Chapter 3 Ethernet Networks 17
Key Concepts 17
Introduction 17
Ethernet 18
History and Theory of Operation 18
Ethernet Standards and Cable Types 19
Ethernet Addressing 23
Extending Ethernet Segments: Repeaters, Hubs, and Switches 24
Switching Logic 25
Summary 26
Chapter 4 Advanced Layer 2 27
Key Concepts 27
Introduction 27
Concepts 28
Trunking 30
Loop Avoidance and Spanning Tree 32
Spanning Tree Overview 32
PortFast 35
Rapid Spanning Tree 35
Link Aggregation 36
What Is Link Aggregation? 36
Dynamic Link Aggregation 39
Load Distribution Types 41
Summary 42
Reference 43
Chapter 5 Layer 3 45
Key Concepts 45
Introduction 45
The Network Layer 46
Routing and Forwarding 46
Connected, Static, and Dynamic Routes 46
The Gateway of Last Resort 47
IP Addressing and Subnetting 47
Classful Addressing 48
Classless Addressing 48
Reserved Addresses 50
Network Layer Supporting Applications 50
DHCP 50
DNS 51
ARP 51
Ping 52
Summary 52
Chapter 6 Converged Infrastructure 53
Key Concepts 53
Introduction 53
Concepts 54
Converged Infrastructure Advantages 54
Examples 55
Cisco UCS 55
HP BladeSystem 57
Nutanix Virtual Computing Platform 59
Summary 60
Part II Virtual Switching
Chapter 7 How Virtual Switching Differs from Physical Switching 61
Key Concepts 61
Introduction 61
Physical and Virtual Switch Comparison 62
Similarities 62
Differences 63
Switching Decisions 63
Physical Uplinks 65
Host Network Interface Card (NIC) 65
Virtual Ports 66
Virtual Machine NICs 67
VMkernel Ports 67
Service Console 67
VLANs 68
External Switch Tagging (EST) 68
Virtual Switch Tagging (VST) 68
Virtual Guest Tagging (VGT) 69
Summary 70
Chapter 8 vSphere Standard Switch 71
Key Concepts 71
Introduction 71
The vSphere Standard Switch 72
Plane English 72
Control Plane 72
Data Plane 73
vSwitch Properties 73
Ports 73
Maximum Transmission Unit (MTU) 74
Security 75
Promiscuous Mode 75
MAC Address Changes 76
Forged Transmits 77
Discovery 78
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