Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide

Now fully updated for the new Cisco SWITCH 300-115 exam, Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide is your Cisco® authorized learning tool for CCNP® or CCDP® preparation. Part of the Cisco Press Foundation Learning Series, it teaches you how to plan, configure, verify, secure, and maintain complex enterprise switching solutions using Cisco Catalyst® switches and Enterprise Campus Architecture.

The authors show you how to build scalable multilayer switched networks, create and deploy global intranets, and perform basic troubleshooting in environments using Cisco multilayer switches for client hosts and services. They begin by reviewing basic switching concepts, network design, and campus network architecture. Next, they present in-depth coverage of spanning-tree, inter-VLAN routing, first-hop redundancy, network management, advanced switch features, high availability, and campus network security.

Each chapter opens with a list of topics that clearly identify its focus. Each chapter ends with a summary of key concepts for quick study, as well as review questions to assess and reinforce your understanding. Throughout, configuration examples, and sample verification outputs illustrate critical issues in network operation and troubleshooting.

This guide is ideal for all certification candidates who want to master all the topics covered on the SWITCH 300-115 exam.

• Serves as the official textbook for version 7 of the Cisco Networking Academy CCNP SWITCH course
• Covers basic switching terminology and concepts, and the unique features of Cisco Catalyst switch designs
• Reviews campus network design, including network structure, roles of Cisco Catalyst switches, and differences between Layer 2 and multilayer switches
• Introduces VLANs, VTP, Trunking, and port-channeling
• Explains Spanning Tree Protocol configuration
• Presents concepts and modern best practices for interVLAN routing
• Covers first-hop redundancy protocols used by Cisco Catalyst switches
• Outlines a holistic approach to network management and Cisco Catalyst device security with AAA, NTP, 802.1x, and SNMP
• Describes how to use advanced features to improve campus network resiliency and availability
• Shows how to establish switch physical redundancy using Stackwise, VSS, or redundant supervisors

• Explains advanced security features

Autorentext

Richard Froom, CCIE No. 5102, is a manager within the Solution Validation Services (SVS) team at Cisco. Richard previously worked as a network engineer in the Cisco TAC and in various customer-facing testing organizations within Cisco. Richard holds CCIEs

in Routing and Switching and in Storage Networking. Richard currently focuses on expanding his team's validation coverage to new technologies in the data center, including Application Centric Infrastructure (ACI), OpenStack, Intercloud Fabric, and big data solutions with Hadoop.

Erum Frahim, CCIE No. 7549 , is a technical leader working in the Solution Validation Services (SVS) group at Cisco. In her current role, Erum is leading efforts to test data center solutions for several Cisco high-profile customers and leading all the cross-business units interlock. Most recently, she is working on Application Centric Infrastructure (ACI), UCS Director, OpenStack, and big data. Before this, Erum managed the Nexus platform escalation group and served as a team lead for the data center storage-area network (SAN) test lab under the Cisco data center business unit. Erum joined Cisco in 2000 as a technical support engineer. Erum has a Master of Science degree in electrical engineering from Illinois Institute of Technology and also holds a Bachelor of Engineering degree from NED University, Karachi, Pakistan. Erum also authors articles in Certification Magazine and on Cisco.com and has participated in many CiscoLive Events. In her spare time, Erum enjoys her time with her husband and child.

Inhalt

Introduction xx

Chapter 1 Fundamentals Review 1

Switching Introduction 2

Hubs and Switches 2

Bridges and Switches 2

Switches of Today 3

Broadcast Domains 3

MAC Addresses 4

The Basic Ethernet Frame Format 4

Basic Switching Function 5

VLANs 6

The Spanning Tree Protocol 6

Trunking 7

Port Channels 7

Multilayer Switching 8

Summary 8

Chapter 2 Network Design Fundamentals 9

Campus Network Structure 9

Hierarchical Network Design 10

Access Layer 12

Distribution Layer 13

Core Layer (Backbone) 14

Layer 3 in the Access Layer 17

The Cisco Enterprise Campus Architecture 19

The Need for a Core Layer 20

Types of Cisco Switches 22

Comparing Layer 2 and Multilayer Switches 24

MAC Address Forwarding 24

Layer 2 Switch Operation 25

Layer 3 (Multilayer) Switch Operation 26

Useful Commands for Viewing and Editing Catalyst Switch MAC Address Tables 27

Frame Rewrite 28

Distributed Hardware Forwarding 28

Cisco Switching Methods 29

Route Caching 30

Topology-Based Switching 31

Hardware Forward Details 33

Study Tips 34

Summary 34

Review Questions 35

Chapter 3 Campus Network Architecture 41

Implementing VLANs and Trunks in Campus Environment 41

VLAN Overview 42

VLAN Segmentation 44

End-to-End VLANs 44

Local VLANs 45

Comparison of End-to-End VLANs and Local VLANs 46

Mapping VLANs to a Hierarchical Network 47

Implementing a Trunk in a Campus Environment 49

Understanding Native VLAN in 802.1Q Trunking 52

Understanding DTP 53

VLAN Ranges and Mappings 54

Configuring, Verifying, and Troubleshooting VLANs and Trunks 55

Verifying the VLAN Configuration 57

Configuring VLANs and Trunks 61

Best Practices for VLANs and Trunking 65

Voice VLAN Overview 67

Switch Configuration for Wireless Network Support 69

VLAN Trunking Protocol 70

VTP Overview 70

VTP Modes 71

VTP Versions 73

VTP Pruning 74

VTP Authentication 75

VTP Advertisements 75

VTP Messages Types 77

Summary Advertisements 77

Subset Advertisements 77

Configuring and Verifying VTP 78

Overwriting VTP Configuration (Very Common Issue with VTP) 87

Best Practices for VTP Implementation 93

Implementing EtherChannel in a Switched Network 94

The Need for EtherChannel 94

EtherChannel Mode Interactions 97

LACP 97

PAgP 98

Layer 2 EtherChannel Configuration Guidelines 99

EtherChannel Load-Balancing Options 100

Configuring EtherChannel in a Switched Network 102

EtherChannel Configuration and Load Balancing 103

EtherChannel Guard 108

Study Tips 109

Summary 110

Review Questions 110

Chapter 4 Spanning Tree in Depth 119

Spanning Tree Protocol Overview 120

STP Need 120

STP Standards 121

STP Operations 122

Bridge Protocol Data Units 124

Root Bridge Election 124

Root Port Election 126

Designated Port Election 128

STP Port States 129

Per-VLAN STP Plus (PVST+) 130

STP Topology Changes 131

Rapid Spanning Tree Protocol 133

RSTP Port Roles 134

Comparison of RSTP and STP Port States 135

RSTP Topology Changes 136

RSTP Link Types 138

Configuring and Modifying STP Behavior 140

Changing STP Priority 143

STP Path Manipulation 145

STP Timers 148

Implementing STP Stability Mechanisms 151

Use UplinkFast 153

Use BackboneFast 154

Use PortFast 156

Securing PortFast Interface with BPDU Guard 158

Disabling STP with BPDU Filter 159

Use Root Guard 161

Loop Guard Overview 164

Use UDLD 166

UDLD Recommended Practices 170

Use FlexLinks 171

STP Stability Mechanisms Recommendations 175

Configuring Multiple Spanning Tree Protocol 179

Introducing MST 179

MST Regions 182

STP Instances with MST 183

Extended System ID for MST 185 …