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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
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
Configuring and Verifying MST 185
Configuring MST Path Cost 192
Configuring MST Port Priority 193
MST Protocol Migration 194
MST Recommended Practices 194
Troubleshooting STP 196
Potential STP Problems 196
Duplex Mismatch 196
Unidirectional Link Failure 197
Frame Corruption 197
Resource Errors 198
PortFast Configuration Errors 198
Study Tips 198
Summary 199
Review Questions 200
Chapter 5 Inter-VLAN Routing 203
Describing Inter-VLAN Routing 204
Introduction to Inter-VLAN Routing 204
Inter-VLAN Routing Using an External Router 206
Configuring Inter-VLAN Routing Using an External Router 207
Routing with an External Router 208
External Routers: Advantages Disadvantages 211
Inter-VLAN Routing Using Switch Virtual Interfaces 212
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