Brad Edgeworth, CCIE No. 31574 (R&S and SP), is a SD-WAN technical solutions architect at Cisco Systems. Brad is a distinguished speaker at Cisco Live, where he has presented on various topics. Before joining Cisco, Brad worked as a network architect and consultant for various Fortune 500 companies. Brad's expertise is based on enterprise and service provider environments, with an emphasis on architectural and operational simplicity. Brad holds a bachelor of arts degree in computer systems management from St. Edward's University in Austin, Texas. Brad can be found on Twitter as @BradEdgeworth.

Ramiro Garza Rios, CCIE No. 15469 (R&S, SP, and Security), has over 20 years of experience in the networking industry and currently works as a solutions architect in the Cisco Customer Experience (CX) organization. His expertise is on enterprise and service provider network environments, with a focus on evolving architectures and next-generation technologies. He is also a Cisco Live distinguished speaker.

Before joining Cisco Systems in 2005, he was a network consulting and presales engineer for a Cisco Gold Partner in Mexico, where he planned, designed, and implemented both enterprise and service provider networks.

David Hucaby, CCIE No. 4594 (R&S), CWNE No. 292, is a technical education content engineer for Cisco Meraki, where he focuses on eLearning for the Meraki product lines. David holds bachelor's and master's degrees in electrical engineering from the University of Kentucky. He has been authoring Cisco Press titles for almost 25 years.

Jason Gooley, CCIEx2 (RS, SP) No. 38759, has over 30 years of experience in the industry and currently works as a technical evangelist for the Worldwide Enterprise Networking and Software Sales team at Cisco Systems. Jason is passionate about helping others in the industry succeed. In addition to being a public speaker, Jason is a published Cisco Press author, developer of CCIE exams, an online training instructor, and a blogger. Jason is also co-founder and organizer of the Chicago Network Operators Group (CHI-NOG). He is the founder and host of MetalDevOps, which is a YouTube video show about the intersection of metal music and technology

Texte du rabat

"Trust the best-selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for the CCNP and CCIE ENCOR 350-401 exam. Well regarded for its level of detail, study plans, assessment features, and challenging review questions and exercises, CCNP and CCIE Enterprise Core ENCOR 350-401 Official Cert Guide, Second Edition helps you master the concepts and techniques that ensure your exam success and is the only self-study resource approved by Cisco. Expert authors Brad Edgeworth, Ramiro Garza Rios, Jason Gooley, and Dave Hucaby share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills"--

Contenu

Introduction
Part I Forwarding
Chapter 1 Packet Forwarding 2
Do I Know This Already? Quiz 2
Foundation Topics 3
Network Device Communication 3
Layer 2 Forwarding 4
Layer 3 Forwarding 19
Forwarding Architectures 26
Process Switching 26
Software CEF 29
Hardware CEF 30
SDM Templates 30
Exam Preparation Tasks 32
Use the Command Reference to Check Your Memory 33
References in This Chapter 34
Part II Layer 2
Chapter 2 Spanning Tree Protocol 36
Do I Know This Already? Quiz 36
Foundation Topics 38
Spanning Tree Protocol Fundamentals 38
IEEE 802.1D STP 38
Building the STP Topology 41
STP Topology Changes 49
Rapid Spanning Tree Protocol 53
RSTP (802.1W) Port States 54
RSTP (802.1W) Port Roles 54
RSTP (802.1W) Port Types 54
Building the RSTP Topology 55
RSTP Convergence 55
Exam Preparation Tasks 56
Use the Command Reference to Check Your Memory 56
Chapter 3 Advanced STP Tuning 58
Do I Know This Already? Quiz 58
Foundation Topics 59
STP Topology Tuning 59
Placing the Root Bridge 60
Modifying STP Root Port and Blocked Switch Port Locations 63
Modifying STP Port Priority 66
Additional STP Protection Mechanisms 67
Root Guard 68
STP Portfast 68
BPDU Guard 70
BPDU Filter 72
Problems with Unidirectional Links 73
Exam Preparation Tasks 76
Use the Command Reference to Check Your Memory 77
Chapter 4 Multiple Spanning Tree Protocol 80
Do I Know This Already? Quiz 80
Foundation Topics 81
Multiple Spanning Tree Protocol 81
MST Instances (MSTIs) 83
MST Configuration 84
MST Verification 85
MST Tuning 87
Common MST Misconfigurations 89
MST Region Boundary 90
Exam Preparation Tasks 92
Use the Command Reference to Check Your Memory 92
Chapter 5 VLAN Trunks and EtherChannel Bundles 94
Do I Know This Already? Quiz 94
Foundation Topics 96
VLAN Trunking Protocol 96
VTP Communication 97
VTP Configuration 98
VTP Verification 99
Dynamic Trunking Protocol 101
EtherChannel Bundle 104
Dynamic Link Aggregation Protocols 106
Verifying EtherChannel Status 108
Viewing EtherChannel Neighbors 110
Verifying EtherChannel Packets 113
Advanced LACP Configuration Options 114
Troubleshooting EtherChannel Bundles 118
Load Balancing Traffic with EtherChannel Bundles 119
Exam Preparation Tasks 121
Use the Command Reference to Check Your Memory 121
Part III Routing
Chapter 6 IP Routing Essentials 124
Do I Know This Already? Quiz 124
Foundation Topics 126
Routing Protocol Overview 126
Distance Vector Algorithms 128
Enhanced Distance Vector Algorithms 129
Link-State Algorithms 130
Path Vector Algorithm 131
Path Selection 132
Prefix Length 133
Administrative Distance 133
Metrics 135
Static Routing 137
Static Route Types 138
Floating Static Routing 141
Static Routes to Null Interfaces 143
IPv6 Static Routes 145
Policy-based Routing 146
Virtual Routing and Forwarding 149
Exam Preparation Tasks 151
Use the Command Reference to Check Your Memory 153
Chapter 7 EIGRP 154
Do I Know This Already? Quiz 154
Foundation Topics 156
EIGRP Fundamentals 156
Autonomous Systems 157
EIGRP Terminology 157
Topology Table 159
EIGRP Neighbors 160
Path Metric Calculation 160
Wide Metrics 162
Metric Backward Compatibility 163
Load Balancing 163
Failure Detection and Timers 164
Convergence 164
Route Summarization 166
Exam Preparation Tasks 167
References in This Chapter 168
Chapter 8 OSPF 170
Do I Know This Already? Quiz 170
Foundation Topics 172
OSPF Fundamentals 172
Inter-Router Communication 174
OSPF Hello Packets 175
Router ID 175
Neighbors 175
Designated Router and Backup Designated Router 176
OSPF Configuration 178
OSPF Network Statement 178
Interface-Specific Configuration 180
Statically Setting the Router ID 180
Passive Interfaces 181
Requirements for Neighbor Adjacency 181
Sample Topology and Configuration 181
Confirmation of Interfaces 184
Verification of OSPF Neighbor Adjacencies 185
Verification of OSPF Routes 186
Default Route Advertisement 187
Common OSPF Optimizations 188
Link Costs 189
Failure Detection 189
DR Placement 190
OSPF Network Types 194
Exam Preparation Tasks 198
Use the Command Reference to Check Your Memory 199
References in This Chapter 200
Chapter 9 Advanced OSPF 202
Do I Know This Already? Quiz 202
Foundation Topics 204
Areas 204
Area ID 207
OSPF Route Types 207
Link-State Advertisements 209
LSA Sequences 210
LSA Age and Flooding 210
LSA Types 210
Discontiguous Networks 217
OSPF Path Selection 218
…