Introduction . . . . . . . . . . . xviii
Part I: Network Fundamentals 1
CHAPTER 1: Network Fundamentals: Models and Designs . . . . . . 3
Topic: Compare and contrast OSI and TCP/IP models . . . . 5
Topic: Compare and contrast TCP and UDP protocols . . . 11
Topic: Describe the impact of infrastructure components in an enterprise network . . . . . . . . . 15
Topic: Describe the effects of cloud resources on enterprise network architecture . . . . . . . . . . . 18
Topic: Compare and contrast collapsed core and three-tier architectures . . . . . . . . . . 22
Topic: Compare and contrast network topologies . . . . 25
Topic: Select the appropriate cabling type based on implementation requirements . . . . . . . . . . 28
Topic: Apply troubleshooting methodologies to resolve problems . . 31
Review Questions . . . . . . . . . . 33
Answers to Review Questions . . . . . . . . 35
Additional Resources . . . . . . . . . 36
CHAPTER 2: Network Fundamentals: IPv4 . . . . . . . . . 37
Topic: Configure, verify, and troubleshoot IPv4 addressing and subnetting . . . . . . . . . . . 38
Topic: Compare and contrast IPv4 address types . . . . 47
Topic: Describe the need for private IPv4 addressing . . . . 50
Review Questions . . . . . . . . . . 53
Answers to Review Questions . . . . . . . . 55
Additional Resources . . . . . . . . . 56
CHAPTER 3: Network Fundamentals: IPv6 . . . . . . . . . 57
Topic: Identify the appropriate IPv6 addressing scheme to satisfy addressing requirements in a LAN/WAN environment . . . 58
Topic: Configure, verify, and troubleshoot IPv6 addressing . . . 62
Topic: Configure and verify IPv6 Stateless Address Auto Configuration . . . . . . . . . 66
CCNA Routing and Switching 200-125 Exam Cram
Topic: Compare and contrast IPv6 address types . . . . 69
Review Questions . . . . . . . . . . 72
Answers to Review Questions . . . . . . . . 74
Additional Resources . . . . . . . . . 75
Part II: LAN Switching Technologies 77
CHAPTER 4: LAN Switching Technologies: Switching Concepts . . . . . 79
Topic: Describe and verify switching concepts . . . . . 80
Topic: Interpret Ethernet frame format . . . . . . 85
Topic: Troubleshoot interface and cable issues (collisions, errors, duplex, speed) . . . . . . . . . . 88
Review Questions . . . . . . . . . . 94
Answers to Review Questions . . . . . . . . 95
Additional Resources . . . . . . . . . 96
CHAPTER 5: LAN Switching Technologies: VLANs, Trunks, and STP . . . . 97
Topic: Configure, verify, and troubleshoot VLANs (normal range) spanning multiple switches . . . . . . . . 99
Topic: Configure, verify, and troubleshoot interswitch connectivity . 107
Topic: Configure, verify, and troubleshoot STP protocols . . . 111
Topic: Configure, verify, and troubleshoot STP-related optional features . . . . . . . . . . . 119
Topic: Configure and verify Layer 2 protocols . . . . . 122
Review Questions . . . . . . . . . . 125
Answers to Review Questions . . . . . . . . 126
Additional Resources . . . . . . . . . 127
CHAPTER 6: LAN Switching Technologies: EtherChannel and Switch Stacking . . 129
Topic: Configure, verify, and troubleshoot (Layer 2/Layer 3) EtherChannel . . . . . . . . . . 130
Topic: Describe the benefits of switch stacking and chassis aggregation . . . . . . . . . . . 137
Review Questions . . . . . . . . . . 139
Answers to Review Questions . . . . . . . . 140
Additional Resources . . . . . . . . . 141
Part III: Routing Technologies 143
CHAPTER 7: Routing Technologies: Routing Concepts . . . . . . 145
Topic: Describe the routing concepts . . . . . . 146
Topic: Interpret the components of routing table . . . . 148
Topic: Describe how a routing table is populated by different routing information sources . . . . . . . . 153
Review Questions . . . . . . . . . . 156
Answers to Review Questions . . . . . . . . 157
Additional Resources . . . . . . . . . 158
CHAPTER 8: Routing Technologies: Inter-VLAN Routing . . . . . . 159
Topic: Configure, verify, and troubleshoot inter-VLAN routing . . 160
Review Questions . . . . . . . . . . 171
Answers to Review Questions . . . . . . . . 172
Additional Resources . . . . . . . . . 173
CHAPTER 9: Routing Technologies: Routing Methods . . . . . . . 175
Topic: Compare and contrast static routing and dynamic routing . . 176
Topic: Compare and contrast distance vector and link state routing protocols . . . . . . . . . . 179
Topic: Compare and contrast interior and exterior routing protocols . 181
Review Questions . . . . . . . . . . 183
Answers to Review Questions . . . . . . . . 184
Additional Resources . . . . . . . . . 185
CHAPTER 10: Routing Technologies: Static Routing and Dynamic Routing . . . 187
Topic: Configure, verify, and troubleshoot IPv4 and IPv6 static routing . . . . . . . . . 189
Topic: Configure, verify, and troubleshoot single area and multi-area OSPFv2 for IPv4 (excluding authentication, filtering, manual summarization, redistribution, stub, virtual-link, and LSAs) . . 193
Topic: Configure, verify, and troubleshoot single area and multi-area OSPFv3 for IPv6 (excluding authentication, filtering, manual summarization, redistribution, stub, virtual-link, and LSAs) . . 199
Topic: Configure, verify, and troubleshoot EIGRP for IPv4 (excluding authentication, filtering, manual summarization, redistribution, and stub) . . . . . . . . 202
Topic: Configure, verify, and troubleshoot EIGRP for IPv6 (excluding authentication, filtering, manual summarization, redistribution, and stub) . . . . . . . . 205
Topic: Configure, verify, and troubleshoot RIPv2 for IPv4 (excluding authentication, filtering, manual summarization, and redistribution) . . . . . . . . . . 208
Topic: Troubleshoot basic Layer 3 end-to-end connectivity issues . 218
Review Questions . . . . . . . . . . 220
Answers to Review Questions . . . . . . . . 222
Additional Resources . . . . . . . . . 223
Part IV: WAN Technologies 225
CHAPTER 11: WAN Technologies: WAN Options . . . . . . . . 227
Topic: Configure and verify PPP and MLPPP on WAN interfaces using local authentication . . . . . . . . 228
Topic: Configure, verify, and troubleshoot PPPoE client-side interfaces using local authentication . . . . . . 232
Topic: Configure, verify, and troubleshoot GRE tunnel connectivity . 235
Topic: Describe WAN topology options . . . . . . 238
Topic: Describe WAN access connectivity options . . . . 240
Review Questions . . . . . . . . . . 242
Answers to Review Questions . . . . . . . . 243
Additional Resource . . . . . . . . . 244
CHAPTER 12: WAN Technologies: eBGP . . . . . . . . . 245
Topic: Configure and verify single-homed branch connectivity using eBGP IPv4 (limited to peering and route advertisement using Network command only) . . . . . . . 246
Review Questions . . . . . . . . . . 251
Answers to Review Questions . . . . . . . . 252
Additional Resource . . . . . . . . . 253
CHAPTER 13: WAN Technologies: QoS . . . . . . . . . 255
Topic: Describe basic QoS concepts . . . . . . . 256
Review Questions . . . . . . . . . . 259
Answers to Review Questions . . . . . . . . 260
Additional Resource . . . . . . . . . 261
Part V: Infrastructure Services 263
CHAPTER 14: Infrastructure Services: DNS, DHCP, NTP, HSRP . . . . . 265
Topic: Describe DNS lookup operation . . . . . . 267
Topic: Troubleshoot client connectivity issues involving DNS . . 270
Topic: Configure and verify DHCP on a router (excluding static reservations). . . . . . . . . . . 275
Topic: Troubleshoot client- and router-based DHCP connectivity issues . . . . . . . . . 280
Topic: Configure and verify NTP operating in client/server mode . 289
Topic: Configure, verify, and troubleshoot basic HSRP . . . 292
Review Questions . . . . . . . . . . 295
Answers to Review Questions . . . . . . . . 296
Additional Resources . . . . . . . . . 297
CHAPTER 15: Infrastructure Services: NAT . . . . . . . . . 299
Topic: Configure, verify, and troubleshoot inside source NAT . . 300
Review Questions . . . . . . . . . . 309
Answers to Review Questions . . . . . . . . 310
Additional Resource . . . . . . . . . 311
Part VI: Infrastructure Security 313
CHAPTER 16: Infrastructure Security: Access Layer Security, AAA . . . . 315
Topic: Configure, verify, and troubleshoot port security . . . 316
Topic: Describe common access layer threat mitigation techniques . 321
Topic: Describe device security using AAA with TACACS+ and RADIUS . . . . . . . . . . . 323
Review Questions . . . . . . . . . . 325
Answers to Review Questions . . . . . . . . 326
Additional Resources . . . . . . . . . 327
CHAPTER 17: Infrastructure Security: ACLs . . . . . . . . . 329
Topic: Configure, verify, and troubleshoot IPv4 standard numbered and named access list for routed interfaces . . . . . 330
Review Questions . . . . . . . . . . 344
Answers to Review Questions . . . . . . . . 345
Additional Resources . . . . . . . . . 346
CHAPTER 18: Infrastructure Security: Device Hardening . . . . . . 347
Topic: Configure, verify, and troubleshoot basic device hardening . . . . . . . . . . . 348
Review Questions . . . . . . . . . . 359
Answers to Review Questions . . . . . . . . 360
Additional Resources . . . . . . . . . 361
Part VII: Infrastructure Management 363
CHAPTER 19: Infrastructure Management: SNMP, Syslog, IP SLA . . . . . 365
Topic: Configure and verify device-monitoring using syslog and SNMP . . . . . . . . . . 366
Topic: Troubleshoot network connectivity issues using ICMP echo-based IP SLA . . . . . . . . 371
Review Questions . . . . . . . . . . 373
Answers to Review Questions . . . . . . . . 374
Additional Resources . . . . . . . . . 375
CHAPTER 20: Infrastructure Management: Device Management . . . . . 377
Topic: Configure and verify device management . . . . 378
Review Questions . . . . . . . . . . 384
Answers to Review Questions . . . . . . . . 385
Additional Resources . . . . . . . . . 386
CHAPTER 21: Infrastructure Management: Initial Device Configuration . . . . 387
Topic: Configure and verify initial device configuration. . . 388
Review Questions . . . . . . . . . . 395
Answers to Review Questions . . . . . . . . 396
Additional Resource . . . . . . . . . 397
CHAPTER 22: Infrastructure Management: Device Maintenance . . . . . 399
Topic: Perform device maintenance . . . . . . . 400
Review Questions . . . . . . . . . . 406
Answers to Review Questions . . . . . . . . 407
Additional Resources . . . . . . . . . 408
CHAPTER 23: Infrastructure Management: IOS Troubleshooting Tools . . . . 409
Topic: Use Cisco IOS tools to troubleshoot and resolve problems . 410
Review Questions . . . . . . . . . . 427
Answers to Review Questions . . . . . . . . 429
Additional Resources . . . . . . . . . 430
CHAPTER 24: Infrastructure Management: Network Programmability . . . . 431
Topic: Describe network programmability in enterprise network architecture . . . . . . . . . . . 432
Review Questions . . . . . . . . . . 435
Answers to Review Questions . . . . . . . . 436
Additional Resource . . . . . . . . . 437
Part VIII: Command Reference, Practice Exams, and Glossary 439
Command Reference . . . . . . . . . . 441
Practice Exam 1 . . . . . . . . . . . 453
Answer Key to Practice Exam 1 . . . . . . . . 469
Practice Exam 2 . . . . . . . . . . . 477
Answer Key to Practice Exam 2 . . . . . . . . 503
Glossary . . . . . . . . . . . . 511
978789756749, TOC, 1/20/2017
