31 days before your CCNA routing & switching exam : a day-by-day review guide for the ICND1/CCENT (100-105), ICND2 (200-105), and CCNA (200-125) certification exam

Content: Introduction xxviii Digital Study Guide xxxiii Day 31: Networking Models, Devices, and Components 1 CCNA 200-125 Exam Topics 1 Key Points 1 The OSI and TCP/IP Models 1 OSI Layers 2 TCP/IP Layers and Protocols 3 Protocol Data Units and Encapsulation 4 The TCP/IP Application Layer 5 The TCP/IP Transport Layer 5 TCP Header 6 Port Numbers 7 Error Recovery 7 Flow Control 8 Connection Establishment and Termination 9 UDP 10 The TCP/IP Internet Layer 10 The TCP/IP Network Access Layer 11 Data Encapsulation Summary 12 Devices 13 Switches 13  Access Layer Switches 14  Distribution Layer Switches 14  Core Layer Switches 14 Routers 15 Specialty Devices 15  Firewalls 16  IDS and IPS 16 Access Points and Wireless LAN Controllers 17 Physical Layer 19 Network Media Forms and Standards 19 LAN Device Connection Guidelines 21 LANs and WANs 22 Networking Icons 23 Physical and Logical Topologies 23 Hierarchical Campus Designs 24 Study Resources 26 Day 30: Ethernet Switching 27 CCNA 200-125 Exam Topics 27 Key Topics 27 Evolution to Switching 27 Switching Logic 28 Collision and Broadcast Domains 29 Frame Forwarding 29 Switch Forwarding Methods 29 Symmetric and Asymmetric Switching 30 Memory Buffering 30 Layer 2 and Layer 3 Switching 30 Ethernet Overview 30 Legacy Ethernet Technologies 31 CSMA/CD 32 Legacy Ethernet Summary 33 Current Ethernet Technologies 33 UTP Cabling 34 Benefits of Using Switches 35 Ethernet Addressing 36 Ethernet Framing 37 The Role of the Physical Layer 38 Study Resources 39 Day 29: Switch Configuration Basics 41 CCENT 100-101 ICND1 Exam Topics 41 Key Topics 41 Accessing and Navigating the Cisco IOS 41 Connecting to Cisco Devices 41 CLI EXEC Sessions 42 Using the Help Facility 42 CLI Navigation and Editing Shortcuts 43 Command History 44 IOS Examination Commands 44 Subconfiguration Modes 45 Basic Switch Configuration Commands 46 Half-Duplex, Full-Duplex, and Port Speed 47 Automatic Medium-Dependent Interface Crossover (auto-MDIX) 48 Verifying Network Connectivity 48 Troubleshoot Interface and Cable Issues 51 Media Issues 51 Interface Status and the Switch Configuration 52  Interface Status Codes 52  Duplex and Speed Mismatches 52  Common Layer 1 Problems On "Up" Interfaces 54 Study Resources 54 Day 28: VLAN and Trunking Concepts and Configurations 57 CCENT 100-101 ICND1 Exam Topics 57 Key Points 57 VLAN Concepts 57 Traffic Types 58 Types of VLANs 59 Voice VLAN Example 59 Trunking VLANs 60 Dynamic Trunking Protocol 61 VLAN Configuration and Verification 62 Extended VLANs 66 Trunking Configuration and Verification 68 VLAN Troubleshooting 71 Disabled VLANs 72 Trunking Troubleshooting 73 Check Both Ends of a Trunk 73 Check Trunking Operational States 74 Study Resources 75 Day 27: IPv4 Addressing 77 CCENT 100-101 ICND1 Exam Topics 77 Key Topics 77 IPv4 Addressing 77 Header Format 78 Classes of Addresses 78 Purpose of the Subnet Mask 80 Private and Public IP Addressing 81 Subnetting in Four Steps 81 Determine How Many Bits to Borrow 81 Determine the New Subnet Mask 82 Determine the Subnet Multiplier 83 List the Subnets, Host Ranges, and Broadcast Addresses 83 Subnetting Example 1 83 Subnetting Example 2 84 Subnetting Example 3 84 VLSM 85 Study Resources 87 Day 26: IPv6 Addressing 89 CCNA 200-125 Exam Topics 89 Key Topics 89 Overview and Benefits of IPv6 89 The IPv6 Protocol 90 IPv6 Address Types 91 Unicast 92  Global Unicast Address 92  Link-Local Address 95  Loopback Address 96  Unspecified Address 96  Unique Local Address 96  IPv4 Embedded Address 97 Multicast 98  Assigned Multicast 98  Solicited-Node Multicast 98 Anycast 100 Representing the IPv6 Address 100 Conventions for Writing IPv6 Addresses 100 Conventions for Writing IPv6 Prefixes 101 IPv6 Subnetting 102 Subnetting the Subnet ID 103 Subnetting into the Interface ID 103 EUI-64 Concept 103 Stateless Address Autoconfiguration 104 Migration to IPv6 105 Study Resources 106 Day 25: Basic Routing Concepts 107 CCNA 200-125 Exam Topics 107 Key Topics 107 Packet Forwarding 107 Path Determination and Switching Function Example 108 Routing Methods 109 Classifying Dynamic Routing Protocols 110 IGP and EGP 110 Distance Vector Routing Protocols 111 Link-State Routing Protocols 111 Classful Routing Protocols 112 Classless Routing Protocols 112 Dynamic Routing Metrics 112 Administrative Distance 113 IGP Comparison Summary 115 Routing Loop Prevention 115 Link-State Routing Protocol Features 116 Building the LSDB 116 Calculating the Dijkstra Algorithm 117 Convergence with Link-State Protocols 118 Study Resources 119 Day 24: Basic Router Configuration 121 CCNA 200-125 Exam Topics 121 Key Topic 121 Basic Router Configuration with IPv4 121 Command Syntax 122 Configuration Example 122 Verification Example 124 Basic Router Configuration with IPv6 130 Command Syntax 130 Configuration Example 130 Verifying IPv4 and IPv6 Network Connectivity 133 Basic IP Addressing Troubleshooting 136 Default Gateway 136 Duplicate IP Addresses 136 Study Resources 137 Day 23: Static and Default Route Configuration 139 CCNA 200-125 Exam Topics 139 Key Topics 139 Static and Default Routing Overview 139 IPv4 Static Route Configuration 140 IPv4 Static Routes Using the Next-Hop Parameter 142 IPv4 Static Routes Using the Exit Interface Parameter 143 IPv4 Default Route Configuration 144 IPv4 Summary Static Route Configuration 147 IPv6 Static Routing 148 IPv6 Static Route Configuration 149 IPv6 Default Route Configuration 150 IPv6 Summary Static Route Configuration 151 Study Resources 152 Day 22: RIPv2 Implementation 155 CCNA 200-125 Exam Topics 155 Key Topic 155 RIP Concepts 155 RIPv1 Message Format 155 RIPv1 Operation 156 RIPv1 Configuration 156 RIPv1 Verification and Troubleshooting 158 Passive Interfaces 161 Automatic Summarization 162 Default Routing and RIPv1 164 RIPv2 Configuration 165 Disabling Autosummarization 167 RIPv2 Verification and Troubleshooting 167 Study Resources 168 Day 21: VTP and Inter-VLAN Routing Configuration 169 CCNA 200-125 Exam Topics 169 Key Topics 169 VTP Concepts 169 VTP Configuration and Verification 171 Inter-VLAN Routing Concepts 175 Legacy Inter-VLAN Routing 175 Router on a Stick 176 Multilayer Switch 177 Router on a Stick Configuration and Verification 177 Multilayer Switch Inter-VLAN Routing Configuration and Verification 180 Creating Additional SVIs 180 Configuring a Layer 3 Routed Port 182 Study Resources 182 Day 20: OSPF Operation 185 CCNA 200-125 Exam Topics 185 Key Topics 185 Single-Area OSPF Operation 185 OSPF Message Format 185 OSPF Packet Types 186 Neighbor Establishment 186 Link-State Advertisements 188 OSPF DR and BDR 189 OSPF Algorithm 189 Link-State Routing Process 190 OSPFv2 Versus OSPFv3 191 Similarities Between OSPFv2 and OSPFv3 191 Differences Between OSPFv2 and OSPFv3 192 Multiarea OSPF Operation 192 Multiarea OSPF Design 192 Multiarea OSPF Improves Performance 194 Study Resources 194 Day 19: Single-Area OSPF Implementation 197 CCNA 200-125 Exam Topics 197 Key Topics 197 Single-Area OSPFv2 Configuration 197 The router ospf Command 198 Router ID 198 The network Command 199 Passive Interfaces 200 Modifying the OSPF Metric 200 Verifying OSPFv2 203 Single-Area OSPFv3 Configuration 206 The Router ID in OSPFv3 208 Verifying OSPFv3 209 Study Resources 212 Day 18: Multiarea OSPF Implementation 215 CCNA 200-125 Exam Topics 215 Key Topics 215 Multiarea OSPFv2 Implementation 215 Multiarea OSPFv3 Implementation 218 Study Resources 223 Day 17: Fine-Tuning and Troubleshooting OSPF 225 CCNA 200-125 Exam Topics 225 Key Topics 225 OSPFv2 Configuration Example 225 Modifying OSPFv2 227 Redistributing a Default Route 227 Modifying Hello and Dead Intervals 228 OSPF Network Types 228 DR/BDR Election 229 Controlling the DR/BDR Election 229 OSPFv3 Configuration Example 231 Modifying OSPFv3 233 Propagating a Default Route 233 Modifying the Timers 234 Troubleshooting OSPF 235 OSPF States 235 OSPF Adjacency 236 OSPF Troubleshooting Commands 236 Study Resources 238 Day 16: EIGRP Operation 239 CCNA 200-125 Exam Topics 239 Key Topics 239 EIGRP Overview 239 EIGRP Characteristics 240 PDMs 240 RTP 240 EIGRP Packet Types 241 EIGRP Message Format 241 EIGRP Processes 243 EIGRP Convergence 243 EIGRP Composite Metric 244 Administrative Distance 244 DUAL 245 DUAL Concepts 245 DUAL FSM 246 Study Resources 247 Day 15: EIGRP Implementation 249 CCNA 200-125 Exam Topics 249 Key Topics 249 EIGRP for IPv4 Configuration 249 EIGRP Topology and Addressing Scheme 249 The network Command 250 The Router ID 250 EIGRP for IPv4 Verification 251 Examining the Protocol Details 251 Examining Neighbor Tables 252 Examining the Topology Tables 253 Examining the Routing Table 255 EIGRP for IPv6 Concepts 255 EIGRP for IPv6 Configuration 256 EIGRP for IPv6 Verification 258 Examining the Protocol Details 258 Examining the Neighbor Table 259 Examining the Routing Table 260 Study Resources 261 Day 14: Fine-Tuning and Troubleshooting EIGRP 263 CCNA 200-125 Exam Topics 263 Key Topics 263 Modifying the EIGRP for IPv4 Configuration 263 Automatic Summarization 263 EIGRP for IPv4 Topology 264 Propagating an IPv4 Default Route 265 Modifying the EIGRP Metric 266 Modifying Hello Intervals and Hold Times 266 Modifying EIGRP for IPv6 267 EIGRP for IPv6 Topology 267 Propagating an IPv6 Default Route 267 Modifying Bandwidth Utilization 268 Modifying Hello Intervals and Hold Times 269 EIGRP Troubleshooting Commands 269 Discontiguous Networks 270 Study Resources 271 Day 13: CDP and LLDP 273 CCNA 200-125 Exam Topics 273 Key Topics 273 CDP Overview 273 CDP Configuration 274 CDP Verification 277 LLDP Overview 279 LLDP Configuration 280 LLDP Verification 281 Study Resources 283 Day 12: LAN Security and Device Hardening 285 CCNA 200-125 Exam Topics 285 Key Topics 285 Port Security Configuration 285 Port Restoration After a Violation 288 LAN Threat Mitigation 289 DHCP Snooping 289 Native and Management VLAN Modification 290 Switch Port Hardening 291 AAA 292 802.1X 293 SSH Configuration 294 Study Resources 296 Day 11: STP 297 CCNA 200-125 Exam Topics 297 Key Topics 297 STP Concepts and Operation 297 STP Algorithm 298 STP Convergence 299 STP Varieties 300 PVST Operation 301 Port States 302 Extended System ID 303 Rapid PVST+ Operation 303 RSTP Interface Behavior 304 RSTP Port Roles 305 Edge Ports 305 Configuring and Verifying Varieties of STP 306 STP Configuration Overview 306 Configuring and Verifying the BID 307 Configuring PortFast and BPDU Guard 309 Configuring Rapid PVST+ 309 Verifying STP 310 Switch Stacking 310 Study Resources 312 Day 10: EtherChannel and HSRP 313 CCNA 200-125 Exam Topics 313 Key Topics 313 EtherChannel Operation 313 Benefits of EtherChannel 314 Implementation Restrictions 314 EtherChannel Protocols 315 Port Aggregation Protocol 315 Link Aggregation Control Protocol 315 Configuring EtherChannel 316 Verifying EtherChannel 317 Troubleshooting EtherChannel 319 First-Hop Redundancy Concepts 319 FHRPs 320 HSRP Operation 321 HSRP Versions 321 HSRP Priority and Preemption 322 HSRP Configuration and Verification 322 HSRP Load Balancing 323 Troubleshooting HSRP 326 Study Resources 326 Day 9: ACL Concepts 329 CCNA 200-125 Exam Topics 329 Key Topics 329 ACL Operation 329 Defining an ACL 329 Processing Interface ACLs 329 List Logic with IP ACLs 330 Planning to Use ACLs 331 Types of ACLs 332 ACL Identification 333 ACL Design Guidelines 333 Study Resources 334 Day 8: ACL Implementation 335 CCNA 200-125 Exam Topics 335 Key Topics 335 Configuring Standard Numbered IPv4 ACLs 335 Standard Numbered IPv4 ACL: Permit Specific Network 335 Standard Numbered IPv4 ACL: Deny a Specific Host 336 Standard Numbered IPv4 ACL: Deny a Specific Subnet 337 Standard Numbered IPv4 ACL: Deny Telnet or SSH Access to the Router 337 Configuring Extended Numbered IPv4 ACLs 337 Extended Numbered IPv4 ACL: Deny FTP from Subnets 338 Extended Numbered IPv4 ACL: Deny Only Telnet from Subnet 338 Configuring Named IPv4 ACLs 339 Standard Named IPv4 ACL Steps and Syntax 339 Standard Named IPv4 ACL: Deny a Single Host from a Given Subnet 340 Extended Named IPv4 ACL Steps and Syntax 340 Adding Comments to Named or Numbered IPv4 ACLs 340 Verifying IPv4 ACLs 341 Comparing IPv4 and IPv6 ACLs 343 Configuring IPv6 ACLs 343 Step 1: Name the IPv6 ACL 344 Step 2: Create the IPv6 ACL 344 Step 3: Apply the IPv6 ACL 344 Standard IPv6 ACL: Allow SSH Remote Access 344 Extended IPv6 ACL: Allow Only Web Traffic 345 Verifying IPv6 ACLs 346 Troubleshooting ACLs 348 Study Resources 349 Day 7: DHCP and DNS 351 CCNA 200-125 Exam Topics 351 Key Topics 351 DHCPv4 351 DHCPv4 Configuration Options 352 Configuring a Router as a DHCPv4 Server 352 Configuring a Router to Relay DHCPv4 Requests 356 Configuring a Router as a DHCPv4 Client 357 DHCPv6 358 SLAAC 358 Stateless DHCPv6 360 Stateful DHCPv6 360 Stateless and Stateful DHCPv6 Operation 360 DHCPv6 Configuration Options 361 Configuring a Router as a Stateless DHCPv6 Server 361 Configuring a Router as a Stateful DHCPv6 Server 363 DHCP Troubleshooting 363 Resolve IPv4 Address Conflicts 363 Test Connectivity Using a Static IP Address 364 Verify Switch Port Configuration 364 Test DHCPv4 Operation on the Same Subnet or VLAN 364 DNS Operation 364 Troubleshooting DNS 366 Study Resources 367 Day 6: NAT 369 CCNA 200-125 Exam Topics 369 Key Topics 369 NAT Concepts 369 A NAT Example 371 Dynamic and Static NAT 372 NAT Overload 372 NAT Benefits 373 NAT Limitations 373 Configuring Static NAT 374 Configuring Dynamic NAT 375 Configuring NAT Overload 376 Verifying NAT 377 Troubleshooting NAT 378 NAT for IPv6 379 IPv6 Private Address Space 379 Purpose of NAT for IPv6 379 Study Resources 380 Day 5: WAN Overview 381 CCNA 200-125 Exam Topics 381 Key Topics 381 WAN Topologies 381 WAN Connection Options 382 Dedicated Connection Options 383 Circuit-Switched Connection Options 384 Packet-Switched Connection Options 385  Metro Ethernet 385  MPLS 386 Internet Connection Options 386  DSL 386  Cable Modem 387  Wireless 388 Choosing a WAN Link Option 388 VPN Technology 389 VPN Benefits 389 Types of VPN Access 389 Study Resources 391 Day 4: WAN Implementation 393 CCNA 200-125 Exam Topics 393 Key Topics 393 PPP Concepts 393 The PPP Frame Format 393 PPP Link Control Protocol (LCP) 394  Looped-Link Detection 394  Enhanced Error Detection 395  PPP Multilink 395  PPP Authentication 395 PPP Configuration and Verification 396 Basic PPP 396 CHAP 397 PAP 398 PPP Troubleshooting 398 PPPoE Concepts 399 PPPoE Configuration 399 PPPoE Configuration Example 400 PPPoE Troubleshooting 400 GRE Tunneling 401 GRE Characteristics 401 GRE Configuration and Verification 401 GRE Troubleshooting 403 BGP Concepts 403 eBGP Configuration and Verification 404 Study Resources 407 Day 3: QoS, Cloud, and SDN 409 CCNA 200-125 Exam Topics 409 Key Topics 409 QoS 409 Classification and Marking 410  DSCP and IPP 411  EF and AF 412 Congestion Management 413 Policing, Shaping, and TCP Discards 413 QoS and TCP 415 Cloud Computing 416 Server Virtualization 416 Cloud Computing Services 418 Virtual Network Infrastructure 419 Software-Defined Networking 419 Data, Control, and Management Planes 419 Controllers 421 SDN Examples 421  Open SDN and OpenFlow 421  The Cisco Application Centric Infrastructure 422  The Cisco APIC Enterprise Module (APIC-EM) 423 APIC-EM and ACLs 424 Study Resources 426 Day 2: Device Monitoring, Management, and Maintenance 427 CCNA 200-125 Exam Topics 427 Key Topics 427 SNMP Operation 427 SNMP Components 427 SNMP Messages 427 SNMP Versions 428 The Management Information Base 428 Configuring SNMP 430 Verifying SNMP 430 Syslog 432 Syslog Operation 432 Syslog Configuration and Verification 434 Network Time Protocol 436 Cisco IOS File System and Devices 437 IFS Commands 437 URL Prefixes for Specifying File Locations 440 Commands for Managing Configuration Files 440 Manage Cisco IOS Images 442 Backing Up a Cisco IOS Image 442 Restoring a Cisco IOS Image 443 Managing Cisco IOS Licenses 444 Password Recovery 448 Study Resources 449 Day 1: Troubleshooting Methodologies and Tools 451 CCNA 200-125 Exam Topics 451 Key Topics 451 Troubleshooting Documentation 451 Configuration Files 451 Topology Diagrams 452 Baseline Date 453 Troubleshooting Methods 454 Troubleshooting at Each Layer 455 Physical Layer 455 Data Link Layer 456 Network Layer 456 Transport Layer 457 Application Layer 458 Bottom-Up Method and the Layers 459 Troubleshooting with IP Service Level Agreement 459 Study Resources 462 Exam Day 465 What You Need for the Exam 465 What You Should Receive After Completion 465 Summary 465 Post-Exam Information 467 Receiving Your Certificate 467 Determining Career Options 467 Examining Certification Options 468 If You Failed the Exam 468 Summary 468     9781587205903   TOC   3/3/2017