Mcgraw hill all in one cisco ccie lab study guide second edition

Table of Contents
All−in−One Cisco CCIE Lab Study Guide, Second Edition 1
Chapter 1: Take the Lab Once and Pass 3
Overview 3
CCIE Lab Exams 3
CCIE Routing and Switching Lab Locations 3
Format of the Book 4
Chapter Format 4
Lab Format 5
CD−ROM 5
Chapter 2: Terminal Servers 6
Overview 6
Introduction 6
Out−of−Band Network Management 6
Commands Discussed in This Chapter 7
Definitions 7
Lab #1: Basic Terminal Server Configuration 7
Equipment Needed 7
Connecting the Terminal Server 7
Basic Terminal Server Configuration 7
Terminal Server Configuration 8
Connecting to a Port 9
Mapping a Host Name to an IP Address 9
Absolute Versus Relative Line Numbers 9
Exiting a Reverse Telnet Session 10
Troubleshooting 11
Displaying Active Sessions 11
Switching Between Sessions 11
Disconnecting a Session 12
Clearing a Line 12

Displaying the Status of a Line 12
Conclusion 13
Chapter 3: ISDN 14
Overview 14
Introduction 14
ISDN Technology Overview 14
ISDN Switches 15
ISDN BRI 16
ISDN PRI 17
ISDN Bearer Capability 17
The ISDN Protocol Stack 17
Layer 2 Link Layer Establishment 19
Layer 2 Link Layer Status Checks 21
ISDN Layer 3 Signaling 22
ISDN Configuration 27
ISDN with Non−ISDN−Equipped Routers 27
Commands Discussed in This Chapter 28
Definitions 28
IOS Requirements 30
ISDN Switch Configuration 30
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Table of Contents
Chapter 3: ISDN
Lab #2: ISDN Basics and Switch Basics 32
Equipment Needed 32
Configuration Overview 32
ISDN Switch Setup 32
Router Configuration 32
RouterA 32
RouterB 33

Monitoring and Testing the Configuration 34
Lab #3: Backup Interfaces 38
Equipment Needed 38
Configuration Overview 38
ISDN Switch Setup 39
Router Configuration 39
RouterA 39
Router B 40
Monitoring and Testing the Configuration 41
Router A Configuration for interface S0/0 47
Lab #4: Floating Static Routes 49
Equipment Needed 49
Configuration Overview 50
ISDN Switch Setup 50
Router Configuration 50
RouterA 50
RouterB 51
Monitoring and Testing the Configuration 52
Lab #5: Dialer Profiles 61
Equipment Needed 61
Configuration Overview 61
ISDN Switch Setup 61
Router Configuration 61
RouterA 61
RouterB 62
Monitoring and Testing the Configuration 63
Lab #6: ISDN BRI to ISDN PRI 67
Equipment Needed 67
Configuration Overview 67
ISDN Switch Setup 67

Router Configuration 67
RouterA 67
RouterB 68
Monitoring and Testing the Configuration 69
Lab #7: Snapshot Routing 77
Equipment Needed 77
Configuration Overview 77
ISDN Switch Setup 77
Router Configuration 78
RouterA 78
RouterB 79
Monitoring and Testing the Configuration 79
Lab #8: OSPF Demand Circuits 82
Equipment Needed 82
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Chapter 3: ISDN
Configuration Overview 83
ISDN Switch Setup 83
Router Configuration 83
RouterA 83
RouterB 84
Monitoring and Testing the Configuration 85
Lab #9: PPP Callback 89
Equipment Needed 89
Configuration Overview 89
ISDN Switch Setup 89
Router Configuration 89
RouterA 89
RouterB 90

Monitoring and Testing the Configuration 91
Lab #10: Dialer Watch 94
Equipment Needed 94
Configuration Overview 94
ISDN Switch Setup 95
Router Configuration 95
RouterA 95
RouterB 96
Monitoring and Testing the Configuration 97
Lab #11: ISDN Troubleshooting 99
Equipment Needed 100
Configuration Overview 100
ISDN Switch Setup 100
Router Configuration 100
RouterA 100
RouterB 101
Monitoring and Testing the Configuration 102
Conclusion 114
Chapter 4: Frame Relay 115
Overview 115
Introduction 115
Frame Relay Technology Overview 115
The Justification for Frame Relay 115
What Is Frame Relay 116
Frame Relay Terminology 117
Frame Relay Addressing 117
Frame Relay Frame Format 118
Frame Relay Congestion Control 120
Frame Relay Error Handling 120
Frame Relay Class of Service 120

Local Management Interface 121
Status Request from the Router to the Frame Relay Switch 122
Status Reply from the Frame Relay Switch to Router 123
Full Status Request from the Router to the Frame Relay Switch 123
Full Status Reply from the Frame Relay Switch to the Router 124
Asynchronous Status Updates 124
Status Request from the Router to the Frame Relay Switch 125
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Chapter 4: Frame Relay
Status Reply from the Frame Relay Switch to the Router 125
Asynchronous Update from the Frame Relay Switch to the Router 126
Status Request from the Router to the Frame Relay Switch 126
Inverse Address Resolution Protocol (Inverse ARP) 127
Inverse ARP Request 127
Inverse ARP Reply 128
Cisco Frame Relay Capabilities 128
Frame Relay Switching 129
IETF and Cisco Encapsulation 129
Traffic Shaping 130
DE Support 131
BECN Support 131
Payload Compression 131
LMI Autosense 131
Commands Discussed in This Chapter 131
Definitions 132
IOS Requirements 133
Lab #12: Configuring a Cisco Routeras a Frame Relay Switch 133
Equipment Needed 134
Configuration Overview 134

Router Configuration 134
RouterA (Frame Relay DTE) 134
RouterB (Frame Relay DTE) 135
FrameSwitch (Frame Relay Switch) 135
Monitoring and Testing the Configuration 137
Lab #13: Configuring LMI Autosense 141
Equipment Needed 141
Configuration Overview 141
Router Configuration 141
Frameswitch 141
Router B 142
Monitoring and Testing the Configuration 142
Demonstrating the Configuration 144
Annex D Request from RouterB to FrameSwitch 144
Annex A Request from RouterB to FrameSwitch 145
Cisco LMI Request from RouterB to FrameSwitch 145
FrameSwitch Response to RouterB Cisco LMI Status Request 146
Lab #14: Configuring Cisco Discard Eligibility Support 146
Equipment Needed 146
Configuration Overview 146
Router Configuration 147
FrameSwitch (Frame Relay Switch) 147
RouterA (Frame Relay DTE) 148
RouterB (Frame Relay DTE) 148
Monitoring and Testing the Configuration 148
Lab #15: Frame Relay Map Statements 153
Equipment Needed 153
Configuration Overview 153
Router Configuration 153
FrameSwitch (Frame Relay Switch) 153

RouterA (Frame Relay DTE) 154
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Chapter 4: Frame Relay
RouterB (Frame Relay DTE) 155
Monitoring and Testing the Configuration 155
Lab #16: Full Connectivity witha Partial PVC Mesh and FrameRelay Map Statements 159
Equipment Needed 159
Configuration Overview 159
Router Configuration 160
FrameSwitch (Frame Relay Switch) 160
RouterA (Frame Relay DTE) 161
RouterB (Frame Relay DTE) 161
RouterC (Frame Relay DTE) 162
Monitoring and Testing the Configuration 162
Lab #16: Full Connectivity witha Partial PVC Mesh and FrameRelay Map Statements 167
Equipment Needed 167
Configuration Overview 168
Router Configuration 168
FrameSwitch (Frame Relay Switch) 168
RouterA (Frame Relay DTE) 169
RouterB (Frame Relay DTE) 169
RouterC (Frame Relay DTE) 170
Monitoring and Testing the Configuration 170
Lab #17: Full Connectivity with a Partial PVC Mesh and Subinterfaces 176
Equipment Needed 176
Configuration Overview 176
Router Configuration 177
FrameSwitch (Frame Relay Switch) 177
RouterA (Frame Relay DTE) 177

RouterB (Frame Relay DTE) 178
RouterC (Frame Relay DTE) 178
Monitoring and Testing the Configuration 179
Lab #18: Frame Relay Traffic Shaping 184
Equipment Needed 184
Configuration Overview 184
Router Configuration 184
FrameSwitch (Frame Relay Switch) 184
RouterA (Frame Relay DTE) 185
RouterB (Frame Relay DTE) 185
Monitoring and Testing the Configuration 186
Lab #19: Monitoring and Troubleshooting Frame Relay Connections 190
Equipment Needed 190
Configuration Overview 190
Router Configuration 190
FrameSwitch (Frame Relay Switch) 190
RouterA (Frame Relay DTE) 191
RouterB (Frame Relay DTE) 191
Monitoring and Testing the Configuration 192
Conclusion 196
Chapter 5: Asynchronous Transfer Mode (ATM) 197
Overview 197
Introduction 197
ATM Overview 197
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Chapter 5: Asynchronous Transfer Mode (ATM)
ATM Protocol Stack 198
ATM Cell Basic Format 199
ATM Cell Header 199

ATM Addressing 200
Components of an ATM Network 200
ATM Physical Interfaces 201
ATM Call Types 201
ATM Switching Operation 201
ATM Classes of Service 202
ATM Quality of Service (QOS) 202
ATM with a Non−ATM Device 202
ATM LANE 203
Cisco ATM Capabilities 204
Commands Discussed in This Chapter 204
Definitions 205
IOS Requirements 205
Lab #20: ATM Configuration on a Cisco 4500 206
Equipment Needed 206
Configuration Overview 206
Router Configuration 206
RouterA 206
RouterB 207
Monitoring and Testing the Configuration 207
Lab #21: ATM Loopbacks on a Cisco 4500 210
Equipment Needed 210
Configuration Overview 210
Router Configuration 211
RouterA 212
RouterB 212
Monitoring and Testing the Configuration Loopback Diagnostic 213
Loopback Line 216
Lab #22: ATM LANE 218
Equipment Needed 218

Configuration Overview 218
Router and Switch Configuration 218
RouterA 219
RouterB 219
LS1010 220
Monitoring and Testing the Configuration 221
Troubleshooting ATM 223
Conclusion 224
Chapter 6: Routing Information Protocol 225
Overview 225
Introduction 225
Technology Overview 225
Routing Loops 226
RIP Message Format 228
Commands Discussed in This Chapter 228
Definitions 229
IOS Requirements 229
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Chapter 6: Routing Information Protocol
Lab #23: Basic RIP Configuration 229
Equipment Needed 229
Configuration Overview 230
Router Configurations 230
RouterA 230
RouterB 231
RouterC 231
Monitoring and Testing the Configuration 232
Lab #24: Passive Interface Configuration 233
Equipment Needed 233

Configuration Overview 233
Router Configurations 234
RouterA 234
RouterB 234
RouterC 235
Monitoring and Testing the Configuration 235
Lab #25: RIP Timer Configurations 236
Equipment Needed 236
Configuration Overview 236
Router Configurations 237
RouterA 237
RouterB 238
RouterC 239
Monitoring and Testing the Configuration 239
Lab #26: Configuring Unicast RIP Updates 241
Equipment Needed 241
Router Configurations 241
RouterA 241
Monitoring and Testing the Configuration 242
Lab #27: RIP and Discontiguous Networks 242
Equipment Needed 242
Router Configurations 243
RouterA 243
RouterB 243
Monitoring and Testing the Configuration 244
Troubleshooting RIP 245
Conclusion 246
Chapter 7: Interior Gateway Routing Protocol 248
Overview 248
Introduction 248

Technology Overview 248
Routing Loops 248
Split Horizon 248
Poison Reverse 249
Holddown 249
Flash Updates 250
IGRP Routes 250
Commands Discussed in This Chapter 250
Definitions 250
IOS Requirements 251
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Chapter 7: Interior Gateway Routing Protocol
Lab #28: Basic IGRP Configuration 251
Equipment Needed 251
Configuration Overview 252
Router Configurations 252
RouterA 252
RouterB 252
RouterC 253
Monitoring and Testing the Configuration 254
Lab #28: Basic IGRP Configuration 255
Equipment Needed 255
Configuration Overview 255
Router Configurations 256
RouterA 256
RouterB 256
RouterC 257
Monitoring and Testing the Configuration 257
Lab #29: Passive Interface Configuration 259

Equipment Needed 259
Configuration Overview 259
Router Configurations 260
RouterA 260
RouterB 261
RouterC 261
Monitoring and Testing the Configuration 262
Lab #30: IGRP Unequal−Cost Load Balancing 263
Equipment Needed 263
Overview 263
Configuration Overview 264
Router Configurations 264
RouterA 264
RouterB 265
RouterC 265
Monitoring and Testing the Configuration 266
Lab #31: IGRP Timer Configurations 267
Equipment Needed 267
Configuration Overview 267
Router Configurations 268
RouterA 268
RouterB 269
RouterC 270
Monitoring and Testing the Configuration 270
Lab #32: Configuring Unicast IGRP Updates 271
Equipment Needed 271
Router Configurations 271
RouterA 271
Monitoring and Testing the Configuration 272
Troubleshooting IGRP 272

Conclusion 274
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Chapter 8: OSPF 275
Overview 275
Introduction 275
OSPF Terminology 275
Technology Overview 276
Link State Routing Protocol 276
Flooding 277
Dijkstra Algorithm 277
Areas 277
Backbone Area 0 277
Designated Router (DR) 278
OSPF Protocol Packets 278
Link State Advertisements 279
Router Link 279
Network Link 280
Summary Link 280
External Link 280
How It Works 280
How an Adjacency Is Formed 281
Sniffer Trace of Database Synchronization 282
OSPF Network Types 287
Broadcast 287
Non−Broadcast 288
Point−to−Point 289
Point−to−Multipoint 289
Commands Discussed in This Chapter 289
Definitions 290

IOS Requirements 292
Lab #33: Basic OSPF Configuration 292
Equipment Needed 292
Configuration Overview 292
Enabling OSPF 292
Router Configurations 293
RouterA 293
RouterB 293
Monitoring and Testing the Configuration 294
Lab #34: Configuring OSPF Priority "DR Election" 296
Equipment Needed 296
Configuration Overview 296
Router Configurations 296
RouterA 296
RouterB 297
RouterC 298
RouterD 298
Monitoring and Testing the Configuration 299
Lab #35: Configuring OSPF Virtual Links 300
Equipment Needed 300
Configuration Overview 301
Router Configurations 301
RouterA 301
RouterB 302
RouterC 302
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Chapter 8: OSPF
Monitoring and Testing the Configuration 303
Lab #36: Configuring OSPF Neighbor Authentication 305

Equipment Needed 305
Overview 305
Configuration Overview 305
Router Configurations 306
RouterA 306
RouterB 307
RouterC 308
Monitoring and Testing the Configuration 308
Lab #37: Configuring OSPF on NBMA Network "Non−Broadcast Model" 309
Equipment Needed 309
Overview 309
Configuration Overview 310
Router Configurations 310
FrameSwitch 310
RouterA 311
RouterB 312
RouterC 312
Monitoring and Testing the Configuration 313
Lab #38: Configuring OSPF on NBMA Network "Broadcast Model" 316
Equipment Needed 316
Overview 316
Configuration Overview 316
Router Configurations 316
FrameSwitch 317
RouterA 317
RouterB 318
RouterC 319
Monitoring and Testing the Configuration 320
Lab #39: Configuring OSPF on NBMA Network "Point−to−Multipoint Model" 322
Equipment Needed 322

Overview 322
Configuration Overview 322
Router Configurations 323
FrameSwitch 323
RouterA 324
RouterB 324
RouterC 325
Monitoring and Testing the Configuration 326
Lab #40: Configure OSPF Interface Parameters 326
Equipment Needed 326
Overview 327
Configuration Overview 327
Router Configurations 327
RouterA 327
RouterB 328
RouterC 329
Monitoring and Testing the Configuration 329
Lab #41: Inter−Area and External Route Summarization 331
Equipment Needed 331
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Table of Contents
Chapter 8: OSPF
Overview 332
Configuration Overview 332
Router Configurations 332
RouterA 332
RouterB 333
RouterC 334
RouterD 334
RouterE 335

Monitoring and Testing the Configuration 335
Lab #42: Regular, Stub, Totally Stub, and NSSA Areas 338
Equipment Needed 338
Overview 338
Configuration Overview 338
Router Configurations 339
RouterA 339
RouterB 340
RouterC 340
RouterD 341
RouterE 341
Monitoring and Testing the Configuration 342
Troubleshooting OSPF 345
Conclusion 348
Chapter 9: Enhanced Interior Gateway Routing Protocol 349
Overview 349
Introduction 349
EIGRP Terminology 349
Technology Overview 351
EIGRP Metrics 351
IOS Requirements 353
Commands Discussed in This Chapter 353
Definitions 354
Lab #43: Basic EIGRP Configuration 355
Equipment Needed 355
Configuration Overview 355
Router Configurations 355
RouterA 355
RouterB 356
RouterC 356

Monitoring and Testing the Configuration 357
Lab #44: Passive Interface Configuration 360
Equipment Needed 360
Configuration Overview 361
Router Configurations 361
RouterA 361
RouterB 362
RouterC 362
Monitoring and Testing the Configuration 363
Lab #45: EIGRP Unequal−Cost Load Balancing 365
Equipment Needed 365
Overview 365
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Chapter 9: Enhanced Interior Gateway Routing Protocol
Configuration Overview 365
Router Configurations 366
RouterA 366
RouterB 366
RouterC 367
Monitoring and Testing the Configuration 367
Lab #46: EIGRP Timer Configuration 369
Equipment Needed 369
Overview 369
Configuration Overview 370
Router Configurations 370
RouterA 370
RouterB 371
Monitoring and Testing the Configuration 371
Lab #47: Configuring EIGRP on an NBMA Network 372

Equipment Needed 372
Overview 373
Configuration Overview 373
Router Configurations 373
FrameSwitch 373
RouterA 374
RouterB 375
RouterC 375
Monitoring and Testing the Configuration 376
Troubleshooting EIGRP 377
Conclusion 378
Chapter 10: Border Gateway Protocol (BGP) 380
Overview 380
Introduction 380
BGP Terminology 381
Technology Overview 382
BGP Neighbor Negotiation 383
BGP Message Format 384
Open Message Format 384
Update Message Format 385
KeepAlive Message Format 388
Notification Message Format 388
Commands Discussed in This Chapter 389
Definitions 390
IOS Requirements 392
Lab #48: BGP Configuration 392
Equipment Needed 392
Configuration Overview 393
Router Configurations 393
RouterA 393

RouterB 394
RouterC 394
Monitoring and Testing the Configuration 395
BGP Summarization 398
BGP Aggregation 399
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Chapter 10: Border Gateway Protocol (BGP)
Router Configurations 400
RouterA 400
RouterB 401
RouterD 401
Lab #49: BGP Route Reflectors 403
Equipment Needed 403
Route Reflector Overview 403
Configuration Overview 404
Router Configurations 404
RouterA 404
RouterB 405
RouterC 406
RouterD 406
Monitoring and Testing the Configuration 407
Lab #50: Manipulating BGP Path Selection 409
Equipment Needed 409
BGP Path Selection Overview 409
Configuration Overview 410
Router Configurations 410
RouterA 410
RouterB 411
RouterC 411

RouterD 412
Monitoring and Testing the Configuration 413
Local Preference Attribute 414
The Multi−Exit Discriminator (MED) Attribute 415
AS Path Manipulation 417
Route Filtering Based on Network Number 418
BGP Soft Configuration 418
Regular Expressions 419
Filtering Based on AS Path 419
Lab #51: BGP Confederations 421
Equipment Needed 421
Configuration Overview 421
Router Configurations 423
RouterA 423
RouterB 423
RouterC 424
RouterD 425
RouterE 425
Monitoring and Testing the Configuration 426
Lab #52: BGP Communities 428
Equipment Needed 428
Configuration Overview 428
Router Configurations 429
RouterA 429
RouterB 429
RouterC 430
RouterD 431
RouterE 432
Monitoring and Testing the Configuration 432
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Chapter 10: Border Gateway Protocol (BGP)
Lab #53: BGP Backdoor Links 435
Equipment Needed 435
Configuration Overview 436
Router Configurations 436
RouterA 437
RouterB 437
RouterC 438
RouterD 439
RouterE 439
Monitoring and Testing the Configuration 440
Troubleshooting BGP 441
Conclusion 442
Chapter 11: Route Redistribution 443
Overview 443
Introduction 443
Commands Discussed in This Chapter 443
Definitions 443
IOS Requirements 444
Lab #54: Redistributing RIP and IGRP 444
Equipment Needed 444
Configuration Overview 444
Router Configurations 444
RouterA 444
RouterB 445
RouterC 446
RouterD 446
Monitoring and Testing the Configuration 447
Lab #55: Redistributing IGRP and EIGRP 451

Equipment Needed 451
Configuration Overview 451
Router Configurations 452
RouterA 452
RouterB 452
RouterC 453
RouterD 453
Monitoring and Testing the Configuration 454
Lab #56: Redistributing RIP and OSPF 455
Equipment Needed 455
Configuration Overview 456
Router Configurations 456
RouterA 456
RouterB 457
RouterC 457
RouterD 458
Monitoring and Testing the Configuration 458
Lab #57: Redistributing IGRP and OSPF 463
Equipment Needed 463
Configuration Overview 463
Router Configurations 463
RouterA 463
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Chapter 11: Route Redistribution
RouterB 464
RouterC 464
RouterD 465
Monitoring and Testing the Configuration 466
Troubleshooting Route Redistribution 470

Conclusion 471
Chapter 12: IP Access Lists 472
Overview 472
Introduction 472
Overview 472
Access List Terminology 472
Commands Discussed in This Chapter 473
Definitions 474
IOS Requirements 475
Lab #58: Standard IP Access Lists 475
Equipment Needed 475
Configuration Overview 475
Router Configurations 476
RouterA 476
RouterB 476
Monitoring and Testing the Configuration 477
Lab #59: Extended IP Access Lists 478
Equipment Needed 478
Configuration Overview 478
Router Configurations 478
RouterA 478
RouterB 479
Monitoring and Testing the Configuration 480
Lab #60: Extended Access List with Established Option 480
Equipment Needed 480
Overview 481
Configuration Overview 481
Router Configurations 482
RouterA 482
RouterB 483

Monitoring and Testing the Configuration 483
Lab #61: Dynamic IP Access Lists 484
Equipment Needed 484
Overview 484
How Lock−and−Key Works 485
Configuration Overview 485
Router Configurations 485
RouterA 485
RouterB 486
Monitoring and Testing the Configuration 487
Lab #62: Controlling VTY Access 488
Equipment Needed 488
Overview 488
Configuration Overview 488
Router Configurations 489
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Chapter 12: IP Access Lists
RouterA 489
RouterB 489
Monitoring and Testing the Configuration 490
Lab #63: Time−of−Day Access Lists 490
Equipment Needed 490
Configuration Overview 491
Router Configurations 491
RouterA 491
RouterB 492
Monitoring and Testing the Configuration 492
Troubleshooting IP Access Lists 493
Conclusion 494

Chapter 13: Policy−based Routing 495
Overview 495
Introduction 495
Policy Routing Overview 495
Policy Routing Terminology 496
Commands Discussed in This Chapter 496
Definitions 496
IOS Requirements 497
Lab #64: Policy Routing Based on Source IP address 498
Equipment Needed 498
Configuration Overview 498
Router Configurations 498
RouterA 498
RouterB 499
Monitoring and Testing the Configuration 500
Lab #65: Policy Routing Basedon Packet Size 501
Equipment Needed 502
Configuration Overview 502
Router Configurations 502
RouterA 502
RouterB 503
Monitoring and Testing the Configuration 504
Lab #66: Policy Routing Based on Application 504
Equipment Needed 504
Configuration Overview 505
Router Configurations 505
RouterA 505
RouterB 506
Monitoring and Testing the Configuration 507
Lab #67: Load Balancing Across Default Routes 507

Equipment Needed 507
Configuration Overview 507
Router Configurations 508
RouterA 508
RouterB 508
RouterC 509
Monitoring and Testing the Configuration 509
Troubleshooting Policy Routing 510
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Chapter 13: Policy−based Routing
Conclusion 511
Chapter 14: Cisco Discovery Protocol 512
Overview 512
Introduction 512
Cisco Discovery Protocol Overview 512
How Does CDP Work? 512
Commands Discussed in This Chapter 513
Definitions 513
IOS Requirements 514
Lab #68: Cisco CDP WAN Example 514
Equipment Needed 514
Configuration Overview 514
Router Configuration 515
RouterA 515
RouterB 515
RouterC 516
Monitoring and Testing the Configuration 516
CDP Debug Commands 518
Lab #69: Cisco CDP LAN Example 519

Equipment Needed 519
Configuration Overview 520
Router Configuration 520
RouterA 520
RouterB 520
RouterC 521
Monitoring and Testing the Configuration 521
Conclusion 521
Chapter 15: Network Address Translation 523
Overview 523
Introduction 523
Network Address Translation Overview 523
NAT Terminology 524
Commands Discussed in This Chapter 524
Definitions 525
IOS Requirements 525
Lab #70: Static Inside Source Address Translation 525
Equipment Needed 525
Configuration Overview 525
Router Configurations 526
RouterA 526
RouterB 527
Monitoring and Testing the Configuration 527
Lab #71: Dynamic Inside Source Address Translation 528
Equipment Needed 528
Overview 528
Configuration Overview 529
Router Configurations 529
RouterA 530
RouterB 530

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Table of Contents
Chapter 15: Network Address Translation
Monitoring and Testing the Configuration 531
Lab #72 Overloading an Inside Global Address 531
Equipment Needed 531
Overview 532
Configuration Overview 533
Router Configurations 533
RouterA 533
RouterB 534
Monitoring and Testing the Configuration 534
Lab #73: Translating Overlapping Addresses 535
Equipment Needed 535
Overview 535
Configuration Overview 536
Router Configurations (Static Mapping) 536
RouterA 536
RouterB 537
Router Configurations (Dynamic Mapping) 537
RouterA 537
RouterB 538
Monitoring and Testing the Configuration 538
Lab #74: Destination Address Rotary Translation 539
Equipment Needed 539
Overview 539
Configuration Overview 540
Router Configurations 540
RouterA 541
RouterB 541

Monitoring and Testing the Configuration 542
Changing Translation Timeouts 542
Troubleshooting NAT 543
Conclusion 544
Chapter 16: Hot Standby Router Protocol 545
Overview 545
Introduction 545
Overview 545
Commands Discussed in This Chapter 545
Definitions 546
IOS Requirements 546
Lab #75: Basic HSRP Configuration (One HSRP Group) 546
Equipment Needed 546
Router Configuration 547
RouterA 547
RouterB 547
Monitoring and Testing the Configuration 548
Basic HSRP Configuration Usingthe Track Option 548
Router Configuration 549
RouterA 549
Lab #76: Multigroup HSRP Configuration 550
Equipment Needed 550
Overview 550
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Chapter 16: Hot Standby Router Protocol
Router Configuration 550
RouterA 551
RouterB 551
Monitoring and Testing the Configuration 552

Troubleshooting HSRP 552
Conclusion 552
Chapter 17: Network Time Protocol 553
Overview 553
Introduction 553
Network Time Protocol (NTP) Overview 553
How Does NTP Work? 553
NTP Implementation 554
Commands Discussed in This Chapter 555
Definitions 555
IOS Requirements 556
Lab #77: Cisco NTP Using Time Servers 556
Equipment Needed 556
Configuration Overview 556
Router Configuration 557
RouterA 557
RouterB 557
RouterC 558
Monitoring the Configuration 559
Lab #78: Cisco NTP Using Time Servers and Peers 560
Equipment Needed 560
Configuration Overview 560
Router Configuration 560
RouterA 560
RouterB 561
RouterC 562
Monitoring the Configuration 562
Lab #79: Cisco NTP with Authentication 563
Equipment Needed 563
Configuration Overview 563

Router Configuration 564
RouterA 564
RouterB 565
Monitoring the Configuration 566
Lab #80: Cisco NTP Using LAN Broadcasts 567
Equipment Needed 567
Configuration Overview 567
NTP Packet Capture 568
Router Configuration 568
RouterA 568
RouterB 569
RouterC 569
Monitoring the Configuration 570
Conclusion 571
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Chapter 18: Novell IPX 572
Overview 572
Introduction 572
Novell IPX Overview 572
IPX Addressing 572
IPX Protocol Stack 573
SAP (Service Advertising Protocol) 573
IPX Routing Protocols 574
RIP/SAP Operation 574
IPX Encapsulation Types 574
Commands Discussed in This Chapter 575
Definitions 576
IOS Requirements 577
Lab #81: IPX Configuration with IPX RIP/SAP 577

Equipment Needed 577
Configuration Overview 577
Router Configuration 578
RouterA 578
RouterB 578
RouterC 579
Monitoring and Testing the Configuration 579
Lab #82: IPX EIGRP 586
Equipment Needed 586
Configuration Overview 586
Router Configuration 587
RouterA 587
RouterB 588
RouterC 588
Monitoring and Testing the Configuration 589
Lab #83: Static SAP Entries andSAP Access Lists 592
Equipment Needed 592
Configuration Overview 592
Router Configuration 593
RouterA 593
RouterB 594
RouterC 594
Monitoring and Testing the Configuration 595
Lab #84: IPX Configuration Over a Frame Relay Core 601
Equipment Needed 601
Configuration Overview 601
Router Configuration 602
RouterA 602
RouterB 603
RouterC 603

FrameSwitch 604
Monitoring and Testing the Configuration 605
Lab #85: IPX Dial Backup 606
Equipment Needed 606
Configuration Overview 607
ISDN Switch Setup 607
Router Configuration 607
RouterA 607
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Chapter 18: Novell IPX
RouterB 608
Monitoring and Testing the Configuration 609
IPX Monitoring and Troubleshooting Commands 612
Conclusion 616
Chapter 19: AppleTalk 617
Overview 617
Introduction 617
AppleTalk Terminology 617
AppleTalk Addressing 618
AppleTalk Protocol Stack 618
Physical and Datalink Layers 619
Network Layer 619
Transport Layer 619
Session Layer 620
Application/Presentation Layer 620
AppleTalk Routing Protocols 620
AppleTalk Zones 620
Commands Discussed in This Chapter 621
Definitions 621

IOS Requirements 622
Lab #86: Basic AppleTalk Configuration 622
Equipment Needed 623
Configuration Overview 623
Router Configuration 623
RouterA 623
RouterB 624
RouterC 625
Monitoring and Testing the Configuration 625
Lab #87: AppleTalk EIGRP Configuration 630
Equipment Needed 630
Configuration Overview 630
Router Configuration 631
RouterA 631
RouterB 631
RouterC 632
Monitoring and Testing the Configuration 633
Lab #88: AppleTalk GRE Tunnel 636
Equipment Needed 636
Configuration Overview 637
Router Configuration 637
RouterA 637
RouterB 638
RouterC 638
Monitoring and Testing the Configuration 639
Lab #89: AppleTalk Trafficand Zone Filtering 643
Equipment Needed 643
Configuration Overview 643
Router Configuration 643
RouterA 643

RouterB 644
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Chapter 19: AppleTalk
RouterC 645
Monitoring and Testing the Configuration 645
Lab #90: AppleTalk Configuration Over a Frame Relay Core 653
Equipment Needed 653
Configuration Overview 653
Router Configuration 654
RouterA 654
RouterB 654
RouterC 655
FrameSwitch 656
Monitoring and Testing the Configuration 656
Lab #91: AppleTalk Dial Backup with Floating Static Routes 657
Equipment Needed 657
Configuration Overview 657
ISDN Switch Setup 658
Router Configuration 658
RouterA 658
RouterB 659
Monitoring and Testing the Configuration 660
AppleTalk Monitoring and Troubleshooting Commands 663
Conclusion 668
Chapter 20: Catalyst 5000 Switches 669
Overview 669
Introduction 669
Catalyst 5000 Series Overview 669
Catalyst 5500 Product Overview 669

Catalyst Components 670
VLANs 670
Routing Between VLANs 672
Accessing the Catalyst 672
Catalyst Trunks 673
Catalyst Configuration 673
Commands Discussed in This Chapter 674
Definitions 675
IOS Requirements 675
Lab #92: Basic Catalyst Configuration, VLANs, and Port Security 675
Equipment Needed 676
Configuration Overview 676
Router Configuration 676
RouterA 676
RouterB 677
Monitoring and Testing the Configuration 677
IP Permit Lists 680
Secure Port Filtering 681
Lab #93: ISL Trunk with Routing Between VLANs 686
Equipment Needed 686
Configuration Overview 686
Router Configuration 686
RouterA 687
RouterB 687
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Table of Contents
Chapter 20: Catalyst 5000 Switches
RouterC 687
Monitoring and Testing the Configuration 688
Troubleshooting 691

Conclusion 697
Chapter 21: Loading the IOS Image on a Router 698
Overview 698
Introduction 698
Code Load Overview 698
Code Load Naming Conventions 699
Platform 700
Feature Sets 700
Where the IOS Image Runs From 702
Run from RAM and Run from Flash Routers 702
Commands Discussed in This Chapter 702
Definitions 703
IOS Requirements 703
Lab #94: Loading an IOS Image from a TFTP Server to a Run from RAM Router 703
Equipment Needed 703
Configuration Overview 703
Router Configuration 704
RouterA 704
Monitoring and Testing the Configuration 704
Lab #95: Loading an IOS Image from a TFTP Server to a Run from Flash Router 709
Equipment Needed 709
Configuration Overview 709
Router Configuration 709
RouterC 709
Monitoring and Testing the Configuration 710
Lab #96: Loading an IOS Image from Another Router 713
Equipment Needed 713
Configuration Overview 713
Router Configuration 714
RouterA (TFTP Server) 714

RouterB (TFTP Client) 714
Monitoring and Testing the Configuration 715
Troubleshooting TFTP Transferson a Cisco Router 717
Conclusion 718
Chapter 22: Cisco Password Recovery 719
Overview 719
Introduction 719
Password Recovery Overview 719
Configuration Register 719
Interpreting the Configuration Register 720
Breaking the Normal Router Startup Sequence 721
Commands Discussed in This Chapter 721
Definitions 722
IOS Requirements 722
Lab #97: Cisco 3600 Password Recovery 723
Equipment Needed 723
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Table of Contents
Chapter 22: Cisco Password Recovery
Configuration Overview 723
Password Recovery Procedures 723
Router 723
Lab #98: Cisco 2500 Password Recovery 728
Equipment Needed 728
Configuration Overview 728
Password Recovery Procedures 728
Lab #99: Cisco Catalyst 5000 Password Recovery 732
Equipment Needed 732
Configuration Overview 732
Password Recovery Procedures 732

Conclusion 734
Chapter 23: HTTP Access with a Cisco Router 735
Overview 735
Introduction 735
HTTP Overview 735
Commands Discussed in This Chapter 735
Definitions 735
IOS Requirements 736
Lab #100: Basic Configuration Without an Access List 736
Equipment Needed 736
Configuration Overview 736
Router Configuration 736
Cisco1 736
Cisco2 737
Monitoring and Testing the Configuration 738
Lab #101: Advanced Configurationwith an Access List 739
Configuration Overview 739
Router Configuration 739
Cisco1 739
Monitoring and Testing the Configuration 740
Troubleshooting HTTP 740
Conclusion 741
Chapter 24: Bridging and DLSW 742
Overview 742
Introduction 742
DLSW Overview 742
Commands Discussed in This Chapter 743
Definitions 743
IOS Requirements 744
Lab #102: Bridging with ISDN Dial Backup 744

Equipment Needed 744
Configuration Overview 744
Router Configuration 745
RouterA 745
RouterB 746
Monitoring and Testing the Configuration 747
Lab #103: DLSW Full Mesh 754
Equipment Needed 754
xxiv