Introduction 1
Chapter 1 Hierarchical Network Design 1
Hierarchical Topologies 2
Scalable Internetworks 8
Fault-Tolerant Topologies 12
Assessment Test 14
Summary 22
Review Questions 23
Answers to Review Questions 27
Chapter 2 Common Transport Standards 29
Ethernet 30
100BaseT Fast Ethernet 39
Gigabit Ethernet 42
Fiber Distributed Data Interface (FDDI) 44
Token Ring 45
Integrated Services Digital Network (ISDN) 48
LAPB (Link Access Procedure Balanced) 51
High-Level Data Link Control (HDLC) Protocol 51
Point-to-Point Protocol (PPP) 52
Frame Relay 54
Asynchronous Transfer Mode (ATM) 60
T1/E1 64
Summary 67
Review Questions 68
Answers to Review Questions 71
Chapter 3 Configuration and IOS Management Commands 73
Cisco Router User Interface 74
Managing Flash Files 100
Cisco Discovery Protocol (CDP) 106
Using an ACL to Control VTY Access 112
Configuring a Cisco Router as a Reverse-Telnet Access Server 113
Summary 115
Review Questions 115
Answers to Review Questions 119
Chapter 4 Integrated Services Digital Network (ISDN) 121
What Is Integrated Services Digital Network (ISDN)? 123
ISDN Line Options 124
ISDN Function Groups 127
ISDN Reference Points 128
ISDN Protocols 129
ISDN Configuration 137
Dial-on-Demand Routing (DDR) 144
Dial Backup 149
Channelized T1/E1 (PRI) 158
Summary 160
Review Questions 161
Answers to Review Questions 164
Chapter 5 Frame Relay and X.25 167
Packet-Switching Technologies 168
Frame Relay 171
X.25 Networks 190
Summary 194
Review Questions 196
Answers to Review Questions 200
Chapter 6 Fault Tolerance 203
Fault Tolerance on Multi-Access Segments 204
Redundant Links 217
Dial Backup 220
Summary 224
Review Questions 225
Answers to Review Questions 230
Chapter 7 Internet Protocol 233
TCP/IP and the DOD Model 234
IP Addressing 255
Subnetting 262
Supernetting 279
Classless Inter-Domain Routing (CIDR) 282
Private IP Addresses 290
Summary 291
Review Questions 293
Answers to Review Questions 295
Chapter 8 Interior Gateway Routing Protocols 299
Distance Vector Operation 300
Routing Information Protocol (RIP) 302
Interior Gateway Routing Protocol (IGRP) 307
Enhanced Interior Gateway Routing Protocol (EIGRP) 311
Intermediate System to Intermediate System (IS-IS) 314
Open Shortest Path First (OSPF) 316
Summary 324
Review Questions 325
Answers to Review Questions 328
Chapter 9 Border Gateway Protocol 331
When Should I Use BGP? 332
Autonomous System Types 334
When Shouldn t I Use BGP? 334
Routing Protocols 337
How BGP Works 339
BGP Update Messages 341
BGP Configuration 354
Scaling BGP and Advanced BGP Configurations 366
Filters 370
Creating BGP Policies 371
Distribute Lists 372
Prefix Lists 372
Route Maps 376
The COMMUNITIES Attribute 380
Route Reflectors 381
Configuring a Route Reflector 383
Confederations 385
Route Summarization for BGP 387
Advertising Networks into BGP 387
Summary 388
Review Questions 390
Answers to Review Questions 393
Chapter 10 IP Protocol Interaction 395
Administrative Distance 396
Route Filtering 400
Route Redistribution 401
Summary 407
Review Questions 408
Answers to Review Questions 412
Chapter 11 Network Address Translation (NAT) and Port Address Translation (PAT) 415
Understanding Network Address Translation (NAT) 417
NAT Operations 421
Configuring NAT 426
Port Address Translation (PAT) 434
Summary 437
Review Questions 438
Answers to Review Questions 441
Chapter 12 Multicast 443
Multicast Overview 444
Multicast Addressing 448
Managing Multicast in an Internetwork 452
Routing Multicast Traffic 458
Summary 472
Review Questions 473
Answers to Review Questions 476
Chapter 13 Overview of Cisco Multiservice 479
Interfaces and Signaling 481
Telecommunication Standards 488
Voice-over-Network Configuration 491
Quality of Service (QoS) Configuration 497
Summary 508
Review Questions 509
Answers to Review Questions 512
Chapter 14 Bridging 513
Bridging Overview 514
Transparent Bridging 517
Loop Avoidance 520
Concurrent Routing and Bridging 524
Integrated Routing and Bridging (IRB) 525
Source-Route Bridging (SRB) 527
Source-Route Transparent (SRT) Bridging 528
Remote Source-Route Bridging (RSRB) 531
RIF Calculation 532
Summary 536
Review Questions 537
Answers to Review Questions 541
Chapter 15 Data-Link Switching (DLSw+) 543
Why DLSw? 544
DLSw+ 547
Configuring DLSw+ 549
Summary 551
Review Questions 552
Answers to Review Questions 557
Chapter 16 Asynchronous Transfer Mode (ATM) 559
The ATM Protocol Model 560
Introduction to LAN Emulation 563
LEC Communication 570
LANE Implementation 573
Summary 580
Review Questions 581
Answers to Review Questions 584
Chapter 17 Desktop Protocols 587
AppleTalk 588
Internetwork Packet exchange (IPX) 595
DECnet 599
Windows NT Support 600
Summary 601
Review Questions 602
Answers to Review Questions 606
Chapter 18 Securing the Network 609
Authenticating the User 610
Granting Permissions 614
Recording Activity 617
Authentication, Authorization, and Accounting (AAA) 618
Encrypting Data 622
Summary 623
Review Questions 624
Answers to Review Questions 628
Chapter 19 LAN Switching 631
Campus Internetworks 632
Switching Technologies 638
Virtual LANs 643
Identifying VLANs 653
Trunking 656
Store-and-Forward vs. Cut-Through 659
VLAN Trunking Protocol (VTP) 661
Summary 671
Review Questions 671
Answers to Review Questions 675
Glossary 677