Cisco Routers for Ip Networking Black Book

The Need for a Communication Model  2

Multilayer Communication Model  5

OSI/RM  15

The Internet Communication Model  17

What Is the Maximum Size of a PDU?  19

The Internet Protocol Suite  20

The Internet Documentation  20

The Anatomy of Internet Protocol  22

IP Datagram Format  26

IP Addressing  34

Unicast IP Routing Model  46

Internet Control Message Protocol  61

Link Layer Addressing Considerations  65

Final Notes  67

Configuring IP Addressing on an Interface  70

Configuring a Frame Relay Interface  70

Performing Frame Relay Configuration on an Interface  71

Performing Frame Relay Configuration on a Subinterface  73

Understanding and Configuring a Loopback Interface  76

Understanding and Configuring a Tunnel Interface  77

Configuring IP Unnumbered  79

Configuring and Understanding ProxyARP  80

Using Access Lists to Filter Traffic  81

Using Standard Access Lists  81

Using Extended Access Lists  84

Using Named Access Lists  87

The Concept of Bridging  90

Why Do We Discuss Bridging?  91

MAC Addresses  92

Transparent Bridging  94

Source-Route Bridging  112

Configuring Transparent Bridging  126

Using a Single Bridge Group on a Single Router  126

Using Multiple Bridge Groups  129

Configuring Mixed-Media Transparent Bridging  131

Bridging over HDLC  132

Bridging over Frame Relay  134

Configuring CRB  137

Configuring IRB  139

Tuning the Spanning Tree Parameters  140

Configuring Source-Route Bridging  147

Configuring Source-Route Bridging for Two Interfaces  147

Configuring Source-Route Bridging Using a Virtual Ring  149

Understanding the multiring ip Command  150

Configuring RSRB  151

Configuring Spanning Explorers  167

Configuring Source-Route Translational Bridging  176

Understanding the ip routing Command  181

Using Connected Interfaces to Perform Basic Routing  181

Understanding the Administrative Distance of Connected Routes  182

Configuring Basic Static Routing  183

Changing the Administrative Distances of Static Routes  186

Using an Output Interface Instead of a Next-Hop Router in Static Routes  191

Configuring Classless Routing  195

Understanding the Longest Match Concept  198

Configuring a Default Route  200

Configuring Individual Host Routes  202

Configuring Equal-Cost Load Balancing Using Static Routing  203

Configuring Unequal-Cost Load Balancing Using Static Routing  208

Distance-Vector Algorithm  214

Routing Table Maintenance Rules Revisited  224

Classful and Classless Routing Protocols  225

Details of RIP  228

Understanding the Output of the show ip route Command  238

Modifying the Network Prefix Format  240

Understanding Candidate Default Routes and Gateways of Last Resort  242

Performing Basic RIP Configuration  249

Understanding How RIP Processes Routing Updates  252

Understanding the Relation between the Routing Table Contents and RIP
Routing Updates  257

Understanding RIP Auto-Summarization  259

Using Individual Host Addresses  261

Configuring RIP to Originate a Default Route  264

Understanding How RIP Handles Secondary IP Addresses  265

Understanding How RIP Handles IP Unnumbered  272

Making RIP Passive on an Interface  280

Using Unicast Routing Updates with RIP  282

Changing the Administrative Distance of RIP Routing Updates  287

Performing Equal-Cost Load Balancing with RIP  294

Changing RIP Metrics  297

Adjusting RIP Timers  299

Using RIP in the Presence of NBMA Networks  300

Configuring RIP Version 2  303

Disabling RIP Version 2 Auto-Summarization  305

Understanding How RIP Versions 1 and 2 Can Be Used Together  312

IGRP  316

Performing Basic IGRP Configuration  328

Understanding How IGRP Processes Routing Updates  331

Understanding How IGRP Handles Secondary IP Addresses  335

Understanding and Changing IGRP Metrics  341

Performing Equal- and Unequal-Cost Load Balancing with IGRP  344

Configuring IGRP to Originate a Default Route  349

Adjusting IGRP Timers  356

Modifying the IGRP Metric Weights  356

Diffusing Update Algorithm (DUAL)  358

Protocol Overview  368

EIGRP Metrics  368

DUAL in IP EIGRP  369

EIGRP Transport Protocols and Their PDUs  369

Performing Basic EIGRP Configuration  385

Understanding the show ip eigrp topology Command  391

Understanding the show ip eigrp neighbors Command  392

Understanding the Output of the show ip eigrp interfaces Command  393

Using the Extended network Command of IOS 12.0(X)T  394

Understanding Basic DUAL Operation  399

Understanding How EIGRP Handles Secondary IP Addresses  408

Disabling EIGRP on an Interface  412

Understanding How EIGRP Works across NBMA Networks  412

Configuring Route Summarization with EIGRP  416

Modifying the Active Time  422

How Deep Is This "In Depth" Section?  427

Dijkstra’s Shortest-Path Algorithm  428

OSPF  431

Performing Basic OSPF Configuration–Single Area  477

Using the router-id Command to Change the OSPF Router ID  483

Understanding the show ip ospf interface Command  484

Understanding the show ip ospf neighbor Command  485

Displaying the OSPF Link-State Database  486

Modifying OSPF Interface Costs  491

Using OSPF Router Priorities  492

Understanding How OSPF Handles IP Unnumbered  494

Understanding the neighbor Command  495

Performing Equal-Cost Load Balancing with OSPF  497

Configuring OSPF with Multiple Areas  497

Configuring OSPF to Originate the Default Gateway Route  506

Understanding the show ip ospf border-routers Command  507

Configuring OSPF Stub Areas  508

Understanding How OSPF Handles Secondary IP Addresses  510

Using Virtual Links to Connect Remote Areas  511

Using Virtual Links to Restore a Partitioned Backbone  517

Configuring OSPF over NBMA Networks  522

Configuring OSPF over Fully Meshed NBMA Networks  523

Configuring OSPF over Non-Fully Meshed NBMA Networks  526

Redistribution  536

Filtering Routing Information  553

Understanding the Interoperation of Routing Protocols without Redistribution  556

Understanding and Using Redistribution of Routing Information  563

Configuring Basic Redistribution  563

Understanding Summarization when Redistributing into RIP and IGRP  568

Understanding and Configuring Redistribution Metrics  572

Using and Understanding One-Way Redistribution  573

Understanding the Automatic Redistribution of Pseudo-Connected Routes into
IGRP and RIP  578

Understanding Redistribution into EIGRP  581

Understanding and Using Redistribution between EIGRP and IGRP  586

Understanding the Specifics of Redistribution into OSPF  591

Filtering Routing Information  607

Filtering Routing Updates Using Access Lists  607

Filtering Routing Updates Using Prefix Lists  612

Filtering Routing Information during Redistribution  617

Filtering Routing Information during Redistribution Using Route Maps  619

Understanding Routing Loops  623

Understanding Routing Loops Emerging from a Single Redistribution Point  623

Understanding Routing Loops Emerging from Multiple Redistribution Points  629

Understanding Routing Loops Emerging from Redistribution and Disabled
Split-Horizon Rule  633

Policy-Based Routing  640

NAT  642

HSRP  645

Configuring Policy-Based Routing  657

Using Policy-Based Routing for Routing over a Dedicated Link  658

Using Application-Sensitive Policy-Based Routing  664

Using Policy-Based Routing in Migration Scenarios  667

Configuring NAT  672

Configuring Static Translation of Inside IP Addresses  672

Configuring Dynamic Translation of Inside IP Addresses  677

Configuring NAT with Overloading Global Inside IP Addresses  687

Configuring NAT to Translate between Overlapping Address Spaces  689

Configuring NAT for TCP Load Balancing  692

Configuring HSRP  696

Configuring Basic HSRP  696

Using MHSRP for Load Balancing  702

Using HSRP in Backup Scenarios  706