BSCI Building Scalable Cisco Internetworks Volume 1 Version 3.0 Student Guide Editorial, Production, and Graphic Services: 06.14.06 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. 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The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. Students, this letter describes important course evaluation access information! Welcome to Cisco Systems Learning. Through the Cisco Learning Partner Program, Cisco Systems is committed to bringing you the highest-quality training in the industry. Cisco learning products are designed to advance your professional goals and give you the expertise you need to build and maintain strategic networks. Cisco relies on customer feedback to guide business decisions; therefore, your valuable input will help shape future Cisco course curricula, products, and training offerings. We would appreciate a few minutes of your time to complete a brief Cisco online course evaluation of your instructor and the course materials in this student kit. On the final day of class, your instructor will provide you with a URL directing you to a short post-course evaluation. If there is no Internet access in the classroom, please complete the evaluation within the next 48 hours or as soon as you can access the web. On behalf of Cisco, thank you for choosing Cisco Learning Partners for your Internet technology training. Sincerely, Cisco Systems Learning The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. Table of Contents Volume 1 Course Introduction 1 Overview 1 Learner Skills and Knowledge 1 Course Goal and Objectives 2 Course Flow 3 Additional References 4 Cisco Glossary of Terms 4 Your Training Curriculum 5 Network Requirements 1-1 Overview 1-1 Module Objectives 1-1 Describing Network Requirements 1-3 Overview 1-3 Objectives 1-3 Cisco Network Models 1-4 Enterprise Composite Network Model 1-8 Traffic Conditions in a Converged Network 1-10 Cisco SONA Framework and IIN 1-11 Routing and Routing Protocols 1-15 Summary 1-17 References 1-17 Configuring EIGRP 2-1 Overview 2-1 Module Objectives 2-1 Introducing EIGRP 2-3 Overview 2-3 Objectives 2-3 EIGRP Capabilities and Attributes 2-4 Underlying Processes and Technologies 2-6 EIGRP Operation 2-8 Example: EIGRP Tables 2-12 EIGRP Metric 2-15 Calculating the EIGRP Metric 2-16 Example: EIGRP Metric Calculation 2-18 Integrating the EIGRP and IGRP Routes 2-20 Summary 2-21 Implementing and Verifying EIGRP 2-23 Overview 2-23 Objectives 2-23 Configuring Basic EIGRP 2-24 Example: Configuring EIGRP for IP 2-27 Using a Wildcard Mask in EIGRP 2-29 Example: Wildcard Mask in EIGRP 2-29 Configuring the ip default-network Command 2-30 Example: ip default-network Command 2-31 Verify EIGRP IP Routes 2-32 Example: EIGRP Configuration 2-32 Example: R2 EIGRP Configuration 2-33 Verify EIGRP IP Operations 2-37 Summary 2-43 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. ii Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. Configuring Advanced EIGRP Options 2-45 Overview 2-45 Objectives 2-45 Route Summarization 2-46 Configuring Manual Route Summarization 2-49 Example: Summarizing EIGRP Routes 2-50 Example: Router C Routing Table 2-51 Load Balancing Across Equal Paths 2-52 Configuring Load Balancing Across Unequal-Cost Paths 2-53 Example: Variance 2-54 EIGRP Bandwidth Use Across WAN Links 2-56 Configuring EIGRP Bandwidth Use Across WAN Links 2-59 Example: WAN Configuration—Frame Relay Hub-and-Spoke Topology 2-59 Example: WAN Configuration–Hybrid Multipoint 2-61 Summary 2-62 Configuring EIGRP Authentication 2-63 Overview 2-63 Objectives 2-63 Router Authentication 2-64 MD5 Authentication 2-66 Configuring MD5 Authentication 2-68 Example: MD5 Authentication Configuration 2-73 Example: R1 Configuration for MD5 Authentication 2-74 Example: R2 Configuration for MD5 Authentication 2-75 Verifying MD5 Authentication 2-76 Troubleshooting MD5 Authentication 2-77 Example: Successful MD5 Authentication 2-77 Example: Troubleshooting MD5 Authentication Problems 2-78 Summary 2-79 Using EIGRP in an Enterprise Network 2-81 Overview 2-81 Objectives 2-81 Scalability in Large Networks 2-82 EIGRP Queries 2-83 EIGRP Stubs 2-84 Example: Limiting Updates and Queries: Using EIGRP Stub 2-88 Example: eigrp stub Parameters 2-89 SIA Connections 2-91 Preventing SIA Connections 2-92 Graceful Shutdown 2-94 Summary 2-96 Module Summary 2-97 Module Self-Check 2-99 Module Self-Check Answer Key 2-108 Configuring OSPF 3-1 Overview 3-1 Module Objectives 3-1 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. © 2006 Cisco Systems, Inc. Building Scalable Cisco Internetworks (BSCI) v3.0 iii Introducing the OSPF Protocol 3-3 Overview 3-3 Objectives 3-3 Link-State Routing Protocols 3-4 OSPF Area Structure 3-7 OSPF Adjacency Databases 3-10 Calculating the OSPF Metric 3-13 Example: SPF Calculation 3-14 Link-State Data Structures 3-15 Summary 3-16 OSPF Packet Types 3-17 Overview 3-17 Objectives 3-17 OSPF Packet Types 3-18 Establishing OSPF Neighbor Adjacencies 3-20 Exchanging and Synchronizing LSDBs 3-22 Maintaining Network Routes 3-26 Maintaining Link-State Sequence Numbers 3-28 Example: LSA Sequence Numbers and Maximum Age 3-29 Verifying Packet Flow 3-30 Example: debug ip ospf packet 3-30 Summary 3-32 Configuring OSPF Routing 3-33 Overview 3-33 Objectives 3-33 Configuring Basic Single-Area and Multiarea OSPF 3-34 Example: Configuring OSPF on Internal Routers of a Single Area 3-36 Example: Configuring OSPF for Multiple Areas 3-37 Configuring a Router ID 3-38 Verifying the OSPF Router ID 3-41 Verifying OSPF Operation 3-43 Example: The show ip route ospf Command 3-45 Example: The show ip ospf interface Command 3-46 Example: The show ip ospf neighbor Command 3-47 Summary 3-49 OSPF Network Types 3-51 Overview 3-51 Objectives 3-51 Introducing OSPF Network Types 3-52 Adjacency Behavior for a Point-to-Point Link 3-53 Adjacency Behavior for a Broadcast Network Link 3-54 Selecting the DR and BDR 3-56 Adjacency Behavior for an NBMA Network 3-58 OSPF over Frame Relay Configuration Options 3-60 Example: Sample Configuration of a Router Using OSPF Broadcast Mode 3-63 OSPF over Frame Relay NBMA Configuration 3-64 Example: neighbor Command 3-66 Example: show ip ospf neighbor Command 3-67 OSPF over Frame Relay Point-to-Multipoint Configuration 3-68 Example: Point-to-Multipoint Configuration 3-69 Using Subinterfaces in OSPF over Frame Relay Configuration 3-72 Example: Point-to-Point Subinterface 3-74 Example: Multipoint Subinterface 3-76 Example: OSPF over NBMA Topology Summary 3-77 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. iv Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. Tracking OSPF Adjacencies 3-78 Example: debug Output for Point-to-Point Mode 3-78 Example: debug ip ospf adj Output for Broadcast Mode 3-79 Summary 3-82 Link-State Advertisements 3-83 Overview 3-83 Objectives 3-83 OSPF Router Types 3-84 Example: OSPF Hierarchical Routing 3-85 OSPF Virtual Links 3-88 Example: OSPF Virtual Link Configuration 3-91 Example: show ip ospf virtual-links Command 3-92 OSPF LSA Types 3-95 Type 1 3-95 Type 2 3-95 Types 3 and 4 3-96 Type 5 3-96 Type 6 3-96 Type 7 3-96 Type 8 3-96 Types 9, 10, and 11 3-96 Example: LSA Type 4—Summary LSA 3-100 Interpreting the OSPF LSDB and Routing Table 3-102 Example: Interpreting the OSPF Database 3-102 Configuring OSPF LSDB Overload Protection 3-108 Changing the Cost Metric 3-110 Summary 3-111 OSPF Route Summarization 3-113 Overview 3-113 Objectives 3-113 OSPF Route Summarization 3-114 Example: Using Route Summarization 3-116 Configuring OSPF Route Summarization 3-117 Example: Route Summarization Configuration at ABR 3-119 Example: Route Summarization Configuration at ASBR 3-120 Benefits of a Default Route in OSPF 3-121 Example: Default Routes in OSPF 3-121 Configuring a Default Route in OSPF 3-122 Example: Default Route Configuration 3-124 Summary 3-125 Configuring OSPF Special Area Types 3-127 Overview 3-127 Objectives 3-127 Configuring OSPF Area Types 3-128 Configuring Stub Areas 3-130 Example: OSPF Stub Area Configuration 3-133 Configuring Totally Stubby Areas 3-134 Example: Totally Stubby Configuration 3-136 Interpreting Routing Tables 3-137 Example: Routing Table in a Standard Area 3-137 Example: Routing Table in a Stub Area 3-138 Example: Routing Table in a Stub Area with Summarization 3-139 Example: Routing Table in a Totally Stubby Area 3-140 Configuring NSSAs 3-141 Example: NSSA Configuration 3-144 Example: NSSA Totally Stubby Configuration 3-145 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. © 2006 Cisco Systems, Inc. Building Scalable Cisco Internetworks (BSCI) v3.0 v Verifying All Stub Area Types 3-146 Summary 3-147 Configuring OSPF Authentication 3-149 Overview 3-149 Objectives 3-149 Types of Authentication 3-150 Configuring Simple Password Authentication 3-151 Example: Simple Password Authentication Configuration 3-153 Example: R2 Configuration for Simple Password Authentication 3-154 Verifying Simple Password Authentication 3-155 Configuring MD5 Authentication 3-156 Example: MD5 Authentication Configuration 3-159 Example: R2 Configuration for MD5 Authentication 3-160 Verifying MD5 Authentication 3-161 Troubleshooting Simple Password Authentication 3-162 Example: Successful Simple Password Authentication 3-162 Example: Troubleshooting Simple Password Authentication Problems 3-164 Troubleshooting MD5 Authentication 3-165 Example: Successful MD5 Authentication 3-165 Example: Troubleshooting MD5 Authentication Problems 3-167 Summary 3-168 Module Summary 3-169 Module Self-Check 3-171 Module Self-Check Answer Key 3-188 The IS-IS Protocol 4-1 Overview 4-1 Module Objectives 4-1 Introducing IS-IS and Integrated IS-IS Routing 4-3 Overview 4-3 Objectives 4-3 IS-IS Routing 4-4 Integrated IS-IS Routing 4-8 Principles and Issues of Integrated IS-IS Design 4-9 The ES-IS Protocol 4-11 OSI Routing Levels 4-13 Level 0 Routing 4-13 IS-IS Level 1 Routing 4-13 IS-IS Level 2 Routing 4-14 Level 3 Routing 4-14 Summary of Routing Levels 4-14 Comparing IS-IS to OSPF 4-15 Summary of Differences between OSPF and Integrated IS-IS 4-19 Summary 4-20 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. vi Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. Performing IS-IS Routing Operations 4-21 Overview 4-21 Objectives 4-21 NSAP Addresses 4-22 NET Addresses 4-28 IS-IS Routing Levels 4-30 Intra-Area and Interarea Addressing and Routing 4-31 Example: Identifying Systems—OSI Addressing in Networks 4-33 Example: OSI Area Routing 4-34 IS-IS PDUs 4-37 Link-State Packets 4-39 Example: LSP TLV Examples 4-41 Implementing IS-IS in NBMA Networks 4-42 Implementing IS-IS in Broadcast Networks 4-44 LSP and IIH Levels 4-47 Level 1 and Level 2 LSP 4-47 Level 1 and Level 2 IIH 4-47 Example: Comparing Broadcast and Point-to-Point Topologies 4-49 LSDB Synchronization 4-50 Example: LSDB Synchronization—LAN 4-52 Example: LSDB Synchronization: Point-to-Point 4-53 Example: WAN Adjacencies 4-55 Summary 4-56 Configuring Basic Integrated IS-IS 4-57 Overview 4-57 Objectives 4-57 Integrated IS-IS in a CLNS Environment 4-58 Configuring Integrated IS-IS 4-61 Example: Simple Integrated IS-IS Configuration 4-66 Optimizing IS-IS 4-67 Example: Tuning IS-IS Configuration 4-70 Configuring Route Summarization in IS-IS 4-71 Verifying IS-IS Configuration 4-72 Example: Is Integrated IS-IS Running? 4-72 Verifying CLNS IS-IS Structures 4-74 Example: OSI Intra-Area and Interarea Routing 4-76 Summary 4-80 Module Summary 4-81 References 4-81 Module Self-Check 4-83 Module Self-Check Answer Key 4-92 Example: WAN Adjacencies 4-94 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study. [...]... this course Cisco Career Certifications Expand Your Professional Options and Advance Your Career CCNP Expert CCIE Recommended Training Through Cisco Learning Partners 64 2-9 01 BSCI Professional CCNP Associate CCNA Required Exam Building Scalable Cisco Internetworks 64 2-8 12 BCMSN Building Cisco Multilayer Switched Networks 64 2-8 21 ISCW Implementing Secure Converged Wide-Area Networks 64 2-8 45 ONT Optimizing... Protocol Comparison EIGRP OSPF IS-IS Large Large Very Large Very High High High Use of VLSM (Yes-No) Yes Yes Yes Mixed-Vendor Devices (Yes-No) No Yes Yes Good Good Fair Parameters Size of Network (Small-Medium-Large-Very Large) Speed of Convergence (Very High-High-Medium-Low) Network Support Staff Knowledge (Good-Poor) © 2006 Cisco Systems, Inc All rights reserved BSCI v3.0— 1- 1 3 The figure represents a simple... printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study Describing Network Requirements 1- 1 7 1- 1 8 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed... threats 1- 1 0 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study © 2006 Cisco Systems, Inc Cisco. .. for purposes other than individual self-study BSCI v3.0— 1- 2 Course Goal and Objectives This topic describes the course goal and objectives Course Goal “To train network administrators on the techniques to plan, implement, and monitor a scalable IP routing network.” Building Scalable Cisco Internetworks © 2006 Cisco Systems, Inc All rights reserved BSCI v3.0— 1- 3 Upon completing this course, you will... or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study Describing Network Requirements 1- 1 1 Cisco SONA Framework Layers © 2006 Cisco Systems, Inc All rights reserved BSCI v3.0— 1- 1 0 The Cisco SONA framework shows how integrated systems can both allow a dynamic, flexible architecture and provide for operational efficiency... services layer 1- 1 2 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study © 2006 Cisco Systems,... individual self-study  1- 2 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study © 2006 Cisco Systems,... version 6 (IPv6) 1- 1 6 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study © 2006 Cisco Systems,... costs 1- 4 Building Scalable Cisco Internetworks (BSCI) v3.0 The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study © 2006 Cisco Systems, Inc The Cisco . 3 -1 10 Summary 3 -1 11 OSPF Route Summarization 3 -1 13 Overview 3 -1 13 Objectives 3 -1 13 OSPF Route Summarization 3 -1 14 Example: Using Route Summarization 3 -1 16. IIN 1- 1 1 Routing and Routing Protocols 1- 1 5 Summary 1- 1 7 References 1- 1 7 Configuring EIGRP 2 -1 Overview 2 -1 Module Objectives 2 -1 Introducing EIGRP 2-3