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Building Scalable Cisco Internetworks - Volume 1

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Building Scalable Cisco Internetworks - Volume 1

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Building Scalable Cisco Internetworks is recommended training for individuals seeking Cisco CCNP certification.

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  1. 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.
  2. Corporate Headquarters European Headquarters Americas Headquarters Asia Pacific Headquarters Cisco Systems, Inc. Cisco Systems International BV Cisco Systems, Inc. Cisco Systems, Inc. 170 West Tasman Drive Haarlerbergpark 170 West Tasman Drive 168 Robinson Road San Jose, CA 95134-1706 Haarlerbergweg 13-19 San Jose, CA 95134-1706 #28-01 Capital Tower USA 1101 CH Amsterdam USA Singapore 068912 www.cisco.com The Netherlands www.cisco.com www.cisco.com Tel: 408 526-4000 www-europe.cisco.com Tel: 408 526-7660 Tel: +65 6317 7777 800 553-NETS (6387) Tel: 31 0 20 357 1000 Fax: 408 527-0883 Fax: +65 6317 7799 Fax: 408 526-4100 Fax: 31 0 20 357 1100 Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the Cisco.comWebsiteatwww.cisco.com/go/offices. Argentina • Australia • Austria • Belgium • Brazil • Bulgaria • Canada • Chile • China PRC • Colombia • Costa Rica • Croatia • Cyprus • Czech Republic • Denmark • Dubai, UAE • Finland • France • Germany • Greece • Hong Kong SAR • Hungary • India • Indonesia • Ireland Israel • Italy • Japan • Korea • Luxembourg • Malaysia • Mexico • The Netherlands • New Zealand • Norway • Peru • Philippines Poland • Portugal • Puerto Rico • Romania • Russia • Saudi Arabia • Scotland • Singapore • Slovakia • Slovenia • South Africa Spain • Sweden • Switzerland • Taiwan • Thailand • Turkey • Ukraine • United Kingdom • United States • Venezuela • Vietnam • Zimbabwe © 2006 Cisco Systems, Inc. All rights reserved. CCSP, CCVP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, The Fastest Way to Increase Your Internet Quotient, and TransPath are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries. All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0601R) DISCLAIMER WARRANTY: THIS CONTENT IS BEING PROVIDED “AS IS.” CISCO MAKES AND YOU RECEIVE NO WARRANTIES IN CONNECTION WITH THE CONTENT PROVIDED HEREUNDER, EXPRESS, IMPLIED, STATUTORY OR IN ANY OTHER PROVISION OF THIS CONTENT OR COMMUNICATION BETWEEN CISCO AND YOU. CISCO SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. This learning product may contain early release content, and while Cisco believes it to be accurate, it falls subject to the disclaimer above. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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 ii Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  7. 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 © 2006 Cisco Systems, Inc. Building Scalable Cisco Internetworks (BSCI) v3.0 iii 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.
  8. 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 iv Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  9. 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 © 2006 Cisco Systems, Inc. Building Scalable Cisco Internetworks (BSCI) v3.0 v 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.
  10. 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 vi Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  11. BSCI Course Introduction Overview Building Scalable Cisco Internetworks (BSCI) v3.0 is recommended training for individuals seeking Cisco CCNP® certification. The course instructs network administrators of medium-to- large network sites on the use of advanced routing in implementing scalability for Cisco routers that are connected to LANs and WANs. The goal is to train network administrators to dramatically increase the number of routers and sites using these techniques instead of redesigning the network when additional sites or wiring configurations are added. Learner Skills and Knowledge This topic lists the skills and knowledge that learners must possess to benefit fully from the course. Learner Skills and Knowledge Cisco CCNA® certification Note: Practical experience with deploying and operating networks based on Cisco network devices and Cisco IOS software is strongly recommended. © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-2 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.
  12. 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 be able to meet these objectives: „ Describe the converged network requirements of various network and networked applications within the Cisco network architectures „ Implement and verify EIGRP operations „ Build a scalable multiarea network with OSPF „ Configure Integrated IS-IS in a single area „ Manipulate routing and packet flow „ Implement and verify BGP for enterprise ISP connectivity „ Implement and verify multicast forwarding using PIM and related protocols „ Describe how IPv6 functions to satisfy the increasingly complex requirements of hierarchical addressing 2 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  13. Course Flow This topic presents the suggested flow of the course materials. Course Flow Day 1 Day 2 Day 3 Day 4 Day 5 Course Introduction A Network Configuring The IS-IS Implementing Implementing M Requirements OSPF Protocol BGP Multicast Configuring EIGRP Lunch Manipulating P Configuring Configuring Routing Implementing Implementing M EIGRP OSPF Updates BGP IPv6 © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-4 The schedule reflects the recommended structure for this course. This structure allows enough time for the instructor to present the course information and for you to work through the lab activities. The exact timing of the subject materials and labs depends on the pace of your specific class. © 2006 Cisco Systems, Inc. Course Introduction 3 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.
  14. Additional References This topic presents the Cisco icons and symbols used in this course, as well as information on where to find additional technical references. Cisco Icons and Symbols Router Web Server PC Serial Link Network Cloud Laptop Circuit-Switched Link File Ethernet Server End Users © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-5 Cisco Glossary of Terms For additional information on Cisco terminology, refer to the Cisco Internetworking Terms and Acronyms glossary of terms at http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/index.htm. 4 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  15. Your Training Curriculum This topic presents the training curriculum for this course. Cisco Career Certifications Expand Your Professional Options and Advance Your Career CCNP Required Recommended Training Through Expert Exam Cisco Learning Partners CCIE 642-901 Building Scalable Cisco BSCI Internetworks Professional 642-812 Building Cisco Multilayer BCMSN Switched Networks CCNP 642-821 Implementing Secure ISCW Converged Wide-Area Networks Associate 642-845 Optimizing Converged ONT Cisco Networks CCNA http://www.cisco.com/go/certifications © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-6 You are encouraged to join the Cisco Certification Community, a discussion forum open to anyone holding a valid Cisco Career Certification (such as Cisco CCIE®, CCNA®, CCDA®, CCNP®, CCDP®, CCIP®, CCSP™, or CCVP™). It provides a gathering place for Cisco certified professionals to share questions, suggestions, and information about Cisco Career Certification programs and other certification-related topics. For more information, visit http://www.cisco.com/go/certifications. © 2006 Cisco Systems, Inc. Course Introduction 5 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.
  16. Learner Introductions • Your name • Your company • Skills and knowledge • Brief history • Objective © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-7 Please introduce yourself to the class. 6 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  17. Module 1 Network Requirements Overview The convergence of voice, video, and data has not only changed the conceptual network models but has also affected the way that networks support services and applications. This module describes Cisco conceptual models and architectures for converged networks. Module Objectives Upon completing this module, you will be able to describe the converged network requirements of various network and networked applications within the Cisco network architectures. 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.
  18. 1-2 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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.
  19. Lesson 1 Describing Network Requirements Overview This lesson starts by introducing Cisco Enterprise Architectures and describing how they align with the traditional three-layer hierarchical network model. The Cisco Enterprise Composite Network Model is examined, and the traffic patterns in converged networks are discussed. The Cisco vision of the future Intelligent Information Network (IIN) and the Service-Oriented Network Architecture (SONA) are introduced. The lesson concludes with a discussion of where routing protocols fit into these models. Objectives Upon completing this lesson, you will be able to describe the converged network requirements of various network and networked applications within the Cisco network architectures. This ability includes being able to meet these objectives: „ Explain the Cisco conceptual network models, such as Cisco Enterprise Architectures and the Cisco hierarchical network model „ Describe the Cisco Enterprise Composite Network Model „ Describe the traffic conditions in a converged network „ Describe the IIN and the Cisco SONA framework „ Describe routing and routing protocols 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.
  20. Cisco Network Models This topic describes Cisco network models, starting with the Cisco Enterprise Architectures and their mapping to traditional three-layer hierarchical network model. Cisco Enterprise Architectures © 2006 Cisco Systems, Inc. All rights reserved. BSCI v3.0—1-2 Cisco provides an enterprise-wide systems architecture that helps companies to protect, optimize, and grow the infrastructure that supports their business processes. The architecture provides for integration of the entire network—campus, data center, WAN, branches, and teleworkers—offering staff secure access to tools, processes, and services. The Cisco Enterprise Campus Architecture combines a core infrastructure of intelligent switching and routing with tightly integrated productivity-enhancing technologies, including IP communications, mobility, and advanced security. The architecture provides the enterprise with high availability through a resilient multilayer design, redundant hardware and software features, and automatic procedures for reconfiguring network paths when failures occur. Multicast provides optimized bandwidth consumption, and quality of service (QoS) prevents oversubscription to ensure that real-time traffic, such as voice and video, or critical data is not dropped or delayed. Integrated security protects against and mitigates the impact of worms, viruses, and other attacks on the network—even at the port level. Cisco enterprise-wide architecture extends support for standards, such as 802.1x and Extensible Authentication Protocol (EAP). It also provides the flexibility to add IPsec and Multiprotocol Label Switching (MPLS) virtual private networks (VPNs), identity and access management, and VLANs to compartmentalize access. These features help improve performance and security and decrease costs. 1-4 Building Scalable Cisco Internetworks (BSCI) v3.0 © 2006 Cisco Systems, Inc. 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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