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CCDE Study Guide Vital Source e-bog
Marwan Al-shawi
(2015)
Pearson International
244,00 kr.
Leveres umiddelbart efter køb
CCDE Study Guide Vital Source e-bog
Marwan Al-shawi
(2015)
Pearson International
297,00 kr.
Leveres umiddelbart efter køb
CCDE Study Guide Vital Source e-bog
Marwan Al-shawi
(2015)
Pearson International
349,00 kr.
Leveres umiddelbart efter køb
CCDE Study Guide
Marwan Al-shawi
(2015)
Sprog: Engelsk
Pearson Education, Limited
852,00 kr.
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Detaljer om varen
- 1. Udgave
- Vital Source 90 day rentals (dynamic pages)
- Udgiver: Pearson International (Oktober 2015)
- ISBN: 9780134135892R90
The authoritative, business-driven study resource for the tough CCDE Practical Exam CCDE Study Guide is written and reviewed by CCDE engineers and helps you to both improve your design skills and to study for and pass the CCDE exam. Network design is an art, combining broad technology knowledge and experience. This book covers a broad number of technologies, protocols and design options, and considerations that can bring these aspects together and show how they can be used and thought about based on different requirements and business goals. Therefore, this book does not attempt to teach foundational technology knowledge, instead each section: Highlights, discusses, and compares the limitations and advantages of the different design options in terms of scalability, performance, flexibility, availability, complexity, security, and so on to simplify the job and help you understand what technology, protocol, or design options should be selected and why, based on the business or application requirements or to fix a broken design that need to be optimized Covers design aspects of different protocols and technologies, and how they map with different requirements Highlights drivers toward using these technologies whether it is intended for enterprise or service provider network, depending on the topic and technology Using a business-driven approach, CCDE Study Guide helps you analyze business and technical requirements and develop network designs that are based on these business needs and goals, taking into account both the technical and non-technical design constraints. The various “scenario-based” design examples discussed in this book will help you craft design approaches and requirements analysis on such topics as converged enterprise network architectures, service provider network architectures, and data centers. The book also addresses high availability, IPv6, multicast, QoS, security, and network management design considerations, presenting you with an in-depth evaluation of a broad range of technologies and environments. Whether you are preparing for the CCDE exam or simply wish to gain better insight into the art of network design in a variety of environments, this book helps you learn how to think like an expert network designer as well as analyze and compare the different design options, principles, and protocols based on different design requirements. Master a business-driven approach to designing enterprise, service provider, and data center networks Analyze the design impact of business, functional, and application requirements Learn from scenario-based examples, including converged enterprise networks, service provider networks, and cloud-based data centers Overcome design limitations and fix broken designs Review design options and considerations related to Layer 2 and Layer 3 control plane protocols Build designs that accommodate new services and applications Consider design options for modern campus networks, including network virtualization Design WAN edge and Internet edge blocks in enterprise networks Review the architectural elements of a service provider-grade network Plan MPLS VPN network environments, including L2VPN and L3VPN Interconnect different networks or routing domains Design traditional, virtualized, and cloud-based data center networks Interconnect dispersed data center networks to protect business continuity Achieve appropriate levels of operational uptime and network resiliency Integrate IPv6, multicast, QoS, security, and network management into your designs
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Detaljer om varen
- 1. Udgave
- Vital Source 180 day rentals (dynamic pages)
- Udgiver: Pearson International (Oktober 2015)
- ISBN: 9780134135892R180
The authoritative, business-driven study resource for the tough CCDE Practical Exam CCDE Study Guide is written and reviewed by CCDE engineers and helps you to both improve your design skills and to study for and pass the CCDE exam. Network design is an art, combining broad technology knowledge and experience. This book covers a broad number of technologies, protocols and design options, and considerations that can bring these aspects together and show how they can be used and thought about based on different requirements and business goals. Therefore, this book does not attempt to teach foundational technology knowledge, instead each section: Highlights, discusses, and compares the limitations and advantages of the different design options in terms of scalability, performance, flexibility, availability, complexity, security, and so on to simplify the job and help you understand what technology, protocol, or design options should be selected and why, based on the business or application requirements or to fix a broken design that need to be optimized Covers design aspects of different protocols and technologies, and how they map with different requirements Highlights drivers toward using these technologies whether it is intended for enterprise or service provider network, depending on the topic and technology Using a business-driven approach, CCDE Study Guide helps you analyze business and technical requirements and develop network designs that are based on these business needs and goals, taking into account both the technical and non-technical design constraints. The various “scenario-based” design examples discussed in this book will help you craft design approaches and requirements analysis on such topics as converged enterprise network architectures, service provider network architectures, and data centers. The book also addresses high availability, IPv6, multicast, QoS, security, and network management design considerations, presenting you with an in-depth evaluation of a broad range of technologies and environments. Whether you are preparing for the CCDE exam or simply wish to gain better insight into the art of network design in a variety of environments, this book helps you learn how to think like an expert network designer as well as analyze and compare the different design options, principles, and protocols based on different design requirements. Master a business-driven approach to designing enterprise, service provider, and data center networks Analyze the design impact of business, functional, and application requirements Learn from scenario-based examples, including converged enterprise networks, service provider networks, and cloud-based data centers Overcome design limitations and fix broken designs Review design options and considerations related to Layer 2 and Layer 3 control plane protocols Build designs that accommodate new services and applications Consider design options for modern campus networks, including network virtualization Design WAN edge and Internet edge blocks in enterprise networks Review the architectural elements of a service provider-grade network Plan MPLS VPN network environments, including L2VPN and L3VPN Interconnect different networks or routing domains Design traditional, virtualized, and cloud-based data center networks Interconnect dispersed data center networks to protect business continuity Achieve appropriate levels of operational uptime and network resiliency Integrate IPv6, multicast, QoS, security, and network management into your designs
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Bookshelf online: 180 dage fra købsdato.
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Detaljer om varen
- 1. Udgave
- Vital Source 365 day rentals (dynamic pages)
- Udgiver: Pearson International (Oktober 2015)
- ISBN: 9780134135892R365
The authoritative, business-driven study resource for the tough CCDE Practical Exam CCDE Study Guide is written and reviewed by CCDE engineers and helps you to both improve your design skills and to study for and pass the CCDE exam. Network design is an art, combining broad technology knowledge and experience. This book covers a broad number of technologies, protocols and design options, and considerations that can bring these aspects together and show how they can be used and thought about based on different requirements and business goals. Therefore, this book does not attempt to teach foundational technology knowledge, instead each section: Highlights, discusses, and compares the limitations and advantages of the different design options in terms of scalability, performance, flexibility, availability, complexity, security, and so on to simplify the job and help you understand what technology, protocol, or design options should be selected and why, based on the business or application requirements or to fix a broken design that need to be optimized Covers design aspects of different protocols and technologies, and how they map with different requirements Highlights drivers toward using these technologies whether it is intended for enterprise or service provider network, depending on the topic and technology Using a business-driven approach, CCDE Study Guide helps you analyze business and technical requirements and develop network designs that are based on these business needs and goals, taking into account both the technical and non-technical design constraints. The various “scenario-based” design examples discussed in this book will help you craft design approaches and requirements analysis on such topics as converged enterprise network architectures, service provider network architectures, and data centers. The book also addresses high availability, IPv6, multicast, QoS, security, and network management design considerations, presenting you with an in-depth evaluation of a broad range of technologies and environments. Whether you are preparing for the CCDE exam or simply wish to gain better insight into the art of network design in a variety of environments, this book helps you learn how to think like an expert network designer as well as analyze and compare the different design options, principles, and protocols based on different design requirements. Master a business-driven approach to designing enterprise, service provider, and data center networks Analyze the design impact of business, functional, and application requirements Learn from scenario-based examples, including converged enterprise networks, service provider networks, and cloud-based data centers Overcome design limitations and fix broken designs Review design options and considerations related to Layer 2 and Layer 3 control plane protocols Build designs that accommodate new services and applications Consider design options for modern campus networks, including network virtualization Design WAN edge and Internet edge blocks in enterprise networks Review the architectural elements of a service provider-grade network Plan MPLS VPN network environments, including L2VPN and L3VPN Interconnect different networks or routing domains Design traditional, virtualized, and cloud-based data center networks Interconnect dispersed data center networks to protect business continuity Achieve appropriate levels of operational uptime and network resiliency Integrate IPv6, multicast, QoS, security, and network management into your designs
Licens varighed:
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Udgiveren oplyser at følgende begrænsninger er gældende for dette produkt:
Print: 2 sider kan printes ad gangen
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Detaljer om varen
- Paperback: 616 sider
- Udgiver: Pearson Education, Limited (Oktober 2015)
- ISBN: 9781587144615
The authoritative, business-driven study resource for the tough CCDE Practical Exam CCDE Study Guide is written and reviewed by CCDE engineers and helps you to both improve your design skills and to study for and pass the CCDE exam. Network design is an art, combining broad technology knowledge and experience. This book covers a broad number of technologies, protocols and design options, and considerations that can bring these aspects together and show how they can be used and thought about based on different requirements and business goals. Therefore, this book does not attempt to teach foundational technology knowledge, instead each section:
the different design options, principles, and protocols based on different design requirements.
- Highlights, discusses, and compares the limitations and advantages of the different design options in terms of scalability, performance, flexibility, availability, complexity, security, and so on to simplify the job and help you understand what technology, protocol, or design options should be selected and why, based on the business or application requirements or to fix a broken design that need to be optimized
- Covers design aspects of different protocols and technologies, and how they map with different requirements
- Highlights drivers toward using these technologies whether it is intended for enterprise or service provider network, depending on the topic and technology
the different design options, principles, and protocols based on different design requirements.
- Master a business-driven approach to designing enterprise, service provider, and data center networks
- Analyze the design impact of business, functional, and application requirements
- Learn from scenario-based examples, including converged enterprise networks, service provider networks, and cloud-based data centers
- Overcome design limitations and fix broken designs
- Review design options and considerations related to Layer 2 and Layer 3 control plane protocols
- Build designs that accommodate new services and applications
- Consider design options for modern campus networks, including network virtualization
- Design WAN edge and Internet edge blocks in enterprise networks
- Review the architectural elements of a service provider-grade network
- Plan MPLS VPN network environments, including L2VPN and L3VPN
- Interconnect different networks or routing domains
- Design traditional, virtualized, and cloud-based data center networks
- Interconnect dispersed data center networks to protect business continuity
- Achieve appropriate levels of operational uptime and network resiliency
- Integrate IPv6, multicast, QoS, security, and network management into your designs
Introduction xx
Part I Business-Driven Strategic Network Design 1
Chapter 1 Network Design Requirements: Analysis and Design Principles 3 Design Scope 4 Business Requirements 5 Business Continuity 6 Elasticity to Support the Strategic Business Trends 7 IT as a "Business Innovation" Enabler 8 The Nature of the Business 9 Business Priorities 9 Functional Requirements 9 Technical Requirements 10 Application Requirements 10 Design Constraints 12 Crafting the Design Requirements 13 Planning 16 Decision Tree 17 Decision Matrix 17 Planning Approaches 18 Strategic Balance 18 Network Design Principles 19 Reliability and Resiliency 19 Modularity 20 Reliable and Manageable Scalability 21 Fault Isolation and Simplicity 22 Hierarchy 23 Responsiveness 25 Holistic Design Approach 25 Physical Layout Considerations 26 No Gold Plating 29 Summary 29
Part II Next Generation - Converged Enterprise Network Architectures 31
Chapter 2 Enterprise Layer 2 and Layer 3 Design 35 Enterprise Layer 2 LAN Design Considerations 35 Spanning Tree Protocol 36 VLANs and Trunking 37 Link Aggregation 37 First Hop Redundancy Protocol and Spanning Tree 38 Enterprise Layer 2 LAN Common Design Options 40 Layer 2 Design Models: STP Based (Classical Model) 40 Layer 2 Design Model: Switch Clustering Based (Virtual Switch) 41 Layer 2 Design Model: Daisy-Chained Access Switches 42 Layer 2 LAN Design Recommendations 43 Enterprise Layer 3 Routing Design Considerations 43 IP Routing and Forwarding Concept Review 43 Link-State Routing Protocol Design Considerations 45 Link-State over Hub-and-Spoke Topology 45 Link-State over Full-Mesh Topology 48 OSPF Area Types 49 OSPF Versus IS-IS 53 Further Reading 53 EIGRP Design Considerations 54 EIGRP: Hub and Spoke 55 EIGRP Stub Route Leaking: Hub-and-Spoke Topology 56 EIGRP: Ring Topology 58 EIGRP: Full-Mesh Topology 58 EIGRP Route Propagation Considerations 59 Further Reading 60 Hiding Topology and Reachability Information Design Considerations 60 IGP Flooding Domains Design Considerations 62 Link-State Flooding Domain Structure 63 EIGRP Flooding Domains Structure 69 Routing Domain Logical Separation 70 Route Summarization 76 Summary Black Holes 78 Suboptimal Routing 80 IGP Traffic Engineering and Path Selection: Summary 83 OSPF 83 IS-IS 84 EIGRP 84 Summary of IGP Characteristics 84 BGP Design Considerations 85 Interdomain Routing 86 BGP Attributes and Path Selection 88 BGP as the Enterprise Core Routing Protocol 89 Enterprise Core Routing Design Models with BGP 90 BGP Shortest Path over the Enterprise Core 94 BGP Scalability Design Options and Considerations 96 BGP Route Reflection 96 Update Grouping 102 BGP Confederation 103 Confederation Versus Route Reflection 105 Further Reading 106 Route Redistribution Design Considerations 107 Single Redistribution Boundary Point 107 Multiple Redistribution Boundary Points 108 Metric Transformation 109 Administrative Distance 110 Route Filtering Versus Route Tagging with Filtering 110 Enterprise Routing Design Recommendations 114 Determining Which Routing Protocol to Use 115 Summary 117
Chapter 3 Enterprise Campus Architecture Design 119 Enterprise Campus: Hierarchical Design Models 119 Three-Tier Model 120 Two-Tier Model 120 Enterprise Campus: Modularity 121 When Is the Core Block Required? 122 Access-Distribution Design Model 123 Enterprise Campus: Layer 3 Routing Design Considerations 126 EIGRP Versus Link State as a Campus IGP 128 Enterprise Campus Network Virtualization 129 Drivers to Consider Network Virtualization 129 Network Virtualization Design Elements 131 Enterprise Network Virtualization Deployment Models 132 Device Virtualization 133 Path Isolation 133 Service Virtualization 136 Summary 141 Further Reading 141
Chapter 4 Enterprise Edge Architecture Design 143 Enterprise WAN Module 143 WAN Transports: Overview 144 Modern WAN Transports (Layer 2 Versus Layer 3) 145 Layer 2 MPLS-Based WAN 146 Layer 3 MPLS-Based WAN 148 Internet as WAN Transport 151 Internet as WAN Transport Advantages and Limitations 152 WAN Transport Models Comparison 153 WAN Module Design Options and Considerations 155 Design Hierarchy of the Enterprise WAN Module 155 WAN Module Access to Aggregation Layer Design Options 156 WAN Edge Connectivity Design Options 158 Single WAN Provider Versus Dual Providers 160 Remote Site (Branch) WAN Design Considerations 161 Internet as WAN Transport (DMVPN Based) 164 Enterprise WAN Module Design Options 166 Option
1: Small to Medium 166 Option
2: Medium to Large 167 Option
3: Large to Very Large 169 WAN Virtualization and Overlays Design Considerations and Techniques 170 WAN Virtualization 172 Over-the-Top WAN Virtualization Design Options (Service Provider Coordinated/Dependent) 174 Over-the-Top WAN Virtualization Design Options (Service Provider Independent) 176 Comparison of Enterprise WAN Transport Virtualization Techniques 181 WAN Virtualization Design Options Decision Tree 183 Enterprise WAN Migration to MPLS VPN Considerations 184 Migrating from Legacy WAN to MPLS L3VPN WAN Scenario 184 Enterprise Internet Edge Design Considerations 188 Internet Edge Architecture Overview 188 Enterprise Multihomed Internet Design Considerations 190 Multihoming Design Concept and Drivers 190 BGP over Multihomed Internet Edge Planning Recommendations 192 BGP Policy Control Attributes for Multihoming 192 Common Internet Multihoming Traffic Engineering Techniques over BGP 194 Scenario
1: Active-Standby 194 Asymmetrical Routing with Multihoming (Issue and Solution) 199 Summary 202
Part III Service Provider Networks Design and Architectures 203
Chapter 5 Service Provider Network Architecture Design 205 Service Provider Network Architecture Building Blocks 207 Point of Presence 208 Service Provider Network Core 211 Service Provider Control Plane Logical Architectures 212 IGP in Service Provider Networks 212 BGP in Service Provider Networks 213 BGP Route Aggregation (ISP Perspective) 213 Hot- and Cold-Potato Routing (SP Perspective) 217 Multiprotocol Label Switching 223 MPLS Label-Switched Path 225 MPLS Deployment Modes 225 Multiprotocol BGP 226 MPLS Traffic Engineering 227 Business and Technical Drivers 227 MPLS-TE Planning 231 MPLS-TE Strategic Planning Approach 231 MPLS-TE Tactical Planning Approach 232 MPLS-TE Design Considerations 233 Constrained Path Calculation 234 MPS-TE Tunnel Placement 237 Routing Domains 239 Forwarding Traffic Via the TE Tunnel 241 Summary 243 Further Reading 244
Chapter 6 Service Provider MPLS VPN Services Design 245 MPLS VPN (L3VPN) 245 MPLS L3VPN Architecture Components 246 L3VPN Control Plane Components 248 L3VPN Forwarding Plane 251 L3VPN Design Considerations 253 Load Sharing for Multihomed L3VPN CE 253 MPLS L3VPN Topologies 254 MP-BGP VPN Internet Routing 262 PE-CE L3VPN Routing Design 264 PE-CE Routing Design Considerations 265 PE-CE Routing Protocol Selection 266 PE-CE Design Options and Recommendations 266 Layer 2 MPLS VPN (L2VPN) 282 IP NGN Carrier Ethernet 284 Virtual Private Wire Service Design Considerations 287 Transport Models 287 VPWS Control Plane 289 Virtual Private LAN Service Design Considerations 291 VPLS Architecture Building Blocks 292 VPLS Functional Components 292 Virtual Switching Instance 293 VPLS Control Plane 293 VPLS Design Models 294 Ethernet Access Model 298 MPLS Access Model 299 H-VPLS with Provider Backbone Bridging 301 EVPN Design Model (Next-Generation MPLS L2VPN) 307 EVPN BGP Routes and Extended Communities 311 Final Thoughts: L2VPN Business Value and Direction 314 Service Provider Control Plane Scalability 315 IGP Scalability Considerations 316 Route Reflection Design Options in SP Networks 318 Provider Routers as RRs for MPLS-VPN 319 Separate RR for MPLS-VPN and IPv4/v6 319 Separate RR per Service (MPLS-VPN and IPv4/v6) 320 Hierarchical RR 321 Partitioned MPLS-VPN RR 323 Hierarchical LSP (Unified MPLS) 325 Summary 327 Further Reading 327
Chapter 7 Multi-AS Service Provider Network Design 329 Inter-AS Design Options and Considerations 330 Inter-AS Option A: Back-to-Back VRF (VRF-to-VRF) 330 Inter-AS Option B: ASBR to ASBR with MP-eBGP Approach 331 Option B-1: Next-Hop-Self Approach 331 Option B-2: Redistribute Connected Approach 332 Option B-3: Multihop MP-eBGP Approach 334 Inter-AS Option C: Multihop MP-eBGP Between RR 335 Inter-AS Option D 335 Inter-AS IPv6 VPN 336 Inter-AS MPLS-TE 337 Inter-AS L2VPN 338 Inter-AS QoS 343 Comparison of Inter-AS
Part I Business-Driven Strategic Network Design 1
Chapter 1 Network Design Requirements: Analysis and Design Principles 3 Design Scope 4 Business Requirements 5 Business Continuity 6 Elasticity to Support the Strategic Business Trends 7 IT as a "Business Innovation" Enabler 8 The Nature of the Business 9 Business Priorities 9 Functional Requirements 9 Technical Requirements 10 Application Requirements 10 Design Constraints 12 Crafting the Design Requirements 13 Planning 16 Decision Tree 17 Decision Matrix 17 Planning Approaches 18 Strategic Balance 18 Network Design Principles 19 Reliability and Resiliency 19 Modularity 20 Reliable and Manageable Scalability 21 Fault Isolation and Simplicity 22 Hierarchy 23 Responsiveness 25 Holistic Design Approach 25 Physical Layout Considerations 26 No Gold Plating 29 Summary 29
Part II Next Generation - Converged Enterprise Network Architectures 31
Chapter 2 Enterprise Layer 2 and Layer 3 Design 35 Enterprise Layer 2 LAN Design Considerations 35 Spanning Tree Protocol 36 VLANs and Trunking 37 Link Aggregation 37 First Hop Redundancy Protocol and Spanning Tree 38 Enterprise Layer 2 LAN Common Design Options 40 Layer 2 Design Models: STP Based (Classical Model) 40 Layer 2 Design Model: Switch Clustering Based (Virtual Switch) 41 Layer 2 Design Model: Daisy-Chained Access Switches 42 Layer 2 LAN Design Recommendations 43 Enterprise Layer 3 Routing Design Considerations 43 IP Routing and Forwarding Concept Review 43 Link-State Routing Protocol Design Considerations 45 Link-State over Hub-and-Spoke Topology 45 Link-State over Full-Mesh Topology 48 OSPF Area Types 49 OSPF Versus IS-IS 53 Further Reading 53 EIGRP Design Considerations 54 EIGRP: Hub and Spoke 55 EIGRP Stub Route Leaking: Hub-and-Spoke Topology 56 EIGRP: Ring Topology 58 EIGRP: Full-Mesh Topology 58 EIGRP Route Propagation Considerations 59 Further Reading 60 Hiding Topology and Reachability Information Design Considerations 60 IGP Flooding Domains Design Considerations 62 Link-State Flooding Domain Structure 63 EIGRP Flooding Domains Structure 69 Routing Domain Logical Separation 70 Route Summarization 76 Summary Black Holes 78 Suboptimal Routing 80 IGP Traffic Engineering and Path Selection: Summary 83 OSPF 83 IS-IS 84 EIGRP 84 Summary of IGP Characteristics 84 BGP Design Considerations 85 Interdomain Routing 86 BGP Attributes and Path Selection 88 BGP as the Enterprise Core Routing Protocol 89 Enterprise Core Routing Design Models with BGP 90 BGP Shortest Path over the Enterprise Core 94 BGP Scalability Design Options and Considerations 96 BGP Route Reflection 96 Update Grouping 102 BGP Confederation 103 Confederation Versus Route Reflection 105 Further Reading 106 Route Redistribution Design Considerations 107 Single Redistribution Boundary Point 107 Multiple Redistribution Boundary Points 108 Metric Transformation 109 Administrative Distance 110 Route Filtering Versus Route Tagging with Filtering 110 Enterprise Routing Design Recommendations 114 Determining Which Routing Protocol to Use 115 Summary 117
Chapter 3 Enterprise Campus Architecture Design 119 Enterprise Campus: Hierarchical Design Models 119 Three-Tier Model 120 Two-Tier Model 120 Enterprise Campus: Modularity 121 When Is the Core Block Required? 122 Access-Distribution Design Model 123 Enterprise Campus: Layer 3 Routing Design Considerations 126 EIGRP Versus Link State as a Campus IGP 128 Enterprise Campus Network Virtualization 129 Drivers to Consider Network Virtualization 129 Network Virtualization Design Elements 131 Enterprise Network Virtualization Deployment Models 132 Device Virtualization 133 Path Isolation 133 Service Virtualization 136 Summary 141 Further Reading 141
Chapter 4 Enterprise Edge Architecture Design 143 Enterprise WAN Module 143 WAN Transports: Overview 144 Modern WAN Transports (Layer 2 Versus Layer 3) 145 Layer 2 MPLS-Based WAN 146 Layer 3 MPLS-Based WAN 148 Internet as WAN Transport 151 Internet as WAN Transport Advantages and Limitations 152 WAN Transport Models Comparison 153 WAN Module Design Options and Considerations 155 Design Hierarchy of the Enterprise WAN Module 155 WAN Module Access to Aggregation Layer Design Options 156 WAN Edge Connectivity Design Options 158 Single WAN Provider Versus Dual Providers 160 Remote Site (Branch) WAN Design Considerations 161 Internet as WAN Transport (DMVPN Based) 164 Enterprise WAN Module Design Options 166 Option
1: Small to Medium 166 Option
2: Medium to Large 167 Option
3: Large to Very Large 169 WAN Virtualization and Overlays Design Considerations and Techniques 170 WAN Virtualization 172 Over-the-Top WAN Virtualization Design Options (Service Provider Coordinated/Dependent) 174 Over-the-Top WAN Virtualization Design Options (Service Provider Independent) 176 Comparison of Enterprise WAN Transport Virtualization Techniques 181 WAN Virtualization Design Options Decision Tree 183 Enterprise WAN Migration to MPLS VPN Considerations 184 Migrating from Legacy WAN to MPLS L3VPN WAN Scenario 184 Enterprise Internet Edge Design Considerations 188 Internet Edge Architecture Overview 188 Enterprise Multihomed Internet Design Considerations 190 Multihoming Design Concept and Drivers 190 BGP over Multihomed Internet Edge Planning Recommendations 192 BGP Policy Control Attributes for Multihoming 192 Common Internet Multihoming Traffic Engineering Techniques over BGP 194 Scenario
1: Active-Standby 194 Asymmetrical Routing with Multihoming (Issue and Solution) 199 Summary 202
Part III Service Provider Networks Design and Architectures 203
Chapter 5 Service Provider Network Architecture Design 205 Service Provider Network Architecture Building Blocks 207 Point of Presence 208 Service Provider Network Core 211 Service Provider Control Plane Logical Architectures 212 IGP in Service Provider Networks 212 BGP in Service Provider Networks 213 BGP Route Aggregation (ISP Perspective) 213 Hot- and Cold-Potato Routing (SP Perspective) 217 Multiprotocol Label Switching 223 MPLS Label-Switched Path 225 MPLS Deployment Modes 225 Multiprotocol BGP 226 MPLS Traffic Engineering 227 Business and Technical Drivers 227 MPLS-TE Planning 231 MPLS-TE Strategic Planning Approach 231 MPLS-TE Tactical Planning Approach 232 MPLS-TE Design Considerations 233 Constrained Path Calculation 234 MPS-TE Tunnel Placement 237 Routing Domains 239 Forwarding Traffic Via the TE Tunnel 241 Summary 243 Further Reading 244
Chapter 6 Service Provider MPLS VPN Services Design 245 MPLS VPN (L3VPN) 245 MPLS L3VPN Architecture Components 246 L3VPN Control Plane Components 248 L3VPN Forwarding Plane 251 L3VPN Design Considerations 253 Load Sharing for Multihomed L3VPN CE 253 MPLS L3VPN Topologies 254 MP-BGP VPN Internet Routing 262 PE-CE L3VPN Routing Design 264 PE-CE Routing Design Considerations 265 PE-CE Routing Protocol Selection 266 PE-CE Design Options and Recommendations 266 Layer 2 MPLS VPN (L2VPN) 282 IP NGN Carrier Ethernet 284 Virtual Private Wire Service Design Considerations 287 Transport Models 287 VPWS Control Plane 289 Virtual Private LAN Service Design Considerations 291 VPLS Architecture Building Blocks 292 VPLS Functional Components 292 Virtual Switching Instance 293 VPLS Control Plane 293 VPLS Design Models 294 Ethernet Access Model 298 MPLS Access Model 299 H-VPLS with Provider Backbone Bridging 301 EVPN Design Model (Next-Generation MPLS L2VPN) 307 EVPN BGP Routes and Extended Communities 311 Final Thoughts: L2VPN Business Value and Direction 314 Service Provider Control Plane Scalability 315 IGP Scalability Considerations 316 Route Reflection Design Options in SP Networks 318 Provider Routers as RRs for MPLS-VPN 319 Separate RR for MPLS-VPN and IPv4/v6 319 Separate RR per Service (MPLS-VPN and IPv4/v6) 320 Hierarchical RR 321 Partitioned MPLS-VPN RR 323 Hierarchical LSP (Unified MPLS) 325 Summary 327 Further Reading 327
Chapter 7 Multi-AS Service Provider Network Design 329 Inter-AS Design Options and Considerations 330 Inter-AS Option A: Back-to-Back VRF (VRF-to-VRF) 330 Inter-AS Option B: ASBR to ASBR with MP-eBGP Approach 331 Option B-1: Next-Hop-Self Approach 331 Option B-2: Redistribute Connected Approach 332 Option B-3: Multihop MP-eBGP Approach 334 Inter-AS Option C: Multihop MP-eBGP Between RR 335 Inter-AS Option D 335 Inter-AS IPv6 VPN 336 Inter-AS MPLS-TE 337 Inter-AS L2VPN 338 Inter-AS QoS 343 Comparison of Inter-AS
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