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Viser: Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide - (ccdp Arch 642-874)
Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide
(ccdp Arch 642-874)
Keith T. Hutton, Mark D. Schofield, Diane Teare, Ed Caswell og John Tiso
(2011)
Sprog: Engelsk
Cisco Press
765,00 kr.
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Detaljer om varen
- Hardback: 736 sider
- Udgiver: Cisco Press (November 2011)
- Forfattere: Keith T. Hutton, Mark D. Schofield, Diane Teare, Ed Caswell og John Tiso
- ISBN: 9781587142888
Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide, Third Edition, is a Cisco(R)-authorized, self-paced learning tool for CCDP(R) foundation learning. This book provides you with the knowledge needed to perform the conceptual, intermediate, and detailed design of a network infrastructure that supports desired network solutions over intelligent network services, in order to achieve effective performance, scalability, and availability. By reading this book, you will gain a thorough understanding of how to apply solid Cisco network solution models and recommended design practices to provide viable, stable enterprise internetworking solutions. The book presents concepts and examples that are necessary to design converged enterprise networks. Advanced network infrastructure technologies, such as virtual private networks (VPNs) and other security solutions are also covered. Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide, Third Edition teaches you the latest development in network design and technologies, including network infrastructure, intelligent network services, and converged network solutions. Specific topics include campus, routing, addressing, WAN services, data center, e-commerce, SAN, security, VPN, and IP multicast design, as well as network management. Chapter-ending review questions illustrate and help solidify the concepts presented in the book. Whether you are preparing for CCDP certification or simply want to gain a better understanding of designing scalable and reliable network architectures, you will benefit from the foundation information presented in this book. Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide, Third Edition, is part of a recommended learning path from Cisco that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining. John Tiso, CCIE No. 5162, CCDP is a Product Manager for Cisco Systems. He holds a B.S. Degree in Computer Science and Mathematics from Adelphi University and a Graduate Citation in Strategic Management from Harvard University. John is a published author, has served as a technical editor for Cisco Press, and has participated as a SME for the CCIE program. Prior to Cisco, he was a senior consultant and architect in the Cisco partner channel. - Learn about the Cisco Enterprise Architecture - Create highly available campus and data center network designs - Develop optimum Layer 3 designs - Examine advanced WAN services design considerations - Evaluate SAN design considerations - Deploy effective e-commerce module designs - Create effective security services and IPsec and SSL VPN designs - Design IP multicast networks - Understand the network management capabilities within Cisco IOS Software This book is in the Foundation Learning Guide Series. These guides are developed together with Cisco(R) as the only authorized, self-paced learning tools that help networking professionals build their understanding of networking concepts and prepare for Cisco certification exams. Category: Cisco Certification Covers: CCDP ARCH 642-874
Foreword xxx Introduction xxxi
Chapter 1 The Cisco Enterprise Architecture 1 Reviewing Cisco Enterprise Architecture 1 The Hierarchical Model 2 Example Hierarchical Network 3 Enterprise Network Design for Cisco Architectures 4 Service and Application Integration 7 Network Services 7 Network Applications 9 Modularity in Cisco Network Architectures for the Enterprise 9 Reviewing the Cisco PPDIOO Approach 12 PPDIOO Network Lifecycle Approach 13 Benefits of the Lifecycle Approach 14 Using the Design Methodology Under PPDIOO 16 Identifying Customer Requirements 16 Characterizing the Existing Network and Sites 17 Designing the Topology and Network Solutions 18 Dividing the Network into Areas 18 Summary 20 References 21 Review Questions 21
Chapter 2 Enterprise Campus Network Design 23 Designing High Availability in the Enterprise Campus 24 Enterprise Campus Infrastructure Review 24 Access Layer 24 Distribution Layer 26 Core Layer 27 Collapsed-Core Model 29 High-Availability Considerations 30 Implement Optimal Redundancy 30 Provide Alternate Paths 32 Avoid Single Points of Failure 33 Cisco NSF with SSO 33 Routing Protocol Requirements for Cisco NSF 34 Cisco IOS Software Modularity Architecture 35 Example: Software Modularity Benefits 37 Designing an Optimum Design for Layer 2 38 Recommended Practices for Spanning-Tree Configuration 38 Cisco STP Toolkit 40 STP Standards and Features 40 Recommended Practices for STP Hardening 41 Recommended Practices for Trunk Configuration and Vlan Trunking Protocol 43 Dynamic Trunking Protocol 45 Recommended Practices for UDLD Configuration 46 Recommended Practices for EtherChannel 47 Port Aggregation Protocol 49 Link Aggregation Control Protocol 49 Supporting Virtual Switching Systems Designs 50 Common Access-Distribution Block Designs 51 Multichassis EtherChannels and VSS 52 VSS Design Considerations 53 Dual Active Detection and Recovery 54 VSS Design Best Practices 55 Developing an Optimum Design for Layer 3 55 Managing Oversubscription and Bandwidth 56 Bandwidth Management with EtherChannel 56 Bandwidth Management with 10 Gigabit Interfaces 57 Link Load Balancing 57 Link Load Balancing with EtherChannel 58 EtherChannel Design Versus Equal-Cost Multipathing 59 Routing Protocol Design 60 Build Redundant Triangles 60 Peer Only on Transit Links 60 Summarize at the Distribution Layer 62 First-Hop Redundancy 64 Preempt Delay Tuning 65 Elimination of FHRP in VSS Designs 66 Overview of Gateway Load Balancing Protocol 67 Optimizing FHRP Convergence 69 Supporting a Layer 2 to Layer 3 Boundary Design 71 Layer 2 to Layer 3 Boundary Design Models 71 Layer 2 Distribution Switch Interconnection 71 Layer 3 Distribution Switch Interconnection (with HSRP) 72 Layer 3 Distribution Switch Interconnection (with GLBP) 72 Layer 3 Distribution Switch with VSS Interconnection 73 Layer 3 Access to Distribution Interconnection 74 EIGRP Access Design Recommendations 75 OSPF Access Design Recommendations 76 Potential Design Issues 77 Daisy Chaining Access Layer Switches 77 Cisco StackWise Technology in the Access Layer 78 Too Much Redundancy 79 Too Little Redundancy 80 Example: Impact of an Uplink Failure 80 Example: Impact on Return-Path Traffic 82 Asymmetric Routing (Unicast Flooding) 82 Unicast Flooding Prevention 83 Supporting Infrastructure Services 84 IP Telephony Considerations 84 IP Telephony Extends the Network Edge 84 PoE Requirements 85 Power Budget and Management 87 Multi-VLAN Access Port 89 Soft Phones and Voice VLANs 90 QoS Considerations 90 Recommended Practices for QoS 91 Transmit Queue Congestion 91 QoS Role in the Campus 92 Campus QoS Design Considerations 92 Cisco Catalyst Integrated Security Features 93 Port Security Prevents MAC-Based Attacks 93 DHCP Snooping Protects Against Rogue and Malicious DHCP Servers 94 Dynamic ARP Inspection Protects Against ARP Poisoning 94 IP Source Guard Protects Against Spoofed IP Addresses 95 Example Catalyst Integrated Security Feature Configuration 95 Summary 95 References 96 Review Questions 97
Chapter 3 Developing an Optimum Design for Layer 3 101 Designing Advanced IP Addressing 101 IP Address Planning as a Foundation 102 Summary Address Blocks 102 Summarization for IPv6 103 Changing IP Addressing Needs 104 Planning Addresses 104 Applications of Summary Address Blocks 105 Implementing Role-Based Addressing 105 Bit Splitting for Route Summarization 106 Example: Bit Splitting for Area 1 107 IPv6 Address Planning 107 Bit Splitting for IPv6 108 Addressing for VPN Clients 109 NAT in the Enterprise 109 NAT with External Partners 110 Design Considerations for IPv6 in Campus Networks 111 IPv6 Campus Design Considerations 111 Dual-Stack Model 112 Hybrid Model 112 Service Block Model 114 Designing Advanced Routing 115 Route Summarization and Default Routing 115 Originating Default Routes 116 Stub Areas and Default Route 117 Route Filtering in the Network Design 118 Inappropriate Transit Traffic 118 Defensive Filtering 120 Designing Redistribution 121 Filtered Redistribution 122 Migrating Between Routing Protocols 123 Designing Scalable EIGRP Designs 123 Scaling EIGRP Designs 124 EIGRP Fast Convergence 124 EIGRP Fast-Convergence Metrics 125 Scaling EIGRP with Multiple Autonomous Systems 126 Example: External Route Redistribution Issue 126 Filtering EIGRP Redistribution with Route Tags 127 Filtering EIGRP Routing Updates with Inbound Route Tags 128 Example: Queries with Multiple EIGRP Autonomous Systems 130 Reasons for Multiple EIGRP Autonomous Systems 130 Designing Scalable OSPF Design 131 Factors Influencing OSPF Scalability 131 Number of Adjacent Neighbors and DRs 132 Routing Information in the Area and Domain 132 Designing OSPF Areas 133 Area Size: How Many Routers in an Area? 134 OSPF Hierarchy 134 Area and Domain Summarization 136 Number of Areas in an OSPF Hub-and-Spoke Design 137 OSPF Hub-and-Spoke Design 137 Issues with Hub-and-Spoke Design 138 OSPF Hub-and-Spoke Network Types 140 OSPF Area Border Connection Behavior 141 Fast Convergence in OSPF 142 OSPF Exponential Backoff 143 Tuning OSPF Parameters 143 OSPF LSA Pacing 145 OSPF Event Processing 145 Bidirectional Forwarding Detection 145 Designing Scalable BGP Designs 146 Scaling BGP Designs 146 Full-Mesh IBGP Scalability 147 Scaling IBGP with Route Reflectors 148 BGP Route Reflector Definitions 148 Route Reflector Basics 150 Scaling IBGP with Confederations 151 BGP Confederation Definitions 151 Confederation Basics 151 Confederations Reduce Meshing 152 Deploying Confederations 154 Summary 155 References 157 Review Questions 158
Chapter 4 Advanced WAN Services Design Considerations 161 Advanced WAN Service Layers 161 Enterprise Optical Interconnections 162 Overview of SONET and SDH 163 Enterprise View of SONET 164 WDM Overview 165 CWDM Technical Overview 165 DWDM Technical Overview 166 DWDM Systems 167 RPR Overview 168 RPR in the Enterprise 168 Metro Ethernet Overview 170 Metro Ethernet Service Model 170 Metro Ethernet Architecture 170 Metro Ethernet LAN Services 172 Ethernet Private Line Service 173 Ethernet Relay Service 174 Ethernet Wire Service 175 Ethernet Multipoint Service 175 Ethernet Relay Multipoint Service 176 Any Transport over MPLS 176 Ethernet over MPLS 177 End-to-End QoS 179 Shaping and Policing on Subrate Ethernet WAN 180 Choosing the Right Service 181 VPLS Overview 181 VPLS Architecture Model 182 VPLS in the Enterprise 183 Hierarchical VPLS Overview 184 Scaling VPLS 184 QoS Issues with EMS or VPLS 186 EMS or VPLS and Routing Implications 186 VPLS and IP Multicast 187 VPLS Availability 187 MPLS VPN Overview 187 Customer Considerations with MPLS VPNs 188 Routing Considerations: Backdoor Routes 189 Routing Considerations: Managed Router Combined with Internal Routing 189 Routing Considerations: Managed Router from Two Service Providers 190 Implementing Advanced WAN Services 191 Advanced WAN Service Selection 192 Business Risk Assessment 192 WAN Features and Requirements 194 SLA Overview 195 SLA Monitoring 196 Application Performance Across the WAN 197 WAN CPE Selection Considerations 198 Cisco PfR Overview 200 Cisco PfR Operations 200 Cisco PfR Design and Deployment Considerations 203 Summary 204 References 205 Review Questions 206
Chapter 5 Enterprise Data Center Design 211 Designing the Core and Aggregation Layers 212 Data Center Architecture Overview 2
Chapter 1 The Cisco Enterprise Architecture 1 Reviewing Cisco Enterprise Architecture 1 The Hierarchical Model 2 Example Hierarchical Network 3 Enterprise Network Design for Cisco Architectures 4 Service and Application Integration 7 Network Services 7 Network Applications 9 Modularity in Cisco Network Architectures for the Enterprise 9 Reviewing the Cisco PPDIOO Approach 12 PPDIOO Network Lifecycle Approach 13 Benefits of the Lifecycle Approach 14 Using the Design Methodology Under PPDIOO 16 Identifying Customer Requirements 16 Characterizing the Existing Network and Sites 17 Designing the Topology and Network Solutions 18 Dividing the Network into Areas 18 Summary 20 References 21 Review Questions 21
Chapter 2 Enterprise Campus Network Design 23 Designing High Availability in the Enterprise Campus 24 Enterprise Campus Infrastructure Review 24 Access Layer 24 Distribution Layer 26 Core Layer 27 Collapsed-Core Model 29 High-Availability Considerations 30 Implement Optimal Redundancy 30 Provide Alternate Paths 32 Avoid Single Points of Failure 33 Cisco NSF with SSO 33 Routing Protocol Requirements for Cisco NSF 34 Cisco IOS Software Modularity Architecture 35 Example: Software Modularity Benefits 37 Designing an Optimum Design for Layer 2 38 Recommended Practices for Spanning-Tree Configuration 38 Cisco STP Toolkit 40 STP Standards and Features 40 Recommended Practices for STP Hardening 41 Recommended Practices for Trunk Configuration and Vlan Trunking Protocol 43 Dynamic Trunking Protocol 45 Recommended Practices for UDLD Configuration 46 Recommended Practices for EtherChannel 47 Port Aggregation Protocol 49 Link Aggregation Control Protocol 49 Supporting Virtual Switching Systems Designs 50 Common Access-Distribution Block Designs 51 Multichassis EtherChannels and VSS 52 VSS Design Considerations 53 Dual Active Detection and Recovery 54 VSS Design Best Practices 55 Developing an Optimum Design for Layer 3 55 Managing Oversubscription and Bandwidth 56 Bandwidth Management with EtherChannel 56 Bandwidth Management with 10 Gigabit Interfaces 57 Link Load Balancing 57 Link Load Balancing with EtherChannel 58 EtherChannel Design Versus Equal-Cost Multipathing 59 Routing Protocol Design 60 Build Redundant Triangles 60 Peer Only on Transit Links 60 Summarize at the Distribution Layer 62 First-Hop Redundancy 64 Preempt Delay Tuning 65 Elimination of FHRP in VSS Designs 66 Overview of Gateway Load Balancing Protocol 67 Optimizing FHRP Convergence 69 Supporting a Layer 2 to Layer 3 Boundary Design 71 Layer 2 to Layer 3 Boundary Design Models 71 Layer 2 Distribution Switch Interconnection 71 Layer 3 Distribution Switch Interconnection (with HSRP) 72 Layer 3 Distribution Switch Interconnection (with GLBP) 72 Layer 3 Distribution Switch with VSS Interconnection 73 Layer 3 Access to Distribution Interconnection 74 EIGRP Access Design Recommendations 75 OSPF Access Design Recommendations 76 Potential Design Issues 77 Daisy Chaining Access Layer Switches 77 Cisco StackWise Technology in the Access Layer 78 Too Much Redundancy 79 Too Little Redundancy 80 Example: Impact of an Uplink Failure 80 Example: Impact on Return-Path Traffic 82 Asymmetric Routing (Unicast Flooding) 82 Unicast Flooding Prevention 83 Supporting Infrastructure Services 84 IP Telephony Considerations 84 IP Telephony Extends the Network Edge 84 PoE Requirements 85 Power Budget and Management 87 Multi-VLAN Access Port 89 Soft Phones and Voice VLANs 90 QoS Considerations 90 Recommended Practices for QoS 91 Transmit Queue Congestion 91 QoS Role in the Campus 92 Campus QoS Design Considerations 92 Cisco Catalyst Integrated Security Features 93 Port Security Prevents MAC-Based Attacks 93 DHCP Snooping Protects Against Rogue and Malicious DHCP Servers 94 Dynamic ARP Inspection Protects Against ARP Poisoning 94 IP Source Guard Protects Against Spoofed IP Addresses 95 Example Catalyst Integrated Security Feature Configuration 95 Summary 95 References 96 Review Questions 97
Chapter 3 Developing an Optimum Design for Layer 3 101 Designing Advanced IP Addressing 101 IP Address Planning as a Foundation 102 Summary Address Blocks 102 Summarization for IPv6 103 Changing IP Addressing Needs 104 Planning Addresses 104 Applications of Summary Address Blocks 105 Implementing Role-Based Addressing 105 Bit Splitting for Route Summarization 106 Example: Bit Splitting for Area 1 107 IPv6 Address Planning 107 Bit Splitting for IPv6 108 Addressing for VPN Clients 109 NAT in the Enterprise 109 NAT with External Partners 110 Design Considerations for IPv6 in Campus Networks 111 IPv6 Campus Design Considerations 111 Dual-Stack Model 112 Hybrid Model 112 Service Block Model 114 Designing Advanced Routing 115 Route Summarization and Default Routing 115 Originating Default Routes 116 Stub Areas and Default Route 117 Route Filtering in the Network Design 118 Inappropriate Transit Traffic 118 Defensive Filtering 120 Designing Redistribution 121 Filtered Redistribution 122 Migrating Between Routing Protocols 123 Designing Scalable EIGRP Designs 123 Scaling EIGRP Designs 124 EIGRP Fast Convergence 124 EIGRP Fast-Convergence Metrics 125 Scaling EIGRP with Multiple Autonomous Systems 126 Example: External Route Redistribution Issue 126 Filtering EIGRP Redistribution with Route Tags 127 Filtering EIGRP Routing Updates with Inbound Route Tags 128 Example: Queries with Multiple EIGRP Autonomous Systems 130 Reasons for Multiple EIGRP Autonomous Systems 130 Designing Scalable OSPF Design 131 Factors Influencing OSPF Scalability 131 Number of Adjacent Neighbors and DRs 132 Routing Information in the Area and Domain 132 Designing OSPF Areas 133 Area Size: How Many Routers in an Area? 134 OSPF Hierarchy 134 Area and Domain Summarization 136 Number of Areas in an OSPF Hub-and-Spoke Design 137 OSPF Hub-and-Spoke Design 137 Issues with Hub-and-Spoke Design 138 OSPF Hub-and-Spoke Network Types 140 OSPF Area Border Connection Behavior 141 Fast Convergence in OSPF 142 OSPF Exponential Backoff 143 Tuning OSPF Parameters 143 OSPF LSA Pacing 145 OSPF Event Processing 145 Bidirectional Forwarding Detection 145 Designing Scalable BGP Designs 146 Scaling BGP Designs 146 Full-Mesh IBGP Scalability 147 Scaling IBGP with Route Reflectors 148 BGP Route Reflector Definitions 148 Route Reflector Basics 150 Scaling IBGP with Confederations 151 BGP Confederation Definitions 151 Confederation Basics 151 Confederations Reduce Meshing 152 Deploying Confederations 154 Summary 155 References 157 Review Questions 158
Chapter 4 Advanced WAN Services Design Considerations 161 Advanced WAN Service Layers 161 Enterprise Optical Interconnections 162 Overview of SONET and SDH 163 Enterprise View of SONET 164 WDM Overview 165 CWDM Technical Overview 165 DWDM Technical Overview 166 DWDM Systems 167 RPR Overview 168 RPR in the Enterprise 168 Metro Ethernet Overview 170 Metro Ethernet Service Model 170 Metro Ethernet Architecture 170 Metro Ethernet LAN Services 172 Ethernet Private Line Service 173 Ethernet Relay Service 174 Ethernet Wire Service 175 Ethernet Multipoint Service 175 Ethernet Relay Multipoint Service 176 Any Transport over MPLS 176 Ethernet over MPLS 177 End-to-End QoS 179 Shaping and Policing on Subrate Ethernet WAN 180 Choosing the Right Service 181 VPLS Overview 181 VPLS Architecture Model 182 VPLS in the Enterprise 183 Hierarchical VPLS Overview 184 Scaling VPLS 184 QoS Issues with EMS or VPLS 186 EMS or VPLS and Routing Implications 186 VPLS and IP Multicast 187 VPLS Availability 187 MPLS VPN Overview 187 Customer Considerations with MPLS VPNs 188 Routing Considerations: Backdoor Routes 189 Routing Considerations: Managed Router Combined with Internal Routing 189 Routing Considerations: Managed Router from Two Service Providers 190 Implementing Advanced WAN Services 191 Advanced WAN Service Selection 192 Business Risk Assessment 192 WAN Features and Requirements 194 SLA Overview 195 SLA Monitoring 196 Application Performance Across the WAN 197 WAN CPE Selection Considerations 198 Cisco PfR Overview 200 Cisco PfR Operations 200 Cisco PfR Design and Deployment Considerations 203 Summary 204 References 205 Review Questions 206
Chapter 5 Enterprise Data Center Design 211 Designing the Core and Aggregation Layers 212 Data Center Architecture Overview 2
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