CCNP Enterprise Design ENSLD 300-420 Official Cert Guide: Designing Cisco Enterprise Networks (Certification Guide)

Cover
Title Page
Copyright Page
About the Authors
About the Technical Reviewers
Dedications
Acknowledgments
Contents at a Glance
Contents
Chapter 1 Internet Protocol Version 4 (IPv4) Design
	“Do I Know This Already?” Quiz
	Foundation Topics
	IPv4 Header
		ToS
		IPv4 Fragmentation
	IPv4 Addressing
		IPv4 Address Classes
		Class A Addresses
		Class B Addresses
		Class C Addresses
		Class D Addresses
		Class E Addresses
		IPv4 Address Types
		IPv4 Private Addresses
		NAT
	IPv4 Address Subnets
		Mask Nomenclature
		IP Address Subnet Design Example
		Determining the Network Portion of an IP Address
		Variable-Length Subnet Masking
		VLSM Address Assignment: Example 1
		Loopback Addresses
		IP Telephony Networks
		VLSM Address Assignment: Example 2
	IPv4 Addressing Design
		Goals of IPv4 Address Design
		Planning for Future Use of IPv4 Addresses
		Performing Route Summarization
		Planning for a Hierarchical IP Address Network
		Private and Public IP Address and NAT Guidelines
		Steps for Creating an IPv4 Address Plan
		Case Study: IP Address Subnet Allocation
	Address Assignment and Name Resolution
		Recommended Practices of IP Address Assignment
		BOOTP
		DHCP
		DNS
		ARP
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 2 Internet Protocol Version 6 (IPv6) Design
	“Do I Know This Already?” Quiz
	Foundation Topics
	Introduction to IPv6
	IPv6 Header
	IPv6 Address Representation
		IPv4-Mapped IPv6 Addresses
		IPv6 Prefix Representation
	IPv6 Address Scope Types and Address Allocations
		IPv6 Address Allocations
		IPv6 Unicast Addresses
		Global Unicast Addresses
		Link-Local Addresses
		Unique Local IPv6 Address
		Global Aggregatable IPv6 Address
		IPv4-Compatible IPv6 Addresses
		IPv4-Mapped IPv6 Addresses
		IPv6 Anycast Addresses
		IPv6 Multicast Addresses
	IPv6 Mechanisms
		ICMPv6
		IPv6 Neighbor Discovery Protocol
		IPv6 Name Resolution
		Path MTU Discovery
		IPv6 Address-Assignment Strategies
		Manual Configuration
		SLAAC of Link-Local Address
		SLAAC of Globally Unique IPv6 Address
		DHCPv6
		DHCPv6 Lite
		IPv6 Security
	IPv6 Routing Protocols
		RIPng
		EIGRP for IPv6
		OSPFv3
		IS-IS for IPv6
		BGP4 Multiprotocol Extensions (MP-BGP) for IPv6
		IPv6 Addressing Design
		Planning for Addressing with IPv6
		Route Summarization with IPv6
		IPv6 Private Addressing
		IPv6 for the Enterprise
		IPv6 Address Allocation
		Partly Linked IPv4 Address into IPv6
		Whole IPv4 Address Linked to IPv6
		IPv6 Addresses Allocated per Location and/or Type
	IPv4-to-IPv6 Migration Strategies and Deployment Models
		Dual-Stack Migration Strategy
		IPv6 over IPv4 Tunneling Strategy
		Manual Configured Tunnels and GRE Tunnels
		Automatic Tunnel Mechanisms
		6to4 Tunnels
		6RD Tunnels
		IPv6 ISATAP Tunnels
		IPv6/IPv4 Translation Strategy
		DNS64
		NAT64
		Stateless NAT64
		Stateful NAT64
		IPv6 Deployment Models
		Dual-Stack Model
		Hybrid Model
		Service Block Model
		IPv6 Deployment Model Comparison
		IPv6 Comparison with IPv4
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 3 Routing Protocol Characteristics, EIGRP, and IS-IS
	“Do I Know This Already?” Quiz
	Foundation Topics
	Routing Protocol Characteristics
		Static Versus Dynamic Route Assignment
		Interior Versus Exterior Routing Protocols
		Distance-Vector Routing Protocols
		EIGRP
		Link-State Routing Protocols
		Distance-Vector Routing Protocols Versus Link-State Protocols
		Hierarchical Versus Flat Routing Protocols
		Classless Versus Classful Routing Protocols
		IPv4 Versus IPv6 Routing Protocols
		Administrative Distance
	Routing Protocol Metrics and Loop Prevention
		Hop Count
		Bandwidth
		Cost
		Load
		Delay
		Reliability
		Maximum Transmission Unit
		Routing Loop-Prevention Schemes
		Split Horizon
		Poison Reverse
		Counting to Infinity
		Triggered Updates
		Summarization
	EIGRP
		EIGRP Components
		Protocol-Dependent Modules
		Neighbor Discovery and Recovery
		RTP
		DUAL
		EIGRP Timers
		EIGRP Metrics
		EIGRP Packet Types
		EIGRP Design
		EIGRP Stub Routers
		EIGRP Variance Command
		EIGRP for IPv4 Summary
		EIGRP for IPv6 (EIGRPv6) Networks
		EIGRP for IPv6 Design
		EIGRP in the Data Center
		EIGRP for IPv6 Summary
	IS-IS
		IS-IS Metrics
		IS-IS Operation and Design
		IS-IS NET Addressing
		IS-IS DRs
		IS-IS Interface Types
		IS-IS Area Design
		IS-IS Authentication
		IS-IS for IPv6
		IS-IS Summary
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 4 OSPF, BGP, and Route Manipulation
	“Do I Know This Already?” Quiz
	Foundation Topics
	OSPFv2
		OSPFv2 Metric
		OSPFv2 Adjacencies and Hello Timers
		OSPF Message Types
		OSPFv2 Areas
		OSPF Area Design Considerations
		OSPF Router Types
		OSPF DRs
		LSA Types
		Autonomous System External Path Types
		OSPF Stub Area Types
		Stub Areas
		Totally Stubby Areas
		NSSAs
		Virtual Links
		OSPFv2 Router Authentication
		OSPFv2 Summary
	OSPFv3
		OSPFv3 Changes from OSPFv2
		OSPFv3 Areas and Router Types
		OSPFv3 LSAs
		OSPFv3 Summary
	BGP
		BGP Neighbors
		eBGP
		iBGP
		Route Reflectors
		Confederations
		BGP Administrative Distance
		BGP Attributes, Weight, and the BGP Decision Process
		BGP Path Attributes
		Next-Hop Attribute
		Local Preference Attribute
		Origin Attribute
		Autonomous System Path (AS_Path) Attribute
		MED Attribute
		Community Attribute
		Atomic Aggregate and Aggregator Attributes
		Weight Attribute
		BGP Decision Process
		BGP Route Manipulation and Load Balancing
		eBGP Multihop
		BGP Multipath
		BGP Summary
	Route Manipulation
		PBR
		Route Summarization
		Route Redistribution
		Default Metric
		OSPF Redistribution
		Route Filtering
		Transit Traffic
		Bidirectional Forwarding Detection (BFD)
		Graceful Restart and Non-Stop Routing
		Virtual Routing and Forwarding (VRF)
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 5 IP Multicast and Network Management
	“Do I Know This Already?” Quiz
	Foundation Topics
	IP Multicast Review
		Multicast Addresses
		Layer 3 to Layer 2 Mapping
		IGMP
		IGMPv1
		IGMPv2
		IGMPv3
		CGMP
		IGMP Snooping
		Sparse Versus Dense Multicast
		Multicast Source and Shared Trees
		PIM
		PIM-SM
		PIM DR
		Auto-RP
		BIDIR-PIM
		SSM
		MSDP
		Summary of Multicast Protocols
		IPv6 Multicast Addresses
	Network Management Design
		Simple Network Management Protocol
		SNMP Components
		Network Management Design Considerations
		In-Band Versus Out-of-Band Network Management
		Network Management Traffic Prioritization
		MIB
		SNMP Versions
		SNMPv1
		SNMPv2
		SNMPv3
		Other Network Management Technologies
		RMON
		RMON2
		NetFlow
		NetFlow Compared to RMON and SNMP
		CDP
		LLDP
		Syslog
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 6 Enterprise LAN Design and Technologies
	“Do I Know This Already?” Quiz
	Foundation Topics
	Hierarchical Network Models
		Benefits of the Hierarchical Model
		Hierarchical Network Design
		Core Layer
		Distribution Layer
		Access Layer
		Hierarchical Model Examples
		VSS
		Hub-and-Spoke Design
		Collapsed Core Design
		Building Triangles and Redundant Links
		Local Versus End-to-End VLAN Design Models
	LAN Media
		Ethernet Design Rules
		100 Mbps Fast Ethernet Design Rules
		Gigabit Ethernet Design Rules
		1000BASE-LX Long-Wavelength Gigabit Ethernet
		1000BASE-SX Short-Wavelength Gigabit Ethernet
		1000BASE-CX Gigabit Ethernet over Coaxial Cable
		1000BASE-T Gigabit Ethernet over UTP
		10 Gigabit Ethernet Design Rules
		10 Gigabit Ethernet Media Types
		EtherChannel
		Port Aggregation Considerations
		Comparison of Campus Media
		Power over Ethernet (PoE)
	Spanning Tree Protocol Design Considerations
		Spanning Tree Protocol Metrics
		PVST+
		Rapid PVST+
		Alignment of Spanning Tree Protocol with FHRP
		MST
		Cisco Spanning Tree Protocol Toolkit
		PortFast
		UplinkFast
		BackboneFast
		Loop Guard
		Root Guard
		BPDU Guard
		BPDU Filter
		Unidirectional Link Detection (UDLD) Protocol
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 7 Advanced Enterprise Campus Design
	“Do I Know This Already?” Quiz
	Foundation Topics
	Campus LAN Design and Best Practices
		Network Requirements for Applications
		Best Practices for Hierarchical Layers
		Access Layer Best Practices
		Distribution Layer Best Practices
		Core Layer Best Practices
		Campus Layer Best Practices
		VTP Considerations
	High Availability Network Services
		Redundancy Models
		First-Hop Redundancy for LAN High Availability
		Server Redundancy
		Route Redundancy
		Link Media Redundancy
		Redundancy Models Summary
		Large-Building LANs
		Enterprise Campus LANs
		Small and Medium Campus Design Options
		Campus LAN QoS Considerations
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 8 WAN for the Enterprise
	“Do I Know This Already?” Quiz
	Foundation Topics
	WAN Overview
		WAN Defined
		WAN Edge Module
		Enterprise Edge Modules
	WAN Transport Technologies
		Layer 2 VPN
		MPLS Layer 3 VPN
		Metro Ethernet
		SONET/SDH
		Dense Wavelength-Division Multiplexing
		Dark Fiber
		Wireless: 4G/5G
		SD-WAN Customer Edge
		WAN Link Categories
		Ordering WAN Technology
	Site-to-Site VPN Design
		VPN Benefits
		IPsec
		IPsec Direct Encapsulation
		DMVPN
		Service Provider VPNs: Layer 2 Versus Layer 3
		Virtual Private Wire Services
		VPWS Layer 2 VPN Considerations
		Virtual Private LAN Service
		VPLS Layer 2 VPN Considerations
		MPLS Layer 3 VPNs
		MPLS Layer 3 Design Overview
		MPLS Layer 3 VPN Considerations
		Generic Routing Encapsulation
		GETVPN
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 9 WAN Availability and QoS
	“Do I Know This Already?” Quiz
	Foundation Topics
	WAN Design Methodologies
		Response Time
		Throughput
		Reliability
		Bandwidth Considerations
	Design for High Availability
		Defining Availability
		Deployment Models
		Redundancy Options
		Single-Homed Versus Multi-Homed WANs
		Single-Homed MPLS WANs
		Multi-Homed MPLS WANs
		Hybrid WANs: Layer 3 VPN with Internet Tunnels
	Internet Connectivity
		Internet for Remote Sites
		High Availability for the Internet Edge
	Backup Connectivity
		Failover
	QoS Strategies
		Best-Effort QoS
		DiffServ
		IntServ
	Designing End-to-End QoS Policies
		Classification and Marking
		Shaping
		Policing
		Queuing
		Congestion Management
		Priority Queuing
		Custom Queuing
		Weighted Fair Queuing
		Class-Based Weighted Fair Queuing
		Low-Latency Queuing
		Link Efficiency
		Window Size
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 10 SD-Access Design
	“Do I Know This Already?” Quiz
	Foundation Topics
	SD-Access Architecture
		SD-Access Fabric
		Underlay
		Overlay
		Control Plane
		Data Plane
		Automation
		Wireless
		Security and ISE
	SD-Access Fabric Design Considerations for Wired and Wireless Access
		Overlay Design
		Fabric Design
		Control Plane Design
		Border Design
		Segmentation
		Virtual Networks
		Scalability
		Very Small Site Design Considerations
		Small Site Design Considerations
		Medium Site Design Considerations
		Large Site Design Considerations
		Over-the-Top
		Fabric Wireless
		Multicast
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 11 SD-WAN Design
	“Do I Know This Already?” Quiz
	Foundation Topics
	SD-WAN Architecture
		Management Plane
		Orchestration Plane
		Control Plane
		Data Plane
		vEdge Color Attributes
		Overlay Management Protocol (OMP)
		Onboarding and Provisioning
		Zero Touch Provisioning (ZTP)
		Onboarding a vEdge Router via Manual Configuration
		Onboarding Cisco IOS XE SD-WAN Routers
		SD-WAN Security
	SD-WAN Design Considerations
		Control Plane Design
		Scalability
		High Availability and Redundancy
		Site Redundancy
		Transport Redundancy
		Network/Headend Redundancy
		Controller Redundancy
		LAN Design
		vEdge DHCP Server
		Direct Internet Access (DIA)
		Security Design
		VPN Segmentation
		Access Control Lists (ACLs)
		SD-WAN Migration Strategy
		QoS in SD-WAN
		Bidirectional Forwarding Detection (BFD)
		Policies
		Application-Aware Routing
		vEdge Interface Queues
		Multicast over SD-WAN
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 12 Automation
	“Do I Know This Already?” Quiz
	Foundation Topics
	Introduction to Network APIs and Protocols
		Network APIs and Protocol Concepts
		Evolution of Programmability
		Data Encoding Formats
		JSON
		XML
		Data Models
		Model-Driven Programmability Stack
		REST
	YANG, NETCONF, and RESTCONF Explored
		YANG Concepts
		NETCONF Concepts
		RESTCONF Concepts
		NETCONF and RESTCONF Compared
	IETF, OpenConfig, and Cisco YANG Models
		IETF
		OpenConfig
		Cisco YANG Models
	Model-Driven Telemetry
		Streaming Telemetry Data
		Model-Driven Telemetry Concepts
		Subscription Explained
		Periodic Publication
		On-Change Publication
		Dial-In Approaches
		Dial-Out Approaches
	References and Recommended Readings
	Exam Preparation Tasks
	Review All Key Topics
	Complete Tables and Lists from Memory
	Define Key Terms
	Q&A
Chapter 13 Final Preparation
	Getting Ready
	Tools for Final Preparation
		Pearson Cert Practice Test Engine and Questions on the Website
		Accessing the Pearson Test Prep Software Online
		Accessing the Pearson Test Prep Software Offline
		Customizing Your Exams
		Updating Your Exams
		Premium Edition
		Chapter-Ending Review Tools
	Suggested Plan for Final Review/Study
	Summary
Appendix A: Answers to the “Do I Know This Already?” Quiz Questions Q&A Questions
Appendix B: CCNP Enterprise Design ENSLD 300-420 Official Cert Guide Exam Updates
Appendix C: OSI Model, TCP/IP Architecture, and Numeric Conversion
Glossary
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Index
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Online Elements
	Appendix D: Memory Tables
	Appendix E: Memory Tables Answer Key
	Appendix F Study Planner