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
Index
Online Elements
Appendix D Memory Tables
Appendix E Memory Tables Answer Key
Appendix F Study Planner
