Unit 1: Hierarchical Network Designs
Introduction
Hierarchical Network Design Overview
Enterprise Network Campus Design
Network Requirements
Structured Engineering Principles
Hierarchical Network Design
Network Hierarchy
The Access Layer
Distribution Layer
The Core Layer
Two-Tier Collapsed Core Design
Cisco Enterprise Architecture
Modular Design
Modules in the Enterprise Architecture
Cisco Enterprise Architecture Model
Cisco Enterprise Architecture Model
Cisco Enterprise Campus
Cisco Enterprise Edge
Service Provider Edge
Remote Functional Area
Enterprise Branch
Enterprise Teleworker
Enterprise Data Center
Evolving Network Architectures
IT Challenges
Emerging Enterprise Architectures
Emerging Network Architectures
Cisco Borderless Networks
Collaboration Architecture
Data Center and Virtualization
Expanding the Network
Summary
Practice
Class Activities
Packet Tracer Activities
Check Your Understanding Questions
Unit 2: Connecting the WAN
Introduction
WAN Technologies Overview
Why a WAN?
Are WANs Necessary?
Evolving Networks
Small Office
Campus Network
Branch Networks
Distributed Network
WAN Operations
WANs in the OSI Model
Common WAN Terminology
WAN Devices
Circuit-Switched Networks
Packet-Switched Networks
Selecting a WAN Technology
WAN Link Connection Options
Service Provider Network Infrastructure
Private WAN Infrastructures
Leased Lines
Dialup
ISDN
Frame Relay
ATM
Ethernet WAN
MPLS
VSAT
Public WAN Infrastructure
DSL
Cable
Wireless
3G/4G Cellular
VPN Technology
Selecting WAN Services
Choosing a WAN Link Connection
What Is the Purpose of the WAN?
What Is the Geographic Scope?
What Are the Traffic Requirements?
Summary
Practice
Class Activities
Labs
Check Your Understanding Questions
Unit 3: Point-to-Point Connections
Introduction
Serial Point-to-Point Overview
Serial Communications
Serial and Parallel Ports
Serial Communication
Point-to-Point Communication Links
Time-Division Multiplexing
Statistical Time-Division Multiplexing
TDM Examples — Sonet and SDM
Demarcation Point
DTE-DCE
Serial Cables
Serial Bandwidth
HDLC Encapsulation
WAN Encapsulation Protocols
HDLC Encapsulation
HDLC Frame Types
Configuring HDLC Encapsulation
Troubleshooting a Serial Interface
PPP Operation
Benefits of PPP
Introducing PPP
Advantages of PPP
LCP and NCP
PPP Layered Architecture
PPP — Link Control Protocol (LCP)
PPP — Network Control Protocol (NCP)
PPP Frame Structure
PPP Sessions
Establishing a PPP Session
LCP Operation
LCP Packet
PPP Configuration Options
NCP ExplainedConfigure PPP
Configure PPP
PPP Configuration Options
PPP Basic Configuration Command
PPP Compression Commands
PPP Link Quality Monitoring Command
PPP Multilink Commands
Verifying PPP Configuration
PPP Authentication
PPP Authentication Protocols
Password Authentication Protocol (PAP)
Challenge Handshake Authentication Protocol (CHAP)
PPP Encapsulation and Authentication Process
Configuring PPP Authentication
Configuring PPP with Authentication
Troubleshoot WAN Connectivity
Troubleshoot PPP
Troubleshooting PPP Serial Encapsulation
Debug PPP
Troubleshooting a PPP Configuration with Authentication
Summary
Practice
Class Activities
Labs
Packet Tracer Activities
Check Your Understanding Questions
Unit 4: Frame Relay
Introduction
Introduction to Frame Relay
Benefits of Frame Relay
Introducing Frame Relay
Benefits of Frame Relay WAN Technology
Dedicated Line Requirements
Cost-Effectiveness and Flexibility of Frame Relay
Frame Relay Operation
Virtual Circuits
Multiple Virtual Circuits
Frame Relay Encapsulation
Frame Relay Topologies
Frame Relay Address Mapping
Local Management Interface (LMI)
LMI Extensions
Using LMI and Inverse ARP to Map Addresses
Advanced Frame Relay Concepts
Access Rate and Committed Information Rate
Frame Relay Example
Bursting
Frame Relay Flow Contro
Configure Frame Relay
Configure Basic Frame Relay
Basic Frame Relay Configuration Commands
Configuring a Static Frame Relay Map
a Static Frame Relay Map
Configure Subinterfaces
Reachability Issues
Solving Reachability Issues
Configuring Point-to-Point Subinterfaces
Example: Configuring Point-to-Point Subinterface
Troubleshoot Connectivity
Troubleshoot Frame Relay
Verifying Frame Relay Operation: Frame Relay Interface
Verifying Frame Relay Operation: LMI Operations
Verifying Frame Relay Operation: PVC Status
Verifying Frame Relay Operation: Inverse ARP
Troubleshooting Frame Relay Operation
Summary
Practice
Class Activities
Labs
Packet Tracer Activities
Check Your Understanding Questions
Unit 5: Network Address Translation for IPv4
Introduction
NAT Operation
NAT Characteristics
IPv4 Private Address Space
What Is NAT?
NAT Terminology
How NAT Works
Types of NAT
Static
Dynamic NAT
Port Address Translation (PAT)
Next Available Port
Comparing NAT and PAT
Benefits of NAT
Benefits of NAT
Disadvantages of NAT
Configuring NAT
Configuring Static NAT
Configuring Static NAT
Analyzing Static NAT
Verifying Static NAT
Configuring Dynamic NAT
Dynamic NAT Operation
Configuring Dynamic NAT
Analyzing Dynamic NAT
Verifying Dynamic NAT
Configuring Port Address Translation (PAT)
Configuring PAT: Address Pool
Configuring PAT: Single Address
Analyzing PAT
Verifying PAT
Port Forwarding
Port Forwarding
SOHO Example
Configuring Port Forwarding with IOS
Configuring NAT and IPv6
NAT for IPv6?
IPv6 Unique Local Addresses
NAT for IPv6
Troubleshooting NAT
Troubleshooting NAT: show Commands
Troubleshooting NAT: debug Command
Case Study
Summary
Practice
Class Activities
Labs
Packet Tracer Activities
Check Your Understanding Questions
Unit 6: Broadband Solutions
Introduction
Teleworking
Benefits of Teleworking
Introducing Teleworking
Employer Benefits of Teleworking
Community and Government Benefits
Individual Benefits of Teleworking
Detriments to Telework
Business Requirements for Teleworker Services
Teleworker Solution
Teleworker Connectivity Requirements
Comparing Broadband Solutions
Cable
What is a Cable System?
Cable and the Electromagnetic Spectrum
DOCSIS
Cable Components
DSL
What is DSL?
DSL Connections
Separating Voice and Data in ADSL
Broadband Wireless
Types of Broadband Wireless Technologies
Selecting Broadband Solutions
Comparing Broadband Solutions
Configuring xDSL Connectivity
PPPoE Overview
PPPoE Motivation
PPPoE Concepts
Configuring PPPoE
PPPoE Configuration
Summary
Practice
Class Activities
Labs
Check Your Understanding Questions
Unit 7: Securing Site-to-Site Connectivity
Introduction
VPNs
Fundamentals of VPNs
Introducing VPNs
Benefits of VPNs
Types of VPNs
Remote-Access VPNs
Site-to-Site GRE Tunnels
Fundamentals of Generic Routing Encapsulation
Introduction to GRE
Characteristics of GRE
Configuring GRE Tunnels
GRE Tunnel Configuration
GRE Tunnel Verificatio
Introducing IPsec
Internet Protocol Security
IPsec
IPsec Security Services
IPsec Framework
Confidentiality with Encryption
Encryption Algorithms
Diffie-Hellman Key Exchange
Integrity with Hash Algorithms
IPsec Authentication
IPsec Protocol Framework
Remote Access
Remote-Access VPN Solutions
Types of Remote-Access VPNs
Cisco SSL VPN
Cisco SSL VPN Solutions
IPsec Remote-Access VPNs
IPsec Remote Access
Cisco Easy VPN Server and Remote
Cisco Easy VPN Client
Comparing IPsec and SSL
Summary
Practice
Class Activities
Labs
Packet Tracer Activities
Check Your Understanding Questions
Unit 8: Monitoring the Network
Introduction
Syslog
Syslog Operation
Introduction to Syslog
Syslog Operation
Syslog Message Format
Service Timestamp
Configuring Syslog
Syslog Server
Default Logging
Router and Switch Commands for Syslog Clients
Verifying Syslog
SNMP
SNMP Operation
Introduction to SNMP
SNMP Operation
SNMP Agent Traps
SNMP Versions
Community Strings
Management Information Base Object ID
Configuring SNMP
Steps for Configuring SNMP
Verifying SNMP Configuration
Security Best Practices
NetFlow
NetFlow Operation
Introducing NetFlow
Understanding NetFlow
Network Flows
Configuring NetFlow
Verifying NetFlow
Examining Traffic Patterns
Identifying NetFlow Collector Functions
NetFlow Analysis with a NetFlow Collector
Summary
Practice
Class Activities
Labs
Packet Tracer Activities
Check Your Understanding Questions
Unit 9: Troubleshooting the Network
Objectives
Key Terms
Introduction
Troubleshooting with a Systematic Approach
Network Documentation
Documenting the Network
Network Topology Diagrams
Network Baseline Performance Level
Establishing a Network Baseline
Measuring Data
Troubleshooting Process
General Troubleshooting Procedures
Gathering Symptoms
Questioning End Users
Isolating the Issue Using Layered Models
Using Layered Models for Troubleshooting
Troubleshooting Methods
Guidelines for Selecting a Troubleshooting Method
Network Troubleshooting
Troubleshooting Tools
Software Troubleshooting Tools
Hardware Troubleshooting Tools
Using a Syslog Server for Troubleshooting
Symptoms and Causes of Network Troubleshooting
Physical Layer Troubleshooting
Data Link Layer Troubleshooting
Network Layer Troubleshooting
Transport Layer Troubleshooting — ACLs
Transport Layer Troubleshooting — NAT for IPv4
Application Layer Troubleshooting
Troubleshooting IP Connectivity
Components of Troubleshooting End-to-End Connectivity
End-to-End Connectivity Problem Initiates Troubleshooting
Step 1 - Verify the Physical Layer
Step 2 - Check for Duplex Mismatches
Step 3 - Verify Layer 2 and Layer 3 Addressing on the Local Network
Step 4 - Verify Default Gateway
Step 5 - Verify Correct Path
Step 6 - Verify the Transport Layer
Step 7 - Verify ACLs
Step 8 - Verify DNS
Summary
Practice
Class Activities
Packet Tracer Activities
Check Your Understanding Questions