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Description Contents Features Author
Description
Working at a Small-to-Medium Business or ISP
CCNA Discovery Learning Guide
Working at a Small-to-Medium Business or ISP, CCNA Discovery Learning
Guide is the official supplemental textbook for the Working at a
Small-to-Medium Business or ISP course in the Cisco® Networking Academy® CCNA®
Discovery curriculum version 4.1. The course, the second of four in the new
curriculum, teaches networking concepts by applying them to a type of network
you might encounter on the job in a small-to-medium business or ISP. After
successfully completing the first two courses in the CCNA Discovery curriculum,
you can choose to complete the CCENT® (Cisco Certified Entry Network
Technician) certification exam, which would certify that you have developed the
practical skills required for entry-level networking support positions and have
an aptitude and competence for working with Cisco routers, switches, and Cisco
IOS® Software.
The Learning Guide, written and edited by instructors, is designed as
a portable desk reference to use anytime, anywhere to reinforce the material
from the course and organize your time. In addition, the book includes expanded
coverage of CCENT/CCNA exam topics.
The books features help you focus on important concepts to succeed in this
course:
- Chapter ObjectivesReview core concepts by answering the focus questions
listed at the beginning of each chapter.
- Key TermsRefer to the lists of networking vocabulary introduced and
highlighted in context in each chapter. The Glossary defines each key
term.
- Summary of Activities and LabsMaximize your study time with this complete
list of all associated exercises at the end of each chapter.
- Check Your UnderstandingEvaluate your readiness with the end-of-chapter
questions that match the style of questions you see in the online course
quizzes. The answer key explains each answer.
- Challenge Questions and ActivitiesApply a deeper understanding of the
concepts with these challenging end-of-chapter questions and activities. The
answer key explains each answer.
- Hands-on LabsMaster the practical, hands-on skills of the course by
performing all the tasks in the course labs and additional challenge labs
included in Part II of the Learning Guide.
Allan Reid is the curriculum lead for CCNA and a CCNA and CCNP® instructor
at the Centennial College CATC in Toronto, Canada.
Jim Lorenz is an instructor and curriculum developer for the Cisco
Networking Academy.
How ToLook for this icon to study the steps you need to learn to perform
certain tasks.
Interactive ActivitiesReinforce your understanding of topics with more than
30 different exercises from the online course identified through-out the book
with this icon. The files for these activities are on the accompanying
CD-ROM.
Packet Tracer Activities Explore and visualize networking concepts using
Packet Tracer exercises interspersed throughout most chapters. The files for
these activities are on the accompanying CD-ROM. Packet Tracer v4.1 software
developed by Cisco is available separately.
Hands-on LabsMaster the practical, hands-on skills of the course by working
through all 42 course labs and 3 additional labs included in this book. The
labs are an integral part of the CCNA Discovery curriculum; review the core
text and the lab material to prepare for all your exams.
Companion CD-ROM
The CD-ROM includes
- Interactive Activities
- Packet Tracer Activity Files
- CCENT Study Guides
- IT Career Information
- Taking Notes
- Lifelong Learning
top
Contents
Introduction
Part I: Concepts
Chapter 1 The Internet and Its Uses
Objectives 1
Key Terms 1
What Is the Internet? 2
The Internet and Standards 2
E-Commerce 2
Communications 2
Collaboration and Training 3
ISPs and ISP Services 4
Internet Service Providers 4
Delivering Internet Services to End Users 5
Dialup Access 5
DSL 5
Cable Modem 6
Satellite 6
Dedicated Bandwidth Options 6
Point of Presence 7
Internet Hierarchy 7
Tier 1 ISPs 9
Tier 2 ISPs 9
Tier 3 ISPs 9
Identifying the Structure of the Internet 9
ISP Connectivity
ISP Requirements
Roles and Responsibilities Within an ISP
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 2 Help Desk
Objectives
Key Terms
Help Desk Technicians
ISP Help Desk Organization
Roles of ISP Technicians
Interacting with Customers
OSI Model
Using the OSI Model
OSI Model Protocols and Technologies
Step 1: Upper Layers Create the Data
Step 2: Layer 4 Packages the Data for End-to-End Transport
Step 3: Layer 3 Adds the Network IP Address Information
Step 4: Layer 2 Adds the Data Link Layer Header and Trailer
Step 5: Layer 1 Converts the Data into Bits for Transmission
Troubleshooting Using the OSI Model
Bottom-Up Approach
Top-Down Approach
Divide-and-Conquer Approach
Help Desk Troubleshooting Example
ISP Troubleshooting
Help Desk Troubleshooting Scenarios
E-mail Issues
Host Configuration Issues
Customer Connectivity Issues
Creating and Using Help Desk Records
Customer Site Procedures
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 3 Planning a Network Upgrade
Objectives
Key Terms
Common Issues
Site Survey
Physical and Logical Topologies
Star Topologies
Mesh Topologies
Network Requirements Documentation
Planning the Network Upgrade
Network Upgrades
Phase 1: Requirements Gathering
Phase 2: Selection and Design
Phase 3: Implementation
Phase 4: Operation
Phase 5: Review and Evaluation
Physical Environment
Cabling Considerations
Structured Cable
Purchasing and Maintaining Equipment
Purchasing Equipment
Selecting Network Devices
Selecting LAN Devices
Speed and Types of Ports/Interfaces
Expandability
Manageability
Cost
Selecting Internetworking Devices
Connectivity
Features
Cost
Network Equipment Upgrades
Reliability and Availability
IP Addressing Plan
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 4 Planning the Addressing Structure
Objectives
Key Terms
IP Addressing in the LAN
Review of IP Addresses
Hierarchical Addressing
Classful Addressing
Subnetting Concepts
Classless Interdomain Routing (CIDR)
Subnetting a Network
Network Expansion Requirements
Proposed Solution
Classful Subnetting
Custom Subnet Masks
Communicating Between Subnets
IPv6
NAT and PAT
Basic Network Address Translation (NAT)
IP NAT Terms
Static and Dynamic NAT
Port-Based Network Address Translation
IP NAT Issues
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 5 Configuring Network Devices
Objectives
Key Terms
Initial ISR Configuration
Physical Setup of the ISR
Bootup Process
Startup Configuration File
Running Configuration File
In-Band and Out-of-Band Router Configuration
Out-of-Band Management
In-Band Management
Cisco IOS Programs
Configuring an ISR with SDM
SDM Express
Basic Configuration
LAN IP Address
DHCP
Configuring a Serial WAN Connection
Cisco SDM and SDM Express
Configuring Dynamic NAT Using Cisco SDM
Configuring a Router Using IOS CLI
Command-Line Interface and Modes
Using the Cisco IOS CLI
Using show Commands
Basic Configuration
Configuring an Interface
Configuring a Default Route
Configuring DHCP Services
Step 1: Create the DHCP Address Pool
Step 2: Specify the Network or Subnet
Step 3: Exclude IP Addresses
Step 4: Specify the Domain Name
Step 5: Specify the DNS Server IP Address
Step 6: Set the Default Gateway
Step 7: Set the Lease Duration
Step 8: Verify the Configuration
Configuring Static NAT Using Cisco IOS CLI
Backing Up a Cisco Router Configuration to a TFTP Server
Connecting the CPE to the ISP
Installing the CPE
Customer Connections over a WAN
Point-to-Point
Circuit-Switched
Packet-Switched
Choosing a WAN Connection
Configuring WAN Connections
Initial Cisco 2960 Switch Configuration
Standalone Switches
Power Up the Cisco 2960 Switch
Connecting the LAN Switch to the Router
CDP
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 6 Routing
Objectives
Key Terms
Enabling Routing Protocols
Routing Basics
Directly Connected Routes
Dynamically Updated Routes (Dynamic Routes)
Default Route
Static Routes
Routing Protocols
Common Interior Routing Protocols
RIP
EIGRP
Link-State Protocols: OSPF
Routing Within an Organization
Configure and Verify RIP
Exterior Routing Protocols
Autonomous Systems
Routing Between Autonomous Systems
Routing Across the Internet
Exterior Routing Protocols and the ISP
Configure and Verify BGP
Summary
Activities and Labs
Check Your Understanding
Chapter 7 ISP Services
Objectives
Key Terms
Introducing ISP Services
ISP Services
Reliability and Availability
Reliability
Availability
Protocols That Support ISP Services
Review of TCP/IP Protocols
Application Layer Protocols
Transport Layer Protocols
TCP and UDP
TCP
UDP
Differences Between TCP and UDP
Supporting Multiple Services
Domain Name Service
TCP/IP Hosts File
DNS
Resource Records and Domain Namespace
Domain Name Servers
Resolvers
DNS Name Resolution
Forward Lookup Zones
Reverse Lookup Zones
Primary Zones
Secondary Zones
Provisioning DNS Servers
Using ISP DNS Servers
Using Local DNS Servers
Services and Protocols
Supporting HTTP and HTTPS
Supporting FTP
Protocol Interpreter (PI)
Data Transfer Process (DTP)
Supporting SMTP, POP3, and IMAP
Simple Mail Transfer Protocol (SMTP)
Post Office Protocol Version 3 (POP3)
Internet Message Access Protocol (IMAP4)
Summary
Activities and Labs
Check Your Understanding
Challenge Questions and Activities
Chapter 8 ISP Responsibility
Objectives
Key Terms
ISP Security Considerations
ISP Security
Password Security
Extraneous Services
Patch Management
Application Security
User Rights
Security Scanning
Best Practices for Security
Data Encryption
Web Servers
E-mail Servers
Telnet Servers
FTP Servers
File Servers
Security Tools
Denial-of-Service Attacks
DoS
DDoS
DRDoS
Access Lists and Port Filtering
Port Filtering
Access Lists
Firewalls
IDS and IPS
IDS
IPS
Wireless Security
Changing Default Settings
Enabling Authentication
MAC Address Filtering
WEP
WPA
WPA2
Host Security
Known Attacks
Exploitable Services
Worms and Viruses
Back Doors and Trojans
Monitoring and Managing the ISP
Service-Level Agreements
Monitoring Network Link Performance
Device Management Using In-Band Tools
Telnet
Secure Shell (SSH)
Using SNMP and Syslog
SNMP
Syslog
Backups and Disaster Recovery
Causes of Data Loss
Hardware Failure
User Error
Theft
Malicious Activity
Operating System Failure
Backup Media
Tape Media
Optical Media
Hard Disk Media
Solid-State Media
Methods of File Backup
Normal (Full)
Differential
Incremental
Backup System Maintenance
Swap Media
Review Backup Logs
Perform Trial Restores
Perform Drive Maintenance
Backing Up and Restoring Cisco IOS Image Files
Using TFTP to Update the IOS Image
Using ROMmon to Recover the IOS Image
Best Practices for Disaster Recovery
Summary
Activities and Labs
Check Your Understanding
Chapter 9 Troubleshooting
Objectives
Troubleshooting Methodologies and Tools
The OSI Model and Troubleshooting
Troubleshooting Methodologies
Top-Down
Bottom-Up
Divide-and-Conquer
Troubleshooting Tools
Network Topologies
Software Troubleshooting Tools
Hardware Troubleshooting Tools
Troubleshooting Layer 1 and Layer 2 Issues
Layer 1 and 2 Problems
Troubleshooting Device Hardware and Boot Errors
Troubleshooting Cable and Device Port Errors
Excessive Noise
Excessive Collisions
Excessive Runt Frames
Late Collisions
Troubleshooting LAN Connectivity Issues
Troubleshooting WAN Connectivity Issues
Serial x Is Down, Line Protocol Is Down (DTE)
Serial x Is Up, Line Protocol Is Down (DTE)
Serial x Is Up, Line Protocol Is Down (DCE)
Serial x Is Up, Line Protocol Is Up (Looped)
Serial x Is Up, Line Protocol Is Down (Disabled)
Serial x Is Administratively Down, Line Protocol Is Down
Troubleshooting Layer 3 IP Addressing Issues
Review of Layer 3 Functionality and IP Addressing
IP Design and Configuration Issues
IP Address Planning and Allocation Issues
DHCP and NAT Issues
Troubleshooting Layer 3 Routing Issues
Layer 3 Routing Issues
Connected Route Problems
Static and Default Route Problems
Dynamic Route Problems
Dynamic Routing Errors
Troubleshooting Layer 4 and Upper Layer Issues
Layer 4 Traffic Filtering Errors
Troubleshooting Upper-Layer Problems
Step 1: Ping the Default Gateway
Step 2: Verify End-to-End Connectivity
Step 3: Verify Routing Configuration
Step 4: Verify NAT Operation
Step 5: Verify Firewall Filtering Rules
Using Telnet to Check Upper-Layer Connectivity
Preparing for Cisco Certification
Knowledge, Skills, and Abilities
Networking Knowledge, Skills, and Abilities
Making the Commitment
Creating a Plan
Practicing Test Taking
Visit the Testing Center
Format of the Examination
Summary
Activities and Labs
Check Your Understanding
Chapter 10 Putting It All Together
Summary Activity
Activities and Labs
Part II: Labs
Chapter 1 Lab: The Internet and Its Uses
Lab 1-1: Mapping ISP Connectivity Using traceroute (1.2.3)
Objectives
Background/Preparation
Task 1: Run the tracert Utility from a Host Computer
Task 2: Interpret tracert Outputs to Determine ISP Connectivity
Task 3: Map the Connectivity of Your ISP
Routes Traced Worksheet
Chapter 2 Lab: Help Desk
Chapter 3 Lab: Planning a Network Upgrade
Lab 3-1: Evaluating a Cabling Upgrade Plan (3.2.4)
Objectives
Background/Preparation
Task 1: Examine the Existing Floor Plan
Task 2: Evaluate the Plan for the New Floor Space
Task 3: Examine the Floor Space and Wiring Plan
Task 4: Reflection
Chapter 4 Lab: Planning the Addressing Structure
Lab 4-1: Subnetting a Network (4.1.5)
Objective
Background/Preparation
Task 1: Analyze the Network
Task 2: Calculate the Custom Subnet Mask
Task 3: Specify the Host IP Addresses
Task 4: Consider Other Subnetting Options
Task 5: Reflection
Lab 4-2: Determining PAT Translations (4.2.4)
Objectives
Background/Preparation
Task 1: Determine the IP Address of the Computer
Task 2: Determine the IP Addresses of the Gateway Router or ISR
Task 3: Display Baseline netstat Results
Task 4: Display Active Network Connections
Task 5: Determine Translated Addresses
Task 6: Reflection
Chapter 5 Lab: Configuring Network Devices
Lab 5-1: Powering Up an Integrated Services Router (5.1.3)
Objectives
Background/Preparation
Part 1: Initial Router Setup and Startup
Task 1: Position the Router and Connect the Ground Wire (Optional)
Task 2: Install the Compact Flash Memory Card (Optional)
Task 3: Connect the PC and Configure the Terminal Emulation Program
Task 4: Power Up the ISR
Task 5: Troubleshoot a Nonworking Router
Part 2: Displaying Router Information Using show Commands
Task 1: Display the Router Running Configuration
Task 2: Display the Router Startup Configuration
Task 3: Save the Running-Config to the Startup-Config
Task 4: Display the Router System Information Using the show version
Command
Task 5: Reflection
Lab 5-2: Configuring an ISR with SDM Express (5.2.3)
Objectives
Background/Preparation
Task 1: Configure the PC to Connect to the Router, and Then Launch Cisco
SDM
Task 2: Perform Initial Basic Configuration
Task 3: Configure the LAN IP Address
Task 4: Deselect the DHCP Server
Task 5: Configure the WAN Interface
Task 6: Enable the Firewall and Security Settings
Task 7: Review and Complete the Configuration
Task 8: Reflection
Lab 5-3: Configuring Dynamic NAT with SDM (5.2.4)
Objective
Background/Preparation
Task 1: Establish a Connection from the PC to the Router
Task 2: Configure SDM to Show Cisco IOS CLI Commands
Task 3: Launch the Basic NAT Wizard
Task 4: Select the WAN Interface for NAT
Task 5: Reflection
Lab 5-4: Configuring Basic Router Settings with the Cisco IOS CLI
(5.3.5)
Objectives
Background/Preparation
Task 1: Configure Host IP Settings
Task 2: Log In to Each Router, and Configure a Hostname and Password
Task 3: Show the Router Running Configuration
Task 4: Configure the Serial Interface on R1
Task 5: Display Information About the Serial Interface on R1
Task 6: Configure the Serial Interface on R2
Task 7: Display Information About the Serial Interface on R2
Task 8: Verify That the Serial Connection Is Functioning
Task 9: Configure the FastEthernet Interface on R1
Task 10: Display Information About the FastEthernet Interface on R1
Task 11: Configure the FastEthernet Interface on R2
Task 12: Display Information About the FastEthernet Interface on R2
Task 13: Save the Configuration on Both Routers
Task 14: Check Both Router Configurations
Task 15: Verify That the FastEthernet Connection to Each Router Is
Functioning
Task 16: Test Connectivity (Optional Challenge)
Lab 5-5: Configuring DHCP with SDM and the Cisco IOS CLI (5.3.7)
Objectives
Background/Preparation
Task 1: Configure Basic Router Settings Using IOS, and Configure PAT Using
SDM
Task 2: Configure and Verify DHCP Using IOS
Task 3: Reflection
Lab 5-6: Configuring PAT with SDM and Static NAT Using Cisco IOS (5.3.8)
Objectives
Background/Preparation
Task 1: Configure Basic Router Settings Using IOS, and Configure PAT Using
SDM
Task 2: Configure and Verify Static NAT Using IOS
Task 3: Reflection
Lab 5-7: Managing Router Configuration Files Using HyperTerminal
(5.3.9a)
Objectives
Background/Preparation
Task 1: Configure Host IP Settings
Task 2: Log In to Router R1, and Configure the Basic Settings
Task 3: Display the R1 Router Configuration
Task 4: Save the Configuration on R1
Task 5: Start Capturing the Running Configuration File
Task 6: Stop Capturing the Configuration File
Task 7: Clean Up the Captured Configuration File
Task 8: Erase the Current Startup Configuration, and Restart the Router
Task 9: Reconfigure the R1 Router from the Saved Text File
Task 10: Modify the R1 Text File, and Use It to Configure the R2 Router
Task 11: Verify That the Network Is Functioning
Lab 5-8: Managing Router Configuration Files Using TFTP (5.3.9b)
Objectives
Background/Preparation
Task 1: Build the Network and Verify Connectivity
Task 2: Use TFTP to Save a Cisco IOS Configuration
Task 3: Use TFTP to Restore a Cisco IOS Configuration
Task 4: Reflection
Lab 5-9: Planning a WAN Upgrade (5.4.3)
Objective
Background/Preparation
Task 1: Identify the Business Requirements for the WAN Upgrade
Task 2: List Available WAN Options for the Business
Task 3: Identify the Best WAN Connection Option for the Business
Task 4: Group Discussion
WAN Upgrade Proposal
Lab 5-10: Powering Up a Switch (5.5.2)
Objectives
Background/Preparation
Task 1: Position and Ground the Switch (Optional)
Task 2: Connect the Computer to the Switch
Task 3: Configure the PC Terminal Emulation Program
Task 4: Power Up the Switch
Task 5: Troubleshoot a Nonworking Switch
Task 6: Reflection
Lab 5-11: Configuring the Cisco 2960 Switch (5.5.4)
Objectives
Background/Preparation
Task 1: Connect the Hosts to the Switch, and Configure Them
Task 2: Connect the Router to the Switch, and Configure the Router
Task 3: Perform an Initial Configuration on the Switch
Task 4: Configure the Management Interface on VLAN 1
Task 5: Verify Configuration of the Switch
Task 6: Verify Connectivity Using ping and Telnet
Task 7: Determine Which MAC Addresses the Switch Has Learned
Task 8: Configure Basic Port Security
Task 9: Connect a Different PC to the Secure Switch Port
Alternative Task 9: Change the MAC Address of H2 (Optional)
Task 10: Reactivate the Port
Task 11: Set Speed and Duplex Options for a Port
Task 12: Exit the Switch
Task 13: Reflection
Chapter 6 Lab: Routing
Lab 6-1: Creating a Network Diagram from Routing Tables (6.1.2)
Objectives
Background/Preparation
Task 1: Examine the Routing Table Entries for Router R1
Task 2: Examine the Routing Table Entries for Router R2
Task 3: Document Router Interfaces and IP Addresses
Task 4: Create a Network Topology Diagram
Task 5: Reflection
Lab 6-2: Configuring and Verifying RIP (6.1.5)
Objective
Background/Preparation
Task 1: Build the Network and Configure the Routers
Task 2: Configure the Hosts with the Proper IP Address, Subnet Mask, and
Default Gateway
Task 3: Check the Routing Table Entries
Task 4: Test End-to-end Connectivity
Task 5: Configure the Routing Protocol of the Routers
Task 6: Show the Routing Tables for Each Router
Task 7: Test End-to-end Connectivity
Task 8: Use debug to Observe RIP Communications
Task 9: Reflection
Lab 6-3: Configuring BGP with Default Routing (6.2.4)
Objectives
Background/Preparation
Task 1: Configure Basic Information on Each Router
Task 2: Configure the Default and Static Routes
Task 3: Configure BGP on Both ISP Routers
Task 4: View the Routing Tables
Task 5: Verify Connectivity
Task 6: View BGP Information on the ISP Routers
Task 7: Reflection
Chapter 7 Lab: ISP Services
Lab 7-1: Editing the HOSTS File in Windows (7.3.1)
Objective
Background/Preparation
Task 1: Locate the HOSTS File in Windows
Task 2: Edit the HOSTS File
Task 3: Test the New Name Mapping
Task 4: Reflection
Lab 7-2: Examining Cached DNS Information on a Windows DNS Server
(7.3.3)
Objective
Background/Preparation
Task 1: Use the Windows Server DNS Administrative Tool
Task 2: Perform a DNS Lookup
Task 3: Examine the Cached DNS Entries
Task 4: Reflection
Lab 7-3: Creating Primary and Secondary Forward Lookup Zones (7.3.3)
Objective
Background/Preparation
Task 1: Create a Primary Forward Lookup Zone on Windows
Task 2: Add a Host Record to the Primary Forward Lookup Zone
Task 3: Create a Secondary Forward Lookup Zone
Task 4: Reflection
Chapter 8 Labs: ISP Responsibility
Lab 8-1: Securing Local Data and Transmitted Data (8.1.3)
Objectives
Background/Preparation
Part 1: Securing Local Data
Task 1: Secure Bobs Files Folder
Task 2: Test Joes Access to Bobs Files
Part 2: Identifying a Secure Communication Channel When Transmitting Data
over the Internet
Task 1: Identify a Secure Web Page
Task 2: Examine Secure Access to an Untrusted Source Warning
Lab 8-2: Planning for Access Control Lists and Port Filters (8.2.1)
Objective
Background/Preparation
Task 1: Restrict Client A to One Subnet
Task 2: Restrict Client B Access to Server A, But Allow Access to Server B
and the Internet
Task 3: Allow Only Client A to Access the Routers Using Only SSH
Lab 8-3: Researching Anti-X Software Products (8.2.5)
Objective
Background/Preparation
Task 1: Identify Three Products
Task 2: Compare Pricing
Lab 8-4: Interpreting a Service-Level Agreement (8.3.1)
Objectives
Background/Preparation
Task 1: Review Typical Customer Needs
Task 2: Analyze a Sample SLA and Identify Its Key Components
I. General Terms of the Service-Level Agreement
II. Warranty and Liability
III. Services Provided to [Client]
IV. System Availability
V. System Monitoring
VI. System Notifications
VII. Change Management Process
VIII. Penalties for Service Outages
IX. ISP Facilities Policies
X. Billing
XI. Signatures
Appendix 1: Services and Pricing
Appendix 2: System Requests Contact Lists
Lab 8-5: Conducting a Network Capture with Wireshark (8.3.2)
Objectives
Background/Preparation
Task 1: Install and Launch Wireshark
Task 2: Select an Interface to Use for Capturing Packets (Optional)
Task 3: Start a Network Capture
Task 4: Analyze Web Traffic Information (Optional)
Task 5: Filter a Network Capture
Task 6: Reflection
Lab 8-6: Managing Remote Network Devices with Telnet (8.3.3a)
Objectives
Background/Preparation
Task 1: Build the Network and Verify Connectivity
Task 2: Establish a Telnet Session from a Host Computer
Task 3: Perform Basic Telnet Operations Between Two Routers
Task 4: Perform Telnet Operations Between Multiple Routers
Task 5: Experiment with Multiple Linked Telnet Sessions
Task 6: Reflection
Lab 8-7: Configuring a Remote Router Using SSH (8.3.3b)
Objectives
Background/Preparation
Task 1: Configure the ISR to Accept SSH Connections Using SDM
Task 2: Configure SSH on a Non-SDM Router (Optional)
Task 3: Configure the SSH Client, and Connect the PC to the ISR
Task 4: Check the Configuration of the Cisco 1841 ISR
Task 5: Log Out of the Cisco 1841 ISR
Task 6: Reflection
Lab 8-8: Planning a Backup Solution (8.4.2)
Objective
Background/Preparation
Task 1: Choose the Media and Backup Hardware
Task 2: Design a Backup Plan and Procedure
Lab 8-9: Managing Cisco IOS Images with TFTP (8.4.3a)
Objectives
Background/Preparation
Task 1: Build the Network and Verify Connectivity
Task 2: Collect Information About the Router Memory and IOS Image
Task 3: Use TFTP to Save the Cisco IOS Image
Task 4: Use TFTP to Update a Cisco IOS Image
Task 5: Reflection
Lab 8-10: Managing Cisco IOS Images with ROMmon and TFTP (8.4.3b)
Objectives
Background/Preparation
Task 1: Build the Network and Verify Connectivity
Task 2: Collect Information About the Router Memory and IOS Image
Task 3: Use TFTP to Save the Current Cisco IOS Image
Task 4: Consider IOS Restoration Options
Task 5: Working in ROMmon Mode
Task 6: Use ROMmon and tftpdnld to Restore an IOS Image (Optional)
Task 7: Reflection
Chapter 9 Lab: Troubleshooting
Lab 9-1: Organizing CCENT Objectives by OSI Layer (9.1.1)
Objectives
Background/Preparation
Task 1: Access the CCENT Exam Web Page
Task 2: Review the OSI Model Layers
Task 3: Reflection
Lab 9-2: Using Wireshark to Observe the TCP Three-Way Handshake (9.1.3)
Objectives
Background/Preparation
Task 1: Prepare Wireshark to Capture Packets
Task 2: Generate and Analyze Captured Packets
Task 3: Reflection
Lab 9-3: Identifying Cabling and Media Errors (9.2.3)
Objectives
Background/Preparation
Task 1: Review Ethernet Device Cabling
Task 2: Build the Network and Configure Devices
Task 3: Verify Cabling and Interface Link LEDs
Task 4: Verify Interface Status and Connectivity
Task 5: Observe the Effects of Using Different Cable
Task 7: Reflection
Lab 9-4: Troubleshooting LAN Connectivity (9.2.4)
Objectives
Background/Preparation
Task 1: Build the Network and Configure Devices
Task 2: Verify Cabling, Interface LEDs, and Link Speed
Task 3: Verify Switch Interface Information
Task 4: Change Duplex Settings
Task 5: Change Speed Settings
Task 6: Set Both Duplex and Speed Settings
Task 7: Check Settings and Characteristics of Neighboring Devices and
Interfaces
Task 8: Change Router Duplex Settings
Task 9: Reflection
Lab 9-5: Troubleshooting WAN Connectivity (9.2.5)
Objectives
Background/Preparation
Task 1: Build the Network and Configure Devices
Task 2: Verify Cabling and Interface LEDs
Task 3: Verify Router Interface Status and Connectivity
Task 4: Change the Clock Rate
Task 5: Remove the Serial Cable and Observe the Effects
Task 6: Change the Encapsulation Type
Task 7: Reflection
Lab 9-6: Designing an IP Subnetting Scheme for Growth (9.3.3)
Objectives
Background/Preparation
Task 1: Analyze the Network Topology for Subnetting Requirements
Task 2: Develop the Subnet Scheme
Task 3: Document Network Device and Host Interfaces
Task 4: Reflection
Lab 9-7: Correcting RIPv2 Routing Problems (9.4.2)
Objectives
Background/Preparation
Task 1: Build the Network and Configure Devices
Task 2: Load Routers with the Supplied Scripts
Task 3: Troubleshoot the BRANCH1 Router
Task 4: Troubleshoot HQ
Task 5: Troubleshoot BRANCH2
Task 6: Remove Auto-Summary
Task 7: Reflection
Task 8: Documentation
Lab 9-8: Using Telnet and SSH to Access Networking Devices (9.5.3)
Objectives
Background/Preparation
Part 1. Working with Telnet to Verify Device Configurations and
Connectivity
Task 1: Build the Network and Verify Network Layer Connectivity
Task 2: Establish a Telnet Session from a Host Computer
Task 3: Perform Basic Telnet Operations Between the Routers
Task 4: Perform Telnet Operations Between Multiple Routers
Task 5: Remove the vty Password from R3
Part 2. Working with SSH to Verify Device Configurations and
Connectivity
Task 1: Configure SSH on Router R2
Task 2: Log In to R2 Using the R1 CLI SSH Client
Task 3: Reflection
Lab 9-9: Identifying Necessary Knowledge, Skills, and Abilities (9.6.2)
Objectives
Background/Preparation
Task 1: Review the Definitions for KSAs
Task 2: Review an Existing Lab
Task 3: Identify the Knowledge, Skills, and Abilities Required for the
Lab
Lab 9-10: Exploring the CCNA Prep Center (9.6.5)
Objectives
Background/Preparation
Task 1: Identify the Tools and Resources Available
Task 2: Explore the Cisco CCNA Prep Center Website
Task 3: Explore the Exam Study Area and Take Practice Exams
Task 4: Reflection
Chapter 10 Capstone Project: Putting It All Together
Objectives
Background/Preparation
Part A: Review the Existing Network and Customer Work Order
Part B: Develop the Subnet Scheme
Task 1: Determine the Number of Hosts and Subnets
Task 2: Calculate the Custom Subnet Mask
Task 3: Identify Subnet and Host IP Addresses
Part C: Document Network Device Interfaces and Physical Topology
Task 1: Document the Cisco 1841 Router Interfaces and Host IP Addresses
Task 2: Document the Linksys Interfaces and Host IP Addresses
Task 3: Diagram the Upgraded Network
Part D: Configure Devices, and Verify Default Settings
Task 1: Verify the Default Settings for the Cisco 1841 Customer Router
Task 2: Configure the Cisco 1841 Customer Router
Task 3: Verify Default Settings for the Linksys, and Set the SSID
Task 4: Verify Default Settings for the Cisco 2960 Switch
Task 5: Verify That Host PCs Are DHCP Clients
Part E: Connect Network Devices, and Verify Connectivity
Task 1: Connect the Network Devices
Task 2: Verify Device Configurations and Network Connectivity
Part F: Configure Port Security for the Switch
Task 1: Display the MAC Address Table Entry for the Port to Which the Wired
Host Is Connected
Task 2: Clear the Dynamically Learned MAC Address Entry
Task 3: Shut Down the Port, Configure It as an Access Port, and Then Issue
the Port Security Commands
Task 4: Ping from the Wired Host to the AnyCompanyX Router Default
Gateway
Task 5: Display the Port Security Using the show port-security interface
Command
Task 6: Remove the Wired Host Cable from the Switch Port and Connect the
Cable from Another PC
Task 7: Reconnect the Original Host to Its Port and Restore the Port
Appendix A Check Your Understanding and Challenge Questions Answer
Key
Appendix B Router Boot and Password Recovery Labs
Appendix C Lab Equipment Interfaces and Initial Configuration
Restoration
Glossary
1587132109 TOC 4/14/2008
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Features
The all-new authorized textbook for the second course of the new Cisco
Networking Academy Program CCNA Discovery curriculum
- A portable reference that aligns 1:1 with the online course modules
- Numerous features to enhance learning and assist in concept retention
- Written by Accademy instructors and the course developers
- Textbook and Labs all in one book
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Author
Allan Reid is the curriculum lead and a CCNA/CCNP instructor at the
Centennial College CATC in Toronto, Canada. He is a professor in the
Information and Communications Engineering Technology department and is an
instructor and program supervisor for the School of Continuing Education at
Centennial College. He has developed and taught networking courses for both
private and public organizations and has been instrumental in developing and
implementing numerous certificate, diploma, and degree programs in networking.
Allan also is a curriculum developer for the Cisco Networking Academy. Outside
his academic responsibilities, he has been active in the computer and
networking fields for more than 25 years. Currently he is a principal in a
company specializing in the design, management, and security of network
solutions for small and medium-sized companies. Allan authored the first
edition of WAN Technologies CCNA 4 Companion Guide(Cisco Press, ISBN
1-58713-172-2) and Using a Networkers Journal, which is a supplement to
A Networkers Journal(Cisco Press, ISBN 1-58713-158-7). Most recently,
he coauthored the CCNA Discoveryonline academy courses Networking for
Home and Small Businessesand Introducing Routing and Switching in the
Enterprisewith Jim Lorenz.
Jim Lorenz is an instructor and curriculum developer for the Cisco
Networking Academy. He has coauthored several Cisco Press titles, including
Fundamentals of UNIX Companion Guide, Second Edition (ISBN
1-58713-140-4), Fundamentals of UNIX Lab Companion, Second Edition (ISBN
1-58713-139-0), and the third editions of the CCNA Lab Companions. He
has more than 20 years of experience in information systems, ranging from
programming and database administration to network design and project
management. Jim has developed and taught computer and networking courses for
numerous public and private institutions. As the Cisco academy manager at
Chandler-Gilbert Community College in Arizona, he was instrumental in starting
the Information Technology Institute (ITI) and developed a number of
certificates and degree programs. Most recently, Jim coauthored the CCNA
Discoveryonline academy courses Networking for Home and Small
Businessesand Introducing Routing and Switching in the
Enterprisewith Allan Reid.
Product Description
Working at a Small-to-Medium Business or ISP
CCNA Discovery Learning Guide
Working at a Small-to-Medium Business or ISP, CCNA Discovery Learning Guide is the official supplemental textbook for the Working at a Small-to-Medium Business or ISP course in the Cisco® Networking Academy® CCNA® Discovery curriculum version 4.1. The course, the second of four in the new curriculum, teaches networking concepts by applying them to a type of network you might encounter on the job in a small-to-medium business or ISP. After successfully completing the first two courses in the CCNA Discovery curriculum, you can choose to complete the CCENT® (Cisco Certified Entry Network Technician) certification exam, which would certify that you have developed the practical skills required for entry-level networking support positions and have an aptitude and competence for working with Cisco routers, switches, and Cisco IOS® Software.
The Learning Guide, written and edited by instructors, is designed as a portable desk reference to use anytime, anywhere to reinforce the material from the course and organize your time. In addition, the book includes expanded coverage of CCENT/CCNA exam topics.
The book’s features help you focus on important concepts to succeed in this course:
Chapter Objectives—Review core concepts by answering the focus questions listed at the beginning of each chapter.
Key Terms—Refer to the lists of networking vocabulary introduced and highlighted in context in each chapter. The Glossary defines each key term.
Summary of Activities and Labs—Maximize your study time with this complete list of all associated exercises at the end of each chapter.
Check Your Understanding—Evaluate your readiness with the end-of-chapter questions that match the style of questions you see in the online course quizzes. The answer key explains each answer.
Challenge Questions and Activities—Apply a deeper understanding of the concepts with these challenging end-of-chapter questions and activities. The answer key explains each answer.
Hands-on Labs—Master the practical, hands-on skills of the course by performing all the tasks in the course labs and additional challenge labs included in Part II of the Learning Guide.
Allan Reid is the curriculum lead for CCNA and a CCNA and CCNP® instructor at the Centennial College CATC in Toronto, Canada.
Jim Lorenz is an instructor and curriculum developer for the Cisco Networking Academy.
How To—Look for this icon to study the steps you need to learn to perform certain tasks.
Interactive Activities—Reinforce your understanding of topics with more than 30 different exercises from the online course identified through-out the book with this icon. The files for these activities are on the accompanying CD-ROM.
Packet Tracer Activities— Explore and visualize networking concepts using Packet Tracer exercises interspersed throughout most chapters. The files for these activities are on the accompanying CD-ROM. Packet Tracer v4.1 software developed by Cisco is available separately.
Hands-on Labs—Master the practical, hands-on skills of the course by working through all 42 course labs and 3 additional labs included in this book. The labs are an integral part of the CCNA Discovery curriculum; review the core text and the lab material to prepare for all your exams.
Companion CD-ROM
The CD-ROM includes
Interactive Activities
Packet Tracer Activity Files
CCENT Study Guides
IT Career Information
Taking Notes
Lifelong Learning
