Cisco Networking Course Notes

Overview of Upcoming Lab and Course Flow

  • Introduction to the next lab using Packet Tracer.

  • Importance of understanding the direction of course material.

  • Requirement for students to log into Net Academy.

  • Completion of chapter one and transition into chapter two.

Module Two: Introductory Concepts

Module 2.1: Operating Systems

  • Definition of operating systems as the software that manages hardware and runs applications.

  • Discussion on various operating systems potentially familiar to students:

    • Windows OS: Commonly used in PCs.

    • macOS: Operating system for Apple Mac products.

    • Linux: Open-source OS available for various hardware, mainly on PCs.

  • Mention of operating systems used in cell phones:

    • iOS: Apple’s operating system for iPhones.

    • Android: Widely used OS for various smartphones with different versions.

  • Overview of networking devices (e.g., switches, routers, firewalls) that also run operating systems.

Cisco's Operating System

  • Explanation of Cisco's proprietary operating system known as Cisco IOS:

    • Distinction made between Cisco IOS and Apple’s iOS.

    • Acknowledgment of the confusion caused by similar naming conventions.

  • Importance of differentiating Cisco IOS from other operating systems in understanding course material.

Understanding Operating System Functions

Basic Functions of Operating Systems

  • Operating systems perform crucial roles, such as:

    • Task scheduling

    • Memory management

    • Disk storage management

  • Emphasis on the behind-the-scenes operations that allow user interactions.

User Interaction with Operating Systems

Graphical User Interface (GUI)

  • Description of the GUI as a user-friendly way to interact with computers.

    • Historical context provided: GUIs were popularized by Macs, with Windows also adopting similar concepts.

    • Examples of GUIs on different devices:

    • Traditional laptops using keyboard and mouse.

    • Smartphones using touch interfaces.

Command Line Interface (CLI)

  • Explanation of CLI as the traditional means of interacting with computing devices:

    • Importance of remembering commands, syntax, and parameters for operation.

    • Challenges associated with using CLI, especially in Cisco IOS where specific commands are necessary to operate networking devices.

Modes of Cisco IOS

Hierarchical Command Structure

  • Cisco IOS features a hierarchical command structure consisting of:

    • User Exec Mode: Limited visibility and no changes allowed. Identified by the > prompt.

    • Privileged Exec Mode: More command access for configurations. Identified by the # prompt.

  • Command to transition from User to Privileged Exec Mode is enable.

Global Configuration Modes

  • Once in Privileged Exec Mode, users can enter Global Configuration Mode with the command configure terminal.

  • From Global Configuration Mode, users can access:

    • Line Configuration Mode for managing lines (e.g., console, vty interfaces).

    • Interface Configuration Mode for managing network interfaces (e.g., FastEthernet).

Navigating Between Command Modes

Essential Commands for Navigation

  • Overview of command syntax and how to navigate through different modes:

    • exit: returns from sub-configuration mode to Global Configuration Mode.

    • end or Ctrl + Z: exits any configuration mode back to Privileged Exec Mode.

    • Commands require careful attention to the command prompt to ensure proper mode is understood.

Practical Exercises and Labs

Introduction to Lab Procedures

  • Reminder of the upcoming lab assignment and expectations:

    • Download instructions from Brightspace and Word document for answering questions.

    • Emphasis on submitting answers in a different color for visibility.

  • Lab components will be facilitated through Net Academy, with guidance on accessing the Packet Tracer file.

Homework and Practice Exercises

  • Encouragement to complete specific quizzes and exercises after tutorial sessions to reinforce learning and command mastering.

  • Reminder about practicing movement through command modes to build familiarity with Cisco IOS commands.