Jeremy’s IT Lab - CCNA Lecture Notes

Overview

• Free, complete course for CCNA.
• Encouragement to subscribe, like, comment, and share videos.
• Download packet tracer lab from the description link.

Objective

• Test knowledge from Day 12’s lecture in a hands-on environment.
• Understand how packets travel through a network.

Key Questions to Explore

1. Identify Source and Destination MAC Addresses
   • As packets travel between different points.

Question 1: PC1 Pings PC4

• Network Details
  • PC1: 192.168.1.1
  • PC4: 192.168.3.1
• Task: Identify MAC addresses at each point.

Part A: PC1 to SW1

• Source MAC: PC1’s MAC.
• Destination MAC: R1’s G0/0 interface.

Part B: SW1 to R1

• Same as Part A (SW1 does not alter MAC addresses).

Part C: R1 to R2

• Source MAC: R1’s G0/1 interface.
• Destination MAC: R2’s G0/0 interface.

Part D: R2 to R3

• Source MAC: R2’s G0/1 interface.
• Destination MAC: R3’s G0/0 interface.

Part E & F: R3 to SW2 & SW2 to PC4

• Source MAC: R3’s G0/1 interface.
• Destination MAC: PC4’s MAC.

Question 2: PC1 Pings PC3

• Network Details
  • PC1 and PC3 on the same network (192.168.1.0/24).
• Task: Identify MAC addresses.
  • Both steps (A and B) involve direct communication between PC1 and PC3.
• Answer:
  • Source MAC: PC1’s MAC.
  • Destination MAC: PC3’s MAC.

Question 3: Reverse Order Exercise

• Post answers in the video’s comment section.
• Format similar to question 1 but in reverse.
• Identify device and interface, not full MAC addresses.

Closing

• Encouragement to subscribe, like, comment, and share.
• Option to leave tips via links in the description.
• Acceptance of BAT tips via the Brave browser.

These notes capture the essentials of the lecture on packet travel, focusing on MAC address identification in network communications and relevant CLI commands for verification. They are intended to aid in understanding and preparing for CCNA examinations.