Design and Planning
Subnet and IP Challenges
The first number should be the same. For example 192.50.40.111 and 192.35.36.120
The first two set of numbers must be the same. For example 192.50.40.111 and 192.50.36.120
The first three set of numbers must be the same. Also last number must be 0-255. For example 192.50.40.111 and 192.50.40.120
They all start with strings of 1s in binary.
Their binary form is such that there is an uninterrupted string of 1s only at the beginning of the string. Ex. 255.255.192.0
Technical Development
Assignment 1:
Part 1: Build the Network
Part 2: Investigate Communication
ping 192.168.1.25 (succeeded)
ping 192.168.2.10 (failed)
Record Observations • Which pings succeed? • Which fail? Key Question What determines whether the ping works?
Part 3: Modify and Test Again
ping 192.168.2.10 (failed)
Analyze • Did anything change? • Why or why not?
Scenario A
Change all subnet masks to: 255.0.0.0 Test communication again.
ping 192.168.2.10 (succeeded)
Scenario B
Set: • PC0 → 172.16.1.10 / 255.255.0.0 • PC1 → 172.16.2.20 / 255.255.0.0
ping 192.168.2.10 (failed)
Are they on the same
network?
Scenario C
Create:
• Two PCs that look
“similar” but are NOT
on the same network
• Two PCs that look
“different” but ARE
on the same network
Assignment 2:
Scenario C: Small Business Workspace
Part 1: Device Exploration
Take a screenshot (and explain it) showing: • All devices placed • All devices labeled • Clean, organized layout
Part 2: Design Decisions & Part 3: Final Network Layout
explain the final layout in a paragraph
Testing and Evaluation
Assignment 3:
Part 1: Add the Router & Part 2: Configure Router Interfaces
Fully configured setup with router working
Part 3: Configure Default Gateway on PCs
Default gateways and ip addresses set on a pc in each LAN
Part 4: Test Communication
Communication from LAN 1 to LAN 2
Question to Answer –> What role does the router play in this network?
Assignment 4:
Part 1: Troubleshooting Investigation
1. Ping (Command Prompt)
ping 192.168.2.10 (failed)
2. IP Configuration
PC2 IP Configuration
3. Visual Inspection
Physical Layout
4. Router CLI
Router IOS Command Line Interface
Step 2: Identify the Problem
The second terminal had not yet been configured
Step 3: Apply a Fix
Working Layout
Step 4: Test Again
ping 192.168.2.10 (working)
Reflection and Analysis
Assignment 1 Reflection
- Written Explanation Write your response in one paragraph that answers all of the following. Provide screenshots if they can help support your response. A: Explain how a device determines whether another device is on the same network. B: Describe a situation where two IP addresses look similar but are NOT on the same network. C: Describe a situation where two IP addresses look different but ARE on the same network. D Why is a router required when devices are on different networks?
Assignment 2 Reflection:
Write at least one well-developed paragraph that explains your design decisions based on your assigned scenario. Your paragraph must include: • Why you selected the specific devices in your network • Why certain parts of your network are wired and others are wireless • Whether you chose a peer-to-peer or client-server model, and why
Assignment 3 Reflection:
- Written Explanation (One Paragraph Required) Write one well-developed paragraph that answers: Explain how the router allowed devices on different LANs to communicate. Include the role of the default gateway. Your paragraph must include: • Explanation of how the router connects networks • Role of the router interfaces • Role of the default gateway • Evidence from your ping results
Assignment 4 Reflection:
Write one well-developed paragraph that answers: Describe one network issue you encountered and how you diagnosed and fixed it. Include the tools you used and the evidence that confirmed your solution. Your paragraph must include: ● What the problem was ● How you discovered it ● What steps you took to fix it ● Which tools you used ● Evidence that the network is now working