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networking-2025-s1/september/lab-2.0.3.md
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# 2.0.3 Packet Tracer - Examine Packets in the Small Office
## Objectives
- Part 1: Create a Simple PDU in Simulation Mode
- Part 2: View Contents of PDUs
- Part 3: Create a Complex PDU in Simulation Mode
## Background / Scenario
In this Packet Tracer activity, you will use the Simulation mode to create PDUs to explore network functionality.
> **Note:** Simulation mode does not work in Physical mode; therefore, Physical mode is locked.
## Procedure
### Part 1: Create a Simple PDU in Simulation Mode
- Step 1: Enter the Office network;
![Figure 1 Entering the Office network](./assets/lab-2.0.3-1.png)
- Step 2: Enter Simulation mode;
![Figure 2 Entering Simulation mode](./assets/lab-2.0.3-2.png)
- Step 3: Create a simple PDU that sends a ping from Office-Admin to Printer0;
![Figure 3 Creating a Simple PDU](./assets/lab-2.0.3-3.png)
- Step 4: Observe traffic moving through the network.
1. PDU goes outbound from the Office-Admin PC to the Office-SW1 switch;
![Figure 4 PDU going outbound from the Office-Admin PC to the Office-SW1 switch](./assets/lab-2.0.3-4.png)
2. Office-SW1 sends a multicast packet to find and get a response from Printer0;
![Figure 5 Office-SW1 sends a multicast packet to find and get a response from Printer0](./assets/lab-2.0.3-5.png)
3. Printer0 replies with a response to Office-SW1
![Figure 6 Printer0 replies with a response to Office-SW1](./assets/lab-2.0.3-6.png)
4. Office-Admin recieves response from Printer0 forwarded by Office-SW1
![Figure 7 Office-Admin recieves response from Printer0 forwarded by Office-SW1](./assets/lab-2.0.3-7.png)
### Part 2: View Contents of PDUs
- Step 1: Use the event list to see PDU information;
![Figure 8 PDU information](./assets/lab-2.0.3-8.png)
- Step 2: Delete the simple PDU.
![Figure 9 Deleting PDU from Simulation Panel](./assets/lab-2.0.3-9.png)
### Part 3: Create a Complex PDU in Simulation Mode
- Step 1: Add a complex PDU to send pings from the PC to the laptop;
![Figure 10 Creating a complex PDU](./assets/lab-2.0.3-10.png)
- Step 2: Configure complex PDU settings to send the pings every 5 seconds;
![Figure 11 Configuring a complex PDU](./assets/lab-2.0.3-11.png)
- Step 3: Observe traffic moving through the network.
![Figure 12 Observing traffic](./assets/lab-2.0.3-12.png)