4.1 : Observing ARP in Packet Tracer - Hsanokklis/2022-2023-Tech-journal GitHub Wiki
Summary:
Goals:
- To become familiar with Cisco's network emulator tool - Packet Tracer
- To gain some more exposure to Address Resolution Protocol and Ethernet and develop a deeper understanding of the relationship between these two protocols.
1. Use the Devices Section in the lower left to build a simple network diagram using 4 PCs and a switch
2. Hold the mouse over each computer to see the configuration. Gather information about the devices and answer the following questions
- What is the MAC address of the ethernet adapter on PC0?
000C.CFA8.1091
- Is there an IP address?
No, there is not a IP address
Hold the mouse over the switch to see the configuration.
- Are there IP addresses assigned?
No, there are no IP addresses assigned.
3. Click on PC0 --> desktop tab --> command prompt
- Type arp โa to see the arp table and review to see if there are any entries
There are no arp entries
4. Assign IP addresses to the computers (use 4 addresses on the same network : 10.10.10.X)
What does it mean for PCs to be "on the same network"?
The first 3 numbers in the IP address are called the network ID. This means that if 2 PCs have the same first numbers in their IP addresses, they are on the same network. The last number is called the host ID and its the number assigned to your host machine.
- select the computer --> config --> FastEthernet0
use subnet mask 255.255.255.0
- PC 0 IP Config
- PC 1 IP Config
- PC 2 IP Config
- PC 3 IP Config
5. Examine the address table of the switch
- go to switch --> CLI
- Go into admin mode:
6. Type in show mac-address-table
7.Use Ethernet cables to connect the computers to the switch
Use copper straight-through wires since they are unalike devices
8. On PC0, open the Desktop and select Command Prompt.
9. From the command prompt on PC0, ping PC3 using itโs IP address.
10. Now, inspect the configuration of the Switch in the CLI using show mac-address-table.
