Modern Computer Architecture and Organization

Modern Computer Architecture and Organization, by Jim Ledin. Published by Packt Publishing.

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Chapter 12, Exercise 3

Create two separate copies of your Ubuntu guest machine in your host system’s VirtualBox environment. Configure both Ubuntu guests to connect to the VirtualBox internal network. Set up the two machines with compatible Internet Protocol addresses. Verify each of the machines can receive a response from the other using the ping command. By completing this exercise, you will have configured a virtual network within your virtualized environment.

Answer

In your host system VirtualBox, open the Settings dialog for the Ubuntu VM you set up in Exercise 1 and select the Network settings. Set the Attached to: network type to Internal, then click OK.
Right-click on the Ubuntu VM in the VirtualBox manager and select Clone… from the context menu. Click Next in the Clone Virtual Machine menu. Leave Full clone selected and click Clone. Wait for the cloning process to complete.
Open a command prompt on your host system and navigate to the installation directory for VirtualBox. On Windows, this command takes you to the default installation location:
```
cd "\Program Files\Oracle\VirtualBox"
```

Start a DHCP server for the intnet VirtualBox network with this command:

VBoxManage dhcpserver add --netname intnet --ip 192.168.10.1 --netmask 255.255.255.0 --lowerip 192.168.10.100 --upperip 192.168.10.199 --enable

Start both of the VMs. Based on the DHCP server settings recommended in the previous step, the VMs should be assigned the IP addresses 192.168.10.100 and 192.168.10.101.
Login to one of the running VMs. Click the downward facing triangle in the upper right corner of the screen. Select Wired Connected from the dialog, then click Wired Settings.
Click the gear icon in the Wired section of the Settings dialog. The machine’s IP address will be displayed. It should be one of the two IP addresses listed in step 5.
Open a terminal window in the VM (press Ctrl+Alt+T)
Ping the other machine. For example, if this machine’s IP address is 192.168.10.100, enter the following command:
```
ping 192.168.10.101
```

You should see a response similar to the following. Press Ctrl+C to stop the updates:

osboxes@osboxes:~$ ping 192.168.10.101
PING 192.168.10.101 (192.168.10.101) 56(84) bytes of data.
64 bytes from 192.168.10.101: icmp_seq=1 ttl=64 time=0.372 ms
64 bytes from 192.168.10.101: icmp_seq=2 ttl=64 time=0.268 ms
64 bytes from 192.168.10.101: icmp_seq=3 ttl=64 time=0.437 ms
64 bytes from 192.168.10.101: icmp_seq=4 ttl=64 time=0.299 ms
^C
--- 192.168.10.101 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3054ms
rtt min/avg/max/mdev = 0.268/0.344/0.437/0.065 ms
osboxes@osboxes:~$ 

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