Introducing virtual machines

1. Morten Bo Nielsen – mon@eal.dk 1/12
Virtual machines
IT technology
Networking
2013 Autumn

2. Morten Bo Nielsen – mon@eal.dk 2/12

3. Morten Bo Nielsen – mon@eal.dk 3/12

4. Morten Bo Nielsen – mon@eal.dk 4/12
Virtualization software
You want to look at libvirt

5. Morten Bo Nielsen – mon@eal.dk 5/12
Networks and virtualization
● Software defined
networks
● Very dependant on
application
No more hardware?

6. Morten Bo Nielsen – mon@eal.dk 6/12
Exercise
Get a virtual machine up and running
You choose the virtualization
software and the OS to run.

7. 7Networks and servers - Mon@eal.dk
Local VM LAN
● Virtual machines form
their own LAN.
● Hidden behind NAT
● Uses Host IP on the
outside

8. 8Networks and servers - Mon@eal.dk
Private VM LAN
● Virtual machines form
their own LAN.
● No connection to the
outside
● One VM may have
two NIC and function
as gateway.

9. 9Networks and servers - Mon@eal.dk
Direct connection
● No VM LAN
● Each virtual machine
has an IP on the
outside LAN
● No difference
between VMs and
host as seen form the
outside.

10. Morten Bo Nielsen – mon@eal.dk 10/12
Exercise
● Setup a virtual machine with an OS
● (Should be done already)
● Ping your neighbor
● Check wireshark
● Change the network settings
● Redo ping
● Go through all the network options
● Document your findings

11. Morten Bo Nielsen – mon@eal.dk 11/12
Storage
Later :-)

12. Morten Bo Nielsen – mon@eal.dk 12/12
Credits & licences
● Content by Morten Bo Nielsen
License: Creative Commons Attribution-NonCommercial-ShareAlike 3.0
Unported License. (http://creativecommons.org/licenses/by-nc-sa/3.0/)
● EAL logo might be an issue, please check before you use it.
● Images: Cisco logo, Juniper logo, VM logos, Xen logo, libvirt logo