VIRTUAL CLOUD NETWORK LABORATORY BASED ON IAAS
The paper describes a proposed approach to create virtual cloud laboratories aimed at studying network technologies, operating systems and administering in higher educational institutions as well as for network engineering purposes. The approach is based on a visual drawing and set-up of virtual network topology through a browser. The result data is stored in JSON format, which is used for automatic deployment in data center through API system of OpenNebula cloud. After deployment OpenFlow protocol is used to implement a connectivity of virtual network nodes, located on different physical servers. This protocol is supported by Open vSwitches on each physical server and HP 3500 switches in a real network. A small data center was deployed to conduct experimental research. Under conditions of high load and long delay between the client and remote desktop, the remote control flow remains stable, which ensures availability of remote operation with GUI server. The experiment's output shows the efficiency of cloud systems implemnation in IT education.