However, while there is some overlap between cloud computing security and virtual network security, we emphasize that cloud computing represents a very specific use case of network virtualization and, therefore, poses a significantly distinct set of security challenges.
Despite the wide applicability of network virtualization, the shared use of routing devices and communication channels leads to a series of security-related concerns.
One of these technical challenges is that of network virtualization.
To realize the network resource allocation, we reference the idea of network virtualization and propose resource scheduling virtualization.
The figure gives definition of network virtualization.
In this paper, we have investigated potential areas of network virtualization environment (NVE): a) generic network virtualization, b) the datacenter network virtualization, c) network virtualization in monolithic cloud and d) network virtualization in virtual resources.
Figure 1 shows an example of network virtualization environment.
The existing work on horizontal IaaS federation [1, 3, 10] incorporates full server virtualization and minimal network virtualization while the application of network virtualization in various domains [11, 12] concentrates on one of the two virtualizations.
Investigating the use of Network Function Virtualization (NFV) for the proposed approach: Although GSSM is not specifically targeted for the SDN or the NFV paradigm, the proposed approach could be seen as one of the network functions for a datacenter network.
It also will facilitate transparent network management of virtual network at a granular level (i.e. virtual switch, virtual router etc).. Informally, the horizontal IaaS federation provides a federated IaaS cloud service of virtual servers using full network virtualization out of the datacenter.
