Network virtualization is recognized as an enabling technology for the future Internet. It aims
to overcome the resistance of the current Internet to architectural change. Application of this …

With the development of telecommunication technologies and the proliferation of network
applications in the past decades, the traditional cloud network architecture becomes unable …

Network virtualization allows multiple heterogeneous virtual networks (VNs) to coexist on a
shared infrastructure. Efficient mapping of virtual nodes and virtual links of a VN request onto …

Software Defined Networking (SDN) has emerged as a new paradigm that offers the
programmability required to dynamically configure and control a network. A traditional SDN …

Network virtualization is a powerful way to run multiple architectures or experiments
simultaneously on a shared infrastructure. However, making efficient use of the underlying …

In this paper, we propose virtual data center (VDC) as the unit of resource allocation for
multiple tenants in the cloud. VDCs are more desirable than physical data centers because …

Recent proposals for network virtualization provide a promising way to overcome the
Internet ossification. The key idea of network virtualization is to build a diversified Internet to …

We consider the following well-known problem, which is called the disjoint paths problem.
For a given graph G and a set of k pairs of terminals in G, the objective is to find k vertex …

Due to the fact that no NP-complete problem can be solved in polynomial time (unless P=
NP), many approximability results (both positive and negative) of NP-hard optimization …

Network virtualization is considered an important potential solution to the gradual
ossification of the Internet. In a network virtualization environment, a set of virtual networks …