Towards overlay network in virtual computing environment

Abstract

The potential of wide-area distributed computing systems has not been fully exploited. Resource virtualization gradually is used to promote its computing performance. However, the existing of NAT in networks hinders the communication among distributed systems. This paper argues a structure to solve the obscured connectivity problems with combining virtual machines and virtual networks, and presents an idea of overlay structure, which overcomes the NAT limitation in distributed systems. The overlay structure can support a number of links among guest operating systems in virtual machines, even if the virtual machine monitor is configured as NAT network.