If you need to consolidate resources on Sun servers, consider implementing VNICs and virtual networks. Consolidators at ISPs, telecommunications companies, and large financial institutions can use the following network virtualization features to improve the performance of their servers and networks.
NIC hardware, including the powerful new interfaces that support hardware rings
Multiple MAC addresses for the VNICs
The large amount of bandwidth provided by newer interfaces
You can replace many systems with a single system that implements running multiple zones or virtual machines, without significantly losing separation, security, and flexibility.