虚拟专用网(VPNs)发展透视

Perspective of the Development for Virtual Private Networks

基于企业内部建网需要和最新网络技术的发展，较全面详细地阐述了VPNs的有关 概念和相关技术，提出了未来VPNs所应具备的特性特征，最后给出能提供QoS性能的VPNs可 能实现方式。

This paper introduces the relative concepts and techniques in VPNs base d on the need of the development of enterprise networks and network technologies . Some features of future VPNs are given. Finally, the possible methods of imple menting QoS-capable VPNs are presented.