摘要
随着以太网的应用逐渐从LAN扩展到MAN中,802.1Q逐渐表现出了组网上的不适应性。针对802.1Q在城域网组网中的不足,着重讨论了VLAN的扩展技术Q in Q VLAN。本文从Q in Q的基本定义开始,讨论了不同用户数据业务承载的实现、Q in Q实现城域以太网中的服务区分、用Q in Q组建城域网,以及在Q in Q的条件下以太网数据帧的处理过程。最后,文章就Q in Q组网还需解决的其它问题作了简单的介绍。
There exist some problems in networking as the technology of Ethernet extends from LAN to MAN. In this article, Q in Q, the extension of 802.1Q VLAN, is highlighted, and several major issues concerned with Q in Q are addressed. We first present the format of Q in Q, the process of carrying users’ data, and the implementation of different services. Then we give the building of network with Q in Q VLAN. Finally some other problems faced by Q in Q are also put forward.
出处
《计算机工程与科学》
CSCD
2005年第6期18-20,47,共4页
Computer Engineering & Science
基金
国家863计划资助项目(2003AA1Z1180)
