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亚星游戏官网-yaxin222  二级通信军士

注册:2007-12-41
发表于 2011-7-26 15:42:12 |显示全部楼层
QinQ技术白皮书

摘要:QinQ是在802.1Q VLAN的基础上又增加了一层VLAN标签,它拓展了VLAN空间,为了适应城域以太网的发展,QinQ封装、终结的方式也越来越丰富,在运营商的业务精细化运营方面得到了越来越深入的应用,本文对QinQ技术进行全方位的阐述。

关键词:QinQ,灵活QinQ,QinQ Stacking子接口,QinQ Termination子接口,VLL VPLS, PWE3

目录
1 前言............................................................................................................................1
2 技术先容....................................................................................................................1
2.1 QinQ报文格式.................................................................................................2
2.2 QinQ封装.........................................................................................................2
2.2.1 基于端口的QinQ封装............................................................................2
2.2.2 基于流的QinQ封装................................................................................2
2.2.3 在路由子接口上进行QinQ封装..............................................................3
2.3 QinQ终结.........................................................................................................4
2.3.1 终结子接口作为用户的网关设备...........................................................4
2.3.2 QinQ和核心网MPLS/BGP三层VPN对接...............................................6
2.3.3 QinQ终结子接口支撑用户主备机制.......................................................6
2.3.4 QinQ和核心网VLL/PWE3对接..............................................................8
2.3.5 QinQ和核心网VPLS对接......................................................................8
2.4 QinQ报文转发流程........................................................................................10
2.4.1 全程采用QinQ技术..............................................................................11
2.4.2 QinQ终结于核心网边缘......................................................................11
3 典型应用..................................................................................................................12
3.1 ME网络中公众用户业务对QinQ的使用..........................................................12
3.2 企业用户专线互连.........................................................................................13
4 结束语......................................................................................................................13
附录A 参考资料..............................................................................................................14
附录B 缩略语..................................................................................................................14

[ 本帖最后由 tomtuo 于 2011-7-27 10:28 编辑 ]

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