Method for implement virtual leased line
一种虚拟局域网、拓扑发现协议的技术,应用在通过路径配置进行数据交换、数字传输系统、电气元件等方向,能够解决封装开销大、配置和维护困难、工作量加大等问题,达到配置维护方便、迅速部署业务、封装开销小的效果
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[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0056] The method for realizing VLL that the present invention proposes, aiming at the present situation that a large number of Ethernet switches are used in the metropolitan area network at present, utilizes the characteristic of Ethernet technology itself, proceeds from technical simplicity and universality, realizes based on VLAN label switching and MPLS expansion, Its basic principle is VLAN exchange and localization, and adopts this kind of technology to establish VLL. The scheme of the present invention uses the VLAN label in the Ethernet 802.1Q encapsulation as a label, uses QinQ technology to realize a two-layer label stack, and uses the Ethernet frame header to encapsulate the payload, and expands the MPLS protocol to realize the automatic allocation of VL...
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