【摘要】 提出了一个基于 MPL S的带宽保证的 N- to- 1保护方法 ,它采用了基于约束的最短路径的选路思想 ,提出了动态和静态保护方案 .该方案充分利用了 MPL S所具有的 ER- L SP和 CR- L SP的优点 ,和 MPL S特有的保护机制 ,具有重路由快 ,分组丢失率低 ,数据包逆序少的特点 .它既能提供普通数据链路的保护 ,也适合用于 Vo IP和 VOD传输的骨干链路 .它能极大地提高传统 IP网络的故障恢复能力 .本文对算法的实现进行了详细的描述 .并对所提出的算法进行了部分仿真更多还原

【Abstract】 The paper proposes an N to 1 protection method on the basis of MPLS bandwidth guarantee, which adopts the route selection thought based on constraint OSPF. Both dynamic and static protection schemes are suggested. The schemes make full use of the advantages of ER LSP and CR LSP that MPLS possesses, and the protection mechanism that is unique to MPLS. There are several features of this proposal, such as fast reroute, low percentage of packets losing, fewer inverse order of data packets. The method provides protection for ordinary data links, and is suitable to backbone links of VoIP and VOD transmission. The realization of algorithm and its simulation are described in detail.更多还原