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为克服MPLS与ATM技术融合时的困难 ,基于ATM特点分析了MPLS应用于ATM环境下很多技术受到限制或有所改变的原因·利用处理路由环的检测方法解决MPLS应用于ATM环境下的路由问题·针对MPLS中的标记对应于ATM信元中的VPI/VCI域 ,流合并意味着VPI/VCI合并的特点 ,应用流合并 /流聚合技术减少标记的使用以改善网络的可扩展性 ,通过对VC合并中信元交织问题解决方案的剖析 ,指出虽然VC合并存在着合并点信元延迟增加以及需要更多缓存空间等缺点 ,但它以牺牲一级节点的转发效率为代价 ,而节省的是合并后的每一级节点的VC ,因而延时也只是相当于增加了一跳
To overcome the difficulties in the integration of MPLS and ATM technologies, the paper analyzes the reasons that many technologies of MPLS are restricted or changed in ATM environment based on the characteristics of ATM. · Solve the routing problem of MPLS applied in ATM environment by using the detection method of routing loops • For labels in MPLS that correspond to VPI / VCI fields in ATM cells, flow merging means VPI / VCI merging. Flow merging / streaming aggregation is used to reduce the use of tags to improve network scalability. Analysis of VC interleaving problem in VC merge indicates that although VC merge has the disadvantages of increased cell delay and more buffer space at the merging point, it sacrifices the forwarding efficiency of the first-level nodes, After each level of node VC, so the delay is only equivalent to an increase of one hop