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数据业务传送需求的迅猛增长,使得在SDH上构建MSTP传送数据业务已成当今的研究热点。基于虚级联的LCAS技术,能显著地增强了SDH网络的灵活性和健壮性,提高了带宽的利用率。本文依据ITU-TG.7042/Y1305建议中的链路容量调整方案的原理,给出了带宽调整源端和宿端的实现过程,分析了成员状态的安排,并在Xilinx的ISE及Modelsim XE中建立测试平台对系统进行了验证,最终仿真结果表明本文的设计与链路容量调整的要求一致。
The rapid growth of the demand for data service delivery makes the construction of MSTP on SDH transport data services has become a hot research topic today. Based on the virtual concatenation of LCAS technology, SDH network can significantly enhance the flexibility and robustness, improve the bandwidth utilization. Based on the principle of link capacity adjustment scheme proposed in ITU-TG.7042 / Y1305, this paper presents the implementation of bandwidth adjustment of source and sink, analyzes the arrangement of member states and establishes in Xilinx ISE and Modelsim XE The test platform verifies the system. The final simulation results show that the design of this paper is consistent with the requirements of link capacity adjustment.