IP城域网网元拓扑发现及比对一致性研究

Study on Comparison and Verification of NE's Topology Discovery in IP MAN

本文提取IP城域网的网元架构,针对运营商网监维需求,对基于生成树的IPOSS提出定位到端口的由叶子节点发起直至根节点的网元通用拓扑发现(GTD)算法,在以RADIUS拨号清单比对校验过程中,提出改进的网元加权(WA)拓扑发现算法,改善了拓扑一致性指标。由于运营商对拓扑数据的可靠、可信的电信级要求,提出用户拨号清单作为"蚂蚁"节点,自根节点逆向发现业务拓扑路径的用户"蚂蚁"路径特征拓扑发现(APC)算法。可信的网元拓扑数据能有效提高TMN维护水平,并为全面自动业务开通(APO)提供基础数据。

Extracted the complex MAN switch-connections to abstract network element（NE）topology,for fulfilling the high standards of operator＇s OSS,a general NE＇s topology discovery（GTD）algorithm was promoted to physical port class that started from the leaf node and ended by the root.When comparison and verification with the RADIUS dial-up list,an improved topology discovery algorithm with NE＇s weight-added（WA）was provided to lift the consistency.Due to the operator＇s high needs of dependable and trustable topology data to telecommunication level,a creative ant path characteristic（APC）algorithm was designed to discovery the user logic path from the root to the leaf reversely.The trusted NE＇s topology data not only show up the operator＇s high management,but also prepare for next period of automatic service operation（APO）system.