Research And Implementation Of OSPFv3 Routing Monitoring Technology

With the rapid development of computer network, more and more applications are running on the Internet, and the reliability of network is also more and more important. The technology of routing monitoring can help the administrators find the failure quickly. OSPF is one of the widely used intra-area routing protocols, the research of routing monitoring technology basic on OSPF network is very valuable and useful.Now most of the related research work is focused on the active detection. It's easy to be deployed and implement, but the detection packets would affect the normal data stream, adding additional burden to the network. And some of these technologies would not be supported by some network devices. The more important point is that most of the current research is still foucesed on OSPFv2. The research work on OSPFv3 is very little.Based on the existing research results, in this paper we deeply study the OSPFv3 protocol, propose the detailed algorithm to get the topology information from the analysis of protocol packets. And we also design and implement an OSPFv3 routing monitoring system base on the algorithm. The system adopts the multi-layers structure. This structure separates the on-line monitoring from the off-line analyzing, which can ensure the real-time performance of the monitoring, meanwhile facilitate more complicated analysis. People can get the current topology view through the browser expediently. We also allow user to review the history topology of any time of the history. Users can configure the standard topology of the network step by step. After this, users can compare the current topology view with standard topology view or any history topology view, this function would help users to discover the failure of the network expediently. Users can query the number of different types of 0SPFv3 protocol packets during any history time, they can click one of them to see more details which they are interested in.At the end of this paper, we test the monitoring system by the 24 hours data from CERNET2. The result shows that the system achieves the designing goals well.