Design And Implementation Of Topology Discovery Algorithm Of Space Network Management

Space mobile network is a organic system composed of various orbits and types of satellites, which is interconnected according to the optimal, effective and comprehensive utilization principle of space resource. Perfect network management system ensures reliable operation of a computer network and the network performance analysis. As an important part of the network management system, topology discovery is the core of the configuration management and the basis of fault management.Study the topology discovery of space mobile network, based on the characteristics of multiple management domain in the structure of network management system, large time delay in the network communication, and the show of network topology integrates with earth coordinate closely. According to the high dynamic characteristic of satellite networks, this thesis designs a management structure composed of multiple ground stations manage multiple satellite domain networks. Based on this architecture, design a topology discovery algorithm that works in multiple satellite domain networks, which geminate improved the speed of topology discovery. Considering the large delay in space mobile network communication, comparing the existing topology discovery algorithms, this thesis select the topology discovery algorithm based on SNMP protocol. The show of topology discovery algorithm of space mobile network integrates with earth coordinate closely. The base of the management information in the SNMP protocol has been expanded.This thesis, according to the rules of HLA, set up a distributed interactive simulation environment of satellite network . The thesis verifies the feasibility of the topology discovery algorithm.