Design and realization of IMA/DIMA system management based on avionics switched network

The advantages of avionics switched network in network scale and flexibility greatly improve the communication performance of avionics network, promote the development of IMA/DIMA technology and also increase network scale and complexity. Meanwhile, requirements for the management of the avionics system are also on the rise. In this paper, the characteristics of SNMP protocol and airborne switched network are analyzed. The IMA/DIMA system structure is outlined and key demands for system management are extracted According to an IMA system model adopting AFDX as its backbone network with cascading dual integrate processing computers for backup and interconnection, the system management functions of the IMA system are realized in line with the ARINC653 standard partition operating system based on the SNMP protocol, including structure management, fault management, configuration management, etc. specific to LRM/LRU and attached devices under the IMA/DIMA system as well as the dual-machine hot backup function, which can be applied in an IMA/DIMA system consisted of AFDX/FC/TTE and several other airborne switched networks.