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The design and development of future ground-space integrated networks is one of the hot issues in space technology nowadays because of the long-link delay, high bit-error-rate, asymmetric bandwidth, intermittent links compare with the terrestrial networks. The focus of this paper is to design topology for this hybrid networks with space segments, select appropriate protocols for it and analyze its performance at the same time. The paper does research on these problems based on IP technology of the ground network and CCSDS protocol that special for space communication, proposes an topology to integrate the space network and the ground network using a new mode, that is IP over CCSDS AOS mode; then it designs a data transmission configuration and protocol stack model for the ground/space hybrid network, in the end, the paper analyses the performance of this configuration in the hybrid networks. The results show that the topology and the transmission configuration proposed by the paper have a better performance than the regular configuration and worth to be applied.