Data digest method and equipment for IPv4 and IPv6 dual-stack network

One or more embodiments of the present specification provide a data digest method and equipment for an IPv4 and IPv6 dual stack network. The method comprises the following steps: obtaining a cardinalnumber proportion of IPv4 network flow data and IPv6 network flow data by utilizing a sampling strategy; dividing the data digest structure into a first subspace and a second subspace; adjusting the size of the space allocated to the first subspace and the second subspace by utilizing a space allocation strategy according to the cardinal number proportion obtained by sampling; and identifying version data in the network flow packet header, distinguishing IPv4 and IPv6 network flows according to the version data, compressing and storing the IPv4 network flow data in the first subspace, and compressing and storing the IPv6 network flow data in the second subspace. According to the method, hash conflicts in the data abstract are reduced, mutual interference of network data statistical information of different protoco