Mimicry intranet and construction method thereof

The invention relates to a mimicry intranet and a construction method thereof. The construction method comprises the following steps of constructing a heterogeneous subnet for achieving the exchange of data flow and a routing function, constructing a mimicry shunt used for being connected with an external network and N heterogeneous subnets, wherein the mimicry shunt copies and distributes the received external data flow to the N heterogeneous subnets, judges the uplink data flow of the N heterogeneous subnets, and adjusts the distribution state of the uplink data flow of the N heterogeneous subnets according to the judgment result, and constructing a mimicry routing device used for being connected with intranet terminal equipment and the N heterogeneous subnets, wherein the mimicry routing device copies and distributes the received uplink data flow of the intranet terminal device to the N heterogeneous subnets, judges the downlink data flow of the N heterogeneous subnets, and adjuststhe distribution state of