Network mode implementation method and device under public cloud architecture

The invention discloses a network mode implementation method and device under a public cloud architecture. The method comprises the following steps: receiving message information of requesting an IP address sent by a first virtual route; analyzing the message information and allocating the first IP address to the first virtual route; identifying a first IP address allocated to the first virtual route according to the MAC address of the first virtual route; and sending configuration files for a user private network and a basic service network to the first virtual route so as to perform networkconfiguration of the user private network and the basic service network. The embodiment of the invention is realized by utilizing pure software and a virtual machine, extra hardware equipment overheadis not needed, the user-defined requirements are met, and user private networks are isolated by virtue of a VLAN and do not influence each other. The network mode implementation method is good in expandability, and the soft r