Communication system and method based on IPv6 network

The invention discloses a communication system and method based on an I Pv6 network, and relates to the technical field of network communication. The system comprises a routing device and a server. The routing device comprises a message conversion module; the message conversion module is used for converting the IPv6 message and the identification network message according to the first mapping table of the IPv6 address and the unique identity identifier; the server comprises a mapping proxy service unit and a mapping table maintenance unit; the server is used for establishing a second mapping table of the visible identifier and the unique identity identifier of the communication equipment; the unique identity identifier is compatible with the IPv6 address of the communication equipment. The method comprises the following steps: analyzing and acquiring an IPv6 address of communication equipment according to a unique identity identifier, and storing mapping of the IPv6 address and the unique identity identifier