Method and system for data transmission

摘要

A method for data transmission includes: a router receives a data packet sent by an access device of a first user, where the data packet carries target device selection information including at least a user identity of a second user, and the user identity is associated with at least one access device of the second user; the router obtains a routing address of an optimal access device among access devices associated with the user identity; and the router sends the data packet to the optimal access device according to the routing address.