Abstract: Provided are a communication method and apparatus for an external device, allocating an IP address to the external device to access the base station, wherein the external device is connected to the base station through an Ethernet interface of a destination device; searching corresponding relations between internal IP addresses and Ethernet interfaces for the Ethernet interface corresponding to the allocated internal IP address; determining destination device information corresponding to the destination device to which the found Ethernet interface belongs; searching model data of all external devices for model data comprising the destination device information, and establishing a corresponding relation between the found model data and the allocated internal IP address, wherein the model data is configured to identify the external device; and communicating with the external device identified by the model data through the internal IP address corresponding to the model data.