| 摘要 |
<p>A method for dynamically determining a media type of a local area network (LAN) to which a network device is connected. A network interface driver software module is executed which is the lowest level of software to communicate with the LAN and which handles the sending and receiving of communication packets to and from the LAN by appending or stripping off packet frame headers. The network interface driver software module has one or more logical boards for processing communication packets having different respective frame types and has one or more configuration tables, each respectively associated with one of the logical boards, which each include a frame type identifying value that identifies a combination of frame type and media type for packets processed by the corresponding logical board. The network interface driver software module also has a service routine which can be accessed via an entry point. One or more protocol stack modules are executed for processing packets that use different respective protocols, and a multiplexer software module is executed which interfaces between the network interface driver software module and the one or more protocol stack modules and which routes packets from the network interface driver software module to the respective protocol stack modules according to the protocol used by the packets. The entry point of the network interface driver service routine is obtained via the multiplexer module. A location of one of the configuration tables is then obtained via the service routine. The frame type identifying value in the one configuration table is then read, and the network media type is determined by comparing the frame type identifying value read from the one configuration table to one or more values that correspond to a predetermined media type. <IMAGE></p> |
