开发一个以太网帧解析程序，实现以下功能：解析已封装好的Ethernet V2.0帧封装文件（见附件），判断有多少个帧，每个帧的所有字段内容，检测CRC校验是否正确。

-Develop an Ethernet frame analysis program, to achieve the following functions: parsing the encapsulated Ethernet V2.0 frame encapsulation document (see annex), to determine the number of frames, each frame of the contents of all fields to detect CRC checksum is correct.