TCP/IP协议

TCP/IP结构对应OSI

TCP/IP                                                                                   OSI

应用层                                                                                   应用层

                                                                                           表示层

                                                                                           会话层

主机到主机层（TCP）（又称传输层）                                             传输层

网络层（IP）(又称互联层)                                                           网络层

网络接口层（又称链路层）                                                         数据链路层

                                                                                             物理层