TCP/IP各层对应的协议

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TCP/IP的层                                对应的TCP/IP协议                          应用在各层的硬件设备
应用层(Application):                                                                                     

                                                                             

                                              Telnet: 远程登录                                                     应用程序网关在应用层连接两部分应用程序
                                              FTP(File Transfer Protocol):文件传输协议
                                              HTTP(Hyper Text Transfer Protocol):超文本传输协议
                                              SMTP(Simple Mail Transter Protocol):简单邮件传输协议
                                              POP3(Post Office Ptotocol):邮局协议
                                              SNMP(Simple Network Mangement Protocol):简单网络管理协议
                                              DNS(Domain Name System):域名系统
传输层(Transport):                                                                       

                                                                                                                                     传输网关(transport gateway)
                                             TCP(Transmission Control Potocol):传输控制协议                (在传输层连接两个网络)
                                             UDP(User Data Potocol):用户数据协议
网络层(Internet):                                                                                                  多协议路由器(multiprotocol router)
                                             IP(Internet Protocol):网络协议                                          (在异构网络间转发分组)
                                             ARP(Address Resolution Protocol):地址解析协议
                                             RARP(Reverse Address Resolution Protocol) :逆地址解析协议
                                             ICMP(Internet Control Message Protocol):因特网控制消息协议
                                             IGMP(Internet Group Manage Protocol):因特网组管理协议
                                             BOOTP (Bootstrap):可选安全启动协议
数据链路层(Data Link):                                                                                               网桥(bridge)交换机(switcher)
                                             HDLC(High Data Link Control):高级数据链路控制               (在LAN之间存储-转发数据链路针)
                                             SLIP(Serial Line IP):串行线路IP
                                           PPP(Point-to-Point Protocol):点到点协议
                                           802.2等
物理层(Physical):                                                                             

                                                                                                                                      中继器(repeater) 集线器(hub)
         无                                                                                             (放大或再生弱的信号,在两个电缆段之间复制每一个比特)

 

 

应用层
        包括所有和应用程序协同工作,利用基础网络交换应用程序专用的数据的协议。如,


HTTP(Hypertext Transfer Protocol),超文本传输协议。                                          PORT   80

TELNET (Teletype over the Network, 网络电传) ,

通过一个终端(terminal)登陆到网络(运行在TCP协议上)                                             PORT 23


FTP (File Transfer Protocol, 文件传输协议) ,由名知义(运行在TCP协议上) 。 PORT 20/21

SMTP (Simple Mail Transfer Protocol,简单邮件传输协议) ,用来发送电子邮件(运行在TCP协议上) 。


DNS (Domain Name Service,域名服务) ,用于完成地址查找,邮件转发等工作(运行在TCP和UDP协议上) 。 PORT   53

 

SNMP (Simple Network Management Protocol, 简单网络管理协议) ,用于网络信息的收集和网络管理。

PORT 161

 


传输层
           

         该层提供端对端的通信。最重要的传输层协议是传输控制协议TCP。 传输控制协议TCP (Transport Control Protocol) - 数据流传输(面向连接,可靠) 用户数据报文协议UDP (User Datagram Protocol) - 数据报文传输(无连接不可靠)


网络层
         

           该层负责数据转发和路由。从该层上面往下看,可以认为底下存在的是一个不可靠无连接的端对端的数据通路。最核心的协议当然是IP协议。此外还有ICMP,RIP,OSPF,IS-IS,BGP,ARP,RARP等。
链路层

 

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