Fragment offset: 0 分段偏移量(将一个IP包分段后传输时,本段的标识) Time to live: 128 生存期TTL Protocol: TCP (0x06) 此包内封装的上层协议为TCP Header checksum: 0xe4ce [correct] 头部数据的校验和 Source: 202.203.44.225 (202.203.44.225) 源IP地址
[Protocols in frame: eth:ethertype:ip:tcp:telnet] [Coloring Rule Name: TCP] [Coloring Rule String: tcp] Ethernet II, Src: 18:c5:8a:17:b6:b3 (18:c5:8a:17:b6:b3), Dst: 90:e2:ba:96:08:07 (90:e2:ba:96:08:07) Destination: 90:e2:ba:96:08:07 (90:e2:ba:96:08:07) ...
IP协议是TCP/IP协议的核心,所有TCP,UDP,ICMP,IGMP的数据都是以IP数据报格式传输。注意:IP是不可靠的协议,也就是说IP协议没有提供一种数据未传达以后的处理机制而认为是上层协议TCP,UDP要做的事(即出现了TCP是一个可靠地协议而UDP没有那么可靠的区别)。 图10185--- TTL字段规定该数据包在穿过多少个路由之后才...
Chapter 2 Protocols and TCP/IPpoint to point internetworking
TCP/IP协议族(TCP/IP Protocol Suite,或TCP/IP Protocols),简称TCP/IP。由于在网络通讯协议普遍采用分层的结构,当多个层次的协议共同工作时,类似计算机科学中的堆栈,因此又被称为TCP/IP协议栈(英语:TCP/IP Protocol Stack) 。这些协议最早发源于美国国防部(缩写为DoD)的ARPA网项目,因此也被称作DoD模型(DoD Model...
TCP/IP is a family of communication protocols used to connect computer systems in a network. It is named after two of the protocols in the family: Transmission Control Protocol (TCP) and Internet Protocol (IP). Hypertext Transfer Protocol (HTTP) is a mem
and apacketis the unit of data passed between the IP layer and the link layer. A packet can be a complete IP datagram or a fragment of an IP datagram. an IP datagram = packet + packet + packet + ... + packet 传输层(Transport Layer):提供可靠的数据传输服务,它检测路由器丢弃的包,然后...
所以TCP/IP协议栈的心跳机制也能检测出网络异常,不过在默认配置下可能需要很久才能检测出来,除非网络异常出现在正在发送心跳包后等待对端的回应时,这种情况下如果多次重发心跳包都收不到ACK回应,协议栈就会判断网络出故障,主动将连接关闭掉。 2.3、修改TCP/IP协议栈的默认心跳参数 ...
2.2 Ethernet and IEEE 802 Encapsulation / 以太网和IEEE 802封装21 2.3 Trailer Encapsulation / 尾部封装 23 2.4 SLIP: Serial Line IP / SLIP:串行线路IP 24 2.5 Compressed SLIP / 压缩的SLIP 25 2.6 PPP: Point-to-Point Protocol / PPP:点对点协议 26 2.7 Loopback Interface / 环回接口 28 2.8 MTU...
The TCP and IP protocols work in tandem to send data from onehostto another. First, each host (as well as every other network-connected device) is assigned a uniqueIP address. TCP establishes a connection between the hosts using their IP addresses, then breaks data intopacketsand sends them...