https://networkengineering.stackexchange.com/questions/5064/on-which-layer-of-the-osi-model-does-the-arp-protocol-belong 这里有句话很好:OSI只是一个模型,没有任何一个协议是完全属于哪一层的。 我们看帧结构,ARP数据直接包含在Ethernet_II中,我个人认为它可以归纳于二层。 网络设备通过ARP报文来发现目的MAC...
ARP协议（Address Resolution Protocol，地址解析协议）在车载以太网中的作用与传统以太网中作用相同，是一...
TTL字段和ICMP协议密切相关,TTL字段用于控制数据包在网络中的生存时间,而ICMP协议用于处理生存时间超时等情况,并提供网络诊断和故障排除功能。 ICMP全称为Internet Control Message Protocol(互联网控制消息协议),是TCP/IP协议族中的一个重要协议。ICMP主要用于在IP网络中传递控制信息和错误报告,以及提供网络诊断和故障排除...
pass the local network. Also it is referenced in the OSI model as a link layer protocol.
printf(" Source IP:%s\n",inet_ntoa(ip_protocol->ip_souce_address)); printf(" Destination IP:%s\n",inet_ntoa(ip_protocol->ip_destination_address)); switch(ip_protocol->ip_protocol) { case 6: //printf(" The Trans Layer Protocol is TCP\n"); ...
这个过程本身被称为“L3地址的解析”，该过程通过邻居协议完成。而ARP协议是目前最常用的邻居协议。当IP...
ARP (Address Resolution Protocol) is the protocol that bridges Layer 2 and Layer 3 of theOSI model, which in the typical TCP/IP stack is effectively gluing together the Ethernet and Internet Protocol layers. This critical function allows for the discovery of a devices’ MAC (media access contr...
维护或查看系统arp缓存,该命令已废弃,使用ip neigh代替。 arp为地址解析协议,将给定的ipv4地址在网络中查找其对应的MAC地址。 一般会使用arp协议获取局域网内的主机MAC,所以局域网主机之间也互称为网络邻居。 arp命令 arp命令语法: arp -n -v -i # 查看arp缓存 ...
Intermediate devices - switches do switching based on destination MAC of ethernet header.All end hosts within broadcast domain (=vlan) get this arp request.All devices look destination MAC which is broadcast,so they must look upper layer protocol,that is ARP.
Why bother implementing a network layer protocol in user space? The short answer is “configuration control.” RARP uses the /etc/ethers file or the ethers NIS map to correlate MAC addresses to IP addresses; this is maintained by you, our gentle reader, in the same manner that IP address...