ARP:地址解析协议。用于通过ip地址查找对应的mac地址 当网络上一台机需要请求一个ip地址的时候,他会广播这个地址到链路上的所有机器。网络上的所有机器在收到之后都检查自己的地址。如果一样,那么就以自己的以太网地址作为回答。 在机器运行了ARP之后,会把结果缓存起来,以便之后的通信使用。(这一点有点类似于DNS) ...
ARP:地址解析协议。用于通过ip地址查找对应的mac地址 当网络上一台机需要请求一个ip地址的时候,他会广播这个地址到链路上的所有机器。网络上的所有机器在收到之后都检查自己的地址。如果一样,那么就以自己的以太网地址作为回答。 在机器运行了ARP之后,会把结果缓存起来,以便之后的通信使用。(这一点有点类似于DNS) ...
structpacket{bit_stringsource//起点bit_stringdestination//终点bit_stringend_protocol//上层协议bit_stringpayload//包};NETWORK_SEND(segment_buffer,destnation,network_protocol,end_layer_protocol){packetinstanceoutgoing_packetoutgoing_packet.payload←segment_bufferoutgoing_packet.end_protocol←end_protocoloutgoing...
Network Layer ARP/RARP Packet Format The ARP (Address Resolution Protocol) is used to resolve IP addresses into MAC addresses. The RARP (Reverse Address Resolution Protocol) is used to resolve MAC addresses into IP addresses. GRE Generic Routing Encapsulation (GRE) encapsulates the packets of certa...
Network > ARP ARP (Address Resolution Protocol) maps layer 3 (IP addresses) to layer 2 (physical or MAC addresses) to enable communications between hosts residing on the same subnet. ARP is a broadcast protocol that can create excessive amounts of network traffic on your network. To minimize...
ARP协议(Address Resolution Protocol,地址解析协议); RARP协议(Reverse Address Resolution Protocol,逆地址解析协议)。 4> 重要的设备:路由器。 4)传输层(Transport Layer) 第一个端到端,即主机到主机的层次。传输层负责将上层数据分段并提供端到端的、可靠的或不可靠的传输。此外,传输层还要处理端到端的差错控制...
struct packet{bit_string source//起点bit_string destination//终点bit_string end_protocol//上层协议bit_string payload//包};NETWORK_SEND(segment_buffer,destnation,network_protocol,end_layer_protocol){packet instance outgoing_packet outgoing_packet.payload ← segment_buffer ...
ARP (Address Resolution Protocol) The Address Resolution Protocol (ARP) is an Internet layer protocol that helps TCP/IP network components find other devices in the same broadcast domain. ARP uses a local broadcast (255.255.255.255) at layer 3 and FF:FF:FF:FF:FF:FF at layer 2 to discover...
Figure 1. Network layer of the TCP/IP Suite of Protocols This illustration shows the various layers of theTCP/IPSuite of Protocols. From the top, the application layer consists of the application. The transport layer containsUDPandTCP. The network layer contains the network (hardware) interface...
ICMP (Internet Control Message Protocol): 路由器向数据包源端发送 Destination Unreachable, Time Exceeded, Source Quench 等消息,可用于ping 和 traceroute 等工具。 ARP (Address Resolution Protocol): 发送方查询arp缓存无果,则以广播形式发出包含目标地址的请求;目标地址的主机将自己的以太网地址回应给发送方,...