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System for revealing ARP working process

A technology of working process and ARP request, applied in the field of presentation system, which can solve the problems of no literature introduction and invisible working process.

Inactive Publication Date: 2007-12-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, generally this mapping process is automatically completed by the system kernel and is completely transparent to the user, which makes its working process invisible
How to demonstrate the working process of the ARP protocol through experiments, there is no literature introduction

Method used

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  • System for revealing ARP working process
  • System for revealing ARP working process
  • System for revealing ARP working process

Examples

Experimental program
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specific Embodiment approach 1

[0009] Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 1 to FIG. 4 . In this embodiment, a master node 1, No. 1 slave node 2, No. 2 slave node 3, and No. 3 slave node 4 jointly form an Ethernet network. The above four nodes all include the following hardware devices: microprocessor A, keyboard B, Ethernet Network controller C, Ethernet interface unit D, cache memory E and display unit F; where

[0010] Master node 1: The operator is used to set the Ethernet physical address and IP address of the master node 1, write the ARP request message, and the master node 1 automatically encapsulates the ARP request message constructed by the operator into a broadcast type Ethernet data frame , write the message into the sending buffer in the Ethernet controller C of the master node 1 through the data bus, and send the message to the network in the form of broadcast through the Ethernet interface unit D of the master node 1;

[00...

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Abstract

The system comprises: an Ethernet composed of a master node, a first slave node, a second slave node and a third slave node. The operator sets the Ethernet physical address and IP address for the master node, and writes the ARP request message, and sends the message to the network using broadcast way; the operator sets the Ethernet physical address and IP address for the first slave node, second slave node and third slave node, and decides if the ARP request message received from Ethernet requests its own physical address, and only keeps the ARP request message requesting its own physical address, and returns relevant confirmation; the master node extracts the physical addresses of first slave node, second slave node and third slave node from the returned ARP request message, and renews the buffer memory in the master node, and displays the content in the buffer memory.

Description

technical field [0001] The invention relates to a presentation system of an address resolution protocol working process. Background technique [0002] Currently, the Ethernet technology using the TCP / IP protocol stack is being increasingly used in industrial sites. In the actual work process, it is necessary to provide a dynamic mapping between the 32-bit IP address and the hardware physical address using different network technologies, so that the communication can be carried out smoothly. The function of the ARP protocol is to realize the conversion between the IP address and the Ethernet physical address, that is, to query the physical address of the target device through the IP address of the target device. Mastering the working process of the ARP protocol is the basis for mastering the Ethernet (including the TCP / IP protocol stack) to realize its communication working process. In particular, the industrial control network using Ethernet (including the TCP protocol sta...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L1/00H04L12/56H04L29/12
Inventor 佟为明刘勇林景波裴斐赵晶
Owner HARBIN INST OF TECH
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