A Method of Constructing Local Area Network Using IP Protocol

Abstract

This invention relates to a method for utilizing IP protocol to set up LAN, in which, Ethernet protocol is eliminated in the network adapter to reduce the process time to network data of the host and realize a third layer switch to let the IP exchange have the route function, which applies the following technology: a LAN includes an IP network adapter, an IP exchange and a network access device, in which, the transmitted data in the network are pue IP data packets and the working way of the network is of packet exchange not the traditional packet broadcast of the LAN.

Description

1. Technical field: [0001] The invention relates to a method for establishing a computer local area network, TCP / IP technology and packet exchange communication technology, in particular to a method for establishing a local area network using the IP protocol. 2. Background technology: [0002] At present, the existing computer network technology can be divided into wide area network technology and local area network technology. LAN technology is mainly used for short-distance network interconnection. Commonly used LAN protocols include: IEEE802.3, IEEE802.4, and IEEE802.5, etc., among which the most widely used is the IEEE802.3 series protocol, which is commonly referred to as Ethernet. However, the Ethernet protocol only includes the lower two layers of the OSI model from the perspective of the protocol structure, that is, the physical layer and the data link layer. Its structure is as follows: Figure 1 to Figure 2 shown. [0003] see image 3 , in computer network appl...

AI Technical Summary

Problems solved by technology

[0003] see image 3 , in computer network applications, the network protocol that meets the needs of user applications is another protocol-TCP / IP protocol, so in the actual network, two different network protocols must be used to meet the needs of network users. see Figure 4 , which brings serious inconvenience to the establishment of the network and seriously affects the efficiency of the network

[0004] There are still security problems in the network established with the IEEE802.3 protocol, for example, in Figure 5 In the network shown, when host B communicates with host C, host B broadcasts data packets to the shared transmission medium bus, and data is transmitted along the bus to both ends; during data transmission on the bus, the host connected to the bus A, C and D can all receive the data, but other hosts discard the data after comparing the destination address in the data with their own address, and host C receives the data after comparison

The problem with this working method is that other hosts can change their working methods, set the network adapter to "noisy listening mode", and then receive all the data transmitted in the network, resulting in data transmission leaks in the network, resulting in network insecurity

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