In today's period of rapid development of information network, the development of computer communication network technology is directly related to people's life and work style, and also affects China's economic development. At present, the construction level of computer communication network system in China is still low, especially the design of computer communication network reliability, which hinders the overall development of computer communication network technology. This requires increasing the research on the reliability of computer communication network and improving the reliability of computer communication network. Based on the reliability theory, this paper discusses the optimal design technology of computer communication network from the following aspects.

First, the reliability theory of computer communication network.

The reliability of computer communication network is the basis of information network system security, which reflects the probability and ability of computer network system to complete the specified functions within a certain time and scope. The reliability theory of computer communication network includes two aspects, namely, the reliability and reliability of computer communication network. Reliability is the ability of computer communication network to maintain connectivity and meet communication requirements, and it is also an important parameter in the design and operation of computer communication network. Reliability refers to the probability that a computer communication network can complete a certain function under certain conditions, which can be divided into three types: two-terminal reliability, λ-terminal reliability and full-terminal reliability. The reliability of computer communication system mainly includes the ability of computer network security to resist external attacks, the survival ability of computer network security and the effectiveness and stability of computer working in various environments. Therefore, when maintaining computer-related network communication equipment, we should consider the influence of all parties to ensure that the user network can provide an effective use chain during maintenance and ensure that the computer runs under safe conditions.

Second, the factors that affect the reliability of computer network communication.

1, the influence of network security management on network reliability.

The design of computer communication network is different from the design method of general network products and equipment, and has the characteristics of large design scale and strong complexity. Therefore, for the reliability of computer network, it is necessary to avoid computer failure and loss of communication information in the design, ensure the integrity of network data as much as possible, and ensure that the computer network has sufficient reliability. In the design, advanced computer network information management means should be adopted to analyze the network operation parameters, so as to keep the computer communication network in good condition and avoid the occurrence of security risks.

2. The influence of transmission switching equipment on network reliability.

In the process of computer communication network construction, we should carefully consider the details of the scheme to avoid mistakes, and consider the fault tolerance of the communication network and the needs of future economic development. Therefore, when installing the lines, we should adopt the form of double lines and arrange the lines reasonably to avoid huge losses when there are problems in the computer network. For network integrators, all computer users' terminals need to be centralized. By splitting and concentrating lines, computer communication equipment and other equipment can be connected to the network for processing, which constitutes the first line of defense for computer network information. However, because the computer network integrator is a single point of failure, if some kind of failure occurs, the users connected to it will not be able to be present. Therefore, network integrators are very important to network security.

3. The influence of user equipment on network reliability.

When a computer user uses a computer, the user's settings on the terminal affect all user-oriented program equipment, which fully embodies the safety and reliability of the overall network communication of computer communication equipment, ensures the good use state of the computer, and also ensures the high efficiency of the computer in the later maintenance of the terminal.

4. The influence of network topology on network reliability.

In the process of computer network planning and design, network topology plays a very key role in computer network communication. Network topology has different functions and functions in different links and fields, which has a very prominent impact on computing network reliability. When network communication was just established, its development was limited because of its inherent effectiveness and fault tolerance. However, the appearance of network topology provides a theoretical basis and solution for the reliability of computer network communication, which is of great significance.

Three, computer network communication reliability design principles.

1. Formulate reasonable regulations on network communication management.

On the premise of ensuring the rationality of the design, the corresponding network communication management regulations are formulated to strengthen the network maintenance of network maintenance personnel and provide a good operating environment. Maintenance personnel should also maintain certain working ability and professional quality to provide technical support for network communication system.

2. The design conforms to the relevant national regulations.

When designing computer network communication, we should strictly follow the relevant national regulations and standards, adopt an open design structure, support the connection of heterogeneous devices and systems, strengthen the extended functions of computers, and ensure the advancement, practicability and stability of computers.

3. The design shall ensure interconnection capability.

The computer network communication system can support more network communication protocols after ensuring the interconnection ability, so as to ensure that the computer has sufficient security and stability in use, improve the fault-tolerant ability of the computer, improve the network speed of the computer backbone network, and enhance the response speed of the whole network.

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