Main steps in network implementation

Network implementation is the purchase, installation, debugging and system switching of equipment based on network design. It mainly includes the following steps:
(1) Project implementation plan. Before installing network equipment, a project implementation plan needs to be prepared to list the projects to be implemented, costs and persons in charge, so as to control investment and complete implementation tasks according to schedule requirements. The engineering plan must include the handling of specific matters such as equipment acceptance, personnel training, system testing, and network operation and maintenance during the network implementation phase. All foreseeable events must be controlled and handled, and the enthusiasm of relevant personnel must be mobilized.
(2) Arrival acceptance of network equipment. After the network equipment used in the system arrives, strict functional and performance testing must be carried out before installation and debugging to ensure that the purchased products can well meet user needs. During the arrival acceptance process, records must be kept, including verification of specifications, quantity and quality, and checking whether the certificate of conformity, factory certificate, supplier guarantee and various supporting documents are complete. Use test tools for evaluation and testing when necessary to evaluate whether the equipment can meet the needs of network construction. If shortage or damage is found, ask the equipment provider to reissue or replace it free of charge.
(3) Equipment installation. The installation and debugging of network systems require specialized technical personnel. The installation project is generally divided into several parts such as integrated wiring system, computer room engineering, network equipment, servers, system software and application software. Different parts should be installed and debugged by specialized engineers respectively. In these installation projects, special attention must be paid to the quality of the integrated wiring system, because integrated wiring generally involves hidden projects. Once a fault occurs after coverage, the cost of finding the source of the error and recovering the fault is relatively high.
(4) System test. After the system is installed, system testing is required. System testing is the basis for ensuring safe and reliable operation of the network. Network testing includes three levels: network equipment testing, network system testing and network application testing. Network equipment testing is mainly aimed at testing transmission media and equipment such as switches, routers, firewalls and cables. Network system testing is mainly aimed at system connectivity, link transmission rate, throughput rate, transmission delay and packet loss rate, link The network application test mainly tests the performance of services such as DHCP, DNS, Web, Email and FTP.
(5) System trial operation. After the system debugging is completed, it enters the trial operation stage. This stage is an important stage to verify whether the system reaches the expected goals in terms of function and performance. It is also an important moment to continuously adjust the system until it meets user requirements.
(6) User training. A large-scale and complex network system often requires network administrators to maintain and coordinate the use of network resources. The training of relevant personnel is an important part of network construction and one of the important factors to ensure the normal operation of the system.
(7) System conversion. After a period of trial operation, when the system reaches a stable and reliable level, the system conversion can be carried out. Three methods can be used for system conversion, namely direct conversion, parallel conversion and segmented conversion. The reliability and cost of these three methods vary and should be determined on a case-by-case basis.