The Network Design Project Of The Digital Production Management Information System

The construction of the network's corresponding system is the foundation in the storage transportation & sales sub-company of Daqing Oilfield company. Also, it is the exchange road of the data's transmiting and communicating. The network's stability and efficiency is the key to the whole system's running, and affects whether the direct system is in time. The platform adopts mature and dependable technique, and assures the network's extending, integrity , manipuility and reliability.1 The design projectFor guarantee the movement that the whole network is stability and efficiently, the system chooses to use the Cisco industry's ethernet products, each oil area adopts the double fiber network structure.The core switch:With the 24 port 10/100/1000,it is an access to network, and provides the router and the function of QOS.Core firewalls:With 3 port,one is used for the office network, one is used for the switch of the database server clusters, the other is to connect the core switch. The industry net( production network namely) adopts 100M networks connect with the enterprise network, and a guarantees the various data flow with the QOS( the quantity service assurance) technique. Among the production network and the enterprise network, the firewalls is used to isolate, so the business enterprise net customers can only visit the particular industry network's resources. The firewalls can raise the safety of application system efficiently, the office network ,the production network and the database system are separated mutually in fact, thus avoiding the risks of the following: denial of service, information thief and damage data.Ring topology: it is the most actual and the most extensive local network's configuration in the industry application. After the break off the ring network, it can provide the fast resume function and the safety guarantees, so can insure the equipments to operate continuously. Using the RSTP( fast born tree calculate method, IEEE 802.1w),it provides the path redundancy and prevent the circulate of the networks, in normal ,it forces the backup data path for blocked state. If one path is breakdown, that topology will active the backup data path, reconfigarate and reconstruct. can reduce the time of resume as 1-2 s.2.VLANThe numeric production management system of sub-company includes numerous production units, each production units include the administrative dept. and produce section, so it involves the different management section, a lot of sections have the application of opposite independency. The network communication system adopts VLAN( the virtual local area network) technique to carry out the numeric production scheduling system ,decision-making system, video meeting system and produce monitoring system insolate mutually, thus realizing the safety of the network.3 The realization projectSub- company and each sub-production unit areas production unit connect with each other by the existing local area network., among them the scheduling center is the core of the whole network, and the oil area unit's scheduling center is the gather layer, the production frontline is the access layer.The production dynamic data and the history records are passed to the oil area unit's scheduling center, so the sub-company can gain the production datas from each oil area unit, and can provide the decision of basis for company leadership .The instructions of the sub- company can deliver to each oil area scheduleing center by the network ,then the oil area scheduleing center can send the frontline fastly, so raise the production efficiency.Because each unit has built up each own scheduleing center, they can monitor and command the actual production circumstance through their own scheduling system.Moreover, each oil area's safe production video information can show in the shcheduling system. also deliver to the sub-company cent through the network, so it can provide the objective video information of production at the spot.