Design And Research On Vocational And Technical College Campus Network System

This paper is firstly aimed to analyzing the status and development trend of network, to argue the necessity of building campus network for the vocational and technical colleges against the background of network rapid development, and then to elaborate its principles and requirements. On a whole, the campus network to be built can satisfy the demands over the next 5-8 years with high stability, high reliability, and high security and so on.Then, the paper is designed to make a systematic exposition on the whole planning of campus network including the specific use of network equipments, College VLAN, and IP address allocation, etc.Next, the paper is to expound the designs of the campus network in terms of its reliability and stability in details. Firstly, link aggregation technology can be used to promote link bandwidth. Secondly, MSTP+VRRP technology can be used to improve backbone network redundancy rate. As for data link layer, MSTP can be used to shunt VLAN data, making full use of link resources. As for network layer, VRRP can be used to redundant IP default gateway, setting backup gateway. Thirdly, all data in campus network can be divided into different groups for different business and QOS technology can be used to set bandwidth for each business data to ensure the transmission of important data as well as other data. Fourthly, according to the blocking up of wide area network' exit, the whole planning allows for double exits and uses F5 LB device to distribute the flow reasonably, giving full play to the role of dual-link.Finally, the paper is to expound the designs of the campus network in terms of its security. According to campus network server, the use of LINUX is put forward in this paper to make services and different access privilege can be set for different purposes. According to network equipments, six pieces of suggestion are then offered to effectively curb the attacks on various types of network equipments.