Research On Construction Technology Of A Manageable CERNET Province Area Network(PAN)

The China Education and research Network(CERNET),Speaking in general referred to as "Education Network",is a public beneficial computer network of education and scientific research.Leadered by the Ministry of Education,CERNET was formed with national colleges' network,with Tsinghua University as the core and with the main university as the province's nodes.Jiangxi node is leadered by Jiangxi Provincial Educational Department,the network center is linked with Network Center of Nanchang University,Network Center of Nanchang University is responsible for construction,operation and maintenance work.Currently,there are more than 50 institutions access to education network covering the province's major institutions.Province Area Network(PAN),is an expansion of City Area Network,it is formed the province's network into a network similar to the LAN integration,to realizated of the province's integrated network management and operation.Under the leadership of the Jiangxi Provincial Educational Department,basing on Jiangxi CERNET,we use the appropriate network technology to effectively link the whole province's colleges network into a similar lan network to improve the timeliness of the operation of the network and resources Inclusion of.This is called "Education Province Area Network " in this paper.Although the PAN is the City Area Network's expansion,but it has a different technical requirements with City Area Network,which are mainly embodied in the choice of Internet technology.At the same time,we use the Internet technology, management must also meet the characteristics of convenience,because,as an integrated network,we can at any time request from the various points of the necessary data flow monitoring and management,for example,flows to the size, killed virus,and probably some special requirements of the functional departments of the provinces,must be specific to the single user.Of course,fee is also an important parameter.Comprehensive requirements,we selected according to different users of the DDN,SDH and VPN,and other Internet technology.This is an important content of this paper.However,the Education Provincial Area Network building in the true implementation of the process,the interconnection question is not only problem.The Bottleneck of bandwidth between CERNET and ChinaNet is greatly restricted to user of CERNET in speed.According to this characteristic,we ask to a same rapid speed to visit CERNET and ChinaNet,which is the double export issue.The first technology issue of the double export is the "more export strategy router technology".This paper elaborated on its exports to achieve multi-purpose, used by the router technology,mainly on the basis of the source address router configuration,in accordance with the allocation purposes address router,according to port configuration router,and so on.The another technology issue is:how to make user of CERNET and ChinaNet to visit the server,that is in PAN and need to be opened to the outside world,with same rapid speed? This paper focuses on IP mapping techniques and multiple IPs for single domain names' analytic techniques in multi-entrance environment.