Technique Of Next Generation INTERNET And Its Application In MAN-campus Network

With the expansion of network in campus, with increase of assignment burden, it become more and more important to make plenty use of network, to prevent key errand from congestion. At the same time , a lot of application in network and management of resource become more important. Among establishing campus network ,many technical characters of the next generation INTERNET should be used. High-performance campus network should guarantee basic facility maturity, support voice, video, data of key-errand harmony. The core technology in establishing high-performance campus network consist of technology in 1000M Ethernet network , the third-level exchanges , IPQoS and IPSEC, etc.To solve QoS problem, IETF propose integrated service model (IntServ) , difference divides the business model (DiffServ) , Muti-protocol marks stream( MPLS) , flow controlled project and restrained routing, etc. Each method offering QoS have their own strong points in IP based network . Combining them and Complementing each other can offer better end-to-end QoS.The IP is in the transition from IPv4 to IPv6 for the exhausting IP address. The transition will last for a long period. There are three main basic fundamental ways in transition: dual protocol stack, tunnel and NAT-PT. They have their own influence on IP QoS. TO understand the smooth transition from IPv4 to IPv6, to improve IPv6 protocol, to implement IPv6 network application widely , a IPv6 experiment network is necessary to be established.After gaining enough experience in experiential network , then spread it out . A scheme of small-scale experiential network which cost less is detailed. Ipv6 and IPQoS could be tested on the experiential network.