The Deployment Of Telecom Operators IP MAN IPv6 Scheme

With the continuous development of Internet technology,the network needs more and more connections,the demand for IP address is becoming more and more big.And operators in China have IPv4 addresses are not enough to meet the needs of the business,so the operators according to own actual situation,put forward the network upgrade step,adjust measures to local conditions to deploy transition technology solution to address the shortage problem,satisfy the user and the sustainable development of the business,gradually realize the smooth evolution of the overall development of the network is proposed.This paper describes the current industry mainly adopts three IPv6 transition technology,including the principle of various transition technology,metropolitan area network modification plan and process online.The retrofit scheme of metropolitan area network mainly puts forward the upgrading transformation of network elements at all levels and routing deployment;Through the description of the process of Internet,more clearly reflect the users of the end-to-end process of dial to Internet access,can draw inconsistencies in each stage,in order to provide reference for later in the actual deployment and troubleshooting.Then emphatically introduced the main IP IPv6 deployment involved and IT support system,based on the main IP/IT system has carried on the analysis of the situation described,and then proposed the concrete reform scheme combining with the demand and measures;Upon completion of the network and support the system after modification,the whole process after illustrates,the above mentioned reconstruction of networks and support systems together,from the user's account,authentication,address assignment and traceability of the whole process analysis,key to IPv4 inconsistencies are described,and help readers a comprehensive understanding of plan implementation effect.Finally is combined with actual project deployment,centralized backup solution of CGN equipment are discussed in this paper;Mainly displays in the current distributed deployment scenarios,operators of safety and reliability requirements,each BRAS are 1 + 1/1:1 model is adopted to improve the local redundancy backup,caused a lot of waste of resources,increased the cost of investment,in order to solve this problem,by CR layer hang a centralized backup device,the BRAS equipment on-demand configuration CGN boards,when malfunction CGN interface card,automatic will flow switch to the centralized equipment,at the same time solve the problem of backup and investment.Now operators are simple using NAT technology,to delay the IPv4 address consumption rate,the simple way can maintain the normal operation of the business,although a short period of time but still can not fundamentally solve the IPv4 addresses run out problems,therefore based on metropolitan area network end-to-end IPv6 modification research in the future is very important to comprehensively promote the construction of the next generation Internet and application,for operators of construction plays an important role.