Vpn Network Scheme Of The Beijing Welfare Lottery Centre

Beijing Welfare Lottery Centre achieved good results for selling lottery online since 2000.The achievement is increasing every year. As e-lottery technology continues developing, the new sales system needs a new net to operate. The new communications network needs to support Ethernet interface, dual-core backup, support multicast, low tariffs and other requirements. As Beijing Netcom existing communications network and products can not fully meet customer requirements. During the period of network design, we need to take full advantage of Beijing Netcom's existing resources, use the appropriate network technology and integrate related communications products to create an efficient and reliable network for Beijing Welfare Lottery Centre.We conducted a detailed analysis of communication requirements for Beijing Welfare Lottery Centre. Considering its business characteristics and discussing with many departments, we created IP-based public network and set up VPN based on IPSec technology. The network is star structure with dual-core network architecture whose operation is based on the usage of the public IP network. Sales outlets to use ADSL access, the core point of transmission-based MSTP network access technology, to take DMVPN technology, to form Welfare Lottery Centre VPN special network. DMVPN is through multi-point GRE (mGRE) and Next Hop Resolution Protocol (NHRP) combined with the implementation of IPSec. In DMVPN solution, the use of IPSec encryption to achieve, the use of GRE or point GRE (mGRE) to establish the tunnel, the use of NHRP to resolve the branch node dynamic address problems. DMVPN only requires the central node must apply for a static public IP address, the branch point can be dynamic address access.Network testing made sure the feasibility of networking schemes. After a careful plan of network creating, we started to create the new network. Finally, the new communication network was delivered to customer in early 2007. Through a period of network operation, Beijing Netcom optimized the network and made the network more reasonable and secure. The entire project was completed in the middle of 2009 which fully achieved the expected results.