E-Tax Network System Design Based on IP

The paper analyzes the basic needs about E-tax network system, On this basis, discussed the tax LAN technical requirements in the network system from the network capacity and load-bearing capacity, reliability and high availability, QOS, scalability, network interconnection, communication protocols, comprehensive introduced HSRP (Hot Standby Routing Protocol) technology, proposed E-tax network system three-layer solutions on expansion of the switch network in the central switch room of city´ tax bureau, as well as the network structure and network construction the way of network expansion and improvement of grass-roots units, raised network node design to the city, county and grass-roots units, and applies to the actual e-tax design of network systems.