Statistics show that in China, 90% of websites choose virtual hosting as the website space. Therefore, choosing a good web hosting provider is the key to ensuring speed and stability. From the current development and development of domestic IDC, solving the stability and speed of virtual hosting has become the focus of competition among service providers. Due to our special reasons, after the separation of North and South Telecom, the southern market is mainly telecommunications, and the northern market is mainly Netcom. When the two sides visit each other, there will be a bottleneck. The speed is very slow, that is, the North-South interconnection that we usually say. Interoperability issues. Two effective solutions at present are the intelligent multi-line room and mirror acceleration engine. The intelligent multi-line computer room can effectively solve the bottleneck of mutual visits between North and South. The principle is to intelligently identify whether the Internet user is Telecom or Netcom, and then process it. The telecom Internet will return the telecom IP address. Netcom will return the Netcom IP address automatically. Get the fastest path to achieve North-South connectivity. Today I mainly talk about what is a two-line server and the principle of a two-line server. Dual-line equipment room uses Gigabit fiber direct connection, telecommunication network communication dual-line access, telecommunication network communication dual-line automatic switching full routing BGP\\IP strategy technology The advantage of using dual-line access is to simultaneously access Telecom and China Netcom in one space. The line adopts special technology to realize automatic judgment according to the visitor's line, and automatically switch to obtain a faster speed to open the website. The two-line access technology is currently the best way to solve the slow mutual access between telecommunication and network communication BGP (boundary Gateway Protocol) is mainly used for interconnection between Internet ASs (autonomous systems). The main function of BGP is to control the propagation of routes and select the best route. China Netcom, China Telecom, China Railcom and some large private IDC operators all have AS numbers. Most of the major network operators in the country use the BGP protocol to achieve multi-line interconnection with their own AS number. To use this solution to achieve multi-line interconnection, IDC needs to apply for its own IP address segment and AS number in CNNIC (China Internet Information Center) or APNIC (Asia-Pacific Network Information Center) (currently NetScience is also a member of APNIC and CNNIC) Then, the IP address of this segment is broadcasted to the network of other network operators through the BGP protocol. After the BGP protocol is interconnected, all the backbone routing devices of the network operator will determine the best route of the IP segment of the IDC room to ensure high-speed access for users of different network operators. Two-line servers have two types of broadband access, such as one line for telecommunications, and then one line for Netcom. A typical server is a single-line server that can only be accessed by a class of broadband users. The two-line server effectively solves the problem of non-interoperability between China's North and South networks, and allows telecom broadband users and Netcom broadband users to access quickly. The evolution of two-line server technology The dual-line server dual-line access technology (referred to as dual-line technology) is in an Internet data center (IDC), through special technical means. Connect different network access provider (ISP) services to a server or a server cluster to enable the network service access users to connect to the same ISP or faster ISPs. Access to resolve or mitigate slow latency (network bottlenecks) across ISP users. Hardware investment comparison: Dual server hardware investment is big, two servers believe that everyone knows that it will be more expensive than a server? Double server hosting costs are high, who knows the dual-line dual-line, will be higher than the hosting cost of a two-line! Update maintenance comparison: dual server, maintenance update trouble, update this machine, but also update that station, just updated the Netcom side, but also to update the telecommunications side, the two sides of the data synchronization is difficult to achieve . . . . With dual-line technology, you can always make the server's data update on both sides, saving you manpower and valuable time to do more things that are good for your development. I hope that the services and information provided by my website can be used by the industry that visitors can quickly access, such as portal websites, large and medium-sized enterprise websites, information portals, mall websites, personal websites, game industries, etc. Due to the interconnection and intercommunication between the two major networks (Telecom and China Netcom), it is very slow for telecom users to access the Netcom website or Netcom users to access the telecommunications website. In order to solve this problem, there are various schemes A to make telecommunications stations for the website/Netcom station image: This is actually the user renting a server in Telecom and Netcom respectively. The two servers have the same data. This is costly and maintenance is very inconvenient. Data cannot be kept in real time. B CDN (Website Acceleration): This The solution is to have a server in the telecom /Netcom cache user site data. Can have a certain role. But only valid for static pages, invalid for dynamic pages. C two-line host. Two-line hosting is actually a computer room with telecommunications /Netcom Two lines are connected. Through the internal router settings of the equipment room. Telecom line. Netcom users access Netcom lines. This way, Telecom Netcom can access quickly. D Intelligent two-line host: Smart two-line host is further optimized on two-line service. The best effect in dual-line hosting is dual IP. Hosting method. That is, one server simultaneously allocates one IP address of Telecom and Netcom. Then let the telecom user access the telecom IP address. Netcom users access the IP address of Netcom. This double line works best. The ordinary double line is built on the website page. "Telecom station" "Netcom station" two connections. But customers rarely visit this website when they visit the website. Or the customer has no patience to visit your website (opens very slowly). This will lead to yours. The customer lost: The fake double line is to take a rail or mobile line to lie to the customer that the two-line telecommunications network communication is interoperable. In fact, the rail connection is the same as that of China Unicom. Intelligent dual line: It is a unique LDN intelligent resolution service, which can be intelligently judged based on the user's 2 IP addresses. Telecom users automatically access the telecom IP. Netcom lines access Netcom IP, so that the country can quickly access. Only the two-line host with LDN intelligent resolution is the best effect host. The intelligent two-line solution has the following advantages: The server is equipped with two IP addresses. The optimal access route is determined by the backbone routers on the network according to the number of route hops and other technical indicators, and does not occupy any system resources of the server. Both the upstream and downstream routes of the server can select the optimal path, so that high-speed two-line access can be realized. Although the intelligent two-line solution is the best solution, because this solution requires the equipment investment and bandwidth investment of the IDC provider to be large and technically complex, the current domestic adoption of this solution is limited to the strong professional IDC service provider. .