Application of dual-network dual-IP for dual-line sharing

Let you achieve: access to the telecommunications server to automatically use telecommunications lines, and access to the Netcom server automatically use the Netcom line. Internet friends are basically clear, the North Netcom and southern Telecom Internet communication bottlenecks, and not to say what is the cause of the specific, but this does give the application of the Internet has caused a great obstacle. Therefore, from the server and IDC operating point of view, there are many dual-line room, through the deployment of telecommunications, Netcom dual lines, to meet the users of the actual use of dual-line requirements.

In general, there are dual-IP dual-line, single IP dual-line, CDN dual-line, BGP single IP dual line such as several dual-line access solutions.

A Brief introduction:

1, dual IP dual-line. Server configuration of 2 network cards, respectively, the configuration of telecommunications, Netcom different IP addresses. Configure the routing table on the server, realize the server to visit the different IP of telecom and Netcom, take different channel respectively. The other side, the user through the unique domain name to access the server, and the domain name resolution, through the implementation of different IP address requests to return the different server IP method to achieve, Netcom users to request domain names to return to Netcom's IP, telecommunications users to request domain name return to the telecommunications IP, this is the so-called intelligent DNS resolution.

2, single IP dual circuit. Server Configuration 1 network card 1 IP, or telecom IP, or Netcom's IP. By configuring the routing table on the router to achieve dual-line access, the advantage is that the server does not have to be configured, but the disadvantage is that such a configuration, in fact, only to solve half of the traffic on the two-line access, not to the user when accessing the server to provide the correct route channel. So such a scheme is generally only a transitional programme.

3, CDN Dual line. Remember when I joined a CDN alliance. Oh. CDN (Content Delivery Network) is the Internet distribution network, the basic concept is to create a large number of site mirroring, such as Beijing has a server, this time in Nanjing to put a mirror server, Guangzhou also put a mirror server, Then through intelligent DNS resolution to Beijing's users to visit the server in Beijing, Nanjing users visit the server cache in Nanjing, and so on. Looks like Sina and so on the large-scale portal site is doing so. The advantages of CDN is easy to deploy, scalability is strong, the disadvantage is that the image of the cache technology for static pages of Web sites, such as portal support is very high, but for dynamic updates based on the site, the basic is useless.

4, BGP single IP dual circuit. BGP (Border Gateway Protocol) Boundary Gateway protocol. BGP's specific function is to control the transmission of routes and select the best route. This two-line implementation must be IDC room operators and telecommunications, Netcom can reach a cooperative agreement, through the backbone of the network router to give the best route choice, all of the server and users have no burden. The server only needs single IP and has the best effect. But how could such a co-operative negotiation be so easy? So at present this kind of BGP based solution is basically for the absolute high-end user to provide.

above to introduce you to the issue of dual-circuit, then today specifically want to talk about what is it.

In fact, is another important network application of dual-line networking. That is, two-line access for the client community. In the actual use, there are many cases, companies, internet cafes or individuals at home, often because of the application of telecommunications network line, will lead to a slow access to Netcom, and the application of Netcom, then access to telecommunications will be very slow. Simply apply for two lines, a telecommunications broadband, a netcom broadband bar. And I don't know how to pick them up. In fact, in such an application, dual-IP two-way network can be realized by dual-line automatic recognition.

Here's how to do that. Take My computer as an example to give you a demo.

I use 2 broadband, a telecommunication line, a netcom line, the bandwidth is 1M respectively.

What about me? There are two network cards, a wired network card connected to Netcom, a wireless network card connected to the telecommunications line.

Connect Netcom's network card, IP set to: 192.168.1.111, Gateway set to 192.168.1.1

Connect Telecom's network card, IP set to: 192.168.0.111, Gateway set to 192.168.0.1

above to introduce you to the issue of dual-circuit, then today specifically want to talk about what is it.

In fact, is another important network application of dual-line networking. That is, two-line access for the client community. In the actual use, there are many cases, companies, internet cafes or individuals at home, often because of the application of telecommunications network line, will lead to a slow access to Netcom, and the application of Netcom, then access to telecommunications will be very slow. Simply apply for two lines, a telecommunications broadband, a netcom broadband bar. And I don't know how to pick them up. In fact, in such an application, dual-IP two-way network can be realized by dual-line automatic recognition.

Here's how to do that. Take My computer as an example to give you a demo.

I use 2 broadband, a telecommunication line, a netcom line, the bandwidth is 1M respectively.

What about me? There are two network cards, a wired network card connected to Netcom, a wireless network card connected to the telecommunications line.

Connect Netcom's network card, IP set to: 192.168.1.111, Gateway set to 192.168.1.1

Connect Telecom's network card, IP set to: 192.168.0.111, Gateway set to 192.168.0.1