BGP data center Overview

Editor's note: I remember that at this time last year, many netizens also wrote to ask what is the difference between dual-line Dual IP address and dual-line Single IP address, however, with the media stream of IDC owners headed by the itworld IDC channel, most domestic users and webmasters have a clear understanding of Dual-line and related North-South communication technologies, now I have received a letter from some netizens, asking which BGP data centers are real or asking us to recommend several BGP dual-line data centers with better speeds, we can see that we still have some knowledge about the benefits of Dual-line Single IP addresses and the advantages of BGP data centers. This also makes us feel that our work is indeed valuable, it can actively promote the popularization of new technologies and new products in the IDC industry. This is actually the biggest wish of a media worker.

Although the appearance of BGP data centers is not very long, the development of such data centers is very fast. In the early stage, there were fewer IDC service providers using such solutions in China. Although there were some data centers using BGP technology, however, most of them provide services for special customers, with few data centers targeting common users and IDC vendors. Most of the later BGP data centers have services for the common civil market; because the BGP data center can be used not only for dual-line Single IP addresses, but also easily extended to single IP address and multiple lines, it is the best way to solve the problem of multi-carrier line communication and is more suitable for the current domestic market demand.

At the same time, because China Telecom and China Netcom do not access each other, BGP technology is applied to many third-party operators, such as mobile and Unicom data centers that use BGP.

BGP (Border Gateway Protocol) is mainly used for interconnection between autonomous systems (AS) on the Internet. The main function of BGP is to control route propagation and select the best route. China Netcom, China Telecom, China tietong, and some large private IDC operators all have as numbers. Most of the major network operators in China use BGP protocol to achieve multi-line interconnection with their own as numbers. This solution is used to achieve multi-line interconnection. IDC needs to be in the CNNIC (China Internet Information Center) or APNIC (Asia Pacific Network Information Center) apply for your own IP address segment and as number (currently, chinanetcenter is also a member organization of APNIC and CNNIC), and then broadcast the IP address segment to the networks of other network operators through the BGP protocol. After the BGP protocol is used for interconnection, all backbone router devices of the network operator determine the optimal route to the IP segment of the IDC to ensure high-speed access for users of different network operators.

Advantages of BGP Data Center:

1. You only need to set one IP address for the server. The optimal access route is determined by the backbone router on the network based on the number of Route hops and other technical indicators, and does not occupy any system resources of the server. You can select the optimal route for both the upstream and downstream routes of the server, so that you can achieve high-speed Single-IP high-speed access.

2. because the BGP protocol is redundant backup and loop elimination, when the IDC service provider has multiple BGP Interconnection Lines, routes can be backed up to each other, when a line fails, the route is automatically switched to another line.

3. The BGP protocol can also enable strong network scalability to interconnect the IDC network with other carriers, easily achieving single IP address and multiple lines, so that users of all Internet operators can access the network quickly. This is incomparable to dual-IP dual-line.

BGP data center requirements:

Although the BGP data center has many advantages, it is difficult to build a BGP data center. Apart from technical issues, it is more about the policy.

First, most of the self-built IDCs of China Telecom and China Netcom are not BGP. Due to commercial factors, the telecom IDCs are unlikely to pull a fiber optic cable from China Netcom. The exception is that the IDCs are divided into several phases, one phase is jointly established by China Telecom and other non-isp idc operators, so that the co-built IDC can be pulled into the China Netcom line.

However, the above situation is quite special. Most of the dual-line data centers are self-built data centers of IDC operators. They can be connected to both the Telecom and China Netcom cables and BGP data centers, self-built data centers have great flexibility in line access and are not subject to too many ISP restrictions.

In addition, the BGP data center requires the operator to have its own as domain. Of course, it is not very difficult to apply for an as number with CNNIC. For detailed requirements and procedures, see the instructions on CNNIC, I will not repeat it here. However, a local organization is required to coordinate the broadcasting between different ISPs, because each ISP on the Internet has at least one unique as number, in addition, through BGP, it broadcasts its network information to its peer-to-peer interconnection partners. Without such a coordinated organization, China Netcom will not broadcast BGP for China Telecom on its own network. In Shanghai, there is such a specialized agency in Beijing, where the Communications Bureau assumes this role. In Guangdong, there is no way to solve this problem.