Dynamic BGP line and static BGP line Is there any essential difference? The main function of BGP protocol is to control the propagation of routes and optimize the path selection. China Telecom, China Unicom, China Mobile, and some large third-party IDC service providers all have AS numbers issued by China Internet Information Center. Some high-quality proprietary networks of major domestic network operators mostly use BGP protocol to broadcast IP to each other, so as to realize multi line interconnection between autonomous regions.
At present, operators and third-party IDC service providers generally use the BGP protocol to realize the interconnection between AS, which is the primary way to solve the problem of north-south interconnection in China.
But in recent years, when users choose The server When hosting or renting servers, we often see the slogan of BGP dual line access. But in actual use, the user does not feel that it belongs to the real BGP The low latency and cross network access experience of the network, then, is this so-called BGP double line really a BGP line? Today, let Micronet take you to understand.
In fact, the so-called BGP dual line access mode for small and medium-sized data centers is a dual IP dual line access mode, that is, a Unicom or telecom IP is established on the server, and the routing equipment is used to determine whether data packets are sent through the telecom network or the Unicom network. This scheme improves the cross network access speed of Unicom users and telecom users to a certain extent, and solves the problem that single IP two-wire access requires the server to set a route. However, because of the use of Unicom or telecom IP addresses, when users send request packets, the server will not automatically determine the best route. Therefore, this solution is only a compromise solution in the transitional form, namely the so-called static BGP line. That is, when the network structure in the static BGP changes, the operator cannot automatically adjust the network settings at the first time to ensure the user experience. At the same time, dynamic BGP can automatically optimize the network structure at the first time according to the set routing protocol to ensure the stability and effectiveness of the network used by users. Therefore, the dynamic BGP network is really called BGP.
Essential difference between bgp line and ordinary line
The traditional definition of an autonomous system is a set of routers, which are controlled by a management organization and use IGP and common measurement values to forward information to other autonomous systems. The term "autonomous system" is used in BGP to emphasize the management of an autonomous system. For other autonomous systems, it provides a unified internal path selection scheme and a consistent description of the network reachable through this scheme. As an alternative to EGP, BGP protocol is an external gateway protocol for communication between routers in different autonomous systems. Exchange network information between BGP systems. In the autonomous system AS, this information includes all the paths that data must pass through to reach these networks. Use this information to build the chain diagram of the autonomous system. Then, according to the global BGP routing table, avoid the ring and select the best path.
Since BGP protocol is a protocol for dynamically exchanging routing information between autonomous systems, the real BGP machine rooms are interconnected through the Internet AS (autonomous system), which is called dynamic BGP.
The above is the essential difference between the dynamic BGP line and the static BGP line introduced by Micronet. I hope it will be helpful to you. Micronet has focused on the hosting and leasing of BGP cabinets for more than ten years. It is a professional IDC data cabinet hosting and leasing provider in Jiangsu Province, specializing in providing BGP cabinet leasing, BGP multi line server hosting BGP multi line server leasing and other services, Baidu standard customized cabinet, 48U super capacity, reduce user cabinet rental fees. If necessary, please contact Micronet.
