What is a CIA line? What is a cn2 line? What is line 163?

What is a CIA circuit? What is a cn2 line? What is line 163?

For China Telecom customers, common lines are divided into traditional 163 lines and optimized CN2 lines, and CN2 lines are divided into CN2 GT and CN2 GIA lines. The speed difference between them is definitely getting faster and faster. The following is an introduction to the three bearer networks of China Telecom.

1. Three types of telecommunications bearer networks

Telecom's three bearer networks are the traditional 163 backbone network, CN2 GT lines, and CN2 GIA lines. The concepts and differences of these three bearer networks are introduced below:

Traditional 163 backbone network: This is the most common (ordinary) line. The backbone nodes all start with 202.97. Because there are many people using it and the degree of optimization is low, it is more popular on overseas routes. Congestion, slow speed, especially during the evening export peak period, the packet loss rate may be relatively high.

CN2 GT line:GT is the abbreviation of Global Transit. It is a mid-range product in the CN2 line and its level in CN2 is relatively low. The provincial exit is node 202.97, which only enters the CN2 backbone network when crossing the border. The outbound/international cross-border node starts at 59.43. Therefore, network congestion may occur during the evening peak period, but there are still many improvements compared to the traditional 163 backbone network.

CN2 GIA line:GIA is the abbreviation of Global Internet Access. It is currently the most high-end product in CN2 and has the highest level in CN2. It can be connected to the province where CN2 nodes are deployed nearby. Provincial CN2 nodes. In provinces where CN2 nodes have not yet been deployed, they will be connected to the nearest provinces where CN2 nodes are deployed (such as Hohhot, Inner Mongolia, and CN2 routing in Beijing). GIA CN2 does not guarantee that there will be no 202.97 nodes throughout the process, but "nearby" "Connect to CN2 (for example, Zhenjiang, Jiangsu, enter the CN2 node in Nanjing, Jiangsu through the Nanjing 202.97 node). The line performs best and is the most stable, with few congestions. Even during the evening peak, the line performs well, but the price is also the highest.

Three networks direct connection: Generally speaking, telecom users will use the CN2 GIA line, but some businesses optimize routing and allow China Mobile and China Unicom users to also use the CN2 GIA line, which provides ideal speeds.

How to determine the line type

The basic concepts of the traditional 163 backbone network, CN2 GT line and CN2 GIA line have been introduced above. The main way to distinguish these three lines is to look at the backbone node IP of this line. All 202.97 start with 163, all 59.43 The ones are CN2 GIA and CN2 GT.

2. What is a CIA line?

The CIA line is the cn2+163 hybrid line.

163 combined with CN2 GIA is a solution adopted by very few ISPs. As we mentioned above, CN2 GIA has a very small backbone network, which can easily lead to outages due to attacks, so we provide 163 IN to protect customers. The business will not be interrupted due to attacks (the cost of large-traffic attacks is too high, and bandwidth is used to resist without close proximity, so 100G 4134 bandwidth is connected to solve the traffic in the Chinese direction), and then the OUT direction is provided by CN2 GIA The best access quality. For example, Idcbest.com adopts such a network architecture. There are 163 and overseas operators' large-capacity networks in the front end to provide traffic cleaning, and CN2 GIA back home to ensure service quality. This is basically the optimal configuration solution at present. ,none of them. This characteristic is still that the price of GIA bandwidth is too high, and there will be no cheap products.

Of course, there is also a way of combining 163 with overseas operators. Sometimes the routes taken by some overseas ISPs are not blocked, and we will also send part of the traffic to this direction. Because CN2 GIA occasionally has BOOM.

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