What does CN2 line mean in VPS?

ChinaNet

ChinaNet, the world's largest Chinese resource Internet network, is also called the 163 backbone network, AS4134. Many people call it "CN1", which is baseless. Chinatelecom Next Carrier Network, or CNCN for short, is simplified to The names CN2 and CN1 may be based on the analogy of CN2, but there is no such official name. But if you see this statement, you may know that it is ChinaNet, also called 163 network. ChinaNet has more than 80 million Broadband user services, while providing Chinese Internet information on more than 70% of Chinese websites to global users. Most of the export bandwidth is this network. ChinaNet is mainly positioned to carry ordinary quality Internet services because it has early infrastructure and large bandwidth. , and cheap enough. Let's use the Traceroute routing table to take a look at the egress routing situation on the 163 network.

It can be seen that whether it is from the departure point to the provincial interface, the provincial interface to Shanghai overseas export, and then to the United States, the AS4134 and ChinaNet networks are used.

CN2

• Chinatelecom Next Carrier Network, China Telecom's next generation carrier network, abbreviated as CNCN or CN2.

CN2 GT

• GT is Global Transit. The provincial exit is node 202.97. It only enters the CN2 backbone network when crossing the border. The outbound/international cross-border node starts at 59.43. The overall condition of the line is good and the load is moderate, so good speed can be guaranteed. and delay. Provincial/overseas nodes start with 202.97, and international backbone nodes have CN2 nodes starting with 59.43. The CN2 level is lower, better than the 163 backbone network. Up to now, China Telecom has established relationships with international Tier1/2 operators and mainstream OTT The Internet bandwidth exceeds 5000G. The access network itself is ChinaNet (AS4134), but it is directly connected to a service of China Telecom CN2 (as4809). CN2 GT China International Export has its own separate line, but the link in mainland China still uses the 163 backbone network.

CN2 GIA

• GIA is Global Internet Access, which has the highest level and has an excellent experience in terms of speed and latency. In provinces where CN2 nodes are deployed, access the province's provincial CN2 nodes (such as Baoji, Shaanxi), which have not been deployed yet. Provinces with CN2 nodes are connected to CN2 nodes in provinces where CN2 nodes are deployed (such as Hohhot, Inner Mongolia, and CN2 routes are connected in Beijing). GIA CN2 does not guarantee that there will be no 202.97 nodes throughout the process, but is connected to CN2 "nearest" (such as Jiangsu). Zhenjiang, via Nanjing 202.97 node, enters Jiangsu Nanjing CN2 node). Provides corporate customers with high-quality China-bound Internet dedicated line access services. Note that GIA specifically refers to dedicated line services with China. It is mainly a high-quality network provided to enterprises. It has its own access network CN2 (as4809), full export CN2 (AS4809) routing, and international network high-speed and stable links to the network in mainland China. The quality of this bandwidth should be the best in telecommunications networks, but its shortcomings are also obvious. The egress bandwidth of the entire GIA is small, which is more likely to cause network fluctuations under the entire GIA when a large traffic attack occurs. The main advantage of GIA is that it has a separate line back to the country, with high priority and high quality, but the access price is relatively expensive.

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