The full name of CMI is China Mobile International Limited, which is the abbreviation of China Mobile International Co., Ltd., and the CMI line is called China Mobile Boutique Line for short. CMI is a subsidiary of China Mobile. Founded in December 2010, CMI is headquartered in Hong Kong. CMI carries out international Internet business globally, and now has business in 20 countries and regions around the world.
CMI has 6 self built data centers in the world, distributed in Hong Kong, Singapore, Frankfurt, London and San Jose. The German Frankfurt Data Center and the San Jose Data Center do not have detailed official information at present.
Two export lines from mainland China to international networks
China Unicom AS9929. The industry slang is commonly known as Network A, which is connected to international export boutique lines, and is not much different from CN2GIA.
Telecommunications AS4809. The industry slang is commonly known as CN2 line, the international export boutique line of telecommunications, which is mainly divided into CN2-GT and CN2-GIA networks, of which CN2-GT (the domestic section uses the ordinary line, and the international section uses the CN2 line), CN2-GIA (both domestic and foreign routes use the CN2 line, and the routing node starts at 59.43)
Main differences Quick differentiation:
CN2/GIA line is a product launched by China Telecom
IPLC is a special line product launched by Telecom
CMI is a dedicated line product launched by China Mobile
How to determine whether the server node is on the CMI line
In general, specific information can be seen by testing the VPS server's lines and passing nodes, which can be summarized as follows:
Move CMI line to China via node 223.120. X.X/223.118. X.X (AS58453)
Unicom AS4837 passes through 219.158. X. X node to (AS10099/AS4837) 3>Unicom AS9929 passes through 218.105/210.51 node (AS9929)
The general telecommunication line goes through the 163 backbone network and goes abroad through the 202.97 provincial capital to the 202.97 node of Beijing, Shanghai and Guangzhou (AS4134). 5>Telecommunication CN2GT line: generally, only the 59.43. X.X node goes abroad once in the international export of Beishang advertising
Telecommunication CN2GIA line: it passes through 59.43. x.X node (AS4809) for many times. Methods for detecting CMI lines:
You can use a route tracing tool to trace routes, or use besttrace to test VPS route information. If you can see that the IP segment of the line belongs to the IP segment 223.120, and the AS number is AS58453, it indicates that the CMI line is moving.
Which is better, CMI line or CN2 line
China Telecom's CN2 line was established as early as 2004 and expanded in 2015. The traffic volume of CMI line is less than that of CN2 line, that is, the line is not as congested as CN2 line, and the network quality is better. So CN2 GIA is the best, followed by AS9929.
Some three network AS4837 backhaul optimization and three network mobile CMI backhaul optimization can perform.
The non optimized foreign common VPS is shown as: Telecom 163, Unicom AS4837, and Mobile CMI.
