What is the current network architecture in Chinese mainland? For example, everyone writes about the Internet and so on. Who can help me introduce it in detail?

Hehe, I know a little. Let's see if I can help you. After the reorganization of China's network, there are now several operators, namely Telecom, China Unicom and China Mobile. The network you refer to must be the operator's network. For example, the big network of telecom is called chinanet, the other is CN2, and Unicom is called 169. Actually 169 used to be netcom, hehe. Unicom also has CNCNET(9929), ip bearer network, and also carries A network and B network, and so on. Mobile is called CMNET and also has its own ip bearer network. These large-scale networks are used by internal networks, some provide services for users, some are mobile phone networks, some are fixed networks and so on. Their services are different and their applications are different.

As for the topology you said, hehe, in fact, only insiders know. These topologies are actually very simple, and when they are complicated, they are very, very complicated. Simply put, the core equipment is basically in Beijing, Shanghai and Guangzhou, gathered in various provinces, and then connected to various cities. I only remember that CN2' s international exports are in the North, Shanghai and Guangzhou networks. I don't know.