The best 4g router has the function of judging the network address and selecting the IP path, it can establish the flexible connection in the multi-network interconnection environment, and can connect various subnetworks with completely different data packet and media access methods, the router only accepts the information of the source station or other routers, and belongs to the interconnection equipment of the network layer. It does not care about the hardware devices used by the subnets, but requires the software to run in accordance with the network layer protocol.

1.Modular router

 Modular router mainly refers to the interface type and some extended functions of the router can be configured according to the actual needs of users. These routers generally provide only the most basic routing functions when they leave the factory, users can choose the corresponding module according to the type of network they want to connect to. Different modules can provide different connection and management functions. For example, most modular routers allow the user to choose the type of network interface, some modular routers provide functional modules such as VPN, some modular routers also provide firewall functions, and so on. Most routers today are modular.

2. Broadband routers

Broadband router is a new network product in recent years. It comes into being with the popularization of broadband. In a compact box, the broadband router integrates the functions of router, firewall, bandwidth control and management, with the characteristics of fast forwarding, flexible network management and rich network state. Most broadband routers are optimized for Chinese broadband applications and can meet different network traffic environments with good network adaptability and network compatibility. Most broadband routers have a highly integrated design that integrates a 10/100Mbps Broadband Ethernet WAN interface with a built-in multi-port 10/100Mbps adaptive switch to allow multiple machines to connect their internal networks to the Internet, can be widely used in homes, schools, offices, internet cafes, community access, government, enterprises and other occasions.