What is the principle of the router? Router working principle

What is the principle of the router? The interoperability of network devices mainly use IP addresses, and routers can only transmit data according to the specific IP address. The IP address consists of two parts: network address and host address. Use subnet mask on the Internet to determine the network address and host address.

The subnet mask is the same as the IP address of 32 -bit, and the two correspond to the two. The network address in the IP address in the subnet mask, 0 corresponding host address, network address and host address constitute a complete IP address.

In the same network, the network address of the IP address must be the same. The communication between computers can only be performed between IP addresses with the same network address. If you want to communicate with other online computers, you must forward it through a router.



The IP address of different websites cannot be communicated directly, and even if the distance is close, it cannot be communicated. Multiple ports of the router can connect multiple paragraphs, and the URL of the IP address of each port must be consistent with the URL of the connected paragraph.

Depending on the port, the network address is different, and the corresponding network segment is different. The hosts of each network segment can send data to the router through the IP address of its own network segment.

传输介质路由器分为当地路由器和远程路由器，当地路由器用于连接光纤、同轴电缆、双绞线等网络传输介质，远程路由器用于连接远程传输介质，电话线需要调制解调器，无线需要无线接收机、 transmitter.

Structural power interface (POWER): The interface is connected to the power supply. Reset key: This key can restore the factory settings of the router. Cat (Modem) or switch connectors (WAN): The connector is connected to the home broadband modem (or switch). Computers and router connectors (LAN1 ~ 4): The connector connects the computer and router with a network cable.