Difference between WAN port and LAN port on the router

The difference between the WAN port and the LAN port on the router is that most homes use ADSL telephone lines to access the Internet, and there are usually several computers in the home. So how can we make several computers access the Internet at the same time? This requires a Broadband Router. In general, there are several network cable ports on the Broadband Router. Some of these network cable ports are labeled as WAN, and some are marked as LAN. What does it mean? What is the difference? Next, let's look at it. Www.2cto.com 1. The difference between the WAN port and the LAN port on the Broadband Router is written in the first letter of the English Wide Area Network, which represents the WAN, while the LAN is written by the Local Area Network, that is, the local network (or LAN ). From their names, we can easily see that the WAN port is mainly used to connect external networks, such as ADSL, DDN, and Ethernet access lines, while the LAN port is used to connect the internal network of the home, it is mainly connected to vswitches, hubs, or PCs in the home network. It can be said that these two types of network ports are external and internal. Www.2cto.com 2. network cable connection method of the WAN port and LAN port on the Broadband Router first, the network cable provided by the network operator is inserted on the WAN port, then, connect several computers with Internet shared access to the LAN port, and then use a computer to log on to the management interface of the router and perform corresponding configuration to complete Internet shared access. 3. network data transmission at the WAN port and LAN port when a machine in the home network sends data packets to the external network, a request is sent to the default gateway, that is, to the Broadband Router. When the router analyzes the Intranet IP address in the packet, it checks the NAT address translation table of the device. After the corresponding entries are found, the WAN port IP address is used to communicate with the external network. After the external network receives the data packet, it will parse the WAN port IP address of the router in the data packet, respond to the address, and send the response packet to the router. Then, the vro performs NAT address translation again to convert the WAN port IP address to the Intranet IP address that sends the request, and finally completes the entire packet sending and receiving process.
As the number of computers requiring Internet access increases in the family, many families have chosen broadband routers to achieve Internet sharing. However, due to lack of knowledge about the network, many users have bought a Broadband Router, some network ports are marked with WAN, and some network ports are marked with LAN. What are their respective purposes? What is the difference between the two? How can we better use them? This article will help you understand the differences between the two types of network ports on the Broadband Router and some new methods. Www.2cto.com 1. Differences between WAN port and LAN port anyone familiar with the Network knows that WAN is written in the first letter of the English Wide Area Network, that is, WAN, while LAN is written in the Local Area Network, that is, the local network (or LAN ). Then we may give the WAN port and LAN port on the router a Chinese name, which are the WAN port and the domestic network port.
From their names, we can easily see that the WAN port is mainly used to connect external networks, such as ADSL, DDN, and Ethernet access lines, while the LAN port is used to connect the internal network of the home, it is mainly connected to vswitches, hubs, or PCs in the home network. It can be said that these two types of network ports are external and internal. In addition to increasing bandwidth, the multi-Wan port Broadband Router supports full-automatic load balancing and real-time backup. You can specify a priority channel based on the source or destination address, automatic traffic redistribution in case of a fault. Using a multi-Wan port Broadband Router can basically avoid network interruptions caused by network operators. Although the purchase of Multi-Wan Port Routers and the increase of network access lines will increase investment, but for the investors, the guarantee is far greater than www.2cto.com. 3. When using a Broadband Router as a switch, in addition to the conventional usage of connecting a WAN port to an Internet access line and connecting a LAN port to an intranet computer, we can also connect both the user line and the network cable connected to the computer to the LAN port, and consider the Broadband Router as the switch using this connection method, first, you need the LAN port of your Broadband Router or the network port of the connected device to support port switching (Auto MDI/MDIX). Otherwise, you may need to change your direct connection to a cross line, so that your Broadband Router can connect to the external network through the LAN port. In this way, the routing function of the Broadband Router is lost. To achieve Internet sharing, your computer in the home network needs to use the valid IP address in your carrier's network. At the same time, in order to keep the vro accessible, you must set the IP address of the LAN port of the vro。 as the valid carrier address.