At present, many families have basically installed home broadband. Although broadband operators are different, one of the almost indispensable equipment when installing broadband is a wireless router. For China Telecom, China Unicom, and China Mobile, the three major operators have basically realized fiber optic cable access to their homes, and realized photoelectric conversion through optical modems. Most of the optical modems equipped with wireless router functions. The operator-customized optical modem has a low configuration. Although it has its own wireless function, the antenna is built-in and the signal is weak. The home coverage is not ideal. Therefore, it is indispensable for users to prepare their own wireless router.
Observe carefully, you will find that a general wireless router has a WAN port and four LAN ports (the colors of the WAN port and the LAN port are generally different). For high-end wireless routers or corporate routers, the number of WAN ports and LAN ports may be different. For third-party firmware, the number of WAN and LAN ports can be set and adjusted in the router, and the LAN port can be used as a WAN port ( This article does not elaborate on this). The figure below shows the layout and quantity of one of the common wireless router network ports.
For general users, the difference between the WAN port and the LAN port may not be clear, so let's briefly explain it below. The WAN in the WAN port is the abbreviation of the English word Wide Area Network, which means wide area network in Chinese. LAN in the LAN port is the abbreviation of the English word Local Area Network, which means local area network in Chinese. The WAN port is generally connected to an optical modem, and you can set PPPOE dial-up (optical modem bridge mode) in the router to automatically obtain IP (optical modem routing mode, optical modem assigns IP).
Notes in use, the WAN port is generally used to connect to the external network or upper-level network, such as connecting optical modems or upper-level routers, etc., generally cannot be connected It can't be used to set up a wireless router for computer use. The LAN port of a wireless router is generally used to connect to a computer or other devices that need to access the Internet, such as a smart TV, a network printer, or the WAN port of a lower-level router. All devices connected to the LAN port are in a local area network, and the devices can access each other.
The above is a detailed explanation of the difference between the WAN port and the LAN port of the wireless router, and the precautions in use.
Welcome to follow and leave a message.
