Knowing that setting up a wireless router isn't enough. Really understanding the router is the key!

May 30, 2023

Speaking of WIFI, everyone should not be unfamiliar with it. In the age of smartphones, few people in the city should have WIFI installed at home. Some people like to buy wireless routers online, but this requires their own settings, but this setup is actually very simple and can be set up according to the instructions. However, if there is a problem with the wireless router, it is not a question of what the network is. It does not know how to start it. Therefore, it is very important to understand the router, especially the network parameters.

The following is mainly for everyone to explain the network parameters.

To set up the router we must first connect the router, and then enter its IP to set it. Now many routers just enter the route directly as long as set the login password, and then follow the setup wizard step by step to set up OK. It is quite human, afraid that people will not operate, making the operation more and more simple, the previous router also needs to enter the default password it sets, and then find the setup wizard, and then set. Now we save a lot of things for everyone.

Some routers now have the ability to automatically modify the LAN port IP as soon as you set up the WAN to automatically obtain IP, and you will be able to access the Internet immediately. However, some routers also need to be set manually.

First: The WAN port of the router

The WAN port is the router's external network interface, which is equivalent to the outside of the incoming line interface, it has its own IP, MAC address, and access to IP in a variety of ways.

From the above figure, we can see that the WAN port can be dialed through PPPOE. This way of surfing the Internet is generally because you are using a broadband account to access the Internet. However, this way of accessing your network is randomly assigned, if you want to have Fixed IP address, then you need to set the interface type to a fixed IP, this method is generally used when the computer needs to be directly accessed by the outside world. There is also an interface type that automatically obtains IP. Generally, when a router needs to be connected to a router behind the router, an IP address is automatically obtained.

Other uses are quite small, so I don't have to explain too much.

Second: The router's LAN port

The LAN port is the intranet interface of the router. Its LAN port is an identity of the PC when it accesses the intranet. Therefore, when logging in to the router, we enter the router's LAN port. If the router's LAN is changed, the IP that we enter into the router must also be changed to the modified IP address. Modifying the LAN IP is generally used when multiple routers are connected in series. In this case, the router's WAN interface type is automatically obtained.

However, for security reasons, many of them modify the IP of the LAN port. For example, government agencies do not generally know their intranet IP.

Third: the MAC address of the router

If the router's WAN port and LAN port IP address are stage names, then the WAN port and LAN port's MAC address is its real name. IP addresses are virtual addresses that are easy to use and recognize. The MAC address means the physical address. For example, some fixed network service providers bind an account. That is, the WAN port MAC address is bound to it through the account. If you change the router, you need to loosen it. Otherwise, it is not connected. If you start dialing through the computer, and then install the router. At this point, the service provider has bound an account. Then we can call them to loosen up by calling them, or by cloning the PCMAC address.

This is the router's three main parameters, to understand these parameters, what problems the future routers are also easy to solve.

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