LAN 1, 2, 3, and 4 are all Layer 2 interfaces working in the same network segment, with the same functions, and they are all wired network cards connected to computers with twisted pairs.
Interface between computer and router (LAN 1~4): This interface connects computer and router with network cable.
It should be noted that the WAN port and LAN port must not be reversed.
The IP addresses of home wireless routers and wired routers are mainly 192. 168. 1 and192.168.0.1.
The IP address, login name and password are usually marked at the bottom of the router.
Extended data:
Due to the narrow geographical area, the transmission rate of local area network is usually much higher than that of wide area network. For example, the transmission rate of LAN is 100Mb/s, the transmission rate of FDDI is 100 MB/s, while the relay rate of WAN is only 64kbps or 2.048Mbps in China, and the upper limit rate of end users is usually 14.4kbps.
The topological structure of local area network is usually bus type and ring type, which is determined by the limited geographical scope. These two structures are rarely used in WAN environment.
Local area network also has the characteristics of high reliability, easy expansion, easy management and security.
Local area network is generally owned by a department or unit, so it is easy to build, maintain and expand the network, and the system has high flexibility. Its main features are:
The geographical area covered is very small, and it is only connected in a relatively independent local area, such as a building or a concentrated building group.
Using specially paved transmission media for networking, the data transmission rate is high (10MB/s ~ 10GB/s).
The communication delay time is short and the reliability is high.
LAN can support multiple transmission media.
References:
Baidu encyclopedia-router