What kind of connection is used for the interconnection of LAN of different systems

You can buy a wireless router, which is not expensive and convenient to use, such as: tp-link

LAN You can connect it with a network cable.

The difference is that:1. The definition is different.

A local area network is a group of computers that are interconnected by multiple computers in a certain area. The Internet is a vast network of networks connected to each other, which are connected by a common set of protocols to form a logically single huge international network.

2. The scope is different.

A local area network is within a local geographical area (such as a school, factory, or institution), generally within a radius of several kilometers. The Internet connects with the world, and the scope is much larger.

3. The composition is different.

A LAN is composed of network hardware (including network servers, network workstations, network printers, network cards, network interconnection devices, etc.) and network transmission media, as well as network software. The Internet is made up of tens of millions of devices.

Network interconnection refers to the connection of different networks to form a larger-scale network system, realizing data communication, resource sharing, and collaborative work between networks.

A local area network (LAN) is a group of computers that are interconnected by multiple computers in a certain area. Generally, it is within a radius of several thousand meters. LAN enables functions such as file management, application software sharing, printer sharing, scheduling within workgroups, e-mail and fax communication services, and more.

A LAN is closed and can consist of two computers in an office or thousands of computers in a company.

Local area network (LAN) is a computer communication network composed of various computers, external devices and databases connected to each other within a local geographical range (such as a school, factory and institution), generally within a radius of several kilometers. It can be connected with a remote local area network, database or processing center through a data communication network or a dedicated data circuit to form a large-scale information processing system. LAN enables functions such as file management, application software sharing, printer sharing, scanner sharing, scheduling within workgroups, e-mail and fax communication services, and more.

LANs are strictly closed. It can consist of a few or even thousands of computers in the office. The main technical elements that determine the LAN are:

Network topology, transmission media, and media access control methods.

The wireless router at home is connected to the LAN, and the connection station is several, and if it is shared one-to-one, then it can be directly connected to the network cable.

All connected switches, computers to the same workgroup or home group, specified to share data.

Why the subnet mask is; I'll tell you what the subnet mask is used for, first of all, the subnet mask in a LAN must be the same, and secondly, such a subnet mask is used to divide the LAN, that is to say, the number of LAN computers depends on this thing. Through the binary of the IP address and the binary of the subnet mask, the network address and the host number are separated, which is the class C subnet mask, which determines that the IP address can only be in this form, where the network address of the network segment is the network address, and the last digit is different for the host address.

Combined with the above example, the LAN IP can be reached, the first 0 and the last 255 cannot be used, the first 0 is the network segment, representing the entire 0-255, and the last 255 is the broadcast address. Of course, the subnet mask is not necessarily that, you can divide 0-255 into several segments, like 0-255 is a class, you can divide the group, the division method is with the operation (binary), 255 is 8 1s, 1 and any number and operation are any number, 0 and any number and operation are 0, take the subnet mask and IP and operation (binary) to get the network address of the IP (as above, you can try if you are interested, different network segments need to be routed or bridged to access, For example, if you buy a 255-port router (just for example), you divide the computer into several network segments (LAN) through the subnet mask, although they are all connected to the same router, they cannot access each other, that is, the physically connected computer also needs to divide the IP to form a LAN.

6. As for others, sharing, permissions or something, you can set it as needed. You can choose any IP in the ABC class, why are the settings you see on the Internet like this? Even if you want C-segment, what should be the C-segment private IP?

Can't it be? Or is it? Yes, of course you can, according to the rules, you can as much as you want, set the IP in the network segment, because the IP set by the router factory is generally the same, which saves trouble.

Why a router? For home use, the router can be used as a switch or hub, but the hub cannot be used as a router. What do you want a router for?

Easy to surf the internet later. Hubs and switches? The hubs share the egress bandwidth, the switches do not.

7. Many people know what it is, but they don't know why. In addition to these private IPs, there is no problem for you to set up public IPs casually, but it is not recommended to do so, once you connect to the Internet, there will be problems, except for the network of countries like North Korea, where they want to use private and private, and want to use public and public.

Buy a hub, or router, connect all the computers, the gateway settings are the same, and the last bit of the IP is different.

Buy a switch, the 8-port network cables are all connected, and the IP settings are all different.

The subnet gateway can be left unspecified.

DNS can also be left unattended.

Get a router or switch, connect all the computers to it, and set up the route.

It would be nice to change the IP gateway or something for each computer.