What is the enterprise LAN? How to assemble a ???????????????????????????????

Actually, you're right.

LAN is a network that connects a number of PCs, servers, and other network application equipment through network cables, network switching equipment: routers, switches====, and is divided into LAN, metro, and WAN according to its scale.

You don't have to worry about the concept of enterprise LAN, then this is a concept, your home is the home LAN.

For example, if you have 2 PCs at home and access the Internet through a router, this is a small home LAN.

The kind of simultaneous connection to the server you said is a matter of more than nine years, at that time it was still DOS mostly, windows98 just came out, the Internet is dialed through 56K cats, routing, switching equipment is not as popular as it is now, multiple PCs to access the Internet, you need to go through a more advanced PC (that is, the server you said, now its role has been replaced by routers, switches), and the network at that time was not the current network cable and crystal head, Instead, a coaxial cable is used (similar to the signal cable of cable TV, but the specifications are different).

As for the warehouse, finance, network printing, file server, mail server, etc., etc., etc., which are all the applications of your enterprise on your local area network, these things cannot work without the network; Imagine, you can't connect to the Internet at home, you can't send emails on your computer, you can't get on QQ; What you said is the same, ERP can't work without the network.

I don't know if you can understand if I say that. Thank you.

My personal popular idea is, what is an enterprise LAN, it is a local area network, as long as you want to set up the same gateway for computers in this network, it is under the same network. Everyone can now access each other on the Internet Neighbors.

Your question is too general, and I suggest you ask it based on what you actually need right now.

It depends on how much information the company has and what requirements it has to meet.

1. Set up an intranet. If dozens of computers are connected together with a Layer 2 switch or even a hub, and the IP is matched, it is a small LAN cavity high network with a short answer. If there are more than 100 VLANs, Layer 3 switches are required to divide VLANs to facilitate management and suppress network storms.

2. Control the Internet on the computer. Now it is generally set up on the firewall, which is the last exit for the computer to connect to the external network. In the firewall you can configure those IPs to allow connections to the Internet, those IPs cannot.

If the company is small and does not have a firewall, you can do MAC filtering on the router to control it.

3. Internal management of LAN, domain server can be built to achieve management.

Whether it is switch configuration, firewall configuration, or domain management, there is a deep knowledge in it, which needs to be studied diligently.