Build a LAN step by step with me

We all know that the greatest feature of a LAN is that it can achieve optimal resource utilization, such as sharing disk devices and printers, so that files can be called each other within the LAN, it can also be printed on any shared printer. Of course, we can also use Wingate or Sygate or other software to share a modem on multiple hosts to access the Internet; or connect to the Internet through a proxy server to enjoy extraordinary speeds. If you have more than one computer in your house

Upgrade your computer game room to an Internet cafe, so you have to consider connecting them into a LAN.

Don't think it is very difficult. In fact, if we just build a small LAN, we just need to add a few NICs and some data lines, we can do it ourselves ". We know that Windows 98 has built-in Point-to-PC network configuration capabilities, which makes it easy to build a small network. If your lan has many machines, you need a mature network operating system to manage the network, such as Windows NT, Novell Netware, or Linux.

If you just want to connect two PCs with Windows operating systems, we can use the serial and parallel communication cables (PCs to PCs) through the serial and parallel ports of the computer ), after the two computers are connected, select "IPX/SPX compatible protocol" and "netbeui protocol" from "adapter" under "Control Panel/network" of windows ". Start "Control Panel", select "Add/delete programs", click "Install Windows programs", select "communication", click "Direct cable connection", and then use the Windows installation disk for installation. After installation, restart the computer. Select a computer as the host, right-click a drive (such as drive C) in "My Computer" on the host, select "share", and select the sharing level. Run "Direct cable connection" in the attachment of the two hosts, and select the communication port used on the host. Select another client and follow the prompts. Wait a moment until the client is online. Open "Network neighbors" on the "client" desktop and you will find that you are no longer alone. You can access your host through "Network neighbors, you can also use the ing network drive method to map the network drive to your own virtual physical drive. What's more, if your connected host has been connected to a LAN, then you can access all online resources through the host. In addition, while accessing the host, it does not affect the normal operation of the host, which is especially beneficial to users of the laptop.

When there are more than two computers (PCs), you need to use the NIC, network cable, and hub (HU.

If there is no Nic in the LAN, it is like a river without bridges on both sides of the Strait. Network interface card (NIC) is short for network interface card Nic. It is one of the most basic components of LAN. The NIC is installed in the expansion slot of the network computer and server and serves as the physical interface between the computer and the network. Therefore, the NIC is a bridge between receiving and transmitting data. According to the transmission rate, the network adapter can be divided into: 10 Mbps NIC (ISA plug-in or PCI plug-in), 100 Mbps PCI plug-in Nic, 10 Mbps/Mbps adaptive Nic and gigabit Nic. At present, 10 Mbps ISA plug-in Nic still occupies a certain share of the market at a low price. However, due to the low network transmission rate of the 10 Mbps ISA plug-in Nic and occupying a large amount of CPU resources, only applicable to LAN with low speed requirements. Therefore, we recommend that you use a 100 Mbps PCI plug-in or a 10 Mbps/Mbps adaptive Nic, Which is inexpensive and can be adapted to a large number of users, an application environment that transfers large amounts of data online and requires multimedia information.

When selecting a network cable, first check the interface type of the network card you purchased. There are two types of interfaces for the network card: RJ45 port and BNC port.

The BNC port is a NIC interface that uses a fine coaxial cable as a transmission medium. RJ45 is a network interface that uses twisted pair wires as transmission media. RJ45 interfaces are similar to telephone lines, but 8-core connections are used for network lines. The disadvantage of RJ45 is high erection cost, however, it is easy to install and maintain, So we generally use the RJ45 interface. Hub (HU: based on the number of computers, the hub is used to form a star structure. When there are many workstations, the processing speed of the hub is much lower than the transmission speed of the communication line, this causes bottlenecks. If conditions are met, you can use a vswitch. A domain composed of a hub is called a conflict domain. That is to say, when any computer on the network sends and receives data, all other computers can receive the data, and these computers cannot send and receive data at the same time, otherwise, a collision will occur (CSMA/CD will prevent the collision ). In addition, each computer connected to the hub must detect the destination address of the received data to confirm whether it has received its own communication information. Therefore, the CPU usage of the computer is high, and the entire network is less efficient, applicable only to small-sized workgroup-level applications.

The role of a hub is:

(1) Each twisted pair interface is connected to only one workstation (network card), and the signal is transmitted point-to-point.

(2) When a port receives a signal, the hub reshapes it and broadcasts it to each other port.

(3) The Hub itself can automatically detect signal collisions. When a collision occurs, it immediately sends a blocking (JAM) signal to notify other ports.

(4) When the transmission line or network card of a port fails, the hub automatically isolates the port so that it does not affect the normal operation of other ports. Because the M hub is expensive, we generally select a Mbps Nic, a 10 m hub, and then upgrade it to a m hub as needed.

OK! All the components required for the LAN have been completed. Now let's build the LAN step by step based on the most stable personal operating system Windows2000 Professional.

To connect to a LAN, follow these steps:

1. Install the NIC. Close the computer, open the chassis, find an idle PCI slot (usually a short white slot), insert the NIC, and install the screws.

2. Connect the network cable. Insert a network cable at the network adapter and a network adapter at The Hub (HU.

3. Install the NIC Driver. Open the computer, the operating system detects the NIC and prompts you to insert the driver disk. Insert the driver disk that is sold with the NIC, and click "Next". After windows finds the driver, a confirmation screen is displayed, and click "Next ". If the driver is not found in windows, click the Browse button in the device driver Wizard to specify the drive location. If your driver is not the latest version, open device management, run the Update Device Driver wizard, double-click network adapter, and select your network adapter, select the driver and click upgrade driver. Windows will prompt you to insert the Windows installation disk, follow the prompts to operate. You must also specify a unique name and the same working group name (such as the default workgroup) for each computer in the network, and then restart the computer. Right-click the "my computer" icon on the desktop and click "properties ". In the pop-up dialog box, click "network ID", then click "properties", enter the name of the machine you want to specify in the "computer" name, and enter a uniform working group name in the Working Group, click OK. (Figure 1)

4. install necessary network protocols. Right-click the "Network Neighbor" icon on the desktop, click "properties", right-click the "local connection" icon, and click "Install" in the pop-up attribute dialog box ", double-click "protocol" to install "Internet Protocol (TCP/IP)", double-click "customer" to install "Microsoft network client", and restart the computer.

5. Achieve network sharing. Right-click the "Network Neighbor" icon on the desktop, click "properties", right-click the "local connection" icon, and click "Install" in the pop-up attribute dialog box ", double-click "services" to install "Microsoft network file and printer sharing" and click "OK". These settings are valid only after you restart your computer. If you want to share a drive or directory, open my computer in resource manager or on the desktop, right-click the drive or directory you want to share, and select share ", enter the corresponding content. If you select to share the entire drive, all directories under the drive are shared by the network. Open the "Network Neighbor" icon to obtain a list of computers on the network. Double-click the computer you want to access to enter the drive. To map network drives, see the Windows Help file. If a problem occurs when you use a network to access a printer or another computer, check your network connection to ensure that the connection and sharing settings are correct. (Figure 2)

6. Set an optional start password. When the computer is started for the first time after the network driver is installed, a dialog box will pop up prompting you to enter the Microsoft network user and password. Enter the user name, which will be automatically displayed each time you start the computer (you can use the computer name specified in step 3 ). If you do not want to set a password, leave it blank and click "OK". Otherwise, enter the password and confirm the password. If the entered password does not match the set password, the computer can run the operating system locally, but cannot share resources online.

In this way, a simple LAN Based on Windows2000 professinal is built up. You can also use the above method to build a LAN between your neighbors. From then on, your computer will no longer be alone.
We all know that the greatest feature of a LAN is that it can achieve optimal resource utilization, such as sharing disk devices and printers, so that files can be called each other within the LAN, it can also be printed on any shared printer. Of course, we can also use Wingate or Sygate or other software to share a modem on multiple hosts to access the Internet; or connect to the Internet through a proxy server to enjoy extraordinary speeds. If you have more than one computer in your house and want to upgrade your computer game room to an Internet cafe, you have to consider connecting them into a LAN.

Don't think it is very difficult. In fact, if we just build a small LAN, we just need to add a few NICs and some data lines, we can do it ourselves ". We know that Windows 98 has built-in Point-to-PC network configuration capabilities, which makes it easy to build a small network. If your lan has many machines, you need a mature network operating system to manage the network, such as Windows NT, Novell Netware, or Linux.

If you just want to connect two PCs with Windows operating systems, we can use the serial and parallel communication cables (PCs to PCs) through the serial and parallel ports of the computer ), after the two computers are connected, select "IPX/SPX compatible protocol" and "netbeui protocol" from "adapter" under "Control Panel/network" of windows ". Start "Control Panel", select "Add/delete programs", click "Install Windows programs", select "communication", click "Direct cable connection", and then use the Windows installation disk for installation. After installation, restart the computer. Select a computer as the host, right-click a drive (such as drive C) in "My Computer" on the host, select "share", and select the sharing level. Run "Direct cable connection" in the attachment of the two hosts, and select the communication port used on the host. Select another client and follow the prompts. Wait a moment until the client is online. Open "Network neighbors" on the "client" desktop and you will find that you are no longer alone. You can access your host through "Network neighbors, you can also use the ing network drive method to map the network drive to your own virtual physical drive. What's more, if your connected host has been connected to a LAN, then you can access all online resources through the host. In addition, while accessing the host, it does not affect the normal operation of the host, which is especially beneficial to users of the laptop.

When there are more than two computers (PCs), you need to use the NIC, network cable, and hub (HU.

If there is no Nic in the LAN, it is like a river without bridges on both sides of the Strait. Network interface card (NIC) is short for network interface card Nic. It is one of the most basic components of LAN. The NIC is installed in the expansion slot of the network computer and server and serves as the physical interface between the computer and the network. Therefore, the NIC is a bridge between receiving and transmitting data. According to the transmission rate, the network adapter can be divided into: 10 Mbps NIC (ISA plug-in or PCI plug-in), 100 Mbps PCI plug-in Nic, 10 Mbps/Mbps adaptive Nic and gigabit Nic. At present, 10 Mbps ISA plug-in Nic still occupies a certain share of the market at a low price. However, due to the low network transmission rate of the 10 Mbps ISA plug-in Nic and occupying a large amount of CPU resources, only applicable to LAN with low speed requirements. Therefore, we recommend that you use a 100 Mbps PCI plug-in or a 10 Mbps/Mbps adaptive Nic, Which is inexpensive and can be adapted to a large number of users, an application environment that transfers large amounts of data online and requires multimedia information.

When selecting a network cable, first check the interface type of the network card you purchased. There are two types of interfaces for the network card: RJ45 port and BNC port.

The BNC port is a NIC interface that uses a fine coaxial cable as a transmission medium. RJ45 is a network interface that uses twisted pair wires as transmission media. RJ45 interfaces are similar to telephone lines, but 8-core connections are used for network lines. The disadvantage of RJ45 is high erection cost, however, it is easy to install and maintain, So we generally use the RJ45 interface. Hub (HU: based on the number of computers, the hub is used to form a star structure. When there are many workstations, the processing speed of the hub is much lower than the transmission speed of the communication line, this causes bottlenecks. If conditions are met, you can use a vswitch. A domain composed of a hub is called a conflict domain. That is to say, when any computer on the network sends and receives data, all other computers can receive the data, and these computers cannot send and receive data at the same time, otherwise, a collision will occur (CSMA/CD will prevent the collision ). In addition, each computer connected to the hub must detect the destination address of the received data to confirm whether it has received its own communication information. Therefore, the CPU usage of the computer is high, and the entire network is less efficient, applicable only to small-sized workgroup-level applications.

The role of a hub is:

(1) Each twisted pair interface is connected to only one workstation (network card), and the signal is transmitted point-to-point.

(2) When a port receives a signal, the hub reshapes it and broadcasts it to each other port.

(3) The Hub itself can automatically detect signal collisions. When a collision occurs, it immediately sends a blocking (JAM) signal to notify other ports.

(4) When the transmission line or network card of a port fails, the hub automatically isolates the port so that it does not affect the normal operation of other ports. Because the M hub is expensive, we generally select a Mbps Nic, a 10 m hub, and then upgrade it to a m hub as needed.

OK! All the components required for the LAN have been completed. Now let's build the LAN step by step based on the most stable personal operating system Windows2000 Professional.

To connect to a LAN, follow these steps:

1. Install the NIC. Close the computer, open the chassis, find an idle PCI slot (usually a short white slot), insert the NIC, and install the screws.

2. Connect the network cable. Insert a network cable at the network adapter and a network adapter at The Hub (HU.

3. Install the NIC Driver. Open the computer, the operating system detects the NIC and prompts you to insert the driver disk. Insert the driver disk that is sold with the NIC, and click "Next". After windows finds the driver, a confirmation screen is displayed, and click "Next ". If the driver is not found in windows, click the Browse button in the device driver Wizard to specify the drive location. If your driver is not the latest version, open device management, run the Update Device Driver wizard, double-click network adapter, and select your network adapter, select the driver and click upgrade driver. Windows will prompt you to insert the Windows installation disk, follow the prompts to operate. You must also specify a unique name and the same working group name (such as the default workgroup) for each computer in the network, and then restart the computer. Right-click the "my computer" icon on the desktop and click "properties ". In the pop-up dialog box, click "network ID", then click "properties", enter the name of the machine you want to specify in the "computer" name, and enter a uniform working group name in the Working Group, click OK. (Figure 1)

4. install necessary network protocols. Right-click the "Network Neighbor" icon on the desktop, click "properties", right-click the "local connection" icon, and click "Install" in the pop-up attribute dialog box ", double-click "protocol" to install "Internet Protocol (TCP/IP)", double-click "customer" to install "Microsoft network client", and restart the computer.

5. Achieve network sharing. Right-click the "Network Neighbor" icon on the desktop, click "properties", right-click the "local connection" icon, and click "Install" in the pop-up attribute dialog box ", double-click "services" to install "Microsoft network file and printer sharing" and click "OK". These settings are valid only after you restart your computer. If you want to share a drive or directory, open my computer in resource manager or on the desktop, right-click the drive or directory you want to share, and select share ", enter the corresponding content. If you select to share the entire drive, all directories under the drive are shared by the network. Open the "Network Neighbor" icon to obtain a list of computers on the network. Double-click the computer you want to access to enter the drive. To map network drives, see the Windows Help file. If a problem occurs when you use a network to access a printer or another computer, check your network connection to ensure that the connection and sharing settings are correct. (Figure 2)

6. Set an optional start password. When the computer is started for the first time after the network driver is installed, a dialog box will pop up prompting you to enter the Microsoft network user and password. Enter the user name, which will be automatically displayed each time you start the computer (you can use the computer name specified in step 3 ). If you do not want to set a password, leave it blank and click "OK". Otherwise, enter the password and confirm the password. If the entered password does not match the set password, the computer can run the operating system locally, but cannot share resources online.

In this way, a simple LAN Based on Windows2000 professinal is built up. You can also use the above method to build a LAN between your neighbors. From then on, your computer will no longer be alone.