Fault Summary of ten types of network protocols (1)

The Network is a complex combination. The network protocol is the "language" for communication between network devices. Therefore, network protocols often fail, so how can we solve these faults? Here we will explain the network protocol faults.

1. Network Protocol Installation Error

The so-called network protocol installation error means that the corresponding network protocol is not installed. For example, in Windows 98, only the NetBEUI protocol is installed by default. To achieve Internet access, you must add the TCP/IP protocol. Some online games and network management software require users to install the IPX/XPX protocol.

2. Network Protocol Configuration Error

The TCP/IP Protocol configuration refers to the IP address information of the computer, including the IP address, subnet mask, default gateway, and DNS Server IP address, as shown in 1.

Figure 1 ip address information

Where:

When an IP address is set incorrectly, it may conflict with the IP address of another computer, or it cannot communicate with other computers in the network. It also cannot access other networks or the Internet.

When the subnet mask is set incorrectly, it may not be able to communicate with some computers in the network, or access other networks or the Internet.

When the default gateway is set incorrectly, it can communicate with computers in the current network, but it cannot access other networks (including virtual network VLANs) or the Internet.

When a DNS server is configured incorrectly, you cannot perform DNS resolution, but can only use IP addresses to access the network. A typical failure is that you can only use QQ instead of Web browsing the Web page.

There are two ways to obtain IP address information: one is to automatically obtain the IP address, which is obtained by the DHCP server or other DHCP devices (such as DHCP server, Broadband Router, wireless router, proxy server, etc) for automatic allocation, you only need to select the "automatically obtain IP Address" option. For another method, you can manually set the IP address information. In this case, you should select the "use the following IP Address" option, and strictly follow the IP address information allocated by the network administrator.
 

The following describes some common network protocol faults and the troubleshooting methods for these faults.