Let's talk about the network management of Internet cafes. When it comes to network management, we have to mention the network administrator, because he is the planner and executor of network management, and his personal ability determines the quality of network management. As a qualified network administrator, you need to have rich knowledge of network technology, master the configuration and operation of each system, read and memorize the operating instructions of various systems and equipment in the network system, so that when the system or network fails, you can quickly judge the links and causes of the failure and find a quick and simple way to eliminate the failure.
Under the normal operation of the network, the management of network infrastructure mainly includes: ensuring the normal transmission of the network; Master the configuration and configuration parameter changes of Internet bar backbone equipment, and back up the configuration files of each equipment. The devices here mainly refer to switches and broadband routing. Responsible for the management of network wiring distribution frame to ensure reasonable and orderly wiring; Master the internal network connection, so as to quickly find the problem and locate it; Master the connection configuration with the external network, supervise network communication, and contact relevant institutions in time after finding problems; Real-time monitoring of the operation and communication flow of the entire Internet cafe internal network.
One of the core tasks of maintaining the network operating environment is to manage the operating system of Internet cafes. This refers to the operating system of the server. In order to ensure the normal operation of the server operating system, we should be able to use the management software provided by the operating system and downloaded from the Internet to monitor the operation of the system in real time, optimize the performance of the system, and find and deal with fault symptoms in time. If necessary, it is necessary to establish a hot backup of key server operating systems to avoid fatal failures that lead to network paralysis.
The management of network application system is mainly aimed at the management of functional servers that provide services for Internet cafes. These servers mainly include proxy server, game server and file server. Familiar with the hardware and software configuration of the server, backup the software configuration. Game software, audio and video files should be updated frequently to meet the requirements of users.
Network security management should be said to be more difficult in network management and a headache for administrators. Because users may visit various websites, their security awareness is weak, and virus infection is inevitable. Once the machine is infected, it will have a chain reaction, leading to the paralysis of the whole network. Therefore, we must nip in the bud, set up a firewall for the server, scan system security vulnerabilities, install anti-virus software, keep the virus database up-to-date, and scan viruses regularly.
The most important thing in a computer system is data. Once the data is lost, the loss will be huge. Therefore, the management of file storage and backup in Internet cafes is to avoid such a thing. Internet cafe billing data and important network configuration files need to be backed up, which requires mirroring in the storage system of the server to protect the data from disaster.
Let's talk about the common faults of Internet cafes and analyze them. It depends on experience to solve network faults. If you encounter and solve more faults, you will naturally become an expert.
For the common faults of internet cafes, such as crash and restart, CPU temperature is too high; This machine has a virus; There is something wrong with the operating system or power supply. These faults are obvious and easy to judge and solve. However, many faults are hidden. This fault is like this. Let's take a look at its analysis process. The webmaster learned that there is a machine in the Internet cafe, and the Internet access speed is extremely slow, intermittent, and sometimes the webpage cannot be opened. He came to deal with it as soon as he received the notice. He first pinged the file server in the Internet cafe and found that the return time was very slow, usually reaching several hundred milliseconds, and sometimes even overtime. It seems that this is a typical network interference problem. He checked the network configuration and network card and found nothing wrong. The problem must be the network cable or network interface. But the network cable was newly made in the morning, so it should be no problem. Therefore, the switch interface was tested, and no abnormal phenomena such as packet loss were found. It seems that it should be a network cable problem, and the test results with instruments also show that it is a network cable problem. He wants to know that the crystal head and thread are all new. How come... He inspected the crystal head below and found that the copper sheet on the crystal head was oxidized to black. It seems that the fault should appear here. After removing the oxide layer with a knife, reconnect the twisted pair to the switch, and the fault has been solved. But how can the new crystal head be oxidized? Later, it was found that there was an electric rice bag under the cabinet where the crystal head was placed. Oh, it turned out that the copper sheet of the crystal head was oxidized by the steam of cooking. This incident also reminds us that we can't ignore the influence of the environment on network equipment and devices.
Fault analysis of slow internet speed in internet cafes. Among many network failures, the most troublesome thing is that the network is on, but the network speed is very slow. When encountering this kind of problem, people are often at a loss. The following are the common causes and troubleshooting methods of this kind of fault.
Network cable problem. Twisted-pair cable is composed of four pairs of wires tightly and reasonably wound together to reduce the influence of background noise. However, the network cable that is not made according to the correct standard has great hidden dangers. Some of them started to work normally, but after a period of time, their performance declined and the network speed slowed down.
Circulation problem. Generally, this situation rarely happens when the network scale is small, the number of nodes involved is small and the structure is not complicated. However, in some complex networks, it is easy to form a loop, and data packets will continue to send and check data, thus affecting the overall network speed, and it is difficult to find. In order to avoid this situation, it is required to develop good habits when wiring.
Broadcast storm. As the main means of discovering unknown devices, broadcasting plays a very important role in the network. However, with the increase of the number of computers in the network, the number of broadcast packets will increase dramatically. When the number of broadcast packets reaches 30%, the network transmission efficiency will decrease obviously. When the network card or network equipment is damaged, broadcast packets will be sent continuously, which will lead to a broadcast storm and paralyze network communication.
Port bottleneck. In fact, the router's WAN port, LAN port and server network card may all become network bottlenecks. Network administrators can use network management software to check the data flow of routers, switches and server ports during the peak period of network use to determine the location of network bottlenecks and try to increase their bandwidth.
Worm virus. Worm virus has more and more serious influence on network speed. This virus causes infected users to keep sending emails as long as they are connected to the Internet. The virus randomly selects documents from the user's computer and attaches them to random addresses in the user's address book to send emails. Spam is queued up and some of it is returned to the server in batches. As a result, individual backbone Internet appears obvious congestion, and local area network is almost paralyzed. Therefore, Internet cafe administrators should always pay attention to all kinds of new virus notifications and understand the characteristics of various viruses; Upgrade the anti-virus software used in time and install system patches; At the same time, unnecessary services are uninstalled and unnecessary ports are closed to improve the security and reliability of the system.
Network management and software and hardware fault analysis of Internet cafes need solid knowledge accumulation of network technology and rich troubleshooting experience, so administrators of Internet cafes need to constantly learn and enrich themselves in order to cope with various possible problems.