question:Both laptops are surfed through wireless network cards and wireless broadband routers. Recently, a strange window pops up as soon as one of the laptops opens IE. Then both laptops cannot access the Internet. After restarting the broadband router, it will not be used normally for more than 5 minutes, and it will not be able to access the Internet again. May I ask what's going on.
answer:If the setup problem is excluded, it is recommended to check and kill viruses on both laptops. Especially the notebook that will automatically pop up the window when I open IE, it is very likely that I will get a virus. Some network viruses will specifically attack specific ports of broadband routers or continuously send broadcast packets on the network. When encountering such a situation, the broadband router will cause crashes and disconnection due to excessive load. As you described, if you use it normally for a period of time after restarting, it is basically certain that the virus is making a monster. After the above analysis, it is recommended that users should carefully check whether there are viruses or other problems when such problems occur in the computer.
There are also some reasons that are prone to crashing broadband routers for reference and troubleshooting:
1. Too many client connections
When promoting their broadband router products, many manufacturers generally mention a number of connected machines that can be connected. Most manufacturers will say that their four-port broadband routers can carry 10-20 machines. However, some users will crash and disconnect after 10 units of the machine during use. During the purchase process, we first need to analyze whether the number of their broadband routers matches their own machines and applications. Sometimes, because your actual environment is not suitable for using the purchased products, the broadband router will not be able to bear the network load at all, resulting in the problem of crashes and disconnection.
From a technical point of view, we usually talk about using NetIQ Chariot software to test product performance (smartbit purchase cost is too high), and there is a session evaluation that can illustrate some problems. In the four-port broadband routers evaluated by IT168, this session option will be used in the test. Let’s not talk about the throughput and processing performance for the time being, but will only talk about this option that is directly related to the number of belt drives. Generally, broadband routing with better performance can establish 300 pairs of sessions at the same time. The fewest ones can only reach 200 sessions.
Let's assume that 10 broadband routers have machines (these are all connections from the intranet to the external network. The connection between the intranets relies on the switching ports of the broadband router, which can basically reach the nominal value of 100 megabytes). When the computer needs to access the WEB page, the broadband router will initiate a session request after entering a domain name in the browser. After the website server receives the request, a response will be returned to the broadband router, and a session will be established. If these ten machines open 10 pages at the same time, plus QQ, MSN, download tools, etc., each machine needs to establish 20 pair sessions. Ten machines are 200 pair sessions.
Under this load, ordinary broadband routers should be able to operate normally, but when there are 20 machines, I believe that as many network applications are used, the broadband router will crash. From this example, we can see that in some scenarios with many network applications and machines, home-grade 4-port broadband routers are simply not suitable. Some users buy home with a 4-port broadband router to make a shared gateway for small Internet cafes. It is not surprising that I see that the machine is dead and disconnected.
To sum up, when purchasing a broadband router, we must consider the number of your own carriers and needs, and do not build a small horse and pull a big cart, causing unnecessary trouble and economic losses to ourselves.
2. Improper user settings
We know that among users who use broadband router products, the technical levels are uneven. Many users only know a little about broadband router products and technologies, and do not know much about the settings of most broadband routers. The dealer also told me that many users will not set up the broadband router after buying it, and he will only get it done in a few minutes. Therefore, sometimes you will encounter the problem of improper settings causing the broadband router to be disconnected and crashed.
When encountering such problems, we hope that users can also face them with the correct attitude, carefully check the product instruction manual, and communicate with after-sales service personnel in a timely manner, so as to accurately determine the cause of the crash and disconnection problem. If it is indeed a product quality problem, the manufacturer will also solve the problem well for users. If manufacturers ignore the phenomenon, we will use some media to reflect the problem, arouse the manufacturer's attention, and take a positive attitude. The author believes that the insults online are an irrational manifestation and will not solve the actual problem in the end.
3. Poor access line quality
In addition to the problem of improper user use settings that may cause the broadband router to run abnormally, poor access line quality and viruses are also important factors that cause the broadband router to be disconnected and frozen. From the several broadband installation processes I have experienced, I found that there are great problems with the Internet access lines in China. For example, ADSL lines have very high requirements for the quality of telephone lines. In some old residential buildings, using relatively outdated telephone lines, the quality of the line itself is only barely coping with the basic call functions. In this environment, how can the normal operation of ADSL lines be ensured?
For example, Great Wall Broadband, I installed Great Wall Broadband at home. In order to save costs, the wiring of Long and Width in the building uses a twisted pair of wires to separate two pairs of wires and connect them to the two households. This kind of wiring is a poor quality wiring project. The eight pairs of cables in the wire are used at the same time, which greatly increases the possibility of signal interference. Such broadband lines sometimes cause frequent disconnection.
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