What are the common problems with network testing? A summary of practical solutions

in the digital office and daily Internet scenarios, network cards, high latency, connection interruption and other problems often plague users, and network testing is the core means to investigate such problems. When many people conduct network testing, they will encounter problems such as inaccurate results, wrong tools, and difficult scene adaptation, which not only wastes time, but also fails to accurately locate the root cause of the fault. This article will sort out the high-frequency problems in network testing, and combine practical solutions to help users with different needs to efficiently complete network testing and solve various network hidden dangers.

, how to troubleshoot abnormal network test results?

abnormal network test results are the most common problems, such as the large gap between the speed measurement results and the actual network speed, the abnormal display of packet loss rate, etc., which directly affect the accuracy of fault judgment.

1, testing environment interference

network test, if there are multiple devices occupying bandwidth at the same time, the router signal is blocked, and there are electromagnetic interference sources around, the results will be distorted. At this time, high-bandwidth applications such as downloads and live broadcasts of irrelevant devices should be turned off, and the test equipment should be close to the router. After avoiding interference sources such as microwave ovens and wireless phones, re-conduct the network test to compare the results before and after.

2, test node and time period selection

the node distance of some network testing tools is too far, or the test is tested during the peak period of the network, it will also cause abnormal results. It is recommended to choose the test node matched with the local operator, avoid the peak period of morning and evening work, and take the average after multiple tests, which can effectively improve the credibility of the network test results.

2, how to choose network testing tools reasonably?

there are many types of network testing tools on the market, with different functional focuses, choosing the wrong tool will lead to the inability to accurately cover the testing needs and waste labor costs.

1, basic speed measurement tool selection

if you only need to test bandwidth, delay and other basic indicators, you can choose Speedtest, speed network and other tools, such tools are simple to operate, widely distributed nodes, can quickly complete the basic network test, suitable for ordinary users to troubleshoot network card problems. When using, pay attention to choose the official genuine tool to avoid the result deviation caused by the third-party modified version.

2, professional troubleshooting tool selection

for enterprise-level network troubleshooting, you need to choose professional tools such as Wireshark and PingPlotter, which can realize data packet capture, route tracking, long-term packet loss monitoring and other functions, and can help technicians analyze network test data in depth.

How should network testing be carried out in complex scenarios?

in addition to basic home network scenarios, network testing in complex scenarios such as enterprise offices and outdoor mobile networks faces more special challenges, and conventional testing methods often cannot meet the needs.

1, enterprise multi-end point network testing

enterprise network involves multi-end point and multi-service systems, the network test of a single device cannot reflect the overall network state. Batch testing tools can be used to synchronize the bandwidth, delay and packet loss rate of multiple end points at the same time, focusing on the network link indicators corresponding to the business system, such as the delay requirements of the video conferencing system and the bandwidth stability of the file transfer system.

2, outdoor mobile network test

outdoor mobile network scenarios, large signal fluctuations and uneven base station coverage are the main problems. When conducting network testing, multiple tests are required in different locations and different time periods to record data such as signal strength, download and upload speed, and connection stability. At the same time, combined with the operator's base station coverage map, it is determined whether there is a signal blind spot, which provides a basis for selecting an appropriate mobile network package or optimizing the portable WiFi configuration.

4, how to effectively analyze network test data?

after completing network testing, how to extract effective information from massive data and accurately locate faults is a difficult problem faced by many users. Wrong data analytics will lead to deviation in the direction of troubleshooting.

1 Core indicators focus on

network test data, delay, packet loss rate, jitter is the core indicators, the delay is too high will lead to video card, game operation delay, packet loss rate of more than 1% will affect the quality of file transfer and voice calls, jitter value is too large to indicate poor network stability.

2, Comparative analysis of historical data

the reference value of a single network test data is limited, it is recommended to record the network test data regularly to form a historical data file. When a network problem occurs, compare the current data with the historical normal data, analyze the trend of indicators, and quickly determine whether it is a sudden failure or a problem caused by long-term network deterioration.

To sum up, network testing is a key means to troubleshoot network failures and ensure network stability. It can solve core problems such as abnormal test results, improper tool selection, complex scene adaptation, and data analytics difficulties, which can effectively improve the efficiency and accuracy of network testing. By standardizing the test process, selecting the right test tools, combining the scene adjustment method, and accurately analyzing the data, both ordinary users and technical practitioners can quickly locate network hidden dangers and provide reliable protection for the stable operation of the network.