High Ping packet loss rate: Fault Caused by switch port faults (1)

Recently, some Internet users in the organization reported that the Network was interrupted when the network was unstable. In light of the actual repair work, I would like to explain some experiences in solving such problems.

I. briefly introduces the Ping packet loss rate Concept

Data is divided into data packets for transmission in the network. Each data packet contains information indicating the data and a token that provides data routing. In general, data packets are transmitted in a small part because the distance between the two terminals is too large to be lost, and most data packets reach the destination terminal. the so-called network packet loss rate is the ratio of the packet loss part to the total number of transmitted packets. during normal transmission, the network packet loss rate should be controlled within a certain range.

In cmd, type ping [url] and the last line (x % loss) is the packet loss rate of the target address ping package.

2. Understand the topology of internet users' broadband access methods (1)

▲Figure 1

Iii. troubleshooting steps

The problem we want to solve this time is that the user's computer packet loss is serious, and sometimes the user's normal internet access is affected. The solution is to find the problem from the bottom up by the user's computer.

4. Identify the problem step by step.

(1) Reasons for user PC Packet Loss during Internet access:

1. Whether the computer Nic is damaged;

2. Whether the RJ45 header is damaged or the line is incorrect;

3. Whether the network cable is damaged;

4. device faults;

Next, use the user's computer and Type ipconfig in cmd to display 2.

▲Figure 2

After obtaining the Gateway of the network (Default Gateway), ping 192.168.0.2-t to obtain the packet loss rate greater than 3.