What is the normal range of packet loss rate?

The normal range of packet loss rate cannot generally be greater than 2%. Solutions to high packet loss rates: 1. Physical line failure, contact the service provider to solve the problem; 2. Equipment failure, replace the optical fiber with a new module module; 3. The network is blocked or congested. Check whether fast switching is disabled on the large-traffic egress port. If so, it needs to be reused; 4. Routing error, directly ignore these data packet losses.

#The operating environment of this article: Windows 10 system, dell g3 computer.

Packet loss rate is a key indicator to measure network quality. Generally, the packet loss rate cannot be greater than 2%, and users will not feel much impact. Once it exceeds 10%, the network quality will rapidly deteriorate, and the feeling of network lag will be obvious.

When the flow rate of Gigabit network card is greater than 200Mbps, the packet loss rate is less than 5/10,000; when the flow rate of 100M network card is greater than 60Mbps, the packet loss rate is less than 1/10,000th.

Data is divided into data packets for transmission in the network. Each data packet contains frames that represent data information and provide data routing. When data packets propagate in general media, a small part of them will be lost due to the excessive distance between the two terminals, while most of the data packets will reach the destination terminal.

Packet loss rate refers to the ratio of the number of packets lost during transmission to the number of packets sent, and is usually tested within the throughput range. The packet loss rate is related to the length of the data packet and the frequency of packet transmission. Generally, when the traffic volume of Gigabit network card is greater than 200Mbps, the packet loss rate is less than 0.05%; when the traffic volume of 100Mbps network card is greater than 60Mbps, the packet loss rate is less than 0.1%.

Among the performance indicators for measuring IP network, packet loss rate is one of the three benchmark indicators (packet loss rate, delay, throughput). It is a necessary measurement item to evaluate the performance of a host in the overall network, and its measurement results are also an important reference for measuring the quality of network services provided by the network. The results of network packet loss rate measurement can also provide necessary methods to optimize the network environment on the premise of understanding the current network topology.

Reasons for high packet loss rate:

1. Physical line failure

If the network packet loss is caused by physical line failure, please explain The fault is caused by the line provided by the line supplier. You need to contact the line supplier to solve the problem as soon as possible. Contact your service provider to resolve severe network packet loss.

2. Equipment failure

Equipment mainly includes improper software settings, network equipment interface and fiber optic transceiver failures. This situation will cause the switch port to be in a dead state. Then you can replace your optical fiber module and replace it with a new module.

3. The network is blocked and congested

When the network is not powerful, more packets will be lost on the network when transmitting data through the network. This is usually caused by the router occupying a large amount of resources. . The solution is to use show process cpu and show process mem at this time. Generally, it is found that the IP input process takes up too many resources. Next, you can check whether fast switching is disabled on the high-traffic egress port. If so, you need to use it again. Use the show interfaces and show interfaces switching commands to identify ports where a large number of packets are coming in and out.

4. Routing error

The path error of the router in the network will also cause the data packet to not be transmitted to the host database normally. This situation is normal, and the data lost is also very small. of. So users can ignore these data packet losses, and this is unavoidable.

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