Network communication packet Loss +IDC The problem of poor communication between managed servers in computer room

The network port uses the 1000M rate time to appear the network communication loses the packet +idc the computer room managed server communication is not smooth.

Network failure:

Switch port 1000M, network card is 1000M, NIC configuration is normal. You lose the packet at the interval of ping.

The performance is packet loss in network communication, and other network setup failures are excluded.

Failure reason: The use of network cable is not strict quality of the Super Six network cable, cable quality can not reach 1000M.

WORKAROUND: Set the switch port to a 100M port, or replace it with a six-type network cable.

Failure occurs: The network port uses the 1000M rate when network communication loss packet.

Directory:

1. Instance scenario. The network port uses the 1000M rate time to appear the network communication loses the packet

2. Production environment. IDC Room Hosting server communication is not smooth, trouble ping lost Packet

3. Principle analysis mechanism. Why will the network lose the packet situation, the network loses the packet The reason is what?

"Instance scenario production environment"

Some local network users recently reflect the instability of Internet access when the time is broken, combined with this maintenance work to actually talk about solving such problems a little experience.

A simple introduction to the concept of ping lost packet rate

The data in the network is divided into a packet transmission, each packet has a representation of data information and the provision of data routing of the Hardwood. and the packets in the general medium spread is always a small part due to the distance of the two terminals over the Convention lost, most packets will arrive at the destination terminal. The so-called network packet loss rate is the ratio of the packet lost to the total number of packets transmitted. The network loss rate should be controlled in a certain range when normal transmission.

Type ping [url] in cmd, showing that the last line (x loss) is the rate at which you ping the packet at the target address.

Second, understand the unit Internet users Broadband access mode topology (as shown in Figure 1)

Figure 1

Third, the direction of the steps to solve the problem

This time we have to solve the problem is that the user's computer packet loss is serious, and sometimes affect the user's normal internet, the solution to the problem is to track down, meaning that the user's computer from the bottom up to find the problem.

Four, step-by-step to determine the problem lies.

(i) Introduce the reasons for the loss of the user's PC online:

1, the computer network card is damaged;

2, RJ45 Head is damaged, whether the line error;

3, the network cable is broken;