Wire speed slow several reasons

A, network own problem

You want to connect target dell inspiron 1525 series laptop cpu cooling fan web site is located server bandwidth or inadequate or excessive load. Processing way is very simple, please change the time again or change the target web site.

Second, the screen wire to wire speed slow

We know, twisted pair consists of four to line according to strict rules tightly twisted and together, to reduce crosstalk and the influence of the background noise. At the same time, in T568A standards and T568B standard using only the twisted pair of 1, 2, and 3, 6 four line, among them, used to send 1, 2, 3, 6 for receiving, and 1, 2 must be from a wound to, 3, 6 must come from a wound to. Only in this way, can maximum limit avoids crosstalk, guarantee the data transmission. I am in the discovery in practice do not press the right standard (T586A, T586B) of the production line, there are a lot of hidden trouble. Performance: a situation is started using wire speed is slow; Another kind of circumstance is began to wire speed normal, but after a period of time, wire speed slow. After a kind of circumstance in the desktop computer performance is very obvious, but with a laptop computer inspection wire speed but performance is normal. For this problem I found after many years practice, because you did not press the right standard made by line of wire speed slow also at the same time and the quality of the network card about. General desk computer interfaces as the performance of the notebook computer, therefore, in exchange method debugging, use notebook computer asus u50f series laptop cpu fan detection wire speed normal and can't rule out according to the standard reticle don't make this a problem exists. We now requires all presses the T586A, T586B standard to suppress line, in the test failure can't all laptops instead of desktop computer.

Third, existing in the network circuit leads to wire speed slow

When the network involved in the node number is not many, the structure is not very complex, this kind of phenomenon is common seldom occurs. But in some more complex network, often have extra spare circuit, such as inadvertently even when the constitutes a loop. Such as line from the network center received computer one room, again from the computer one room received computer 2 rooms. At the same time from the network center and have a spare circuit connected to the computer two room, if the lines at the same time on, is a circuit, the packet will continue to send and check data, thus affecting the whole wire speed. This kind of situation is difficult to find. To avoid this kind of circumstance happening, we need in laying the line must develop good habits: line a clear label,asus g72gx series laptop cpu fan a spare circuit place to do records. When suspected such fault occurs, generally USES subarea-subsection gradually eliminating methods.

Four, network equipment hardware fault caused by the broadcast storm and lead to wire speed slow

As the main means to find the unknown equipment, broadcast in the network plays a very important role. However, with the increase of computer quantity in network, the number of broadcast packets could sharply increase. When the number of broadcast packets reached 30%, network transmission efficiency will be decreased obviously. When nic or network equipment damage, will keep sending broadcast packets, leading to the broadcast storm, so that network communication paralysed. Therefore, when the network equipment hardware failure can also cause wire speed slow. When suspected of such failure, you can use displacement method to replace hub or switch to eliminate set line equipment failure. If these equipment without fault, turn off the hub or switch power supply, under DOS with "Ping" command to one involved in the computer test, find a fault nic computer acer aspire 5738 series laptop fan , change new nic can restore normal speeds. Nic, hub and exchange is the most prone to failure cause wire speed slow equipment.

Five, the network a port to form the bottleneck lead to wire speed slow

In fact, the router wan ports and LAN port, switch port, hub port and server nic may become network bottleneck. When the wire speed slow, we can use in the network peak time, the use of network management software view routers, switches, server port data flow; Also can use Netstat order statistics each port data flow. Hereby confirms network data flow bottleneck position, try to increase the bandwidth. The specific method are many, such as replacement server nic for 100 m or 1000 m, install multiple network card and the division of more than one VLAN, change the router configuration to increase bandwidth to wait, can effectively alleviate network bottleneck, can maximize data transmission speed.

Six, the influence of worm virus to wire speed slow

Through the E-mail sends out worms virus on the acer aspire 1360 laptop fan influence of network speed is more and more serious, great harmfulness. This virus causes infected users as long as the Internet is kept to outgoing mail, virus select users personal computer of random document attached to the users of the machine address book random address on the post. Hundreds of thousands of this kind of junk mail some lined up outside to send, some and batch by batch returned to pile on the server. Cause individual backbone Internet appear obvious congestion, wire speed significantly slow, make the LAN to paralysis. Therefore, we must upgrade anti-virus software used in time, The computer will timely upgrades, installation system patch, and at the same time, discharge unnecessary service, shut down unnecessary port, in order to improve the reliability and safety of the system.

Seven, firewall use too much
The firewall can also lead to excessive use of network speed slow, treatment method need not say more, discharge the unnecessary firewall only retains a powerful enough to.

Eight, the system resources

You may loading too much use program runs in the background, please reasonable loading software or delete useless acer aspire 3620 series laptop fan programs and documents, the resources empty out, in order to achieve the purpose of improving network speed.





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