How to deal with the problem Wang Suman
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Users questions: How to deal with the problem
Experts answer: Wang Suman friends Hello! Following Wang Suman several reasons: First, the network you want to connect their own problems, the target site where insufficient bandwidth or server load is too large. Approach is simple, make another time or another to a target site. Second, cable problem causes Slow speeds we know from the four pairs of twisted pair wire according to strict rules and closely twisted together, used to reduce crosstalk and background noise. Meanwhile, in the T568A and T568B standards standards using only the four twisted pair lines 1,2 and 3,6, which is used to send 1,2, 3, 6 for receiving, and must come from a 1,2-around pair, 3,6 must come from a round right. The only way to avoid crosstalk as possible to ensure the data transfer. I found in practice is not the correct standard (T586A, T586B) produced by cable, will be dangerous. Showed : A use case is started very slow speeds; the other case is the normal starting speeds, but after a period of time, speed slow. The latter case, the performance of the desktop is very obvious, but check with the laptop but showed normal speeds. For this problem I discovered after years of practice, because Not produced the correct standard cable slow speeds due to the same time and also the quality of the card. General performance of the network card desktop computer than notebook computers, therefore, with the exchange troubleshooting, the use of laptop computers and can not rule out the normal testing speeds do not follow the standard cable making this a problem. We are asking all by T586A, T586B standard network cable to suppress, in the detection of failure can not be replaced with laptop computers to desktop computers. Third, there is a network loop leading to slower speeds when the network nodes involved are not many, the structure is not very complicated, such phenomena seldom occurred . However, in more complex networks, often redundant backup line, such as when accidentally connected to constitute a loop. Such as network cable to your computer from the network center of a room, and then received a computer from the computer compartment of a room. At the same time there are a backup from the network center line directly connected to the computer compartment, a few lines if it , Turn, constitutes a loop, data packets will continue to send and check data to affect the overall network speed. This situation is difficult to find. To prevent that from happening, ask us to lay cable in a certain time to develop good habits: cable marked with clear labels, there are alternate routes of local records to do a good job. When Suspected to have such a failure occurs, generally use the partition section stepwise approach. 4, the network device hardware failure caused by broadcast storms caused by slower speeds as the main means unknown device was found, broadcast in the network plays a very important role. However, with the increase in the number of network computers and radio Dramatically increase the number of packets. When the number of broadcast packets to 30%, the network transmission efficiency will be significantly decreased. When the network card or network equipment is damaged, we will continue to send broadcast packets, resulting in broadcast storms, so that network traffic paralyzed. Therefore, when the network device hardware failure will lead to speeds have changed Slow. When such a failure is suspected, the first replacement method can be used to replace the hub or switch assembly line equipment failures excluded. If the equipment does not malfunction, turn off the power after the hub or switch, DOS used under the "Ping" command on each of the tests related to the computer to find the faulty computer card , Replacement of the card be able to resume normal speeds. Cards, hubs and switches are the most prone to failure caused by slow device speeds. 5, the network bottlenecks leading to the formation of a port speeds slower in fact, the router WAN port and LAN ports, switch ports, hub ports and the server network Cards and so may become network bottlenecks. When the speeds slow down, we can use the peak hours in the network, using network management software, see the router, switch, server port of data traffic; also be used Netstat command data traffic statistics of each port. Accordingly confirm the location of bottlenecks in network data flow, design Method to increase bandwidth. Specific many, such as Genghuan server card Wei 100M or 1000M, install multiple network cards, divided into multiple VLAN, router is configured to increase the bandwidth and so on, can effectively alleviate the network bottlenecks that can maximize data transmission speeds. 6, worm virus Slow speeds caused by disseminated through E-mail worm virus on the network speed of more and more serious, great harm. This virus causes the infected users as long as the Internet to keep out a mail, select the user's personal computer virus, random document attached to the user's address book of random machine
Experts answer: Wang Suman friends Hello! Following Wang Suman several reasons: First, the network you want to connect their own problems, the target site where insufficient bandwidth or server load is too large. Approach is simple, make another time or another to a target site. Second, cable problem causes Slow speeds we know from the four pairs of twisted pair wire according to strict rules and closely twisted together, used to reduce crosstalk and background noise. Meanwhile, in the T568A and T568B standards standards using only the four twisted pair lines 1,2 and 3,6, which is used to send 1,2, 3, 6 for receiving, and must come from a 1,2-around pair, 3,6 must come from a round right. The only way to avoid crosstalk as possible to ensure the data transfer. I found in practice is not the correct standard (T586A, T586B) produced by cable, will be dangerous. Showed : A use case is started very slow speeds; the other case is the normal starting speeds, but after a period of time, speed slow. The latter case, the performance of the desktop is very obvious, but check with the laptop but showed normal speeds. For this problem I discovered after years of practice, because Not produced the correct standard cable slow speeds due to the same time and also the quality of the card. General performance of the network card desktop computer than notebook computers, therefore, with the exchange troubleshooting, the use of laptop computers and can not rule out the normal testing speeds do not follow the standard cable making this a problem. We are asking all by T586A, T586B standard network cable to suppress, in the detection of failure can not be replaced with laptop computers to desktop computers. Third, there is a network loop leading to slower speeds when the network nodes involved are not many, the structure is not very complicated, such phenomena seldom occurred . However, in more complex networks, often redundant backup line, such as when accidentally connected to constitute a loop. Such as network cable to your computer from the network center of a room, and then received a computer from the computer compartment of a room. At the same time there are a backup from the network center line directly connected to the computer compartment, a few lines if it , Turn, constitutes a loop, data packets will continue to send and check data to affect the overall network speed. This situation is difficult to find. To prevent that from happening, ask us to lay cable in a certain time to develop good habits: cable marked with clear labels, there are alternate routes of local records to do a good job. When Suspected to have such a failure occurs, generally use the partition section stepwise approach. 4, the network device hardware failure caused by broadcast storms caused by slower speeds as the main means unknown device was found, broadcast in the network plays a very important role. However, with the increase in the number of network computers and radio Dramatically increase the number of packets. When the number of broadcast packets to 30%, the network transmission efficiency will be significantly decreased. When the network card or network equipment is damaged, we will continue to send broadcast packets, resulting in broadcast storms, so that network traffic paralyzed. Therefore, when the network device hardware failure will lead to speeds have changed Slow. When such a failure is suspected, the first replacement method can be used to replace the hub or switch assembly line equipment failures excluded. If the equipment does not malfunction, turn off the power after the hub or switch, DOS used under the "Ping" command on each of the tests related to the computer to find the faulty computer card , Replacement of the card be able to resume normal speeds. Cards, hubs and switches are the most prone to failure caused by slow device speeds. 5, the network bottlenecks leading to the formation of a port speeds slower in fact, the router WAN port and LAN ports, switch ports, hub ports and the server network Cards and so may become network bottlenecks. When the speeds slow down, we can use the peak hours in the network, using network management software, see the router, switch, server port of data traffic; also be used Netstat command data traffic statistics of each port. Accordingly confirm the location of bottlenecks in network data flow, design Method to increase bandwidth. Specific many, such as Genghuan server card Wei 100M or 1000M, install multiple network cards, divided into multiple VLAN, router is configured to increase the bandwidth and so on, can effectively alleviate the network bottlenecks that can maximize data transmission speeds. 6, worm virus Slow speeds caused by disseminated through E-mail worm virus on the network speed of more and more serious, great harm. This virus causes the infected users as long as the Internet to keep out a mail, select the user's personal computer virus, random document attached to the user's address book of random machine
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