Seven tricks to speed up the LAN

Find the Black Hand behind the slow speed of the LAN

It may be easier to troubleshoot network disconnection, but the network is accessible and the speed may be slow. The reasons for slow LAN speed are as follows:
Broadcast storms slow down the network speed. All devices in the same network are located in the same broadcast domain, and all broadcast information is broadcast to each port of the network. At the same time, only one broadcast information can be transmitted over the network. The number of computers in the network is increasing, the number of broadcast packets is also increasing sharply, and the broadcast time is also increasing, when the number of broadcast packets reaches a certain level, the normal information transmission on the network will be affected, resulting in a significant reduction in the network transmission efficiency and even network paralysis. In addition, some popular network viruses and hacker software attacks will also cause a broadcast storm.

Network speed slows down due to network equipment and equipment faults. If the computer's network adapter or other network devices are physically damaged, the damaged network adapter will continuously send a large number of packets to the switch, many of which are invalid, A large number of useless data packets may cause information transmission delay and network congestion, resulting in broadcast storms and slow lan network speeds. This can be used as a replacement method to eliminate network device faults. The NIC, hub, and switch are the most prone devices.

Note that the network cable can also slow down the speed. Many companies do not deliberately consider the quality of Network cables when they are networking. They think that the network quality is good or bad, and there is no difference in speed. However, in a m network, the transmission speed of the miscellaneous Network cables and some famous network cables is significantly different. The production of the crystal head is also exquisite, many friends think that as long as the order of the crystal heads at both ends of the line is the same, this understanding is also wrong. Twisted Pair wires are closely and reasonably wound together by four pairs of wires. Crystal headers made according to T586A and T586B can avoid crosstalk to the maximum extent and ensure fast and stable data transmission. If you do not follow this standard, it may be normal when you start to use it. After a while, the network speed will slow down.

The network speed slows down due to the network loop. In a locally replicated LAN, some network administrators may use a backup line. However, the standby line is treated as a primary line connection, which inadvertently leads to a network loop. In the network loop, data packets are constantly sent and verified, which seriously affects the overall network speed. Labeling on the network cable can reduce the occurrence of such a fault during networking, and also help to eliminate network faults. This type of fault can be identified by partitioning and segmentation.

Network speed slows down due to virus impact. Nowadays, the negative impact of viruses on networks cannot be underestimated. Due to improper defense, some computers in the LAN will be infected with viruses, and some worms will constantly send viruses to other computers in the LAN, there are also some viruses that can be randomly selected to send documents attached to the address book at the mail address, thousands of junk mail queues to send out, some emails are blocked and finally returned to the server, causing obvious network congestion and sharp slowdown. This can enhance network security by patching, disabling ports, and timely upgrading anti-virus software.

In addition, port bottlenecks of some devices in the network can also lead to slow network speeds. This can increase network bandwidth by installing multiple NICs, dividing multiple VLANs, and changing router configurations, this effectively relieves network bottlenecks and increases data transmission speeds. If your enterprise uses a wireless LAN, improper placement of the wireless router may cause weak signals and slow down the lan network speed.

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