1. Problems with the network itself. The server where the target website you want to connect to has insufficient bandwidth or is overloaded. The solution is very simple, please change the time period or change the target website.
2. The network cable problem causes the network speed to slow down.
3. The existence of loops in the network causes the network speed to slow down.
4. The network equipment hardware failure causes The broadcast storm caused the network speed to slow down.
5. A certain port in the network formed a bottleneck, causing the network speed to slow down.
6. The influence of worms caused the network speed to slow down.
7. Excessive use of firewalls
8. Insufficient system resources. You may have loaded too many applications running in the background. Please load software appropriately or delete useless programs. and files to free up resources to achieve the purpose of increasing network speed.
The other reason is that you can’t increase your internet speed without spending money, which I won’t mention here.
Seven new ideas for improving network speed
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How to maximize the speed and performance of the network has always been a question for enterprise network managers. issues of concern. This article will focus on how to further improve the speed and performance of the network and give seven suggestions from industry veterans and network experts.
Using jumbo packets
Using jumbo packet technology can improve network performance. Switches and network interface cards that support jumbo packets can handle maximum lengths exceeding the IEEE standard ( 1.5k bits), some devices support data packets longer than 9k bits, but there is no unified standard for jumbo packet length. Industry insiders point out that for high-speed Ethernet networks such as Gigabit and 10G networks, it is more effective to use jumbo packet technology. Many manufacturers, including 3Com, Cisco, Extreme Networks, etc., have already provided products that support this technology. Networks using this technology must set the switches to jumbo packet mode and must use products from the same manufacturer, otherwise problems such as packet loss or fragmentation may occur. At the same time, experts suggest that the use of jumbo packet technology should be limited, such as using it only on network connections such as server-to-server file transfers or backup work.
Check network connections
Network performance may be degraded due to simple physical connection problems, but network administrators cannot ignore these problems because damaged cables or connectors may only cause The loss of data packets does not completely paralyze the network, so such problems are more subtle. You can use a network sniffer to spot unusual packet retransmissions, which are often a sign of cable problems. Environmental factors can also cause network performance to degrade. For example, cables near elevators or heating systems can be affected by electromagnetic fields when transmitting data. Experts recommend adding protective shells to cables in such an environment, and it is best to upgrade all cables in the network to Category 5 or Category 6 cables.
Use full-duplex mode
Performance is highest when the network cards at both ends of the network connection are in full-duplex mode. However, the network card on the PC can easily be set by the user accidentally or intentionally through software. It is half-duplex mode. Monitoring the connection speed is important to find out whether the duplex settings of the two ports match. Experts recommend using a piece of software called Multi-router Traffic Grapher to monitor the performance of your network connection to make sure both ends have the full-duplex setting turned on.
Use Layer 3 switching
One way to improve network performance is to implement Layer 3 switching on the switch connected to the desktop machine. Many switches provide the IP routing capabilities of LAN edge switches and QoS based on Layer 3 switching. With Layer 3 switching capabilities, the switch will not send every data packet to the router. For example, if two nodes in different virtual LANs are connected to the same switch, the Layer 3 edge switch can perform communication services between the two nodes. routing.
Adding routing control
Implementing routing control or routing optimization at sites with more than one Internet connection is a configuration called multi-homing (Multi-Homing). The site's routing control device is connected to the network as BGP (Border Gateway Protocol). BGP is a routing mechanism used to determine which Internet connection to use. This selection is based on which connection will use the fewest router hops to reach the destination. Routing control can select the best route based on the comprehensive factors of performance and price, which is even better than BGP.
Using packet shaping
The packet shaper puts network communication services into queues according to their importance. For example, critical applications and delay-sensitive applications will receive more High priority. This can be achieved by limiting the bandwidth used by certain applications or blocking certain applications.
Use compression technology
Place compression equipment on sites connected to both ends of the WAN to scan communication services. The principle is to replace repeated patterns with shorter patterns to reduce The number of bytes that need to be transmitted over the WAN so that the limited bandwidth can be more fully utilized. In addition, using the acceleration program of the SSL layer, the transmission of Internet SSL can be accelerated by reducing the number of bytes of transmitted web page content through compression technology and removing the data not needed to reconstruct the web page. It can also reduce the number of TCP connection requests to be processed by the application server. number.
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