(Now, in the corporate LAN, the most common way to access the Internet is to apply for a broadband, and then connect to the router through the Internet cat, then connect the router to the switch, and connect all computers in the LAN to the switch to access the Internet. This makes it inevitable that the network bandwidth will be unevenly distributed and the LAN will compete for network speed in the environment of the enterprise LAN. Especially at that time, some popular and entertainment uses emerged in an endless stream, such as P2P downloading, watching videos online, playing online games, etc., which consumed a lot of LAN network speed, and it was extremely simple to slow down the overall LAN network speed and the unit network speed was very slow. situation. Therefore, one of the most important tasks of enterprise network administrators is to limit the network speed of the local area network, control the computer traffic, and avoid the situation that a single computer occupies too much bandwidth and affects the overall network speed of the local area network.)
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