What are the advantages of Layer 3 switches and traditional routers, and in what network environment are they used?

Just as many network devices have many functions of traditional network devices at the same time, just as many broadband routers not only have routing functions, but also provide switch ports and hardware firewalls, but they cannot be equated with switches or firewalls.

The routing function of Layer 3 switch is usually relatively simple, because it mainly faces simple LAN connection, and its main purpose in LAN is to provide fast data exchange function to meet the application characteristics of frequent data exchange in LAN. On the other hand, routers are designed to meet different types of network connections. Although they are also suitable for the connection between local area networks, the routing function is more reflected in the interconnection between different types of networks.

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Precautions for using Layer 3 switches:

Different brands of switches adopt different switching technologies, which are mainly divided into centralized and distributed. The traditional bus switching structure module is centralized, while the modern switching matrix module is distributed.

Due to the increasing amount of audio, video and data information running in the intranet, the requirements for the processing capacity of switches are getting higher and higher. In order to realize high-speed non-blocking switching under the condition of high port density, it is a wise choice to adopt distributed layer 3 switches. Because the bus switching module still can't avoid the conflict in the Ethernet environment, the matrix only avoids the conflict phenomenon when switching ports.

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