Detailed introduction to the architecture of the switched LAN (1)

1) architecture of switched LAN

A large LAN is always composed of multiple LAN devices connected through multiple networks, such as bridges, routers, or switches. The requirement for increasing LAN bandwidth must be limited by a fixed bandwidth of 10 Mbps or 16 Mbps over Ethernet or the ring, therefore, in a typical LAN design, the number of different LAN segments is growing rapidly. As a technology that can increase LAN capacity by adding CIDR blocks, the exchange lan has quickly established its position. This is because LAN switches can provide high-quality packet transmission services in multiple CIDR blocks at a low cost. As in the past, vrouters have replaced the interconnection bridges in a large number as the interconnection devices connecting LAN segments, while vswitches tend to replace vrouters in LAN. But how long will this trend last? Is it possible that routers are no longer needed in the lan? There is no doubt that the vro must provide physical connection and protocol conversion between the switched LAN. However, when we seek answers to the following questions, the difference arises:

What is the role of routing selection in a switched lan?

What is the optimal balance between exchange and Route Selection in a switched lan?

What is the best way to physically connect a vswitch to a vro in a LAN?

The following discussion will give reasonable answers to these questions.