Discussion on the structure of high-rise switch network

To see this topic, perhaps readers are dismissive: What are the networking options for the switch? It's all about connecting it to the user's computer. Of course, that is for switches in the entire network location, some high-level switches such as three-tier exchange, network management-type products, in the networking structure is not so simple.

Learn about the fresh features of the switch

Three-tier routing

Typically, a typical switch works only on the data link layer, and the router works on the network layer. A powerful three-tier switch can work at the data link layer and the network layer at the same time and forward packets based on the MAC address or IP address. However, it is important to note that the three-tier switch is not a complete replacement for routers, because it is primarily designed to communicate with VLANs in two different subnets, rather than a complex path selection for data transmission.

Network management function

The level of management supported by a single switch reflects the manageability and operability of the device. The switch with network management function can monitor the traffic of each port, set the rate of each port, and turn off/open the port connection. By monitoring the switch ports, it is easy to distinguish the traffic of the network and to define the network fault quickly, and improve the manageability of the network.

Port Aggregation

This is a packaging technology that is a point-to-point link where both ends of the link can be switches, switches and routers, and can be hosts and switches or routers. Port pooling (Trunk) enables switches and switches, switches and routers, hosts and switches, and routers to connect simultaneously with two or more ports for simultaneous transmission to provide higher bandwidth and throughput, providing a significant overall network capability.

Understanding the structure of switch networking

Cascading mode

This is the most commonly used method of networking, which is connected through a cascade port (uplink) on the switch. It should be noted that the switch can not be unlimited cascade, more than a certain number of switches cascading, resulting in a broadcast storm, resulting in severe network performance degradation. The schematic diagram of the structure is shown below.

Port Aggregation method

We have been exposed to the characteristics of port aggregation, which is equivalent to using multiple ports at the same time Cascade, it provides a higher bandwidth and line redundancy, so that the network has a certain degree of reliability. The schematic diagram of the structure is shown below.

Stacking mode

The switch stack is the fastest and most convenient way to extend the port, with a tiered bandwidth of dozens of times times the rate of a single switch port. However, not all switches support stacking, depending on the brand of the switch, whether the model supports stacking, and the use of specialized tiered cabling and stacking modules, and finally the need to note that the switches in the same stack must be the same brand. The schematic diagram of the structure is shown below.

Layered mode

This method is generally used in the complex network structure, according to the function can be divided into: Access layer, convergence layer, core layer. The schematic diagram of the structure is shown below.

Postscript

As an important connection device of the network, the switch is quite frequent in actual use. For ordinary home users, the more complex application is the cascade structure of the switch, and three-tier routing, stacking and other advanced applications generally in the enterprise applications.