Introduction powerful layer-3 switches

The layer-3 switch technology allows the shared and dedicated LAN segments to adjust the bandwidth. The full duplex of the switch means that the switch can receive data while sending data. I hope this article will help you.

It should be said that there are many things worth learning about vswitches. Here we mainly introduce the structure and networking methods of vswitches. Currently, the network is more and more widely used, and vswitches play an increasingly important role as a bond in the network. Simply put, a vswitch is connected to a user's computer.

Complete data exchange between computers. In terms of complexity, for the positions of switches in the entire network, some high-level switches, such as layer-3 switches and network-managed products, are not as simple as the switch structure. Generally, A common switch only works on the data link layer, while a router works on the network layer.

A powerful layer-3 switch can work at both the data link layer and the network layer, and forward data packets based on the MAC address or IP address. However, it should be noted that the layer-3 Switch cannot completely replace the router, because it is mainly used for communication between two VLANs in different subnets, rather than for the complex path selection of data transmission.

The management level supported by a layer-3 Switch reflects the manageability and operability of the device. Vswitches with network management function can monitor the traffic of each port, set the speed of each port, and close/open the port connection. By monitoring vswitch ports, you can distinguish network service traffic and quickly define network faults, improving network manageability.

This is an encapsulation technology. It is a point-to-point link. both ends of the link can be a vswitch, A vswitch, A vro, or a host, a vswitch, or a vro. Based on the port aggregation (Trunk) function, allows a vswitch and vswitch, vswitch and vro, and host and vswitch or vro to communicate with each other through two or more ports simultaneously to provide higher bandwidth and higher throughput, greatly providing the overall network capability.

This is an encapsulation technology. It is a point-to-point link. both ends of the link can be a vswitch, A vswitch, A vro, or a host, a vswitch, or a vro. Based on the port aggregation (Trunk) function, allows a vswitch and vswitch, a layer-3 Switch and vro, And a host to communicate with a vswitch or vro through two or more ports for simultaneous transmission to provide higher bandwidth and higher throughput, greatly providing the overall network capability.

Understanding the layer-3 switch structure is the most common networking method. It is connected through UpLink on the switch. Note that a vswitch cannot have unlimited cascade operations. Cascade operations by more than a certain number of vswitches will eventually lead to a broadcast storm, leading to a severe decline in network performance.

We have come into contact with the characteristics of port aggregation before the port aggregation mode. This mode is equivalent to cascade multiple ports at the same time. It provides higher interconnection bandwidth and line redundancy, make the network reliable. The stack mode is the fastest and most convenient way to expand ports.

The stacked bandwidth is dozens of times the speed of a single switch port. However, not all switches support stacking, depending on the brand and model of the switch. Dedicated stacking cables and stack modules are also required; note that the switches in the same stack must be of the same brand.

As an important network connection device, vswitches are frequently used. For home users, the complex application is the cascade structure of vswitches, while advanced applications such as layer-3 routing and stack are usually used in enterprises.

The full duplex of a switch means that the switch can receive data while sending data. The two are synchronized, as if we call each other and can hear the other party's voice while talking. All current vswitches support full duplex. The advantage of full duplex is low latency and high speed.

When talking about full duplex, we can't help but mention another concept closely related to it, that is, "Half Duplex". The so-called half duplex refers to only one action in a period of time. For example, a narrow road, with only one vehicle passing through.

When there are currently two vehicles on the road, in this case, only one vehicle is allowed to pass first, and then the other one is driving again. This example shows the principle of half duplex. Early walkie talkie and early hub devices are half duplex products. With the continuous advancement of technology, half duplex will gradually exit the stage of history.

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