Prerequisites: describes how to connect vswitch ports in cascade mode.

A must-have: Explain how vswitch ports are connected in cascade mode. With the advent of the 3G era, vswitch port cascade began to attract everyone's attention. The powerful offensive showed their determination to gain traction, let's get to know! It looks pale, but everything is quietly changing.

A vswitch is the most basic network connection device. It generally does not require any software configuration to use a hardware-only device. The connection between a single vswitch and the network can be mastered by readers. This article, in combination with the legend, describes the connection issues when multiple switches are used in the network at the same time. There are two Connection Methods for multiple switches: Switch Port cascade and stacking. The following describes the implementation principle and detailed connection process for the two connection methods.

Vswitch port Cascade

This is the most commonly used method for connecting multiple vswitches. It is connected through the cascade ports UpLink on the vswitch. 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. Cascade is divided into the following two types:

Use common switch port Cascade

The so-called common port is through a common port of the switch, such as the RJ-45 port) to connect. Note that the twisted pair wires connected to the twisted pair must be reversed, that is, the two ends of the twisted pair must be paired with the patch cords between the 1-3 and 2-6 ). The connection Diagram 1 is shown.

Figure 1 vswitch port Cascade

Use Uplink switch port Cascade

A Uplink port is included next to all vswitch port cascaded ports, as shown in figure 2. This port is dedicated for Uplink connections. You only need to connect the port to any port other than the Uplink port on other switches through the straight-through twisted pair, rather than Uplink ports ).

Figure 2Use Uplink switch port Cascade

The connection diagram is shown in figure 3.

Figure 3 common switch port Cascade

Switch Stack

This connection mode is mainly used when large networks require large ports. The stacking of switches is the quickest and most convenient way to expand ports, and the stacked bandwidth is dozens of times the cascade rate 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.

It connects directly to the "DOWN" Stack port of another switch from the "UP" Switch Port cascade of one switch through a dedicated connection cable provided by the manufacturer. All switches in the stack can be managed as a whole switch. Its connection 4 is shown in.

Figure 4 vswitch port cascade Stack

Tip: The type and distance of a vswitch must be limited. First, the stack switch must support the switch port cascade stack. In addition, because the switch port cascade stack connection cables provided by the manufacturer are generally around 1 m, therefore, you can only use the switch port cascade function within a very short distance.

Vswitch port cascade: Based on the above two methods, the cascade Implementation of vswitches is simple, with only one common twisted pair cable, which saves costs and is basically not limited by distance; the switch port cascade stack method has a relatively large investment and can only be connected within a short distance, making it difficult to implement it.

However, we must also realize that the switch port cascade stacking method has better performance than the cascade method, and the signal is not easy to failure. In addition, through stacking, We Can centrally manage multiple switches, this greatly reduces the management workload. If cascade is required, you 'd better choose the Uplink switch port cascade connection mode. This ensures the signal strength to the maximum extent. If the connection is between common ports, the network signal will be seriously damaged. Okay. Based on the above introduction, I believe that you will find a suitable connection method. Hurry up!