Allows you to easily complete vswitch bandwidth settings

Understanding about vswitch bandwidth settings is very helpful, especially for network administrators, which can effectively improve network performance. For network users, network communication speed and network bandwidth are the two most important parameters. The speed directly determines the time for downloading and uploading data, thus directly affecting the network access efficiency such as page browsing; bandwidth is another measure of enterprise network usage. It is short for "band width.

In a sense, the amount of bandwidth directly determines the network access efficiency. In fact, for users, the bandwidth setting and speed of a vswitch can be assigned an equal sign, which is a parameter to measure the network transmission efficiency. But do you know the difference between speed and bandwidth on a vswitch? When do we need to configure the port speed? When will it be more appropriate for vswitch bandwidth settings? Today, I will introduce the speed and bandwidth differences on vswitches from my own experience to readers of IT168.

1. Identify the speed and bandwidth from the instruction settings:

Readers who have experience in configuring route switching know that we often use two parameters when configuring vswitches. bandwith represents bandwidth, and speed represents speed. In actual configuration, we can use speed 100 to set the port speed to 2000 MB, and use bandwidth to set a port to 2 MB.

2. Differences between speed and bandwidth on vswitches:

As mentioned above, we can configure the speed and bandwidth of the port separately through speed and bandwidth. What if we want to set the speed of a port to 100000 MB, can we use bandwidth? Or can I use speed 2 to specify the bandwidth limit of a port to 2 MB?

I believe that many readers have the same questions as me. In fact, the author's tests have found that no matter whether we use speed 100 or bandwidth 100000, in the end, the transmission speed of the port will not exceed 100 MB, which is equivalent to the speed limit. The two commands have the same effect. Similarly, when speed 2 or bandwidth 2000 is used, the switch bandwidth is set to 2 M, and the network traffic speed will not exceed this limit.
Since both commands can set the network speed, are their functions the same? Or can they be used at will? The answer is no. They are different in some functions, which is why the routing switch manufacturer sets two commands for speed. In some cases, we must use the bandwidth command to set the port speed. In other cases, we need to use the speed command to limit the port transmission speed.

1) application of dynamic routing protocol:

Experienced network administrators know the importance of routing protocols in enterprise network communication. Through dynamic routing protocols, we can achieve automatic addressing of network packets, even if a network line fails, you can use the dynamic routing protocol to quickly find another new path for data transmission. Dynamic Routing Protocols greatly simplify the workload of network management and increase the flexibility in practical applications.

However, the "best" Path of the dynamic routing protocol is usually calculated by some algorithm. The possible considerations include load, reliability, MTU, latency, bandwidth, and so on. The bandwidth is set by the bandwidth command. To put it bluntly, we can use bandwidth to reduce the bandwidth value of a line when we think the transmission performance of a line is poor, so that the dynamic routing protocol does not give priority to this line when selecting a path.

The bandwidth setting command is used to modify the default bandwidth values of each line on each port in a wide range of applications. With this command, we can flexibly manage the Intranet, enables data packets to be transmitted in a more reliable path. Setting the speed command to limit the port transmission speed does not affect the bandwidth value, and naturally does not affect the path selection. Therefore, for the path selection of dynamic routing protocol, bandwidth can be used to modify the path priority, and speed setting does not affect the selection of Dynamic Routing Protocol paths.

2) QoS applications:

As we all know, QoS service quality functions can help us to optimize Intranet traffic. Of course, there are many QoS judgment criteria, such as optimizing network application network service priorities and IP addresses, the MAC address and other information are prioritized, and the bandwidth value is also used to distinguish the service quality.

Therefore, in QoS applications, the switch bandwidth settings come in handy. We can use the bandwidth switch bandwidth settings command to configure the bandwidth value of a port, in this way, the priority of QoS is adjusted to better manage intranet traffic.

Iii. Summary:

To sum up, although the bandwidth setting and speed setting commands of the bandwidth switch are aimed at the actual transmission speed limit of the port, the significance of these commands is very similar in reality, however, in the logic layer, the bandwidth setting is more significant. It not only represents the interface bandwidth speed, but also becomes an important criterion for measuring the link selection of dynamic routing lines and QoS service quality, in the logic layer, bandwidth is more meaningful than speed setting. We can manage the Intranet more flexibly through vswitch bandwidth settings.