Difference between SVI and subinterface

When it comes to understanding the difference between an SVI (switched virtual interface) and a subinterface, it is important to understand how each of these types of interfaces work and the advantages and disadvantages of each.

An SVI is a virtual interface that is created on a Layer 3 switch. This type of interface is used to connect the switch to the rest of the network. It works by providing a gateway or bridge between the physical ports of the switch and the networks that are connected to it. An SVI is a Layer 3 interface that is used to forward data between networks. This type of interface does not have any physical ports associated with it, so it is virtual and can only be managed from the switch’s command line interface.

A subinterface is a type of virtual interface that is created on a router. Subinterfaces are used to break up a single physical interface into multiple logical interfaces. This is done in order to separate traffic from one part of the network from another part. A subinterface is a Layer 3 interface that is used to forward data between networks. It has physical ports associated with it, so it can be managed from the router’s command line interface as well as from the switch’s command line interface.

The main difference between an SVI and a subinterface is that an SVI is used to connect the switch to the network, while a subinterface is used to separate traffic from one part of the network from another. An SVI is a virtual interface and does not have any physical ports associated with it, whereas a subinterface has physical ports associated with it. Additionally, an SVI is managed from the switch’s command line interface, whereas a subinterface is managed from the router’s command line interface.

When deciding between an SVI and a subinterface, it is important to consider the needs of the network. An SVI is ideal for networks that require a simple connection between the switch and the rest of the network. However, if the network requires more complex traffic separation between different parts of the network, then a subinterface is the better choice.

In summary, an SVI is a virtual interface that is created on a Layer 3 switch to provide a gateway or bridge between the physical ports of the switch and the networks that are connected to it. While a subinterface is a type of virtual interface that is created on a router to break up a single physical interface into multiple logical interfaces. The main difference between an SVI and a subinterface is that an SVI is used to connect the switch to the network, while a subinterface is used to separate traffic from one part of the network from another. When deciding which type of interface to use, it is important to consider the needs of the network and determine which type of interface is best suited for the task.