Introduction to layer-3 switches based on MAC and VLAN

This section describes layer-3 switches based on MAC and VLAN. You may have heard of layer-3 switches. The following section describes the layer-3 switches, how can we make proper use of layer-3 switches to bring us convenience? The following is a detailed introduction.

A layer-3 Switch is also called a Switching Hub. It is a MAC (NIC-based Media Access Control Address) that works on the layer-2 (data link layer) of OSI) identifies and encapsulates network devices that can forward data packets. It re-generates the information and forwards the information to the specified port after internal processing. It can automatically address and exchange the information.

 

Layer-3 switches are not addressing and switching

At present, layer-3 switches also have some new features, such as VLAN support, link aggregation support, and even some firewall features, which are the features of layer-3 switches. The layer-3 Switch adds the routing function when dividing VLAN based on the protocol.

Sometimes you have to leave your pet at home, but you don't like it either. You don't want to pay for it and try someone else to take care of your pet. How can we solve such a dilemma? We have seen a cyber guru solve the problem of PET feeding when the host is not at home.

Matthew of the UK designed an internet-based pet feeding machine. Matthew does not use a CD-ROM tray to push non-quantitative things into a pet bowl, but instead uses a device controlled by Cisco's third-tier switch to measure the number of catchers and adjust the amount of catchers accordingly.

The layer-3 Switch Port has an LED signal control to precisely control and display the feeding status. When feeding, you can select the feeding quantity based on the user logs on the network interface, or you can set a feeding schedule by yourself. Matthew says the device is 100% reliable because his cat looks healthy.

What's even more, if you don't feel at ease, you can also remotely view real-time video images on a business trip or travel, close your eyes and think about the romantic blue seaside, lying on a white sun chair and surfing the Internet through 3G wireless connection, it's a pleasant thing to feed Cute pets while thinking about their home.