What protocol is used in switches?

Switches operate at Layer 2 of the TCP/IP (and OSI) model and are the workhorses of most networks. The operation of switches and bridges is defined in the IEEE 802.1D standard. The standard also describes the behavior of other Layer 2 protocols, such as the Spanning Tree Protocol, which will be covered in Chapter 3.

What happens when a device sends data via a switch?

When a device sends a packet to another device, it enters the switch and the switch reads its header to determine what to do with it. It matches the destination address or addresses and sends the packet out through the appropriate ports that leads to the destination devices.

What is switch and its functions?

Switches are key building blocks for any network. They connect multiple devices, such as computers, wireless access points, printers, and servers; on the same network within a building or campus. A switch enables connected devices to share information and talk to each other.

How does Layer 2 protocol work?

Layer 2 switching (or Data Link layer switching) is the process of using devices’ MAC addresses to decide where to forward frames. Switches and bridges are used for Layer 2 switching. They break up one large collision domain into multiple smaller ones. In a typical LAN, all hosts are connected to one central device.

Which protocol operates on transport layer?

The transport layer is represented by two protocols: TCP and UDP. The IP protocol in the network layer delivers a datagram from a source host to the destination host. Nowadays, the operating system supports multiuser and multiprocessing environments, an executing program is called a process.

What is a switch port?

Switch ports are Layer 2-only interfaces associated with a physical port. A switch port can be an access port, a trunk port, or a tunnel port. Switch ports are used for managing the physical interface and associated Layer 2 protocols and do not handle routing or bridging.