# Star Topology ## What is Star Topology Star topology is a network configuration in which all devices are connected to a central networking device, typically a switch or hub. Each device has its own dedicated cable that connects it directly to the central device. No device is directly connected to another device. All communication between devices must pass through the central device. Star topology is the most commonly used topology in modern local area networks. ## How Star Topology Works When a device wants to send data to another device on the network, it sends the data to the central switch. The switch examines the destination MAC address in the data frame and forwards it only to the port connected to the destination device. This point-to-point connection between each device and the central switch means that network traffic for one device does not affect other devices. Each device gets dedicated bandwidth on its connection to the switch. ## Advantages of Star Topology Star topology is easy to install and manage. Each device has its own dedicated connection to the central switch, so a failure of one cable or one device does not affect the rest of the network. It is easy to add new devices by simply connecting them to the central switch. Troubleshooting is simplified because problems can be isolated to individual connections. Modern switches provide much better performance than hubs in a star topology because they do not broadcast data to all ports. ## Disadvantages of Star Topology The central switch or hub is a single point of failure. If the central device fails, all devices on the network lose connectivity. Star topology requires more cable than bus topology because each device needs its own cable to the central device. The cost of a managed switch or hub adds to the overall cost of the network.