{"id":162344,"date":"2024-07-10T14:29:07","date_gmt":"2024-07-10T07:29:07","guid":{"rendered":"https:\/\/it.telkomuniversity.ac.id\/switch-adalah\/"},"modified":"2025-02-03T15:02:25","modified_gmt":"2025-02-03T08:02:25","slug":"switch-is","status":"publish","type":"post","link":"https:\/\/it.telkomuniversity.ac.id\/en\/switch-is\/","title":{"rendered":"Switch: Definition, Main Function, and How It Works"},"content":{"rendered":"

In a network, a switch is a link between devices in a network. Learn how to understand switches, switch functions, and how they work in supporting data transmission on the network.<\/strong><\/p>\n

Switch Definition<\/span>\u00a0<\/span><\/h2>\n
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A switch is a network device used to connect devices in a local area network (LAN). The function of the switch is to forward data packets between the devices connected to it. Switches operate at the data link layer (Layer 2) of the OSI model and are capable of transmitting data based on the MAC address (Media Access Control).<\/span><\/div>\n
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Unlike routers<\/strong><\/a>, which connect two or more different computer networks\u2014both local networks (LANs) and wide area networks (WANs)\u2014to facilitate communication, switches only forward data packets to a specific destination device.<\/span><\/div>\n
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Switches<\/strong><\/a> have several ports that can be used to connect devices such as computers, printers, servers, and other network devices. Each port on the switch typically operates at the same speed, for example, 1 Gigabit per second or 10 Gigabits per second.<\/span>Switches also support networking features such as Virtual LAN (VLAN), which allows the separation of network traffic into isolated logical segments; Quality of Service (QoS), which prioritizes important traffic; and security features such as access control lists (ACLs) to manage access to the network.<\/span><\/div>\n
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In more complex networks, switches can be interconnected to form larger network topologies such as tree or mesh topologies. This configuration allows for more flexible organization and a significant increase in network capacity.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Switch Function<\/h2>\n

The main function of a switch is to connect devices in a local network (LAN) and forward data packets between these devices. Below are some key functions of switches:<\/span><\/p>\n

Forwarding Data Packets<\/h3>\n

A switch is responsible for routing data packets from the source to the destination. When it receives a data packet, the switch reads the destination MAC address on the packet and sends it only to the port connected to the destination device that matches the MAC address.<\/span><\/p>\n

Network Segmentation<\/h3>\n

Switches enable network segmentation by dividing data traffic into virtual segments known as Virtual LANs (VLANs). By using VLANs, switches can separate network traffic based on specific needs and policies.<\/span><\/p>\n

Network Performance Improvement<\/h3>\n

Switches enhance network performance by providing a dedicated path for each connected device. This reduces data collisions, which are common with hubs where all devices share the same network segment.<\/span><\/p>\n

Broadcast Filtering<\/h3>\n

Switches can filter and control broadcast traffic on the network. When a device sends a broadcast packet, the switch forwards it only to the ports that need the information, rather than sending it to all ports on the network.<\/span><\/p>\n

Fast Packet Delivery<\/h3>\n

Switches are capable of forwarding data packets at high speeds due to their efficient switching hardware. This improves overall network speed and responsiveness.<\/span>With these functions, switches play a crucial role in building efficient, secure, and high-performance local networks (LANs).<\/span><\/p>\n

Difference Between Switch and Router<\/h2>\n

Many people may still be unclear about the exact differences between switches and routers. Here\u2019s a breakdown of their distinctions:<\/span><\/p>\n