![]() ![]() These MAC addresses are then linked up to their corresponding physical port on the switch device through Address Resolution Protocol (ARP). A MAC address is simply a unique identifier that is assigned to a network interface controller and is used to address all communications within a network. Essentially, when data is sent through the network, the switch will inspect the packet header and compile a table of MAC addresses. It works by employing packet switching, packet header inspection, and collision domain reduction. It allows for the connection of multiple devices on a local area network (LAN) but can only work with MAC addresses. A layer 2 switch is responsible for “switching” packets from the physical port on the switch to a Media Access Control (MAC) Address. Understanding a Layer 2 Network Switch: What Is It?Ī layer 2 switch is a data link layer device that traditionally operates on layer 2 of the Open System Interconnect (OSI) model. ![]() ![]() In this article, we will specifically be discussing layer 2 vs layer 3 switches within networks what they are, how they are different, and how they are used in real-life situations. For instance, the local internet network that you connect to at home is likely to use a router, a switch which buffers, boosts, and error checks data, a hub where all data is routed to, and a bridge which helps filter data source and destination. A network consists of several devices that work in tandem with one another in order to process, route, and connect data packets. ![]()
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