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Layer 3 Switch Definition: A Layer 3 switch is a network device that operates at the network layer (Layer 3) of the OSI model, capable of routing data between different subnets or VLANs based on IP addresses.
A Layer 3 Switch is a network device that operates at the network layer (Layer 3) of the OSI model, allowing it to make routing decisions based on IP addresses. In addition to switching functions performed by Layer 2 switches, Layer 3 switches can also interpret IP addresses and make decisions on where to forward data packets within a network based on the destination IP address. This helps to improve network performance and efficiency by reducing the need for external routers to handle inter-VLAN routing and routing between different networks.