Cisco Packet Tracer - VLANs Simples
A VLAN (Virtual Local Area Network) is a virtual network that allows devices in different physical locations to be grouped into a single logical network.
A VLAN is created using software, which requires a switch with specific technical specifications that allow VLAN configuration.
VLANs are used to divide a network into different groups of devices based on functions, departments, or physical locations. By segmenting the network into VLANs, it is possible to implement security policies, among other actions.
Each VLAN has a unique numerical identifier (VLAN ID) that is assigned to each data packet on the network. Network switches use the VLAN ID to route traffic between VLANs and to separate the traffic of each VLAN, preventing traffic from one VLAN from interfering with the network of another VLAN.
Packet Tracer is software developed by Cisco and widely adopted for teaching and learning computer networks. It is commonly used in technical schools and universities because it allows the simulation of a network environment (LAN and WAN) without the need to use real physical equipment and devices – which require high budgets and very large laboratories.