VLAN
Network communications domain that is isolated at the data link layer
VLAN
A virtual local area network (VLAN) is a local area network broadcast domain that is partitioned and isolated in a virtual network at the data link layer (OSI layer 2). A VLAN behaves like a virtual network switch or network link that can share the same physical structure with other VLANs while staying logically separate from them. VLANs work by applying tags to network frames that are forwarded within the broadcast domain, creating the appearance and functionality of network traffic that behaves as if it were split between separate networks. In this way, VLANs can keep network applications separate despite being connected to the same physical network, and without requiring multiple sets of cabling and networking devices to be deployed. VLANs allow network administrators to group hosts together even if the hosts are not directly connected to the same network switch. Because VLAN membership can be configured through software, this can greatly simplify network design and deployment. Without...
Read on Wikipedia · Image Michel Bakni, CC BY-SA 4.0
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