▪ A VLAN is a logical partition of a Layer 2 network.
▪ Multiple partitions can be created, allowing for multiple VLANs to
co-exist.
▪ Each VLAN is a broadcast domain, usually with its own IP network.
▪ VLANs are mutually isolated and packets can only pass between
them via a router.
▪ The partitioning of the Layer 2 network takes place inside a Layer 2
device, usually via a switch.
▪ The hosts grouped within a VLAN are unaware of the VLAN’s
existence.
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