Definition, synonyms and related words
Initialism of virtual local area network.
"The IT administrator configured a new VLAN to isolate traffic between different departments on the corporate network."
In plain English: A VLAN is like putting different groups of computers on separate private networks within the same building so they can't see each other's traffic unless you want them to.
"The network administrator created a new vlan to separate guest Wi-Fi from internal office traffic."