# VLAN

CEFR C2 · Noun

Source: https://englishreference.com/word/vlan
Updated: 2026-07-22

## Definition

Stands for Virtual Local Area Network. A way to group computers on a network together even if they are not plugged into the same piece of equipment.

For teachers: Abbreviation for Virtual Local Area Network. A logical subnetwork that groups together a collection of devices from different physical LANs into a single broadcast domain.

## Examples

- The IT department set up a separate VLAN for the guest Wi-Fi.
- By using a VLAN, the administrator can ensure that the accounting department's data remains isolated from the rest of the office network for better security.
- Implementing multiple VLANs across a single physical switch allows for more efficient traffic management and reduces the size of broadcast domains within a large corporate infrastructure.

## Usage notes

- Often used as a modifier before other nouns, such as 'VLAN tagging' or 'VLAN ID'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.