VLAN (Virtual Local Area Network)

Purpose: segment and group network to smaller network virtually within a single Network Switch. Similar to Subnet but it's virtually

In contrast to LAN (Local Area Network), the devices connected VLAN are not bounded physically.

By default all without assinging vLAN ID (VLAN Tagging) pVID (Port vLan Identifier), it defaults 1

vLANs allow to segment the switch into smaller groups. For example, VLAN 20 has Host A and Host B and VLAN 30 has Host C and Host D

These are like mini-switches

And each perform the three switch actions within each vLAN. Meaning each vLAN will have its own MAC address table.

[!note]
A port can belongs to multiple vLAN

vLAN vs vSwitch

• vSwitch is a virtual switch (not real switch but behave like a real one)
• vLAN can apply on real switch and virtual switch