Introduction to VLANs
1. What's a VLAN ?
- VLAN means Virtual Local Area Network
- It is a logical segmentation of a local network.
- Allows network traffic to be separated between different user groups, even if they are physically connected to the same switch.
Pros
- Security: Users in different VLANs cannot communicate directly with each other.
- Management: Facilitates network administration.
- Performance: Reduces the broadcast domain.
2. Key concepts to know
| VLAN ID | Unique identifier for each VLAN (1 to 4094) |
| VLAN Name | Name associated with a VLAN |
| Port Access | Port associated with a single VLAN |
| Broadcast domain | A VLAN is a separate broadcast domain |