Tagged vs. Untagged VLANs: What’s the Difference?
VLANs (Virtual Local Area Networks) are a cornerstone of modern network design, allowing network administrators to segment large networks into smaller, more manageable, and more secure broadcast domains. They essentially create isolated networks within a physical network, improving performance and security.
Before VLANs, we had traditional LANs. Early Ethernet technology had limitations that made it difficult to manage and secure large networks. VLANs were developed to overcome those limitations, allowing for better network segmentation and control.
So, what exactly is the difference between tagged vs untagged VLANs? This article will break down the distinctions between these two types of VLANs and what they mean for your network’s security and overall management.