IEEE 802.1Q defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches. Learn about the frame format, the tag protocol identifier, the priority code point, the drop eligible indicator, the VLAN identifier, and the double tagging concept.
What Is VLAN Tagging? IEEE 802.1Q Explained Simply
https://deepstrike.io/blog/what-is-vlan-tagging
Dec 24, 2025 · Learn what VLAN tagging is, how IEEE 802.1Q works, trunk vs access ports, native VLAN risks, and how misconfigurations can enable VLAN hopping attacks.
VLAN tagging is the mechanism by which a switch embeds a VLAN identifier directly inside an Ethernet frame so that receiving devices know which VLAN the frame belongs to.
Oct 22, 2024 · In this guide, we’ll explore what VLAN tagging is, how it works, and why and how you may want to implement the strategy in your own network virtualization projects.
Fundamentals of 802.1Q VLAN Tagging - Cisco Meraki
VLANs keep traffic from different networks separated when traversing shared links and devices within a topology . This process, also known as VLAN tagging, is invaluable to limiting broadcast network traffic and securing network segments.
Tagged, Untagged, and Native VLANs: 802.1Q VLAN Tagging Explained
Learn how VLANs separate layer 2 traffic and how switches add or strip VLAN tags. Understand the difference between untagged, tagged, and native VLANs and how they work with frames.
IEEE 802.1Q – VLAN Tagging and Trunking in Networking
VLAN tagging is the process of inserting VLAN-related information into Ethernet frames . This helps network devices identify which VLAN a frame belongs to when traversing trunk links.