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Global Accelerated Learning • Est. 1999
Glossary Term 802.1Q

Training Camp • Cybersecurity Glossary

What is 802.1Q?

802.1Q is a standard for VLAN tagging in Ethernet networks, allowing multiple VLANs to share a single physical network infrastructure.

Glossary > Network Security > 802.1Q

Understanding 802.1Q

802.1Q is a standard protocol in networking that provides virtual LAN (VLAN) tagging for Ethernet frames. It allows multiple VLANs to be carried over a single physical network interface, enabling the segregation of network traffic into different logical networks without the need for separate physical networks. This tagging process involves adding a VLAN identifier to the Ethernet frame header, indicating which VLAN the frame belongs to.

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