Hello, you are using an old browser that's unsafe and no longer supported. Please consider updating your browser to a newer version, or downloading a modern browser.
Training Camp • Cybersecurity Glossary
Dot1Q is a standard protocol for tagging frames on an Ethernet network with a VLAN identifier.
Dot1Q Definition: Dot1Q is a standard protocol for tagging frames on an Ethernet network with a VLAN identifier.
Dot1Q (802.1Q) is a standard that defines VLAN trunking for Ethernet networks. It adds a 4-byte tag to Ethernet frames, allowing multiple VLANs to traverse a single network segment. This tagging scheme enables network administrators to logically segment traffic and improve network performance and security by isolating different groups of users or devices within the same physical network.
Turn knowledge into credentials. Browse our instructor-led cybersecurity courses.
View All Courses →