What is ieee 802 1q?

IEEE 802.1Q is a networking standard that defines a method for VLAN (Virtual Local Area Network) tagging in Ethernet frames. It allows multiple VLANs to coexist on a single physical network segment by adding a tag to the Ethernet frame header, which contains information about the VLAN to which the frame belongs. This tagging facilitates improved network segmentation, traffic management, and security by logically separating broadcast domains. The standard is widely used in enterprise networks to enhance performance and organization.