6 terms

IEEE 802.1Q

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IEEE 802.1Q ("dot1q")
Using IEEE 802.1Q ("dot1q") results in much less overhead on our frames. Dot1q places only a 4-byte header on each frame, and if the frame is destined for the native VLAN, even that header isn't put on the frame! When the receiving switch sees a frame with no VLAN ID, that switch assumes the native VLAN is the destination VLAN. This is an excellent reason to make sure your switches agree on the native VLAN.
IEEE 802.1Q ("dot1q")
Dot1q embeds the tagging information into the frame itself. For this reason, you'll sometimes hear dot1q referred to as "internal tagging".
IEEE 802.1Q ("dot1q")
Dot1q is the industry-standard trunking protocol, making it suitable for use in a multi-vendor switching environment.
IEEE 802.1Q ("dot1q")
Dot1q adds only one tag, so it's often referred to as "single tagging".
IEEE 802.1Q ("dot1q")
Dot1q's 4-byte addition is in the form of a tag inserted into the frame.
IEEE 802.1Q ("dot1q")
No need to tag frames traversing access ports. An access port belongs to one and only one VLAN, so there's no need for any VLAN ID info.
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