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What is difference between Default vlan and native vlan it's always confuses me

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  • There are many questions here about this with answers, such as tthe above linked question.
    – Ron Maupin
    Jul 27, 2020 at 3:27

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The native vlan is the vlan to which untagged traffic belongs. When transmitted, the frame may or may not have a tag. Most switches default to untagged, but there are exceptions. (e.g. the 40G ports on the "ALE" expansion module of a nexus 9300 series switch.)

The default vlan is the vlan to which a port belongs absent explicit configuration. In most cases, this is "1", but not always.