2.1.c Implement and Troubleshoot VLAN

Section 2.1.c Implement and Troubleshoot VLAN

 

We cannot discuss VLANs until we learn the dot1q tag in depth.

 

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The dot1q header comes before the ethertype field in ethernet.

It is a 4 byte value used to denote these 3 fields:
802.1P (class of service/layer 2 qos)
DEI: Drop eligible indicator
ID: vlan membership

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