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Vlan double tagging confusion

PriyaBali6356
Level 1
Level 1

This is the first time i m learning networking. In netacad course book it was mentioned when a switch receives a tagged fram with same vlan id as native vlan on a trunk port, it will drop the frame.

so how an attacker is sending a tagged frame with native vlan id and instead of dropping the frame, when frame arrives at trunk port it strips off the native vlan tag and forward it to other trunk links and native vlan interfaces?

2 Replies 2

balaji.bandi
Hall of Fame
Hall of Fame

Cristian Matei
VIP Alumni
VIP Alumni

Hi,

 

    Find a very good explanation here, in one of the Cisco Press books.

 

Regards,

Cristian Matei.

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