How to change Native VLAN and how to declare vlan in trunk to protect VLAN hopping attack

Comments off | Network By Md Anwar Hossain · 05/06/2023

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How to change Native VLAN and how to declare vlan in trunk to protect VLAN hopping attack

Step 01- Create VLAN

#vlan 2
#name IT

#vlan 999
#name Native-VLAN

Step 02- Assign Port under VLAN

#int fa 0/2
#switchport mode access
#switchport access vlan 2

#int fa 0/3
#switchport mode access
#switchport access vlan 999

Step 03- Declare Trunk port
# int fa 0/1
#switchport mode trunk

Step 04- Specify VLAN allow through trunk port
#switchport trunk allowed vlan 2,999

save the configuration and check .

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