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Native VLAN not present

tedauction
Level 1
Level 1

Hello, I understand modern Cisco switches do not require a native VLAN on trunks.

I want to trunk VLANs 100 & 200.

Therefore, is it still OK if I have no native VLAN, AND restrict trunk allowed VLANs to only 100 & 200 i.e. no explicit allow statement for VLAN1 ?

I am unsure if this will prevent management traffic from passing across the VLAN i.e. BPDUs, DTP, VTP and CDP.

1 Accepted Solution

Accepted Solutions

Francesco Molino
VIP Alumni
VIP Alumni
Hi
You're correct. Not setting the default vlan means having Vlan 1 as default native vlan.
It won't prevent getting all network protocols passing through like bpdu, vtp....

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question

View solution in original post

1 Reply 1

Francesco Molino
VIP Alumni
VIP Alumni
Hi
You're correct. Not setting the default vlan means having Vlan 1 as default native vlan.
It won't prevent getting all network protocols passing through like bpdu, vtp....

Thanks
Francesco
PS: Please don't forget to rate and select as validated answer if this answered your question
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