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Trunk Port PVID and Management VLAN
Is there a good practice about the PVID choice for trunk ports ?
Should I avoid to use the management VLAN ID as the PVID for my trunk ports ?
Is the PVID of my trunk port of any importance at all or can I choose any avalaible number ?
My concern here is that putting on my trunk port the PVID corresponding to the ID of my Management VLAN would cause some security issues.
Thanks.
If physical access to trunk port does cause security issues I would consider to rethink the physical security. Or do you consider adding VLAN tags making a big difference?
The PVID does define the VLAN where untagged frames to the switch are sent to - this is typically the same with the one-and-only [U]ntagged VLAN you have on a 802.1q VLAN port.
2 Replies
If physical access to trunk port does cause security issues I would consider to rethink the physical security. Or do you consider adding VLAN tags making a big difference?
The PVID does define the VLAN where untagged frames to the switch are sent to - this is typically the same with the one-and-only [U]ntagged VLAN you have on a 802.1q VLAN port.
> to rethink the physical security
I think you answered my question with this alone !
Physical Security has to guarantee that no one can access the ports that are directly on the switch.
I'm kind of new to network admin and I'm really trying to unserstand the ins and outs, without forgetting any important security question.
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