STP-Config on Port to ISP

[Stril]

Hi!

I am just a bit confused on how to configure STP on a port facing to my ISP.

My fear is, that the ISP could send BPDUs and so, he could change my STP-topology.

Option 1:
Disable STP on that port
--> In that case: What happens, if BPDUs are received? Will they be dropped or forwarded in any case?

Option 2:
BPDU-guard
--> Disables the whole port, if BPDUs are received, but i would prefer to only drop the BPDUs

I am using Dell N4032-Switches and Dell 55xx-Switches.

How do you handle this?

Thank you for your help
Stril

 

[mb300sd]

Disable STP. I'm 99% sure the switch will drop BPDUs.

 

[Stril]

Thank you!

I just found a hint in the docs, that disabled plus BPDU filtering should do, what I want