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What happen if I have both ENABLED spanning-tree BPDUFILTER and BPBDUGUARD on a specific port?

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If you place a switch-port into this configuration:

spanning-tree bpdufilter enable
spanning-tree bpduguard enable

bpdufilter will take precedence and bpdugard will not be functional.

Cisco documentaion here confims this with this statement

"You can override the setting of the no spanning-tree portfast bpdufilter default global configuration command by using the spanning-tree bpdufilter enable interface configuration command."

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