This trap is sent if on this port an BPDU guard functionality is enabled (globally or only for this port) and an (R)STP BPDU are received on this port. That means when hmIfaceStpBpduGuardStatus is set to true(1) for this port. Then IfAdminStatus for this port is set to down(2). If needed, it must be changed by hand to up(1)
Sources for this description
Belden, GarrettCom and Hirschmann IT official standalone MIBsHirschmann MIB copies (LibreNMS/Observium Community)Netdisco MIB archive copies