Do not use mgmt as the name of a switch virtual interface (SVI). mgmt is reserved for the physical management switch Hafen. Workaround: When using the cable diagnostics feature on a Hafen (with the befund switch physical-ports cable-diag CLI command), ensure that the physical Verknüpfung on its neighbor Hafen is https://fortiswitch87632.homewikia.com/10273962/etwa_fortiswitch