Need to add new devices to the Network configuration Manager (NCM) in Spectrum.
The devices do not appear under any of the default Device Families.
Spectrum, all supported versions
If the devices support ssh, preferred method is NCM SSH self-certification
Note:
The existing Perl script mode of configuration is also supported for enabling NCM support for custom devices. Using the SSH-based Perl scripts mode of configuration takes precedence over the SSH commands configuration. For more information about Perl Scripts functionality in NCM, see Using SSH-based Perl Scripts for Network Configuration Manager Operations
As noted, if the devices support SSH, SSH self certification is preferred.