This trap is sent when a feature is not supported on by a peer. This condition can occur when a device does not support a feature (not really an error) or if the feature's Advertise flag is off (possible configuration error).
Sources for this description
Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community)Common and standard MIB copies (LibreNMS/Observium Community)NETGEAR official product and EOL MIB downloads