FTP 120 Service Ready Soon vs 504 Parameter Not Implemented
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 504 (Parameter Not Implemented) is a 5xx Permanent Negative response. 120 indicates that the service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly. In contrast, 504 means that command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Descripción
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
Cuándo lo verás
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
Cómo solucionarlo
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
Descripción
Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
Cuándo lo verás
When you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Cómo solucionarlo
Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.
Diferencias clave
120 is a 1xx Positive Preliminary response, while 504 is a 5xx Permanent Negative response.
FTP 120: The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
FTP 504: Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 504 when when you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
Cuándo usar cada uno
For 120 (Service Ready Soon): Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator. For 504 (Parameter Not Implemented): Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.