FTP 120 Service Ready Soon vs 211 System Status
FTP 120 (Service Ready Soon) is a 1xx Positive Preliminary response, while 211 (System Status) is a 2xx Positive Completion 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, 211 means that system status or system help reply. The server provides information about its current status or available features.
描述
The service will be ready in a certain number of minutes. The server is not yet available but expects to be shortly.
何时出现
When connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
如何修复
Wait the indicated number of minutes and try connecting again. If the server never becomes ready, contact the server administrator.
描述
System status or system help reply. The server provides information about its current status or available features.
何时出现
After issuing the STAT command without arguments, the server returns its system status and supported features.
如何修复
No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.
主要区别
120 is a 1xx Positive Preliminary response, while 211 is a 2xx Positive Completion 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 211: System status or system help reply. The server provides information about its current status or available features.
You encounter 120 when when connecting to an FTP server that is starting up or temporarily busy with maintenance tasks.
You encounter 211 when after issuing the STAT command without arguments, the server returns its system status and supported features.
何时使用哪个
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 211 (System Status): No fix needed — this is an informational response. Use the information to understand the server's capabilities and current state.